Overview

Released in Australia in September 2017, the Audi F5 A5 Cabriolet was a four-seat convertible with a soft-top roof. Manufactured in Germany, the Audi F5 A5 Cabriolet range for Australia consisted of front-wheel drive 2.0 TFSI variants and all-wheel drive 2.0 TFSI quattro variants. Both variants had seven-speed dual clutch transmissions (Audi’s ‘S tronic’) as standard.

To reduce fuel consumption, the 2.0 TFSI engines for the Audi F5 A5 Cabriolet had a ‘Start-Stop’ function which enabled them to shut down as the vehicle was coming to rest – this occurred at speeds of 7 km/h and below, except for the 3.0 TDI Tiptronic (not offered in Australia) for which the threshold was 3 km/h.

quattro

The four-wheel drive ‘quattro’ system for the Audi F5 A5 Cabriolet was a mechanical system which utilised a self-locking central differential (designed as a planetary gear train). In normal conditions, the differential provided 60 per cent of the engine’s torque to the rear axle and 40 per cent to the front, i.e. a 40:60 front:rear torque split. Depending on the situation, however, up to 70 per cent of the engine’s torque could be transferred to the front and up to 85 per cent to the rear.

Body and dimensions

The Audi F5 A5 Cabriolet was underpinned by Volkswagen’s MQB platform and, relative to the  Audi F5 A5 Coupe , had additional struts in the body and reinforced sills. Compared to the Audi 8F7 A5 Cabriolet , the F5 A5 Cabriolet was 47 mm longer (at 4673 mm), 8 mm narrower (1846 mm), the same height (1383 mm) and had a 14 mm longer wheelbase (2765 mm).

The body of the Audi F5 A5 Cabriolet used hot-formed steels to re-inforce the steel in the side sills, the A-pillars and B-pillars; by weight, hot-formed steels comprised 17 per cent of the body structure. Other attributes of the F5 A5 Cabriolet body included:

• A higher sill cross-section;
• Closed ring structures in the area of the rear panel and rear end;
• More effective integration of diagonal struts into the load paths of the body structure; and,
• Highly integrated cast aluminium parts for the front strut domes.

Although Audi did not provide an actual measure of torsional rigidity, Audi claimed class-leading stiffness that exceeded its predecessor by 40 per cent, while achieving an overall mass reduction of around 40 kg. The Audi F5 A5 Cabriolet had a boot capacity of 380 litres with its roof closed, though this decreased to 320 litres when the roof was open.

The Audi F5 A5 Cabriolet had a power-operated soft-top roof that could open in 15 seconds and close in 18 seconds. Furthermore, the roof could be operated while the A5 Cabriolet was being driven at speeds of up to 50 km/h.

Suspension

The Audi F5 A5 Cabriolet had five-link front suspension in which the axle was insulated from the body by hydraulically damped axle mounts. Furthermore, the F5 A5 Cabriolet had five-link rear suspension (rather than the trapezoidal-link rear suspension of the 8F7 A5 Cabriolet).

As an extra-cost option ($2210 at launch), the F5 A5 Cabriolet was available with ‘Continuous Damping Control’ (CDC) shock absorbers which had electromagnetically controlled valves in their pistons to control the flow of hydraulic fluid. For the CDC system, the central suspension control unit processed inputs from sensors that measured movement and acceleration (in longitudinal and transverse directions) to control each shock absorber individually. Furthermore, the ‘Audi drive select driving-dynamics’ system enabled the driver to select from ‘sports’ or ‘comfort’ settings.

Steering

The Audi F5 A5 Cabriolet had electromechanical power steering with a ratio of 15.9:1 and power assistance which was inversely proportional to vehicle speed. As an option, the A5 Cabriolet was available with ‘dynamic steering’ which varied its ratio by up to 100 per cent depending on vehicle speed, steering angle and the mode selected in the ‘Audi drive select driving-dynamics’ system.

Safety equipment

Standard safety equipment for the Audi F5 A5 Cabriolet included dual front airbags, combined head/thorax side airbags for front occupants, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control and front seatbelts with pre-tensioners and load limiters.

As standard, the Audi F5 A5 Cabriolet was equipped with the following active safety technologies –

• Audi pre sense city: operating at speeds up to 85 km/h, Audi pre sense city used a windscreen-mounted front camera to scan the road for other vehicles and pedestrians. If there was a collision risk, the driver would receive a series of warnings. If the driver failed to respond, full braking force could be applied autonomously. From initial speeds of up to 40 km/h, collisions could be prevented; at higher speeds (up to 85 km/h), the severity of the collision was reduced;
• Audi pre sense basic: initiated occupant protection measures such as tightening the front seatbelts, closing the windows and activating the hazard lights when ‘unstable driving conditions’ were detected or a collision was anticipated;
• Audi pre sense rear: could warn of potential collisions from behind, alert following traffic by rapidly flashing the brake lights and activate the ‘Audi pre sense basic’ protection measures described above;
• Audi side assist: operating at speeds above 15 km/h, Audi side assist used two rear radar sensors to monitor traffic up to 70 metres behind the A5 Cabriolet. If another vehicle was approaching quickly or was in the driver’s blind spot, a warning LED in the housing of the appropriate door mirror would illuminate. If the driver activated the indicator to change lanes, the LED would blink rapidly to warn the driver;
• Rear cross-traffic assist: when reversing at low speeds, rear cross-traffic assist used the rear radar sensors to detect approaching traffic. If approaching traffic was detected which may cross the vehicle’s path, the driver would receive warnings (visual and acoustic) and be alerted by a brief, jolting application of the brakes;
• Exit warning: activated when the vehicle stopped moving, exit warning would alert occupants if vehicles were approaching from behind by illuminating red fibre optics in the door-opening mechanism as the doors were opened;
• Multi-collision brake: in the event of a collision, the multi-collision brake function provided ‘controlled application of the brakes’ to prevent the car from skidding and to reduce the risk and severity of secondary collisions; and,
• Attention assist: monitored driver behaviour and issued a warning if the driver was assessed to be ‘inattentive’.

Assistance Package Tour

As an extra-cost option ($2470 at launch), the Audi F5 A5 Cabriolet 2.0 TFSI and 2.0 TFSI quattro could be specified with ‘Assistance package tour’ which included –

• Adaptive Cruise Control (ACC): using two front radar sensors and the camera, ACC could maintain a specified distance – from five selectable distances – between the A5 Cabriolet and the vehicle ahead at speeds up to 250 km/h. Furthermore, ‘Audi drive select’ could be used to adjust the rate of acceleration and other control dynamics;
• Stop&Go function: an extension of the ACC and limited to models with automatic or double clutch transmissions, ‘Stop&Go’ operated at speeds of up to 60 km/h and could apply the brakes to bring the vehicle to rest. Once traffic began moving, the Audi A5 Cabriolet would automatically accelerate;
• Traffic-jam assist: an extension of the ACC, the traffic-jam assist function could take control of steering operations at speeds up to 65 km/h on ‘well-developed roads when traffic is congested.’ To do so, traffic-jam assist used lane markings and other vehicles on the road for orientation. When the traffic-jam assist function reached its limits – for example, when traffic was sparse or there was a sharp corner ahead – the driver had to take over steering. Hence, the system provided warnings at different levels;
• Audi pre-sense front: could prevent front-to-rear collisions or reduce their severity. In hazardous situations, the driver received visual and acoustic warnings to apply the brakes, followed by a brief application of the brakes for a jolting effect to alert the driver;
• Audi active lane assist: used the front camera to detect lane markings at speeds of 65 km/h and above. If the Audi A5 Cabriolet approached a lane marking without the driver having previously indicated, the electromechanical steering could provide an adjustment to bring the vehicle back into its lane. Using the MMI system, the driver could determine whether this system should be activated at all times or only before the lane marking was crossed. As an option, the driver could choose to have steering wheel vibrations as a warning signal;
• Collision avoidance assist: activated when the A5 Cabriolet needed to avoid an obstacle to avert a collision. Using data from the front camera, the ACC and radar sensors, ‘avoidance assist’ could calculate the distance of the car ahead, its width and degree of offset. The brakes would be briefly applied to alert the driver of the potential danger and, once the driver started steering, the system would provide ‘support with the necessary lane changes with controlled interventions to the power steering’;
• Turning assist: active at speeds from 2 km/h to 10 km/h, ‘Turning assist’ could monitor oncoming traffic during right turns (for cars with right-hand drive). In hazardous situations, the brakes could be applied automatically to bring the vehicle to rest. Turning assist commenced operation when the driver activated the right-hand turn signal; and,
• High beam assist: automatically switched between low and high beam headlights to improve visibility and avoid dazzling other drivers, using a sensor to determine when it was safe to do so.

Features: Audi F5 A5 Cabriolet 2.0 TFSI

The standard infotainment system for the A5 Cabriolet 2.0 TFSI consisted of a 180 watt Audi sound system with a six-channel amplifier and ten loudspeakers, a digital radio tuner (DAB+), Audi smartphone interface for Apple or Android OS smartphone integration, ‘Audi connect’ Wi-Fi hotspot, Audi music interface with two USB inputs and auxiliary (3.5 mm) input socket, and Bluetooth interface with audio streaming. Furthermore, the ‘MMI navigation plus’ system consisted of a satellite navigation system with an 8.3-inch high resolution display and 3D maps, three years of map updates, integrated voice control with natural language voice input, MMI touch control panel with handwriting recognition, live traffic updates, MMI radio and DVD/CD player, 2 SDXC card readers and a 10 GB flash memory for media storage.

Beyond this, standard features for the Audi F5 A5 Cabriolet included 18-inch alloy wheels with 245/40 tyres, power adjustable and heated front sport seats, leather seat trim, three-zone climate control air conditioning, neck level heating, cruise control, LED headlights, LED daytime running lights, LED tail-lights with dynamic indicators, a leather steering wheel with gearshift paddles, 50:50 split and folding rear seats, remote central locking with proximity key, power adjustable and heated door mirrors with folding function, kerb view function for the passenger side door mirror, power windows, tilt and telescopic steering wheel adjustment, an auto-dimming rear view mirror, push-button start, ‘aluminium ellipse’ interior inlays, ambient interior lighting, a manually installable wind deflector, a tyre pressure loss indicator, a trip computer and an immobiliser.

As standard, the A5 Cabriolet was equipped with the ‘Audi parking system plus’ which included a rear view camera and parking sensors (front and rear), and the ‘Audi virtual cockpit’ which consisted of a 12.3-inch display (1440 x 540 pixels) for the instrument panel.

Features: Audi F5 A5 Cabriolet 2.0 TFSI quattro

Compared to the A5 Cabriolet 2.0 TFSI, the A5 Cabriolet 2.0 TFSI quattro was further equipped with 19-inch alloy wheels with 255/35 R19 tyres, a flat-bottomed steering wheel, auto-dimming door mirrors, driver memory settings for the seat and door mirrors, and ambient interior lighting with thirty selectable colours.

Parking assistance package

As an extra-cost option, the Audi F5 A5 Cabriolet could be specified with a ‘Parking assistance’ package which consisted of:

• Consisted of four wide-angle cameras which provided a 360 degree surround view of the vehicle; and,
• Audi’s ‘Park assist’ which could detect parking spaces and provide automated steering for parallel or perpendicular parking manoeuvres while the driver controlled vehicle speed.

Specifications

• Specifications: Audi F5 A5 Cabriolet and S5 Cabriolet (September 2017)

Review: Audi 8F7.I A5 Cabriolet (2009-11)

Overview

Released in October 2009, the Audi 8F7 Series I (8F7.I) A5 was a two-door, four-seat convertible with a power-operated soft-top roof. Manufactured in Ingolstadt, Germany, the Audi 8F7 A5 Cabriolet range initially consisted of the 2.0 TFSI, 3.2 FSI and 3.0 TDI variants, all fitted with a seven-speed double clutch transmission (Audi’s ‘S-Tronic’) and quattro all-wheel drive system (see table below). In 2010, however, the range was expanded with the introduction of a front-wheel drive 2.0 TFSI variant fitted with an eight-speed continuously variable transmission (CVT).

Dimensions and suspension

Like its A5 Coupe and A5 Sportback counterparts, the 8F7 A5 Cabriolet was underpinned by Volkswagen’s B8 platform. Compared to the Audi A5 Coupe , the A5 Cabriolet was the same length (at 4625 mm) and width (1854 mm), but was 1 mm taller (1383 mm) and had a 7 mm shorter wheelbase (2751 mm).

The Audi A5 Cabriolet had five-link front suspension with upper and lower wishbones and trapezoidal link rear suspension.

quattro and electronic differential locks

The Audi A5 Cabriolet’s ‘quattro’ system utilised a third-generation Torsen T-3 centre differential which provided a default front to rear torque split of 40:60. If traction was lost, however, up to 70 per cent of the engine’s torque could be directed to the front axle and up to 85 per cent to the rear axle.

Models with the quattro system were also fitted with front and rear electronic differential locks which could brake spinning wheels to transfer torque to the opposing wheel (i.e. cross-axle torque transfer).

Safety equipment

Safety equipment for the Audi A5 Cabriolet included dual front airbags, front side airbags, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control, automatically deploying pop-up rollover bars and front seatbelts with load limiters and pretensioners.

Features: A5 Cabriolet

Standard features for the Audi A5 Cabriolet 2.0 TFSI included 17-inch alloy wheels, a ten speaker 180 watt stereo (including subwoofer) with six-channel amplifier, CD player, MP3-compatibility and auxiliary inputs (MP3/USB), air conditioning, Milano leather seats, power adjustable front seats, Bluetooth connectivity, front and rear fog lamps, rear parking sensors, automatic headlights, rain-sensing wipers, 50/50 split and folding rear seats, remote central locking, power windows and heated mirrors, tilt and telescopic steering wheel adjustment, ambient lighting, a trip computer and an immobiliser. The soft-top roof could be opened in 15 seconds, closed in 17 seconds and operated at speeds of up to 50 km/h.

The A5 Cabriolet 2.0 TFSI quattro was further equipped with three-zone climate control air conditioning, bi-xenon headlights with daytime LED driving lights, proximity key and steering wheel gearshift paddles.

Beyond this, the A5 Cabriolet 3.0 TDI and 3.2 FSI added 18-inch alloy wheels, a Multi Media Interface (Audi’ s ‘MMI’) with a seven-inch colour display, six-disc CD player, satellite navigation, CD/DVD player and hard drive, park assist display, heated front seats, front parking sensors, ‘walnut brown’ interior trim and additional soundproofing material for the soft-top roof.

December 2011: Audi A5 Cabriolet update

In December 2011, the A5 Cabriolet underwent a minor update as the ‘Audi Connect’ in-car Internet and telematics system was fitted across the range. Furthermore, all variants other than the 2.0 TFSI (FWD) received a satellite navigation system with seven-inch display, 10GB hard drive for music storage and DVD player.

Related links

• Press Kit: Audi 8F7.I A5 Cabriolet (August 2009)
• Specifications: Audi 8F7.I A5 Cabriolet (August 2009)

Review: Audi 8F7.II A5 Cabriolet (2012-16)

Overview

Released in February 2012, the Audi 8F7 Series II (8F7.II) A5 Cabriolet introduced an expanded range with the addition of the 1.8 TFSI and 2.0 TDI variants. Furthermore, the A5 Cabriolet 3.2 FSI was effectively replaced by the more powerful 3.0 TFSI, while the 2.0 TFSI and 3.0 TDI benefited from power upgrades. To minimise fuel consumption, all 8F7.II A5 Cabriolet models were fitted with start-stop, brake energy recuperation and electro-mechanical power steering systems. Other changes included revised rear suspension bearings and damper tuning and a crown gear centre differential for the quattro system.

Visually, the Audi 8F7.II A5 Cabriolet could be identified by its redesigned head- and tail-lights, larger front air intakes, sharper bonnet edges and new headlights with LED running lights. Inside, there new materials, a new multi-function steering wheel, white instrument illumination and revised switchgear.

Safety equipment

Compared to its 8F7.I predecessor, standard safety equipment for the Audi 8F7.II A5 Cabriolet was unchanged.

Features

Standard features for the Audi 8F7.II A5 Cabriolet 1.8 TFSI and 2.0 TDI included 18-inch alloy wheels, ten speaker stereo with a CD player, MP3-compatiblity, auxiliary inputs (3.5 mm/USB/memory card) and Bluetooth audio streaming, climate control air conditioning, leather upholstery, power adjustable front seats, cruise control, bi-xenon headlights, front and rear fog lights, rear parking sensors, automatic headlights, rain-sensing wipers, Bluetooth mobile phone connectivity, split and folding rear seats, remote central locking, power windows and heated mirrors, tilt and telescopic steering wheel adjustment, an electrochromatic rear view mirror, trip computer and immobiliser.

The A5 Cabriolet 2.0 TFSI was further equipped with three-zone climate control air conditioning, a satellite navigation system, DVD player, 10GB hard disk drive for music storage, proximity key and voice recognition. Beyond this, the 3.0 TFSI and 3.0 TDI added heated front seats and front parking sensors.

A5 Cabriolet Sport Editions: 1.8 TFSI and 2.0 TDI variants

In August 2013, limited-run A5 Cabriolet 1.8 TFSI and 2.0 TDI Sport Editions were released. Compared to the standard 1.8 TFSI and 2.0 TDI, the Sport Editions were further equipped with 19-inch five-segment-spoke alloy wheels, sports suspension, Audi’s ‘MMI Navigation plus’ system (with 20GB media storage, a DVD player and two SDHC memory card slots), contoured sports seats and a flat-bottom steering wheel with gearshift paddles. The 1.8 TFSI and 2.0 TDI Sport Editions were also offered with premium metallic or pearl effect paint finishes as standard.

October 2013: Audi A5 Cabriolet update

In October 2013, standard features for the Audi A5 Cabriolet were extended to include three-zone climate control air conditioning, while quattro models were also fitted with a reversing camera (Audi’s ‘parking system plus’).

Furthermore, the A5 Cabriolet 3.0 TDI and 3.0 TFSI variants were fitted with Audi’s S-line exterior package which included different front and rear bumpers, side grilles, a diffuser insert, body-coloured side sills and ‘S-line’ logos on the front wings and door sill trims.

Related links

• Press Kit: Audi 8T.II A5 Coupe, Cabriolet and Sportback (February 2012)
• Specifications: Audi 8F7.II A5 Cabriolet (February 2012)
• Wikipedia.org: AudiA5

Recalls: Audi 8F7 A5 Cabriolet

Overview

Manufacturers, or importers, issue recalls for defects or faults which have the potential to cause injury. Generally, manufacturers will inform the original buyers if their vehicle is subject to a recall and of the steps required to remedy the defect or fault. Please note that the recalls below (if any) are for Australian-delivered vehicles only. Furthermore, the number of recalls should not be taken as an indication of a model’s reliability or its safety more generally.

Recalls: Audi 8F7 A5 Cabriolet

Audi 8F7 A5 Cabriolet 3.0 TDI: brake servo failure

In August 2014, a recall was issued for Audi 8F7 A5 Cabriolet vehicles with 3.0-litre turbo-diesel engines. In these vehicles, engine oil may enter the brake servo via the vacuum lines. If this occurred, the diaphragm in the brake servo could rupture and cause the brake servo to fail. As a result, stopping distances may be increased, posing an accident hazard to occupants and other road users (PRA 2014/14280).

2011-12 Audi 8F7 A5 Cabriolet 3.0 TFSI: fuel leak and fire hazard

In January 2015, a recall was issued for Audi 8F7 A5 Cabriolet models with the 3.0 TFSI engine that were manufactured from April 2011 up to and including April 2012. In these vehicles, a fuel leak may occur at the connection between the fuel rail and the injector. If this occurred, the owner may detect a fuel smell from the engine compartment and leaking fuel could pose a fire hazard in the presence of an ignition source. As part of the recall, the fuel rail was to be replaced and a reinforced retaining bracket fitted (PRA 2015/14530).

2012-15 Audi 8F7 A5 Cabriolet 2.0 TDI: NOx emissions and “defeat device”

In October 2015, Audi Australia issued a recall for Audi 8F7 A5 Cabriolet vehicles with 2.0-litre EA189 diesel engines that were available for sale from 2012 to 2015. According to the recall notice, the exhaust emissions for these vehicles ‘may not meet regulatory requirements when the affected vehicle is driven under normal conditions’ (see ‘Diesel engines: NOx emissions “defeat device”‘, below). For the 2.0-litre EA189 engine, a software update will be introduced which takes advantage of improved simulation of air currents inside the air intake system. Volkswagen aims to implement the software update from January 2016; the labour time for installing the updated software is around half an hour. Owners could determine whether their vehicle was included in the recall by using a VIN checking tool at audi.com.au (PRA 2015/14956).

2011-16 Audi 8F7 A5 Cabriolet 2.0 TFSI: coolant pump may catch fire

In May 2017, a recall was issued for Audi 8F7 A5 Cabriolet vehicles that had 2.0-litre turbocharged petrol engines (Audi’s ‘2.0 TFSI’) and were manufactured from 2011 to 2016. In these vehicles, foreign particles in the coolant could cause a blockage in the additional coolant pump and cause the pump to overheat. In isolated cases, the overheated coolant pump could catch fire if it were not repaired. For the VINs of the recalled vehicles, please see PRA 2017/16068.

2011-16 Audi 8F7 A5 Cabriolet 2.0 TFSI: overheating of additional coolant pump

In June 2018, a recall (campaign number 19N3) was issued for 2011-16 Audi 8F7 A5 Cabriolet 2.0 TFSI vehicles. In these vehicles, moisture could enter electronic components, causing overheating and failure of the additional coolant pump. The overheating could cause localised smoulder damage to the components which, in some cases, could cause the vehicle to catch fire. For the VINs of the recalled vehicles, please see PRA 2018/16842.

Audi 8F7 A5 Cabriolet: Takata airbag recall

In August 2018, a recall was issued for Audi 8F7 A5 Cabriolet vehicles. The Takata driver’s airbag in these vehicles contained propellant wafers that could absorb moisture over time. In the event of a collision which triggered the driver’s airbag, excessive internal pressure could cause the metal airbag inflator housing to explode. This, in turn, would cause the metal fragments to be projected through the airbag cushion and into the cabin – these fragments posed a serious risk of injury and fatality. For the VINs of the recalled vehicles, please see PRA 2018/16949.

2011-15 Audi 8F7 A5 Cabriolet: heater element in air conditioner could overheat

In August 2018, recall 80C5 was issued for Audi 8F7 A5 Cabriolet vehicles that were manufactured from April 2011 to May 2015. In these vehicles, the auxiliary heater element in the air condition may fail due to overheating in the area of the connectors – this could cause smoulder damage or a fire. For the VINs of the recalled vehicles, please see PRA 2018/16956.

2013-18 Audi 8F7 A5 Cabriolet 3.0 TFSI: potential fuel leak

In March 2019, recall campaign 24DP was issued for Audi 8F7 A5 Cabriolets that had 3.0 TFSI EA837 evo engine and were manufactured between September 2013 and April 2018. In these vehicles, fuel may escape from one or both low-pressure fuel rails. In the presence of an ignition source, the fuel could ignite and pose a fire hazard; petrol fumes may also be noticed in the cabin. For the VINs of the recalled vehicles, please see PRA 2019/17395.

Problems and faults: Audi 8F7 A5 Cabriolet

Overview

This section identifies potential problems, causes and fixes based on the experiences of owners and repairers, online sources and technical service bulletins. This information is provided solely for reference purposes and AustralianCar.Reviews recommends that only properly qualified persons carry out repairs or modifications. Furthermore, the number of items below should not be taken as an indicator of a model’s reliability or the frequency with which they may occur.

To report a problem or fault to the AustralianCar.Reviews team, please use the Contact Us form. Note that AustralianCar.Reviews does not offer advice on automotive problems or disputes; such enquiries will not receive a reply. For vehicles purchased from dealers after 1 January 2011, please see our Australian Consumer Law fact sheet.

Audi 8F7 A5 Cabrio: 7sp DL501 ‘S Tronic’ transmission – mechatronic and clutch faults

For 2008 to 2010 Audi vehicles with seven-speed ‘S Tronic’ DL501 (part code prefix: 0B5) double-clutch transmissions, there have been reports of:

• Mechatronic units that become faulty and require replacement; and,
• Premature wear of the dual multi-plate clutches that prevents them from engaging properly.

About the ‘S Tronic’ DL501 double clutch transmission

From late 2008, the seven-speed ‘S Tronic’ DL501 (part code prefix: 0B5) double-clutch transmission was introduced in Audi vehicles that had longitudinally-mounted engines – this includes the B8 A4, B8 S4, 8R Q5, 8T3 A5 Coupe, 8F7 A5 Cabriolet, 8F7 S5 Cabriolet, 8TA A5 Sportback and 8TA S5 Sportback.In the DL501 ‘S tronic’ transmission, torque is transmitted through the transmission plate to the dual-mass flywheel, and then to the electro-hydraulically controlled dual clutches which selectively operate the even or odd numbered gears.

S Tronic: faulty Mechatronic unit – ‘gearbox malfunction’ and other symptoms

Acting as the central gearbox control unit, the Mechatronic system combines the electro-hydraulic control unit (actuators), the electronic control unit and some sensors into a single unit. The mechatronic system performs the following functions:

• Regulation of oil pressure in the hydraulic system;
• Engagement of the dual clutches;
• Regulation of clutch temperature;
• Shift point selection;
• Regulation of gearbox control;
• Communication with other control units;
• Limp-home programs; and,
• Self-diagnostics.

Symptoms of a faulty Mechatronic unit include:

• Dashboard warnings such as ‘gearbox malfunction, you can continue driving in restricted mode’, ‘gearbox malfunction (no reverse)’ or similar. This message appears because clutch temperature has been calculated to be in a critical temperature range that can cause damage – around 160 degrees Celsius – and an entry will be made in the fault memory;
• Difficulty engaging drive or reverse gears (including ‘hard’ or abrupt gear shifts);
• The vehicle can only be driven in gears 1, 3, 5 and 7, and reverse cannot be engaged. Since the larger outer clutch is used for the odd-numbered gears and reverse, an inability to engage the even gears is due to an inability of the Mechatronic unit to engage the smaller inner clutch;
• The vehicle can only be driven in gears 2, 4, 6 and reverse. This indicates an inability of the Mechatronic unit to engage the larger outer clutch; and,
• ‘Hard’ or abrupt downshifts, especially when the gearbox is hot.

For these symptoms, it is recommended that the Mechatronic unit be repaired as soon as possible to prevent further damage – a Mechatronic repair kit was developed by Audi for this purpose. If further damage occurs, either:

• The Mechatronic unit requires replacement; or,
• The entire transmission (including the Mechatronic unit) requires replacement.

S Tronic: premature wear of multi-plate clutches

It is understood that the multi-plate clutches for the seven-speed ‘S Tronic’ transmission may wear prematurely and this can prevent them from engaging properly. Symptoms of clutch damage include:

• ‘Jerky’ performance where drive torque is transmitted in a stop/start or irregular fashion;
• Either of the clutches slipping;
• Loss of drive torque (in forward or reverse); and,
• Difficulty engaging drive or reverse gears (including ‘hard’ or abrupt gear shifts).

2009-11 Audi 8F7 A5 Cabriolet 2.0 TFSI: oil consumption

Affected models and engine codes
Audi B8 A4, 8T3 A5 Coupe, 8F7 A5 Cabriolet and 8TA A5 Sportback models with 1.8 TFSI and 2.0 TFSI engine that were produced from 2007 to November 2011 are susceptible to excessive oil consumption. This is understood to include the following engines –

• 1.8 TFSI:
  • CABA and CDHA: producing 88 kW (120 PS) and 230 Nm;
  • CABB and CDHB: producing 118 kW (160 PS) and 250 Nm;
  • CABD: producing 125 kW (170 PS) and 250 Nm;
• 2.0 TFSI:
  • CDNB and CAEA: producing 132 kW (180 PS) and 320 Nm; and,
  • CAEB and CDNC: producing 155 kW (211 PS) and 350 Nm.

Cause of the problem: piston and piston ring tolerances
According to Audi’s response to an investigation by BBC’s ‘Watchdog’ program, production tolerances for the pistons and piston rings were too great. As a result, engine oil could get past the piston rings and enter the combustion chamber. While this response did not mention 1.8 TFSI engines, Audi issued two technical product information (TPI) bulletins which stated that modified pistons and piston rings were introduced in production from week 44 of 2011 (i.e. the first week of November 2011) –

• For 1.8 TFSI engines: TPI 2026711/7; and,
• For 2.0 TFSI engines: TPI 2024604/23.

Initial rectification measure (which didn’t work)
Initially, and as per the settlement in Asghari v. Volkswagen Group of America, Inc. et al, Audi sought to rectify excessive oil consumption by

• Replacing the crankcase pressure regulating valve, front crankshaft seal and front crankshaft bolt; and,
• Updating of the engine control module software to match the new parts.

These measures, however, failed to address the cause of the problem (i.e. out-of-specification pistons and piston rings).

Actual rectification measures
If the cylinder bores were not scored (i.e. had not experienced scratches or indentations), then the engine was to be removed from the vehicle so that the pistons, piston rings and connecting rods could be replaced. If, however, the cylinder bores were scored, then the entire engine would have to be replaced. To determine if the cylinder bores were scored, an endoscope could be inserted through the spark plug sockets to view the cylinder walls.

Audi’s policy on fixing the problem
In the UK, Audi have assessed claims of excessive oil consumption on a case-by-case basis since early 2015. To be eligible, owners must have had their vehicle ‘serviced in accordance with the owner’s handbook by an Audi Centre or other professional workshop which follows the Audi Service quality standards.’ For owners in the USA, a claim can be submitted through their dealership.

Please note that Audi’s specification for the 2.0 TFSI engines considers 0.5 litres of oil consumption every 1000 kilometres to be acceptable, and they will not consider this level of usage to be a fault.

Audi 8F7 A5 Cabriolet 3.0 TFSI: rattling noise from timing chain on start-up

In 27 April 2016, Audi issued Technical Service Bulletin 15 16 28 2039995/2 for 2011-15 model year Audi 8F7 A5 Cabriolet 3.0 TFSI vehicles. In these vehicles, rattling noises may be heard from the timing chain drive (at the back of the engine) for around 1-3 seconds after the first engine start of the day. According to the bulletin, these noises were caused by one of the upper chain tensioners, but did not lead to damage. To fix, both upper chain tensioners of bank 1 and bank 2 were to be replaced with ‘optimised’ chain tensioners. The part numbers were as follows –

• Chain tensioner for bank 1: part number 06E109218AJ; and,
• Chain tensioner for bank 2: part number 06E109217AH.

Audi A5 Cabrio V6 diesel engine: NOx emissions “defeat device”

Audi A5 Cabriolet vehicles powered by 3.0-litre diesel V6 engines (engine codes: CCWA/CDUC) that were available for sale from 2009 have software in the electronic control module (ECM) that can sense – via sensors measuring the position of the steering wheel, vehicle speed, the duration of the engine’s operation and barometric pressure – when the vehicle is undergoing emissions testing. The ECM then operates in a low NOx “temperature conditioning” mode to satisfy emissions standards.

At exactly one second after the completion of the initial phases of the standard test procedure, the software immediately switches to a “normal mode” and changes a number of operating parameters that increased NOx emissions. In other tests where the vehicle did not experience driving conditions similar to the start of the emissions testing procedure, the emissions were higher from the start, consistent with the operation and existence of a “normal mode”.

The software on these vehicles constitutes a “defeat device” since it is an Auxiliary Emissions Control Device (AECD) designed to circumvent emissions testing. Volkswagen has admitted that all its 3.0-litre turbo-diesel engines from ‘model years’ 2009 through to 2016 have defeat devices.

Audi A5 Cabrio I4 diesel engine: NOx emissions “defeat device”

Australian-delivered Audi 8F7 A5 Cabriolet vehicles powered by 2.0-litre diesel engines that were available for sale from 2012 to 2015 had software in the electronic control module (ECM) that could sense – via sensors measuring the position of the steering wheel, vehicle speed, the duration of the engine’s operation and barometric pressure – when the vehicle was undergoing emissions testing. The ECM would then run a ‘dyno calibration’ to produce lower nitrous oxide emissions during testing. At all other times, the ECM would run a separate ‘road calibration’ which reduced the effectiveness of the emission control system, specifically the selective catalytic reduction (SCR) or the lean NOx trap.

Based on testing conducted by the EPA and the California Air Resources Board (CARB), NOx emissions for the ‘road calibration’ were 10 to 40 times higher than US standards – this led the United States Environmental Protection Agency (EPA) to issue a notice of violation under the Clean Air Act.As a result, these vehicles did not meet the environmental standards claimed by Audi.

Carbon deposits (build-up) on intake valves

Audi’s naturally aspirated, direct injected petrol engines (such as the A5 Cabriolet’s 3.2 FSI) are considered susceptible to accumulating carbon deposits (or build up) on the intake valves. In these direct injection petrol engines, carbon deposits may accumulate on the stem and throat of the intake valve due to:

1. the vaporisation of oil which is not trapped by the oil separator; or
2. unburned fuel and exhaust gases that escape past the piston rings and enter the crankcase (‘blow-by’).

Since direct injection engines do not spray fuel on the backside of the intake valves, the detergent properties of the fuel cannot remove the carbon build up (as occurs in port injected engines). Symptoms of carbon deposits on the intake valve include difficulty starting the vehicle (hard starting), misfiring and misfire engine codes and reduced engine performance. Potentially, these deposits can result in damage to the catalytic converter and, for turbocharged engines, the turbocharger itself if bits of the deposit break off and enter the exhaust. To remove the carbon deposits, the intake must be removed and the valves cleaned manually. To reduce the incidence of carbon deposits, a common aftermarket measure is the fitment of an oil vapor catch can. The catch can receives dirty air from the crankcase via the Positive Crankcase Ventilation (PCV) valve, filters it and returns it to the intake manifold via the PCV port.

Audi 8F7 A5 Cabriolet: air conditioning doesn’t work

In April 2010, Audi issued technical service bulletin 2020124/2 for Audi 8F7 A5 Cabriolet vehicles because the air conditioning (A/C) may stop working. According to the service bulletin, this may be caused by:

• The A/C pressure/temperature sensor G395 leaking refrigerant – this would cause sensor G395 to show an incorrect or implausible value when reading MVBs (Measuring Value Blocks) such that the air conditioning compressor would deactivate; or,
• The LIN cable connecting the J519 Central Electric Control Unit to Sensor G395 being pinched or cut.

An improved A/C pressure/temperature sensor G395 was introduced in series production (part no. 8K0 959 126B for the Audi A4, A5 and S5).

Problems and faults: Audi 8F7 A5 Cabriolet

• For models with turbocharged petrol engines, the steering may shudder during low speed manoeuvres such as parking; if so, the power steering hose likely requires replacement.
• The brakes may make a moaning or murmuring sound at low speeds or when turning at low speeds – this may be due to a faulty caliper piston seal that does not retract the brakes sufficiently.
• If something other than the ignition key (e.g. the wrong key) is inserted into the ignition lock, the remote keys will not work. For vehicles with the ‘Advanced’ key, the start/stop button will not work and the boot will not release.
• The parking lights may stay on permanently if the system is ‘awakened’ (e.g. a remote keyless entry unlock command) while in the ‘fall-asleep’ mode, requiring the control module to be reprogrammed.
• The 12-volt power outlets may not work due to a problem with the software in the convenience control module – reprogramming may also correct other problems such as remote keyless entry and the boot light not illuminating.
• The door seals may come loose due to poor adhesive and require replacement.
• When attempting to use an an iPod, the error message ‘unit or cable type not supported’ may appear – improved cables were subsequently released which fixed this problem.

Recalls: Audi F5 A5 Cabriolet

Overview

Manufacturers, or importers, issue recalls for defects or faults which have the potential to cause injury. Generally, manufacturers will inform the original buyers if their vehicle is subject to a recall and of the steps required to remedy the defect or fault. Please note that the recalls below (if any) are for Australian-delivered vehicles only. Furthermore, the number of recalls should not be taken as an indication of a model’s reliability or its safety more generally.

Recalls: Audi F5 A5 Cabriolet

Audi F5 A5 Cabriolet: connections on front axle could loosen

In March 2019, recall campaign 40O2 was issued for Audi F5 A5 Cabriolets that were available for sale in Australia from 10 September 2018 to 10 October 2018. In these vehicles, individual bolted connections on the front axle may not have been tightened to the specified torque. The bolted connections may therefore settle and loosen over time – this could affect wheel control, posing a risk of injury to injury to vehicle occupants and other road users. For the VINs of the recalled vehicles, please see PRA 2019/17300.

2017-18 Audi F5 A5 Cabriolet: tread chunking hazard

In March 2019, recall campaign 44O6 was issued for Audi F5 A5 Cabriolets manufactured between September 2017 and June 2018, and fitted with 265/30 R20 Dunlop Sport Maxx RT Noise Shield tyres. These tyres did not fully comply with the approval test requirements of UN/ECE R30 which was the evidence used to certify to Australian Design Rule ADR 23/02. In the top speed range permissible for this tyre, tread chunking could occur (i.e. sections of the tyre tread could separate). For the VINs of the recalled vehicles, please see PRA 2019/17398.

2019 model year Audi F5 A5 Cabriolet: shock absorber failure

In June 2019, recall campaign 40O6 was issued for Audi F5 A5 Cabriolets because the shock absorber may fail and cause separation of suspension components. If the vehicle was in motion, the driver may lose control and this would pose a hazard to vehicle occupants and other road users. For the VINs of the recalled vehicles, please see PRA 2019/17595.

2017-20 Audi F5 A5 Cabriolet 2.0 TFSI MHEV: starter-alternator could ignite

In July 2020, recall campaign 27H2 was issued for Audi F5 A5 Cabriolets that had 2.0 TFSI engine and mild hybrid (MHEV) systems, and were manufactured between May 2017 and March 2020. In these vehicles, moisture may enter a gap in the housing of the starter-alternator and cause that component to overheat. If this occurred, the component could ignite and the subsequent fire posed a risk of injury to vehicle occupants and persons, and risk of damage to property. For the VINs of the recalled vehicles, please see PRA 2020/18379.

2018-21 Audi F5 A5 Cabriolet: seatbelt warning may operate occasionally

In July 2021, recall campaign 90P5 was issued for 2018-21 Audi F5 A5 Cabriolet vehicles. The seatbelt warning (acoustic warning tone and visual display) may operate occasionally, rather than continuously, in circumstances such as a seatbelt not fastened or unfastened while the vehicle was moving. If the warning did not sound continuously, a seatbelt may be unbuckled without the driver being informed. In the event of a collision, this condition increased the risk of injury to vehicle occupants. For the VINs of the recalled vehicles, please see REC-001650.

2019-21 Audi F5 A5 Cabriolet: rear axle nuts could break and cause loss of control

In September 2021, recall campaign 42L1 was issued for 2019-21 Audi F5 A5 Cabriolet vehicles. Some nuts fitted to the rear axle assembly did not meet manufacturing specifications and could therefore break. A broken nut may lead to increased movement between the wishbone and hub carrier, and a change in the wheel alignment on the rear axle. These conditions could cause sudden and uncontrollable movement of the rear axle, thereby increasing the risk of injury and death to vehicle occupants and other road users. For the VINs of the recalled vehicles, please see REC-001665.

2019-21 Audi F5 A5 Cabriolet: misalignment of rear axle from previous recall

In March 2022, recall campaign 42L5 was issued for 2019-21 Audi F5 A5 Cabriolet vehicles. The previous replacement of the rear axle clamping nuts as part of recall 42L1 may have caused misalignment of the rear axle assembly; this could result in excessive wear to the rear tyres, and may result in a sudden flat tyre and subsequent loss of vehicle control. These circumstances increased the risk of a collision and injury to vehicle occupants and other road users. For the VINs of the recalled vehicles, please see REC-005076.

2023 Audi F5 A5 Cabriolet: incorrectly welded seat frame

In November 2023, recall campaign 72N5 was issued for 2023 Audi F5 A5 Cabriolets. Due to a manufacturing defect, the outer backrest frame of the front seats may have been incorrectly welded. As a result, the seat frame could fracture. In the event of a collision, a fractured seat frame could increase the risk of injury to vehicle occupants. For the VINs of the recalled vehicles, please see REC-005841.

Problems and faults: Audi F5 A5 Cabriolet

Overview

This section identifies potential problems, causes and fixes based on the experiences of owners and repairers, online sources and technical service bulletins. This information is provided solely for reference purposes and AustralianCar.Reviews recommends that only properly qualified persons carry out repairs or modifications. Furthermore, the number of items below should not be taken as an indicator of a model’s reliability or the frequency with which they may occur.

To report a problem or fault to the AustralianCar.Reviews team, please use the Contact Us form. Note that AustralianCar.Reviews does not offer advice on automotive problems or disputes; such enquiries will not receive a reply. For vehicles purchased from dealers after 1 January 2011, please see our Australian Consumer Law fact sheet.

Audi F5 A5 Cabriolet: problems and faults

No information regarding common problems and faults is currently available for the Audi F5 A5 Cabriolet.

Released in Australia in September 2017, the Audi F5 A5 Cabriolet was a four-seat convertible with a soft-top roof. Manufactured in Germany, the Audi F5 A5 Cabriolet range for Australia consisted of front-wheel drive 2.0 TFSI variants and all-wheel drive 2.0 TFSI quattro variants. Both variants had seven-speed dual clutch transmissions (Audi’s ‘S tronic’) as standard…Read full Audi F5 A5 Cabriolet review

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Released in October 2009, the Audi 8F7 Series I (8F7.I) A5 was a two-door, four-seat convertible with a power-operated soft-top roof. Manufactured in Ingolstadt, Germany, the A5 Cabriolet range initially consisted of the 2.0 TFSI, 3.2 FSI and 3.0 TDI variants, all fitted with a seven-speed double clutch transmission (Audi’s ‘S-Tronic’) and quattro all-wheel drive system. In 2010, however, the range was expanded with the introduction of a front-wheel drive 2.0 TFSI variant fitted with an eight-speed continuously variable transmission (CVT)… Read full Audi 8F7 A5 Cabriolet review

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Images: Audi 8F7.II A5 Cabriolet (2012-16)

Released in February 2012, the Audi 8F7 Series II (8F7.II) A5 Cabriolet introduced an expanded range with the addition of the 1.8 TFSI and 2.0 TDI variants. Furthermore, the 3.2 FSI was effectively replaced by the more powerful 3.0 TFSI, while the 2.0 TFSI and 3.0 TDI benefited from power upgrades. Visually, the 8F7.II A5 Cabriolet could be identified by its redesigned head- and tail-lights, larger front air intakes, sharper bonnet edges and new headlights with LED running lights. Inside, there new materials, a new multi-function steering wheel, white instrument illumination and revised switchgear.

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Carbuyer: 2017 Audi F5 A5 Cabriolet review

Please note that these videos are applicable to vehicles as they are supplied to their respective markets. As such, the features, prices and performance of the vehicles in these videos may differ from those which are supplied in Australia.

Carbuyer: 2013 Audi 8F7.II A5 Cabriolet review

Note

Please note that these videos are applicable to vehicles as they are supplied to their respective markets. As such, the features, prices and performance of the vehicles in these videos may differ from those which are supplied in Australia.