Recalls: Audi B9 A4
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 B9 A4
2017 model year Audi B9 A4: airbags and pre-tensioners may not deploy as intended
In March 2017, a recall was issued for 2017 model year Audi B9 A4 and A4 Avant vehicles. In these vehicles, irregularities in the mix ratio of the igniting agent in some airbag units or seatbelt pre-tensioners could lead to the airbags or belt pre-tensioners not deploying in the event of a collision. As such, the risk of injury for the front occupants of the vehicle was increased. For the VINs of the recalled vehicles, please see PRA 2017/15964.
2015-16 Audi B9 A4 2.0 TFSI: coolant pump may catch fire
In May 2017, a recall was issued for Audi B9 A4 vehicles that had 2.0-litre turbocharged petrol engines (Audi’s ‘2.0 TFSI’) and were manufactured prior to the end of 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.
2015-17 Audi B9 A4 Sedan and A4 Avant: Bang & Olufsen sound system
In April 2018, a recall was issued for Audi B9 A4 Sedan and A4 Avant vehicles that had Bang & Olufsen sound systems and were manufactured prior to October 2017. In these vehicles, the ends of aluminium trim strips in the front or rear door loudspeakers could become detached and protrude. If the driver or passengers were to make contact with the sharp edges of these trim strips, cuts or other injuries could occur. For the recalled vehicles, all four aluminium trim strips were to be replaced. The VINs of the recalled vehicles are available at PRA 2018/16738.
2019 model year Audi B9 A4: shock absorber failure
In June 2019, recall campaign 40O6 was issued for Audi B9 A4 vehicles 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 B9 A4 2.0 TFSI MHEV: starter-alternator could ignite
In July 2020, recall campaign 27H2 was issued for Audi B9 A4 vehicles 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 B9 A4: seatbelt warning may operate occasionally
In July 2021, recall campaign 90P5 was issued for 2018-21 Audi B9 A4 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 B9 A4: rear axle nuts could break and cause loss of control
In September 2021, recall campaign 42L1 was issued for 2019-21 Audi B9 A4 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 B9 A4: misalignment of rear axle from previous recall
In March 2022, recall campaign 42L5 was issued for 2019-21 Audi B9 A4 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 B9 A4: incorrectly welded seat frame
In November 2023, recall campaign 72N5 was issued for 2023 Audi B9 A4 vehicles. 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 B9 A4
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.
Problems and faults: Audi B9 A4
No troubleshooting information is currently available for the Audi B9 A4.
