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frequency with which they may occur.
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Toyota Rukus: 2AZ-FE oil consumption
2.4-litre 2AZ-FE engine is susceptible to excessive oil consumption due to oil getting
past the piston rings and into the combustion chamber. There have been
reports of excessive oil consumption for 2AZ-FE powered Rukus vehicles with
mileages as low as 70,000 kms, though it is more commonly experienced from
100,000 to 120,000 kms.
In August 2011, Toyota issued the TSB #0094-11
which noted that 2006 to 2011
model year vehicles with the 2AZ-FE engine may experience excessive oil
consumption. In TSB #0094-11, Toyota prescribed an oil consumption test in
which oil consumption would be considered excessive if it exceeded more than
1 quart (approximately 1 litre) of oil for 1200 miles (1930 km) of normal
driving. If this threshold was exceeded, the piston assembly (i.e. pistons
and piston rings) would be replaced – this required the engine to be removed
from the vehicle.
In January 2015, Toyota USA initiated a ‘Warranty Enhancement Program’ known
as Limited Service Campaign (LSC) ZE7 for the 2AZ-FE engine. As part of this
- Toyota informed owners that they could seek reimbursement for the
cost of previous repairs to address excessive oil consumption;
- Owners were advised that they could have an engine oil consumption
test to determine if their vehicle was experiencing excessive oil
consumption. It is understood that the threshold for this test was the
same as described in TSB #0094-11 (i.e. 1 quart per 1200 miles); and,
- For vehicles with excessive oil consumption, the pistons would be
replaced at no cost to the owner.
As part of the warranty enhancement, the ‘Primary Coverage’ period lasted
until October 31, 2016, regardless of mileage. Once the ‘Primary Coverage’
period ended, a ‘Secondary Coverage’ period commenced and was applicable
from ten (10) years from the date of first use or 150,000 miles (241,350
kms), whichever occurred first.