Defect
On certain vehicles, the oil strainer for the turbocharger oil supply could get blocked. If this happens, a turbocharger could fail. This could cause loss of engine power and/or cause the engine to stall. Note: This problem could cause different warning messages to display or the engine oil warning light to turn on.
Safety Risk
A sudden loss of engine power could increase the risk of a crash.
Remedy
Audi will notify owners by mail and instruct you to take your vehicle to a dealership to replace the oil strainer for the turbocharger oil supply. The dealer will also inspect and document the performance of the boost pressure system and change the engine oil.