Technical Service Bulletin A171562 2040644- — 2015 AUDI S7

ENGINE AND ENGINE COOLING

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Bulletin Details

TSB ID A171562 2040644-
Manufacturer
Vehicle 2015 AUDI S7
Component ENGINE AND ENGINE COOLING
Communication Date

Bulletin Summary

A metallic whistling or grinding sound is heard from the engine compartment when the vehicle is at idle speed. The sound usually only occurs when the engine is warm. The MIL is sporadically on. DTC P2279 and DTC P0507 are stored in the ECM. A leak in the crankcase breather module (pressure regulating valve) can cause this condition.

About Technical Service Bulletins

A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.

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