# Service bulletin A171669 2040644\-

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10118395
- Published by NHTSA: 2017\-10\-04
- Manufacturer's number: A171669 2040644\-
- Manufacturer's date: 2016\-03\-09
- NHTSA component: ENGINE

## NHTSA's summary

A metallic whistling or grinding sound is heard from the engine compartment when th evehicle is at idle speed. The sound usually occurs when the engine is warm. The MIL is sporadically on due to DTCs being stored in the ECM. A leak in the crankcase breather module can cause this condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10118395-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10118395-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2013 to 2016 AUDI A6
- 2013 to 2016 AUDI A7
- 2013 to 2016 AUDI A8

## Recalls for the same vehicles and component

- [2022133](/recalls/tc/2022133.md), 2022-03-23: Engine
- [22V178000](/recalls/nhtsa/22V178000.md), 2022-03-23: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
- [18V229000](/recalls/nhtsa/18V229000.md), 2018-04-11: ENGINE AND ENGINE COOLING:COOLING SYSTEM
- [2017002](/recalls/tc/2017002.md), 2017-01-04: Engine
- [17V002000](/recalls/nhtsa/17V002000.md), 2017-01-03: ENGINE AND ENGINE COOLING:COOLING SYSTEM
- [16V619000](/recalls/nhtsa/16V619000.md), 2016-08-24: ENGINE AND ENGINE COOLING:ENGINE

## Other bulletins for the same vehicles and component

- [SM 35\-2026](/bulletins/11036867.md), 2026-09-04, Other: ENGINE. This special notice is to inform dealers to return the parts listed and only order the successor parts going forward.
- [SM 01\-2026](/bulletins/11035797.md), 2026-08-05, Other: ENGINE. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
- [TSB\_2082323\_1](/bulletins/11034728.md), 2026-07-07, Service bulletin: ENGINE. This bulletin provides informaiton when the engine is not running smoothly, misfiring.
- [TSB\_2074640\_3](/bulletins/11034657.md), 2026-07-07, Service bulletin: ENGINE. This bulletin provides information when there is increased oil consumption; \>0.5ltr/1000 km.
- [TSB\_2051095\_10](/bulletins/11029368.md), 2026-03-03, Service bulletin: ENGINE. This bulletin provides information on the use of the Audi frequencly analysis app, and where the application can be downloaded.
- [TSB\_2021205\_10](/bulletins/11029367.md), 2026-03-03, Service bulletin: ENGINE. This bulletin provides information on VIN Plates, Safety Certification labels, and the ordering procedures.
- [TSB\_2060750\_5](/bulletins/11028398.md), 2026-02-06, Service bulletin: ENGINE. This bulletin provides information regarding UV leak additive for finding oil leaks.
- [TSB\_2074640\_2](/bulletins/11027356.md), 2026-01-07, Service bulletin: ENGINE. This bulletin provides information when there is increased oil consumption; \>0.5ltr/1000 km.
- [TSB\_2075530\_2](/bulletins/11016532.md), 2025-04-04, Service bulletin: ENGINE. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
- [A0124482014753\_13](/bulletins/11012476.md), 2025-01-07, Service bulletin: ENGINE. This bulletin provides information when the MIL is on; DTCs for misfire, air/fuel ratio imbalance, or lean fuel system stored in the ECM P030000.

JSON: [/v1/bulletins/10118395](/v1/bulletins/10118395)

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