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The problem: A rattling noise may be heard coming from the engine upon cold startup. This may be due to a faulty timing-chain tensioner.
Vehicles affected by service bulletin:
- 2011 Audi A6
- 2012 Audi A6
- 2013 Audi A6
- 2014 Audi A6
- 2015 Audi A6
- 2011 Audi A7
- 2012 Audi A7
- 2013 Audi A7
- 2014 Audi A7
- 2015 Audi A7
- 2013 Audi A8
- 2014 Audi A8
- 2015 Audi A8
- 2013 Audi Q5
- 2014 Audi Q5
- 2015 Audi Q5
- 2011 Audi Q7
- 2012 Audi Q7
- 2013 Audi Q7
- 2014 Audi Q7
- 2015 Audi Q7
Equipped with 3.0-liter engine.
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Corrective action: Dealers will replace both timing-chain tensioners.
Warranty info: This service is being performed free of charge under Audi's new-car or extended warranty, whichever applies.
What owners should do: Call your local dealer with your vehicle's identification number to determine if it's involved in this service bulletin. You can call Audi at 800-822-2834 or the National Highway Traffic Safety Administration at 888-327-4236. Reference TSB No. 151628.
Need to find a dealer for service? Go to Cars.com Service & Repair to find a local dealer.
Editor's note: This is only one of dozens of service bulletins issued each month by automakers. Please check your automaker's website to see if your vehicle has any service bulletins pending.
Check for recalls here on Cars.com.
