On Audi vehicles with 4.0L TFSI engines manufactured within a specific period, the O-rings in the coolant...
Audi technical service bulletin 21F2 - Circular for 2013-2015 Audi A6, 2013-2014 Audi A8 and 2013-2015 Audi S6 and others.
- Bulletin number
- 21F2 - Circular
- Component
- Engine and engine cooling: engine: gasoline: turbo/supercharger
- Summary
- On Audi vehicles with 4.0L TFSI engines manufactured within a specific period, the O-rings in the coolant lines for the turbocharger may be damaged. This can result in leaks between the coolant lines and the turbocharger.
Owners of these vehicles have filed 186 complaints in the engine category.
Vehicles covered
VIN decoder
See the problems and recalls for an exact car
Buying a used Audi A6?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history