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September 10, 2014 Service bulletin

Customer vehicle is fitted with unauthorized ECM tuning

Audi technical service bulletin A011491 2028842- for 2009-2010 Audi A4, 2009-2016 Audi A6 and 2009-2016 Audi Q5 and others.

Bulletin number
A011491 2028842-
Component
Equipment: other: owners/service/other manual
Summary
Customer vehicle is fitted with unauthorized ECM tuning. All systems on Audi vehicles are engineered to work together using the factory calibrations, which have been extensively tested and validated before the vehicle is released for sale. The Audi warranty coverage is based on the results of developing the vehicle under the factory calibration. If a vehicle is equipped with unauthorized hardware or software tuning, it can cause stress on vehicle components outside of intended design limits, and can cause damage and additional wear. Subsequently, factory powertrain warranty coverage is reduced or voided.

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