Audi A4 2009–2012 — technical service bulletin
Bulletin A271214 2031145- · NHTSA communication 10122795 · issued Oct 12, 2012
Technical service bulletin
communication type
Electrical System
component
2009–2012
model years
32
vehicle entries
Official summary
complaints are reported by the customer regarding electrical features and functions in the vehicle. One or more warning lights on in cluster. The DIS or other displays in cluster are blank. MMI does not function. Windows do not function. LED indicators in various buttons inside the vehicle do not light up. The voltage regulator on the alternator can sporadically fail causing the electrical system to experience too high of voltage. As a result, the affected vehicle electronic components go in to high voltage protection and deactivate sensitive displays and indicators to prevent electrical damag
Vehicles covered
- 2009 Audi A4
- 2010 Audi A4
- 2011 Audi A4 Avant
- 2012 Audi A4 Avant
- 2009 Audi A4 Cabriolet
- 2009 Audi A5
- 2010 Audi A5
- 2011 Audi A5
- 2012 Audi A5
- 2010 Audi A7
- 2011 Audi A7
- 2009 Audi C6
- 2010 Audi C6
- 2010 Audi C7
- 2011 Audi C7
- 2009 Audi D3
- 2010 Audi D3
- 2010 Audi D4
- 2011 Audi D4
- 2009 Audi Q5
- 2010 Audi Q5
- 2011 Audi Q5
- 2012 Audi Q5
- 2009 Audi Q7
- 2010 Audi Q7
- 2011 Audi Q7
- 2009 Audi R8
- 2010 Audi R8
- 2011 Audi R8 Spyder
- 2010 Audi S5 Cabriolet
- 2011 Audi S5 Cabriolet
- 2012 Audi S5 Cabriolet
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.