Audi A4 Allroad 2010–2014 — technical service bulletin
Bulletin A801406 2033806- · NHTSA communication 10122297 · issued Mar 11, 2014
Technical service bulletin
communication type
Engine and Engine Cooling
component
2010–2014
model years
26
vehicle entries
Official summary
Supersedes Technical Service Bulletin Group 80 number 13-05 dated September 11, 2013. Malfunction Indicator Lamp is on. Climate system heating performance is insufficient. Coolant level warning is on. Engine temperature is elevated. "Limp Home" mode is active. Faults are stored in the transmission control module (address word 02). Coolant loss is found from one or more control valves: N82, N509, or N488. Coolant may have migrated into the wiring harness through the connector and into various control units. Climate system heating performance is insufficient due to coolant loss, or due to a faul
Vehicles covered
- 2013 Audi A4 Allroad
- 2014 Audi A4 Allroad
- 2012 Audi A4 Avant
- 2012 Audi A5
- 2013 Audi A5
- 2012 Audi A5 Cabriolet
- 2013 Audi A5 Cabriolet
- 2014 Audi A5 Cabriolet
- 2012 Audi A6
- 2013 Audi A6
- 2012 Audi A7
- 2013 Audi A7
- 2010 Audi A8
- 2011 Audi A8
- 2012 Audi A8
- 2013 Audi A8
- 2012 Audi Q5
- 2013 Audi Q5
- 2014 Audi Q5
- 2011 Audi Q7
- 2012 Audi Q7
- 2013 Audi Q7
- 2014 Audi Q7
- 2012 Audi TT Roadster
- 2013 Audi TT Roadster
- 2014 Audi TT Roadster
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.