Audi A4 Avant 2011–2012 — technical service bulletin
Bulletin A911399 2034923- · NHTSA communication 10124635 · issued Aug 5, 2013
Technical service bulletin
communication type
Equipment
component
2011–2012
model years
10
vehicle entries
Official summary
Sound system "pops" and loses audio for a few seconds (for vehicles with base sound system) or sound system loses audio for a few seconds and returns on its own (for vehicles with Bose or Bang & Olufsen sound system). If the sound does not return on its own, or is accompanied by relevant DTCs in the vehicle, another issue may be present. Verify the root cause before proceeding with this bulletin. HD radio does not output in Stereo. This bulletin only applies to vehicles with Navigation Plus (PR Number 8DY). The applicable vehicles can be clearly identified by the MMI control panel in the cente
Vehicles covered
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.