Audi A4 2009–2013 — technical service bulletin
Bulletin 45140820334123 · NHTSA communication 10251030 · issued Feb 11, 2014
Technical service bulletin
communication type
Service Brakes, Air
component
2009–2013
model years
5
vehicle entries
Official summary
ABS warning light on with additional warning lights on (EPB / TPMS / EPC / MIL) - wire harness damage
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.