Audi Q5 2010–2015 — technical service bulletin
Bulletin A971546 2040221- · NHTSA communication 10120007 · issued Apr 2, 2015
Technical service bulletin
communication type
Visibility
component
2010–2015
model years
6
vehicle entries
Official summary
The rear wiper is not functioning or only functions intermittently. Corrosion at the B538 splice of the rear wiper motor control circuit can cause an excessive voltage drop, resulting in an out of range control signal.
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.