Audi A4 2012–2015 — technical service bulletin
Bulletin 26 14 23 2037812 · NHTSA communication 10212663 · issued Jul 21, 2014
Technical service bulletin
communication type
Structure
component
2012–2015
model years
4
vehicle entries
Official summary
These noises may be a result of contact between an exhaust heat shield and the body of the vehicle. Rattling noises are heard coming from underneath the vehicle.
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.