Audi A4 Allroad 2012–2015 — technical service bulletin
Bulletin A261423 2037812- · NHTSA communication 10122531 · issued Jul 21, 2014
Technical service bulletin
communication type
Structure
component
2012–2015
model years
4
vehicle entries
Official summary
Rattling noises are heard coming from underneath the vehicle. These noises may be a result of contact between an exhaust heat shield and the body of the vehicle.
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.