Audi A4 2008–2014 — technical service bulletin
Bulletin A261319 2027945- · NHTSA communication 10124670 · issued Aug 16, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
component
2008–2014
model years
18
vehicle entries
Official summary
Supersedes Technical Service Bulletin Group 26 number 13-18 dated May 22, 2013. Humming or metallic rattling noise from under the vehicle, heard most consistently during engine idle or slow acceleration. Initial inspection indicates that the noise is coming from the exhaust system. Relative movements in the rear mounting of the exhaust system (rear silencer).
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.