Audi Q7 2011–2012 — technical service bulletin
Bulletin 26M7CircularREV1 · NHTSA communication 10172995 · issued Mar 31, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2011–2012
model years
2
vehicle entries
Official summary
Under certain high load and/or highway driving conditions vehicle exhaust temperatures may increase catalyst aging, due to thermal stress, which could lead to elevated tailpipe emissions. Added work and claiming instructions in the event muffler flange studs break.
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.