# Service bulletin 26M7CircularREV1

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10172995
- Published by NHTSA: 2020\-04\-02
- Manufacturer's number: 26M7CircularREV1
- Manufacturer's date: 2020\-03\-31
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172995-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172995-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2011 to 2012 AUDI Q7

## Other bulletins for the same vehicles and component

- [TSB\_2082323\_1](/bulletins/11034728.md), 2026-07-07, Service bulletin: ENGINE. This bulletin provides informaiton when the engine is not running smoothly, misfiring.
- [TSB\_2021205\_10](/bulletins/11029367.md), 2026-03-03, Service bulletin: ENGINE. This bulletin provides information on VIN Plates, Safety Certification labels, and the ordering procedures.
- [TSB\_2060750\_5](/bulletins/11028398.md), 2026-02-06, Service bulletin: ENGINE. This bulletin provides information regarding UV leak additive for finding oil leaks.
- [TSB\_2075530\_2](/bulletins/11016532.md), 2025-04-04, Service bulletin: ENGINE. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
- [A0124482014753\_13](/bulletins/11012476.md), 2025-01-07, Service bulletin: ENGINE. This bulletin provides information when the MIL is on; DTCs for misfire, air/fuel ratio imbalance, or lean fuel system stored in the ECM P030000.
- [A1524532075530\_1](/bulletins/11009928.md), 2024-11-06, Service bulletin: ENGINE. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
- [A2424632074810\_2](/bulletins/11009327.md), 2024-10-28, Service bulletin: ENGINE. This bulletin provides information when ther is an Engine: start/stop system fault shown and start/stop system not is working; mileage below 50 km/32 miles.
- [1713362030197](/bulletins/10250432.md), 2024-02-20, Service bulletin: ENGINE AND ENGINE COOLING. Engine oil consumption \- Customer complaints, 3.0T TFSI Model Year 2009 ? 2012
- [1712342030197](/bulletins/10250431.md), 2024-02-20, Service bulletin: ENGINE AND ENGINE COOLING. Engine oil consumption too high, 3.0T TFSI Model Year 2009 \- 2012
- [1012092030197](/bulletins/10250428.md), 2024-02-20, Service bulletin: ENGINE AND ENGINE COOLING. Engine oil consumption too high, 3.0T TFSI Model Year 2009

JSON: [/v1/bulletins/10172995](/v1/bulletins/10172995)

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