# Service bulletin Circular 37M9

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: 10186997
- Published by NHTSA: 2021\-03\-04
- Manufacturer's number: Circular 37M9
- Manufacturer's date: 2021\-02\-04
- NHTSA component: POWER TRAIN

## NHTSA's summary

An irregularity in the transmission case casting may cause incorrect seating of the exhaust bracket connection. This can result in an uneven contact surface, and as a result the bolts for the exhaust system bracket can become loose.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186997-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186997-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2021 AUDI RS 7

## Other bulletins for the same vehicles and component

- [TSB\_2059057\_15](/bulletins/11036901.md), 2026-09-04, Service bulletin: POWER TRAIN. This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
- [TSB\_2074808\_4](/bulletins/11033475.md), 2026-06-04, Service bulletin: POWER TRAIN. The high\-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content \(energy density\) being reduced. This reduction in the energy content, which is due to factors. Revised header. Added Model years
- [TSB\_2059057\_14](/bulletins/11033465.md), 2026-06-04, Service bulletin: POWER TRAIN. This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
- [TSB\_2059057\_13](/bulletins/11028433.md), 2026-02-06, Service bulletin: POWER TRAIN. This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.
- [TSB\_2074808\_3](/bulletins/11027358.md), 2026-01-07, Service bulletin: POWER TRAIN. This bulletin provides additoinal information to assist in determining the energy content of lithium\-ion high\-voltage batteries.
- [TSB\_2075681\_5](/bulletins/11022669.md), 2025-09-04, Service bulletin: POWER TRAIN. This bulletin provides informaoitn when there is droning noises/vibrations in tight corneres, in vehicles that have quattro with ultra technology.
- [TSB\_2062288\_5](/bulletins/11022635.md), 2025-09-04, Service bulletin: POWER TRAIN. This bulletin provides information when the electric steering column adjustment is not working; DTC B14BF01 is stored in the BCM 1.
- [TSB\_2075681\_4](/bulletins/11021455.md), 2025-08-05, Service bulletin: POWER TRAIN. This bulletin provides informaoitn when there is droning noises/vibrations in tight corneres, in vehicles that have quattro with ultra technology.
- [TSB\_2060560\_4](/bulletins/11021441.md), 2025-08-05, Service bulletin: POWER TRAIN. This bulletin providesi nformation when various DTCs are stored; high maximum temperature recorded for clutch K1.
- [TSB\_2075681\_3](/bulletins/11018977.md), 2025-06-03, Service bulletin: POWER TRAIN. This bulletin provides informaoitn when there is droning noises/vibrations in tight corneres, in vehicles that have quattro with ultra technology.

JSON: [/v1/bulletins/10186997](/v1/bulletins/10186997)

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