# Service bulletin B511621

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: 10201142
- Published by NHTSA: 2021\-09\-07
- Manufacturer's number: B511621
- Manufacturer's date: 2021\-07\-01
- NHTSA component: POWER TRAIN

## NHTSA's summary

Noises from the center console shifter cover at low speeds. The noise can be affected by pressing the gearshift lever knob.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10201142-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10201142-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2021 BMW M3
- 2021 BMW M4

## Other bulletins for the same vehicles and component

- [B340921](/bulletins/10203335.md), 2021-11-08, Service bulletin: POWER TRAIN:AXLE ASSEMBLY. A turbine\-like noise can be heard from the rear axle while deceleration during the first 300 miles of operationwhen braking from low speed.

JSON: [/v1/bulletins/10201142](/v1/bulletins/10201142)

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