# Service bulletin B511121

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: 10199297
- Published by NHTSA: 2021\-07\-19
- Manufacturer's number: B511121
- Manufacturer's date: 2021\-05\-01
- NHTSA component: EQUIPMENT; STRUCTURE:BODY:ROOF AND PILLARS; EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

ROOF TRIM STRIP LOOSE AT REAR: The roof trim strip may be loose at the last \(rearmost\) clip as shown. This can occur on either side of the roof, or on both sides.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199297-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199297-9999.pdf)

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

## Components

Body and frame, Equipment and accessories

## Vehicles listed

- 2021 BMW M4

## Other bulletins for the same vehicles and component

- [B410725](/bulletins/11027766.md), 2026-01-23, Service bulletin: STRUCTURE:BODY. While driving on a smooth and/or unevenroad, a “cracking” sound is heard from therear wheel arch area \(highlighted in orange\) on either the right or left side.
- [B410725](/bulletins/11022101.md), 2025-08-24, Service bulletin: STRUCTURE:BODY. While driving on a smooth and/or uneven road, a “cracking” sound is heard from the rear wheel arch area \(highlighted in orange\) on either the right or left side.
- [B610524](/bulletins/10249032.md), 2024-02-01, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. The Central Information Display goes black intermittently due to resets of the Head Unit \(HU\-H3\). FaultB7F8F9 â“ âHU\-H: Resetâ will be stored in the HU\-H3.
- [B120323](/bulletins/10239601.md), 2023-07-24, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. BMW AG has issued a Delivery Stop effective June 6, 2023 on certain Model Year 2023 \- 2024 BMW vehicles that were produced between October 26, 2022 and May 8, 2023.
- [B514616](/bulletins/10238081.md), 2023-06-26, Service bulletin: STRUCTURE:BODY:TAILGATE. Upon opening and closing the tailgate, a creaking/groaning sound can be heard from tailgate actuator.
- [B841422](/bulletins/10235206.md), 2023-05-01, Service bulletin: LANE DEPARTURE:LANE KEEP:NAVIGATION SYSTEM/SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). Customer is shown an incorrect GPS location in the vehicle \(i.e., Nav Map, coordinates\).
- [B651623](/bulletins/10235203.md), 2023-05-01, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Customer states there is no audio playback \(telephony, navigation, radio\) and system sounds \(PDC, turn indicators, acoustic signals\) may also have failed.
- [B610120](/bulletins/10233162.md), 2023-03-20, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE. Customer is unable to power up or charge accessories through a plug adapter inserted in the front 12\-volt power socket plug. Alternatively, it will only operate when constant downward hand pressure is maintained.
- [B841422](/bulletins/10230740.md), 2023-01-30, Service bulletin: EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). Customer is shown an incorrect GPS location in the vehicle \(i.e., Nav Map, coordinates\).
- [B613322](/bulletins/10230734.md), 2023-01-30, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Due to a software error, Remote Software Upgrade \(RSU\) and Remote Support are currently not possible. Additionally, the Integrated Owner's Handbook cannot be displayed.

JSON: [/v1/bulletins/10199297](/v1/bulletins/10199297)

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