# Service bulletin B510921

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: 10198902
- Published by NHTSA: 2021\-07\-06
- Manufacturer's number: B510921
- Manufacturer's date: 2021\-05\-01
- NHTSA component: ELECTRICAL SYSTEM; BACK OVER PREVENTION; VISIBILITY; SERVICE BRAKES, HYDRAULIC

## NHTSA's summary

GROANING FROM THE SIDE WINDOWS: There is a groaning noise present from the area where the side windows meet the convertible top while driving. Insufficient seal pressure against the side windows.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10198902-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10198902-9999.pdf)

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

## Components

Brakes, Driver assistance, Electrical system, Glass, wipers and mirrors, Backup camera

## Vehicles listed

- 2015 to 2016 BMW 228I
- 2017 to 2021 BMW 230I
- 2015 to 2016 BMW M235I
- 2017 to 2021 BMW M240I

## Other bulletins for the same vehicles and component

- [B340517](/bulletins/10174009.md), 2020-04-20, Service bulletin: BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC; WHEELS; POWER TRAIN. TICKING NOISE WHILE CORNERING WITHOUT THE BRAKES APPLIED: This Service Information Bulletin \(Revision 3\) replaces SI B34 05 17 dated September 2017. Ticking noise coming from front wheel while cornering without brakes applied noticeable at low speeds. The vehicle must be moving. See attached video V34 01 20 Note: For a similar noise heard when parking with the brakes applied refer to SIB 31 01 12. Microscopic movement of the contact interface between the inner brake disc and the wheel bearing flange on vehicles equipped with lightweight brake discs.
- [B660715](/bulletins/10147270.md), 2018-11-05, Service bulletin: BACK OVER PREVENTION; BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; BACK OVER PREVENTION: AUTOMATIC SYSTEM BRAKING. "After activation, the PMA \(Parking Maneuvering Assistant\) or PDC \(Park Distance Control\) system stops functioning and a CCM \(Check Control Message\) is displayed advising the driver of the failure. AFFECTED VEHICLES This Service Action involves F22 \(2 Series Coupe\) and F23 \(2 Series Convertible\) models produced from 3/03/2015 to 6/30/2015. Please perform it before customer delivery or the next time this vehicle comes to your workshop. Vehicles which require this Service Action to be completed will show it as ""Open"" when checked either in the ""Service Menu"" of DCSnet \(Dealer Communication System\) or with the Key Reader. Software error in the PMA control unit"

JSON: [/v1/bulletins/10198902](/v1/bulletins/10198902)

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