# 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: 10199295
- Published by NHTSA: 2021\-07\-19
- Manufacturer's number: B510921
- Manufacturer's date: 2021\-05\-01
- NHTSA component: EQUIPMENT; VISIBILITY

## 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-10199295-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199295-9999.pdf)

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

## Components

Equipment and accessories, Glass, wipers and mirrors

## 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

- [B630418](/bulletins/11020927.md), 2025-07-28, Service bulletin: VISIBILITY/WIPER. One or more of the LED daytime running lights are dim or discolored.
- [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.
- [B652823](/bulletins/10242874.md), 2023-10-01, Service bulletin: EQUIPMENT. Customers may be experiencing one or more of these following issues with Bluetooth operation: Bluetooth cannot be switched on or off in the head unit \(HU\-H4\) Paired mobile devices cannot be deleted Customer is unable to make phone calls or stream music with mobile device Customer is unable to connect a new mobile device via Bluetooth Mobile device does not automatically reconnect via Bluetooth in the next drive cycle \(after short sleep cycle\)
- [B840822](/bulletins/10235205.md), 2023-05-01, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. The 3G network in the US has been shut down. This means that only the 4G network will be available. In the 4G network, voice calls will be transferred via the Voice over LTE \(VoLTE\) function. For this purpose, the SIM card must perform an IMS registration in the mobile communication network. Due to a production error, the telematics control units were delivered without an IMS configuration. The Connected Drive voice services \(Concierge Call, BMW Assistance, and emergency call voice\) can no longer be used regionally in the US in vehicle with telematics control units ATM\-1 and TCB\-4G. Voice control of the vehicle and all other telephone \(paired mobile devices\) functions are not affected. Emergency call location data is unaffected.
- [B662419](/bulletins/10225126.md), 2022-10-31, Service bulletin: EQUIPMENT:ELECTRICAL. Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column.
- [SIB650922](/bulletins/10224210.md), 2022-10-17, Service bulletin: EQUIPMENT:ELECTRICAL. The sound output intermittently drops out entirely. This can be reproduced with all audio sources as well as telephone and voice output.
- [SIB662419](/bulletins/10218384.md), 2022-08-22, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column. Note: Opening, closing and starting via the BMW Digital Key or the Digital Key Card are not affected.
- [SIB540222](/bulletins/10218374.md), 2022-08-22, Service bulletin: VISIBILITY:SUN/MOON ROOF ASSEMBLY. The sunroof and/or panoramic sunroof jams sporadically.
- [SIB410322](/bulletins/10218368.md), 2022-08-22, Service bulletin: STRUCTURE; EQUIPMENT. The driver and/or passenger side floor mat/carpet are soaked during/after a car wash.
- [TEC24](/bulletins/10216791.md), 2022-08-01, Service bulletin: EQUIPMENT. Tech24 Snap\-in Adapter Return

JSON: [/v1/bulletins/10199295](/v1/bulletins/10199295)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20B510921&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10199295&vehicle=Service%20bulletin%20B510921)