# Service campaign B110521

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 campaign
- NHTSA id: 11012077
- Published by NHTSA: 2024\-12\-31
- Manufacturer's number: B110521
- Manufacturer's date: 2024\-12\-06
- Campaign id or software version: 0011160600
- NHTSA component: ENGINE

## NHTSA's summary

The belt pulley on the mechanical coolant pump may fracture allowing the engine drive belt to come off thecoolant pump and alternator.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012077-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012077-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2021 BMW 330I
- 2021 BMW 430I
- 2021 BMW 530I
- 2021 BMW X5
- 2021 BMW X6
- 2021 BMW X7

## Recalls for the same vehicles and component

- [2026040](/recalls/tc/2026040.md), 2026-01-30: Engine

## Other bulletins for the same vehicles and component

- [B110426](/bulletins/11035500.md), 2026-08-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM. The manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate.
- [B010324](/bulletins/11035497.md), 2026-08-03, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in\-service / delivery date.
- [B010324](/bulletins/11032731.md), 2026-05-18, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in\-service date.
- [B010126](/bulletins/11032729.md), 2026-05-18, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in\-service / delivery date.
- [B120224](/bulletins/11002827.md), 2024-07-02, Service campaign: ENGINE. VOLUNTARY EMISSIONS RECALL 24E\-A02: VALVETRONIC
- [B120224B](/bulletins/10253898.md), 2024-05-03, Service bulletin: ENGINE AND ENGINE COOLING. BMW AG has issued a Delivery Stop \(effective April 12, 2024\) on certain Model Year 2023 \- 2025 BMW vehicles that were produced between July 21, 2021, and April 11, 2024.
- [B120224A](/bulletins/10253896.md), 2024-05-03, Service bulletin: ENGINE AND ENGINE COOLING. BMW AG has issued a Delivery Stop \(effective April 12, 2024\) on certain Model Year 2023 \- 2025 BMW vehicles that were produced between July 21, 2021, and April 11, 2024.
- [B120224](/bulletins/10253342.md), 2024-05-03, Service bulletin: ENGINE AND ENGINE COOLING. BMW AG has issued a Delivery Stop \(effective April 12, 2024\) on certain Model Year 2023 \- 2025 BMW vehicles that were produced between July 21, 2021, and April 11, 2024.
- [B120721](/bulletins/10252038.md), 2024-04-01, Service bulletin: ENGINE AND ENGINE COOLING. Check Control message \(CCM\) indicates: \(ID 213\): Stop, exercising due care. Voltage supply The Service Engine Soon light is on with the following DME Fault Code: 21B209 \- Starter alternator / belt for 48V system \(OSA\_RIEMEN\_RISS\): Belt betweenCombustion engine and starter generator torn And/or one or more of the following other issues are also occurring: Noise in the area of the belt drive. Odor from the engine compartment. Smoke formation in the area of the belt drive. Drive belt damaged or prematurely worn. Torn drive belt.
- [B170122](/bulletins/10249425.md), 2024-02-01, Service bulletin: ENGINE AND ENGINE COOLING. The Check Control message below appears even though the coolant level is not below minimum when theengine is cold. Check Control message \(ID 166\): Top up coolant.

JSON: [/v1/bulletins/11012077](/v1/bulletins/11012077)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20campaign%20B110521&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11012077&vehicle=Service%20campaign%20B110521)