Service bulletin B652624
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 | 11009001 |
| Published by NHTSA | 2024-10-19 |
| Manufacturer's number | B652624 |
| Manufacturer's date | 2024-10-17 |
| NHTSA component | AIR BAGS |
NHTSA's summary
A check control message (CCM) for the restraint system (Air bag) appears. In the instrument cluster, the red air bag warning light lights up permanently. One of the following fault codes is stored in the ACSM (air bag control unit): 930949 - Knee airbag, driver: Short circuit to negative terminal 93094F - Knee airbag, front passenger: Short circuit to negative terminal 93094C - Knee airbag driver's side: Resistance too great 930952 - Knee airbag, front passenger: Resistance too great
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Air bags
| BMW X3 | 2022, 2023, 2024 |
|---|---|
| BMW X4 | 2022, 2023, 2024 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| InVehicle-InApp-Comm | 2026-02-05. Over-the-air update. The ACSM control unit, which controls the driving safety and driving dynamics sensor system, may be faulty. Cracks could have formed on the printed circuit board during production. In very rare cases, the crack can enlarge due to mechanical load and lead to failure of the control unit. In this case, the driver will be informed accordingly by various warning displays about the failure and deactivation of the driving safety functions as well as restricted driving dynamics functions. |
|---|---|
| B650122 | 2023-09-18. Service bulletin. A check control message (CCM) for the restraint system (Air bag) appears. In the instrument cluster, the red air bag warning light lights up permanently. |
| B650122 | 2023-01-03. Service bulletin. A check control message for the restraint system appears. In the instrument cluster, the red air bag warning light lights up permanently. One of the following fault codes is stored in the ACSM (air bag control unit): 930949 - Knee airbag, driver: short circuit to negative terminal 93094F - Knee airbag, front passenger: short circuit to negative terminal 93094C - Knee airbag driver's side: Resistance too great 930952 - Knee airbag, front passenger: Resistance too great. |
| SIB650122 | 2022-08-22. Service bulletin. A check control message for the restraint system appears. In the instrument cluster, the red air bag warning light lights up permanently. One of the following fault codes is stored in the ACSM (air bag control unit): 930949 - Knee airbag, driver: short circuit to negative terminal 93094F - Knee airbag, front passenger: short circuit to negative terminal. |
| SIB650122 | 2022-06-21. Service bulletin. A check control message for the restraint system appears. In the instrument cluster, the red air bag warning light lights up permanently. |