Service bulletin B720321
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 | 10200485 |
| Published by NHTSA | 2021-08-23 |
| Manufacturer's number | B720321 |
| Manufacturer's date | 2021-05-01 |
| NHTSA component | SEAT BELTS |
NHTSA's summary
M5 CS PRECRASH SAFETY BELT TENSIONING TRIGGERS PREMATURELY IN CERTAIN SITUATIONS: In certain situations, when the vehicle is being driven more dynamically and repeated heavy braking may berequired, the Precrash Safety Belt tightening application may activate even though there is no presence of a hazardous situation.
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
Seat belts
| BMW M5 | 2018, 2019, 2020, 2021 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| B720417 | 2020-04-27. Service bulletin. FALSE WARNINGS THAT THE FRONT PASSENGER SEAT IS OCCUPIED WITHOUT THE SEAT BELT BUCKLED: This Service Information Bulletin (Revision 10) replaces SI B72 04 17 dated September 2019. Acoustic and visual warnings indicate that the front passenger seat is occupied and the safety belt is not fastened when the seat is actually unoccupied. If the situation is currently present sit in the seat and move the seat to a slightly different position. The POL (Passenger Occupancy Light) light should now function correctly. In some cases the Air bag Warning Light was illuminated. |
|---|---|
| B720417 | 2019-10-21. Service bulletin. FALSE WARNINGS THAT THE FRONT PASSENGER SEAT IS OCCUPIED WITHOUT THE SEAT BELT BUCKLED: Acoustic and visual warnings indicate that the front passenger seat is occupied and the safety belt is not fastened when the seat is actually unoccupied. |
| B720417 | 2019-02-25. Service bulletin. FALSE WARNINGS THAT THE FRONT PASSENGER SEAT IS OCCUPIED WITHOUT THE SEAT BELT BUCKLED. Acoustic and visual warnings indicate that the front passenger seat is occupied and the seat belt is not fastened. |
| B720417 | 2018-11-26. Service bulletin. FALSE WARNINGS THAT THE FRONT PASSENGER SEAT IS OCCUPIED WITHOUT THE SEAT BELT BUCKLED. Acoustic and visual warnings indicate that the front passenger seat is occupied and the seat belt is not fastened, when the seat is actually unoccupied. If the situation is currently present, sit in the seat and move the seat to a different position then the POL (Passenger Occupancy Light) light will function correctly. In some cases the Air bag Warning Light was illuminated. Advanced Crash Safety Module (ACSM) fault "930A1C - Front passenger seat occupancy detection transmitting fault (moisture)" is stored. 1. Electronics (for example smart phones or laptops) are connected to the USB charging port or cigarette lighter and placed on the seat. 2. The seat was wet (e.g. very high humidity, spilled liquids or rain). 3. Faulty plug connection to Evaluation Electronics CIS (Capacitive Interior Sensing). 4. Excessive spacing between seat mat sensor signal wires and their grounding shield sleeve. * Drying the seat mat due to moisture. * If there is no moisture, secure loose cables and install 2 cable ties * If the 2 cables ties are already installed properly, replace the seat mat * Statement added to SI - do not replace the CIS electronics or the ACSM module for this siutation. |