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Service bulletin B720417

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10145319
Published by NHTSA2018-10-09
Manufacturer's numberB720417
Manufacturer's date2018-07-01
NHTSA componentSEAT BELTS:FRONT:WARNING LIGHT/DEVICES

NHTSA's summary

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.

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

Vehicles listed
BMW 530E2018
BMW 530I2017, 2018
BMW 540D2018
BMW 540I2017, 2018
BMW 640I2018
BMW 740LE2017 to 2018
BMW 740LI2016 to 2018
BMW 750LI2016 to 2018
BMW M550I2018
BMW M760LI2017 to 2018
BMW X32018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20193732019-07-31. Seats And Restraints
20180482018-01-24. Seats And Restraints

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
B7204172020-04-27. 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.
B7204172019-10-21. 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.
B7204172019-02-25. 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.
B7204172018-11-26. 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.