Automotive BMW seatbelt buckle sensor recall

Published on May 21st, 2020 | by Daniel Sherman Fernandez


BMW seat-belt buckle sensor recall

BMW, the fault can trigger airbags and belt tensioners unnecessarily.

Take note that this recall is only affecting a small number of vehicles which were sold in Germany and North America. Seat-belt buckles are currently causing problems for some new BMW vehicles. In Munich, an incorrectly installed sensor system within the buckle can lead to a mistaken triggering of the airbags and belt tensioners provided for the seat. 

2020 BMW seatbelt buckle sensor recall

In Germany, the Federal Motor Transport Authority (KBA) is monitoring the recall, which affects 736 vehicles in Germany and 10,373 in North America. The KBA will call you back under reference number 9839, at BMW it runs under code 0072130200.

As part of the recall, the belt buckles of the affected cars are checked and replaced if necessary. Incidents with personal injury or property damage are as little known as the length of stay in the workshop. 

Recalled are these BMW models for dealers to replace the front seat belt buckles.

  • 2020 BMW X3 xDrive30e
  • 2020 BMW X4 xDrive30i
  • 2020 BMW X4 M40i
  • 2020 BMW X4M
  • 2020 BMW 330i
  • 2020 BMW 330i xDrive
  • 2020 BMW M340i
  • 2020 BMW 840i Gran Coupe
  • 2020 BMW 840i xDrive Gran Coupe
  • 2020 BMW M850i xDrive Gran Coupe
  • 2020 BMW M8 Gran Coupe
  • 2020 BMW X3 sDrive30i
  • 2020 BMW X3 xDrive30i
  • 2020 BMW X3 M40i
  • 2020 BMW X3M
  • 2020 BMW 840i xDrive Convertible

The problem is related to wiring in something called the Hall effect sensor in the front seat belt buckles.

2020 BMW seatbelt buckle sensor recall

BMW was performing a road test in January 2020 when a continuous audible and visual warning of the seat belt reminder system was noticed.

The supplier was contacted and engineers determined a production machine had been changed which inadvertently changed the tolerance between the Hall effect sensors and the seat belt buckles. Finally, BMW determined the wiring for the Hall effect sensor wasn’t manufactured to the specified length.


If the system detects a front seat occupant as unbelted when they are in fact wearing their seat belt, this would result in an audible warning and a visual warning symbol. 

Seat belts are one of the most important safety features in your vehicle. Seatbelts help prevent you from moving around too much in the seat while you’re driving. This is especially true in the event of a collision where the seat belt will lock and keep you in the seat even if the car rolls. This is why this recall is important and should be attended to if you are affected by it. 

This is not the first time that BMW is doing a recall for its new cars. BMW headquarters says no crashes or injuries have been reported. Concerned owners may contact their BMW dealer to check. 

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