Skip the auto shop - Our mechanics make house calls

Q: Safety belt and airbag warning lights on - 2010 BMW 538xi

asked by on

The safety belt and airbag warning lights illuminated on the passenger’s side of my car. Plus, when no one is in the passenger’s seat the front passenger’s seat light does not come on. This is intermittent but has occurred many times. I am researching and studying about this problem. What is causing this and how do I fix it?

The SRS system should have faults read out but based on your description, the seat mat sensor in the passenger is most likely the cause. The seat occupancy sensor is used in both determining air bag deployment and seatbelt pyrotechnic firing logic so if the seat mat sensor is faulty both systems are affected. Fortunately, the seat mat sensor is part of the seat bottom fabric so it can be removed from the seat frame and replaced. However, this is a dealership only item. You may want to enlist the help of a mechanic who will be able to interrogate the SRS system and repair the airbag warning light and seatbelt light correctly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Safety belt and airbag warning lights on - 2010 BMW 538xi

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Airbag warning light is always on

Greetings! Thank you for writing in about this problem. This is a common problem to that generation of Sienna. In January of 2014, Toyota released Technical Service Bulletin (TSB 0069-12) for this specific concern. The TSB outlines the diagnostic procedure...

Q: Problem with airbag light.

A common reason airbag lights come on is because something is interfering with the seat belt switch — the sensor that detects if the belt is properly fastened. If there is nothing in the seat belt I would have a...

Q: No sound coming from speakers - BMW 525xi

This sounds like an amplifier failure. Fortunately, this is not a dealer specific item and remanufactured amplifiers are available. The equipment level of the sound system needs to be determined in order to locate the proper amplifier and it can...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...