Six problems related to seats have been reported for the 2018 BMW 540. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 BMW 540 based on all problems reported for the 2018 540.
On and off system notification of "passenger restraint system malfunction" with and without a passenger in the seat. Also, the airbag off/disabled light on the instrument cluster illuminated. Can't seem to declare if it is an electrical shortage, seatbelt buckle related or passenger pressure sensor sensor in the seat. Find this to be a major safety concern should there be an accident, and unsure whether the airbags will deploy or not. BMW should investigate this concern.
I was just driving my BMW and a airbag light and a malfunction error popped up on my dashboard, that read that the passenger restraint system has malfunctioned. And I was doing some research on what was wrong with my car, and all the forums are indicating that this is a very common issue on these cars due to a bad seat occupancy sensor mat. To fix this you either still have to have an extended warranty if you don’t have one you have to pay upwards of 3,000$ to get this part replaced at a dealer. And me personally I don’t have the money to just spend on car repair of that amount and im sure alot of the other people with this same problem are in the same boat as me. This could be very dangerous because it puts all my passengers at risk if I were to get in a auto collision it would be devastating. I mean this should 100% be a recall because of this is a wide spread problem that puts many many people at risk. I haven’t been to the dealer with it yet, but I can self diagnose because countless people have been reporting on forums and online the same issue with the same error on the dash. My car hasn’t been in an accident yet so I haven’t had it inspected by insurance companies or police. This problem first appeared today and my heart dropped.
When I have a passenger in the car I will intermittantly get the warning "passenger restraint system malfunction" which will turn off the air bag to the passenger side when driving even when there is a passenger in the car. From forums it sounds like there is a pressure pad in the seat that is a very common malfunction for BMW. This seems like a pretty critical part to ensure the airbags are operational when a passenger is in the car, and feel it should not be as common a problem as it seems to be.
Constantly pops up a message for passenger restraint system malfunction. I had an accident where I swerved off the road into a ditch at about 60 mph. I the driver was not hurt and the passenger wouldn’t have been hurt either if it was for the passenger seat belt not locking correctly at first and then repeatedly locking and unlocking the entire time hurting his chest.
The seat occupancy sensor malfunctioned. The technician said the computer showed it had moisture that caused the problem. I had the sensor replaced and the repair shop siad there was no sign of moisture contamination. I took pictures of the seat cushion allow with the imbedded sensor and there is no sign of moisture. I feel the sensor was defective and BMW should have been responsible for the replacement but they use the excuse that moisture caused the problem.
Passenger seat indicator light keeps going off intermittently. Dealer says its a seat pad issue. We identified it in 2018 but dealer was not able to fix it and it continually keeps happening and didn't do anything because dealer did not fix it at that time. Now dealer is re-diagonising it saying it is a different diagnostic code but we have seen the same issue since we got the car. After reasearching this, there was a recall in 2017 with similar issues. It is related to the sensor and if not properly working, the airbags may not deploy when needed. This appears to be a safety feature of the car so should be recalled like previous. Please investigate.
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