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2018 BMW 540I

Owner reports · Recalls · Investigations

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There is not enough comparable history to draw a useful model-year comparison.

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Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 4 of 31 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Air Bags. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Seat Belts. Review the 11 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Seats. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

3 crash reports0 fire reports2 injury reports

Air Bags complaints

14 reports
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Mileage unknown · Apr 5, 2026
Air BagsElectrical SystemSeats

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 …

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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.

NHTSA ODI #11729268

Mileage unknown · Sep 10, 2025
Air BagsSeat Belts

"Passenger Restraint System (Malfunction)" warning appears on the main screen and instrument panel blocking other information and cannot be removed from instrument panel WHILE THE SEATBELT HAS WORKED NORMAL. I researched the problem and found several threads about this problem on the BMW owners forums and found several discussi…

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"Passenger Restraint System (Malfunction)" warning appears on the main screen and instrument panel blocking other information and cannot be removed from instrument panel WHILE THE SEATBELT HAS WORKED NORMAL. I researched the problem and found several threads about this problem on the BMW owners forums and found several discussions by numerous owners that said it is FAULTY SENSOR problem which is WIDESPREAD and deserves a recall. The odometer reading of this car, which was purchased in 2017, is about 28,000 miles now; the problem started when the odo was about 18,000. As a faulty sensor problem, or a real malfunction problem, a widespread problem started on a lightly used car at low odometer reading is a serious problem that the manufacturer should take care of. In the forum discussions, it was said that the problem might be triggered by putting a cold drink of a bag on the passenger seat. I never put a cold drink on it but did backpacks. Putting a backpack on a car seat should be a normal thing. In the forum some reported dealers fixed the problem free of charge and some refused and would charge thousands of dollars. My dealer refused to fix it for free. Machines, and humans, make mistakes and should be allowed to be reset/corrected. That the manufacturer designed and installed a known widespread fault sensor, does not allow the fault to reset or correct, and force owners to pay thousands of dollars to have dealers fix the faulty sensor warnings, created at least the appearance of impropriety of undue profiteering. Please help us consumers to have BMW take responsibility to fix its problems. Thank you.

NHTSA ODI #11686413

Mileage unknown · Mar 13, 2025
Air BagsSeat BeltsSeats

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…

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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.

NHTSA ODI #11648020

Mileage unknown · Jan 6, 2025
Air BagsElectrical System

1) Passenger restraint system malfunction. According to information on the web and several BMW forums, this is a common problem on these vehicles and it is a serious and inherently unsafe issue that should necessitate a recall from the manufacturer. The root cause is typically a malfunction of the passenger seat pad that is ut…

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1) Passenger restraint system malfunction. According to information on the web and several BMW forums, this is a common problem on these vehicles and it is a serious and inherently unsafe issue that should necessitate a recall from the manufacturer. The root cause is typically a malfunction of the passenger seat pad that is utilized by the passenger restraint system. BMW service repair cost is $2,700-$3,000. This is really outrageous given that it's part of the safety restraint system and many BMW 5 series (and likely others) have this problem.

NHTSA ODI #11634477

Mileage unknown · Jun 1, 2024
Air BagsSeat BeltsSeats

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. …

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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.

NHTSA ODI #11591952

Mileage unknown · May 2, 2024
Air BagsSeat Belts

Passenger seat restraint malfunction error code. Code will show fault when no one is in the passenger seat and if the person is light enough in weight, it will also pop up. The issue means that the air bag will not deploy when there is someone in the seat. A HUGE safety concern and online search shows that this is a very common …

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Passenger seat restraint malfunction error code. Code will show fault when no one is in the passenger seat and if the person is light enough in weight, it will also pop up. The issue means that the air bag will not deploy when there is someone in the seat. A HUGE safety concern and online search shows that this is a very common problem with BMW’s. BMW needs to issue a recall for this and fix the issue. Please note that the date the incident occurred below is an approximation and the code has been continuing since the first code came up.

NHTSA ODI #11586573

Mileage unknown · Jan 13, 2024
Air Bags

The vehicle throws a “passenger restraint system malfunction” every 5 minutes while driving. Based on discussions on bmw forums, this is a common issue among several models of BMW. The issue seems to be caused by loose wires/sensors beneath a he passenger seat.

NHTSA ODI #11565256

Mileage unknown · Sep 3, 2023
Air BagsSeat BeltsSeats

My car has around 74k miles on it. I had the following service request warning present itself this last week, 'Passenger restraint system malfunction:' on my drive into work in the morning. At first I dismissed the message and closed it to see if it would clear itself. It did not clear. It came back up a couple of minutes la…

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My car has around 74k miles on it. I had the following service request warning present itself this last week, 'Passenger restraint system malfunction:' on my drive into work in the morning. At first I dismissed the message and closed it to see if it would clear itself. It did not clear. It came back up a couple of minutes later. This time I left it alone. It proceeded to close itself and reopen every minute or so for about 10-15 minutes. Then it turned off and didn't come back on until I started my car later in the day and again the following morning. After taking it into the BMW dealer, the warning light was able to be replicated by the dealer and they've told me it is the seat mat (occupancy sensor) that was faulty. No outside influence appears to be at fault for the failure. Just that the part went bad. This is the diagnostic message given: CHECK CONTROL MESSAGE PRESENT FOR PASSENGER RESTRAINT MALFUNCTION. PERFORMED VEHICLE TEST, FAULTS PRESENT REGARDING PASSENGER FRONT SEAT OCCUPANCY DETECTION. PERFORMED TEST PLAN AND INDCATED PASSENGER SEAT OCCUPANCY DETECTION IS FAULTY. RECOMMEND REPLACING PASSENGER SEAT OCCUPANCY DETECTION. According to the dealer, if this if not fixed the airbag and/or seatbelt won't perform in the event of an accident. This appears to be a very common issue for BMW and similar to a 2017 BMW Technical Service Bulletin MC-10146769-9999. There was no warning of this issue prior to receiving the error message. There has been no opportunity for moisture to compromise the sensor (via window, sunroof or drinks spilled). Nor has any cellphone been stored on the passenger seat as I've read of some reasons provided to other Owners with the same error message. This seems to be an ongoing issue with this part for some time and it would seem to be an important issue for BMW to resolve in their design for the safety of the user.

NHTSA ODI #11542421

Mileage unknown · Jan 13, 2023
Air Bags

The passenger restraint system warning along with the airbag warning is displayed on the screen as a defect.

NHTSA ODI #11501672

Mileage unknown · Nov 29, 2022
Air Bags

- Passenger Airbag and passenger restrain system malfunction. - Malfunction of passenger airbag not deploying during accident even passenger seat is occupied with recommend weight. - Issues has been reported to Dealer. In turn dealer responds to as "External Factors" with issue could be presence of moisture in the seat. - Pa…

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- Passenger Airbag and passenger restrain system malfunction. - Malfunction of passenger airbag not deploying during accident even passenger seat is occupied with recommend weight. - Issues has been reported to Dealer. In turn dealer responds to as "External Factors" with issue could be presence of moisture in the seat. - Passenger Airbag light illuminates - Warning was never consistent. After reporting to dealership warning stays permanent and advised to replace seat mat sensor. - This has been a know issue over a decade and 2017-2018 manufactured BMW 5 series (G30). - This is clearly a poor material and workmanship costing people life's.

NHTSA ODI #11495361

Official recalls

2

19V684000 · Back Over Prevention: Sensing System: Camera

Sep 27, 2019

BMW of North America, LLC (BMW) is recalling certain 2018 540d, 2018-2020 530i, 530i xDrive, 540i, 540i xDrive, M550i xDrive, M5, 530e, 530e xDrive, X3 sDrive, X3 xDrive, X3 M40i, X3 M, and 2019-2020 X4 xDrive, X4 M40i, X4 M, X7 xDrive, X7 M50i, 740Li, 740Li xDrive, 750Li, 750Li xDrive, 8 Series Convertible and Coupe 840i, 840i xDrive, M850i xDrive, X5 sDrive, X5 xDrive, X5 M50i, X6 xDrive, X6 M50i, 330i, 330i xDrive, M340i, M340i xDrive, Z4 sDrive, Z4 M40i, 740Le xDrive and 745Le xDrive, 2018-2019 640i xDrive Gran Turismo and Rolls-Royce Phantom, 2019 M850i xDrive Gran Coupe and Rolls-Royce Cullinan and 2020 Toyota Supra vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rearview Mirrors."

Consequence & remedy

Consequence: The lack of an image in the back-up camera display increases the risk of a crash.

Remedy: BMW will notify owners, and dealers will update the back-up camera software, free of charge. The recall began November 8, 2019. Owners may contact BMW customer service at 1-800-525-7417 or Rolls-Royce at 1-877-877-3735. Toyota owners may contact Toyota customer service at 1-888-270-9371.

18V465000 · Engine And Engine Cooling:engine

Jul 11, 2018

BMW of North America, LLC (BMW) is recalling certain 2018 BMW 540d xDrive vehicles. The crankshaft sensor may be equipped with incorrect firmware, preventing the sensor from properly processing input from the crankshaft reluctor ring, possibly resulting in a vehicle stall. On September 12, 2018, BMW expanded the recall to a total of 5,309 vehicles including certain 2018-2019 BMW 540d xDrive, 230i M240i, M240i xDrive, X2 sDrive28i, X2 xDrive28i, X1 sDrive28i, X1 xDrive28i, 330i, 330i xDrive, 340i, 340i xDrive, 330i xDrive Gran Turismo, 530i, 530i xDrive, 540i, 540i xDrive, 530e, 530e xDrive, 640i xDrive Gran Turismo, 330e, 2019 430i Gran Coupe, 430i xDrive Gran Coupe, 440i Gran Coupe, 440i xDrive Gran Coupe, 430i, 430i xDrive, 440i, 440i xDrive, 740i, 740i xDrive, MINI Cooper, Cooper S, JCW, MINI Countryman (Cooper, Cooper All4, Cooper S, Cooper S All4, JCW All4), and MINI Clubman (Cooper, Cooper S, Cooper All4, Cooper S All4, JCW All4) vehicles.

Consequence & remedy

Consequence: A vehicle stall can increase the risk of a crash.

Remedy: BMW will notify owners, and dealers will replace the crankshaft sensor, free of charge. The recall began September 6, 2018. Owners may contact BMW customer service at 1-800-525-7417.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.