2018 BMW 540I

31 complaints on file, page 1 of 2.

1. Filed Sep 8, 2026Failure Sep 4, 2026Kissimmee, FLSeat belts, Seats

   Seat belt/restraint system malfunction seat pad

   NHTSA complaint 11762733
2. Filed Sep 8, 2026Failure Sep 4, 2026Kissimmee, FLSeat belts, Seats

   Seat belt/restraint system malfunction seat pad

   NHTSA complaint 11762732
3. Filed Apr 5, 2026Failure Apr 5, 2026Jackson, NJAir bags, Electrical system, Seats

   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 complaint 11729268
4. Filed Jan 18, 2026Failure Jun 25, 2025Franksville, WIEngine

   For this item - Please refer to NTHSA RECALL 18V-465 : BMW Crank Sensor Recall 9/12/2018. In particular - this refers to a 2018 BMW 540ix. Specifically, "VEHICLES MAY HAVE BEEN MANUFACTUTRED WITH A CRANKSHAFT SENSOR, THAT DUE TO SENSOR FIRMWARE, CANNOT ACCURATELY PROCESS THE INPUT FROM THE CRANKSHAFT RELUCTOR RING. BASIS FOR RECALL POPULATION DETERMINATION: SUPPLIER PRODUCTION INFORMATION WAS USED TO IDENTIFY THE START AND END DATE OF THE AFFECTED CRANKSHAFT SENSORS WHICH THEN CORRELATED WITH ENGINE PRODUCTION AND VEHICLE ASSEMBLY INFORMATION TO DETERMINE THE START DATE (5/18/2018) AND THE END DATE (06/08/2018) OF THE AFFECTED VEHCILES." This vehicle was towed to a factory authorized dealership - all aspects of the malfunction mimicked the description in the recall. the Authorized dealer confirmed the sensor failure and proceeded to replace the defective crank sensor as per recall protocol. Authorized BMW Dealer and BMW Customer Service have refused 18V-465 Recall participation per, "After reviewing your request, the recall you referenced does not apply to your vehicle. Recalls are VIN-specific, and I can confirm there are no active recalls associated with your VIN at this time" Repair invoice was paid in full by vehicle owner for the crank Sensor Replacement. Considering that the issue at hand is a manufacturing failure depicted by a faulty firmware product (sounds like an intermittent or bad production circuit within the Crank Sensor computer chip), and with this vehicles in question produced just prior to the Factory implied recall production date -- might it be possible that the professed faulty firmware (ship) within the Crank sensor regulated in 18V-465 may have encountered some early production failures even previous the factory stipulated VIN date of 5/15/2028? Would it be advisable at this juncture for NHSTA to revisit 18V-465 to include and an all-defective Crank Sensors encountered that may be a causation for this safety recall? Thank you.

   NHTSA complaint 11711754
5. Filed Oct 19, 2025Failure Oct 13, 2025Benbrook, TXBlind spot detection, Warning, Unknown or other

   Recurring System Failures: My vehicle has exhibited intermittent and unpredictable system malfunctions, including engine stalling, braking issues, and electronic system failures. These pose serious safety risks and have made driving increasingly hazardous.continual tire pressure monitor reset light warning after reset 100 % measurement successful. rebalance all tires light reappear distant same spots

   NHTSA complaint 11694413
6. Filed Sep 10, 2025Failure Aug 15, 2023Kissimmee, FLAir bags, Seat 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 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 complaint 11686413
7. Filed Jul 2, 2025Failure Jun 12, 2025Fort Worth, TXElectrical system, Visibility/wiper

   Infotainment System interplay through audio voices coming from place of employment this have been unusual to audio system in various of my vehicles this over the air bugs are safety concerns as well as frequent unexpected wiper blade activation without touching for auto movement complex to electrical issues uncommon to vehicle routing infotainment system leading to unexpected interruptions sending false signals to vehicle electrical system causing many interruptions. highlighting the growing complexity and potential risks associated with vehicle software.implications, and solutions for these complex symptoms.

   NHTSA complaint 11670682
8. Filed Jun 25, 2025Failure Jun 20, 2025Mechanicsville, VAUnknown or other

   Sunroof exploded, glass shards everywhere. This has to be a manufacturer defect

   NHTSA complaint 11669337
9. Filed Mar 13, 2025Failure Mar 12, 2025Clearwater, FLAir bags, Seat belts, Seats

   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 complaint 11648020
10. Filed Feb 9, 2025Failure Nov 22, 2023Gaffney, SCSeat belts, SeatsCrash1 injured

    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.

    NHTSA complaint 11641549
11. Filed Jan 16, 2025Failure Sep 11, 2024Forest hills, NYPower train, Suspension, Wheels

    On September 11, 2024, I took my vehicle to BMW of Great Neck for a tire and rim job under insurance. BMW failed to return my lug nuts, leaving my vehicle in an unsafe condition. It took nearly a month for them to provide the missing lug nuts. Upon inspection, each wheel had fewer than the required 5 lug nuts, creating a serious safety risk. On September 24, 2024, I had to return to BMW due to a Tire Pressure Monitor (TPM) sensor issue, which should not have occurred after their September 11th service. Instead of addressing the issue, BMW dismissed it and suggested I get it fixed elsewhere. BMW’s own manager confirmed my vehicle was returned in this unsafe condition. If I hadn’t noticed, this could have resulted in wheel detachment, loss of control, or a crash. Additionally, after a routine oil change on December 27, 2024, BMW’s Multi-Point Inspection (provided January 12, 2024) revealed: •A missing stiffening plate, which supports chassis integrity. BMW stated this could cause chassis damage. •Coolant expansion tank & vent hose leaks, affecting vehicle cooling. •Fluid leaks, which could worsen over time. Contradiction in BMW’s Diagnostics & Evidence of Negligence: •The 1/12 Multi-Point Inspection contradicts the 12/27 diagnostic image I captured from service advisor Kevin Guo. •BMW failed to identify these issues on 12/27, despite servicing my vehicle that day. •This suggests either a misdiagnosis, negligence, or an attempt to cover up damages. Safety Concerns & Inspection Status: •The wheel issue put my safety at risk, and BMW has not taken accountability. •The stiffening plate issue affects vehicle stability, which could lead to handling problems or structural failure. •These issues were confirmed by BMW’s own inspection report on 1/12/25, contradicting the 12/27 diagnostic. BMW of Great Neck’s negligence directly compromised my vehicle’s safety. I request an investigation into their repair practices to prevent this from happening to others.

    NHTSA complaint 11636282
12. Filed Jan 6, 2025Failure Jan 6, 2025Jefferson, GAAir bags, Electrical 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 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 complaint 11634477
13. Filed Dec 20, 2024Failure Dec 6, 2024Lirhia Springs, GAEngine

    I contacted the dealership where I purchased my vehicle called Global Imports on December 6 because the car was running hot. I arrived on Saturday morning was informed that the radiator was leaking and a water pump was leaking that they both needed to be replaced and I would be charged around $3000 to replace it. There were no recalls the service bulletins that I mentioned they advised me were only repair notifications. They said there were no other notifications regarding the radiator only to have the check engine light come back on a week later I took it to a different dealership and I was advised that the 15 year warranty on the flaps which the flaps are not functioning properly. I was advised to take it back to Global Imports .

    NHTSA complaint 11631867
14. Filed Nov 27, 2024Failure Nov 5, 2024Westlake Village, CALatchCrash

    The car's hood sensor did not alert us to the fact that the hood was not properly closed. This resulted in the car's hood opening while being driven, causing the driver to lose sight of the road and crashed into a guardrail in a canyon road (see photo). The car is currently being evaluated by the insurance company for a total loss, and the car may be available for inspection currently, although it may also be taken apart by the auto collision company for their estimate evaluation. The failure of the hood latch mechanism to properly and conspicuously notify us prior to driving the car put us at severe risk of being in a life threatening accident as well as potentially imperiling the lives of other drivers or pedestrians. The vehicle was inspected by BMW after I reported the incident to them, and I have a written report from them. BMW concluded they are "technically confident that no manufacturing defects, faults or malfunctions were present in the vehicle that could have contributed to this incident." There were no warning messages of the problem prior to the hood opening. We also provided BMW with a video taken after the crash whereby the hood latch on the right side of the car was intentionally left open, and the hood latch on the left side of the car was closed, and demonstrated in this situation that there was no indication on the BMW i drive screen of any notifications to alert the driver of the hood not being completely closed. Despite asking numerous times for BMW to address the findings in that video, which we shared with them at their request, they never provided any response to the video. I would like to share the video with you but am unable to upload MP4 files onto your platform.

    NHTSA complaint 11627712
15. Filed Jun 1, 2024Failure Jun 1, 2024Atlantic Highlands, NJAir bags, Seat belts, Seats

    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 complaint 11591952
16. Filed May 2, 2024Failure May 1, 2023Roseville, CAAir bags, Seat 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 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 complaint 11586573
17. Filed Jan 13, 2024Failure Jan 13, 2024Round Rock, TXAir bags, Occupant classification

    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 complaint 11565256
18. Filed Dec 31, 2023Failure Dec 29, 2023LAS Vegas, NVTires

    245/35 R20 Dunlop Sport Maxx GT Found tires to be bulging out on sidewalls. Service center confirmed that both front tires were separating and are unsafe to drive on. Susceptible to blow outs. Rear tires have not been inspected as of yet.

    NHTSA complaint 11562788
19. Filed Sep 3, 2023Failure Aug 30, 2023North Richland Hills, TXAir bags, Seat belts, Seats

    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 complaint 11542421
20. Filed Apr 26, 2023Failure Mar 8, 2023Roanoke, VASeats

    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.

    NHTSA complaint 11519021