2020 BMW X3 Driver assistance Problems

Heat Management Module HMM is bad. BMW used a plastic part that is right up against the engine block. This HMM Heat Management Module resulted in STOPPING the vehicle completely in the middle of the freeway. I had no control. Then the car drove, then stopped again. I had NO CONTROL over the vehicle. Weeks later the Drivetrain Malfunction warning light appeared as i was driving home late at night from the ER. I took it to my BMW dealer. The diagnostic test was performed and was told the Heat Management Module HMM needed to be replaced at a cost to me of $3000. I contacted BMW USA, explained what transpired and they responded with a denial. I stopped driving the car completely after i found other complaints about BMW using an inferior part on the 3 series and the same issue about the car stopping in highway traffic without any control. I later got my BMW repaired, at the BMW dealer, as i could not afford to buy another car. I have the defective inferior part in my possession for inspection by NHTSA. BMW refuses to recall the Heat Management Module HMM and will not address the Drivetrain Malfunction warning light. I would like this to be escalated and investigated by NHTSA.gov so that others may be safe when driving please. Thank you.

NHTSA ID

11749367

Incident

May 15, 2026

Due to a TSB (SIB 65 12 22) wherein the roof antennae leaks water and causes a short in the telemetry module, the car does not have pedestrian warning, navigation or backup camera / cross traffic warning. The car is drivable, but compromised from a safety perspective.

NHTSA ID

11729946

Incident

Mar 15, 2026

The car suddenly braked without warning, and the road was clear and no interference.

NHTSA ID

11669865

Incident

Jun 27, 2025

The contact owns a 2020 BMW X3. The contact stated that while reversing, the back over prevention camera displayed a black screen. The contact became aware of NHTSA Campaign Number: 21V096000 (Back Over Prevention). The vehicle was taken to the dealer however, the vehicle was not diagnosed. The dealer confirmed that the VIN was not included in the recall. The vehicle was not repaired. The manufacturer was informed of the failure and confirmed the VIN was not included in the recall. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 21,000.

NHTSA ID

11663735

Incident

May 8, 2025

Mileage

21,000 mi

The accident happened at Noon on [XXX] at the Amazon Fresh/Post office parking lot’s far right exit lane facing [XXX] The address is [XXX] . We were leaving the parking lot and I stopped at the exit lane with 2 cars in front of us. After the first car exited, the second car, a black Ford Explorer, moved forward. I released the brake slightly but my foot was still on the brake pedal. At this moment, my car suddenly accelerated and quickly approached the Explorer. I immediately pressed the brake pedal hard but was unable to stop my car and hit the back of the Explorer. The Explorer was forced out in front of the stop sign but the driver was able to turn right to park at the roadside. With my foot still firmly on the brake pedal, my car kept on accelerating into [XXX] , crossing 5 lanes of traffic until we hit the roadside curb of westbound [XXX] . The car then swerved left and hit a roadside tree, turning sideways into [XXX] middle turn lane. During this entire time, I did not press the accelerator and the car was violently shaking and jerking right and left. As the car slowed down, I was able to steer the car to the right eastbound lane of [XXX] , next to the parking lot near Bank of America’s ATM sign. After I got out of the car, I noticed the front and right sides of the body and tires were damaged including crushing, dents, and significant scratching. The problem I believe is as follows: 1.Sudden Unintended Acceleration and Control Circuit Malfunction. 2.Airbags did not deploy even though we hit a car, curb and tree. 3.Onboard Data Recorder should have the information needed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11619886

Incident

Oct 3, 2024

This car does not have an accurate speedometer. The analog dial only marks the MPH number every 20 miles (eg numbers shown for 20 / 40 / 60. But not for 10 / 30 / 50). So impossible to easily or safely see the speed you are going. There is no digital speedometer showing the MPH number.

NHTSA ID

11512787

Incident

Mar 20, 2023

The contact owns a 2020 BMW X3. The contact stated that at night or during inclement weather while shifted in reverse, the rear-view camera displayed a distorted screen. No warning light was illuminated. The vehicle was taken to the dealer however, the vehicle was not diagnosed or repaired. The contact referenced NHTSA Campaign Number: 19V684000 (Back Over Prevention) as a possible fix for the failure. The manufacturer was notified of the failure and the contact was informed that the VIN was not included in a recall. The failure mileage was approximately 50,000.

NHTSA ID

11505889

Incident

Jan 6, 2023

Mileage

50,000 mi

AEB TRIGGERS WITH NO CAR IN FRONT OF ME. DEALER SERVICE REP TELLS ME HER X5 DOES IT TOO, THAT THE SENSOR IS MOUNTED TOO LOW AND A POTHOLE CAN SET IT OFF. ADVISED TO SET TO "LATE." DID IT AGAIN. WAS RAINING LAST TIME AND CAR WENT INTO MINOR SKID. (DRIVER BEHIND ME WASN'T AMUSED). HAS HAPPENED TWICE.

NHTSA ID

11403959

Incident

Mar 15, 2021

Mileage

5,800 mi