2012 BMW 1 Series problems

“PASSENGER SEAT OCCUPANCY SENSOR IS HAVING ERRORS. SHOWING A PASSENGER WHEN NONE IS PRESENT AND ALSO SHOWING NO PASSENGER WHEN THERE IS ONE IN THE SEAT. THIS IS A PRETTY MAJOR SAFETY ISSUE.”

“Prior to August 2024, this vehicle operated with zero check engine lights or drivetrain faults. In August 2024, BMW of Pittsburgh executed federally mandated Safety Recall 23V-707, which required opening the cylinder head. Immediately following this service, the Check Engine Light began illuminating persistently.On or about October 3, 2024, an independent diagnostic scan at Bobby Rahal BMW pulled BMW Factory Code 002A89: Exhaust VANOS Camshaft Mechanism Fault (Mechanical Sticking/Flow Restriction). Technicians at Bobby Rahal BMW explicitly instructed me to return the car to BMW of Pittsburgh because they suspected the original VANOS safety recall repair was botched.On October 28, 2024, I returned the vehicle to BMW of Pittsburgh to address this issue. Their technicians opened the engine block assembly a second time, yet failed to correct the defect. Following this second visit, the check engine light continued to come on intermittently. The vehicle began suffering rough idling, difficulty starting, and dangerous stalling events during operation. Cycling the ignition on and off provided only temporary relief.The check engine light has now become permanently…”

“On February 25, 2026, BMW of South Miami performed the VANOS safety recall repair on my vehicle. The repair order documented that VANOS bolts were missing and retrieved from the engine oil pan and that VANOS components were serviced. Within approximately 24–48 hours of picking up the vehicle, the check engine light illuminated and the vehicle began operating abnormally, including rough idle and irregular shifting. The vehicle stored diagnostic fault code P054B (camshaft position timing over-retarded), which directly relates to camshaft timing and the VANOS system involved in the recall repair. I returned the vehicle to the dealership for further diagnosis. The dealership stated an aftermarket camshaft position sensor with two O-rings was installed and removed one O-ring to correct the gap between the sensor and the camshaft reluctor wheel. The faults were cleared and the vehicle was returned to me. However, the check engine light returned again the following morning upon cold start, indicating the issue was not corrected. My service advisor has since stated that replacing the camshaft position sensor is not part of the recall repair and the dealership has…”

“VEHICLE EXHIBITS AN INTERMITTENT HESITATION (LIKE A STALL) WHERE THERE IS AN APPARENT TOTAL LOSS OF POWER AT LOW SPEEDS (COASTING) OR FROM STOPPED. ON SEVERAL INSTANCES THIS HAS HAPPENED WHILE IN A LEFT TURN LANE WITH ONCOMING TRAFFIC AND CREATES A SERIOUS SAFETY HAZARD. THE VEHICLE MORE FREQUENTLY, BUT NOT ALWAYS SURGES IN RMP WITHOUT THROTTLE INPUT WHEN COMING TO A STOP. IN MANY INSTANCES, THE VEHICLE LURCHES FORWARD AND EXTRA BRAKING IS REQUIRED. THIS HAS RESULTED IN NEAR MISS, REAR END, ASSURED CLEAR DISTANCE ISSUES. THESE TWO PROBLEMS OCCUR DURING CITY/RESIDENTIAL DRIVING INCLUDING AT SLOW SPEEDS THROUGH SCHOOL ZONES (A MAJOR CONCERN). I PURCHASED THIS CAR USED, BUT WITH LOW MILEAGE AND ENCOUNTERED THESE ISSUES ON THE DAY OF DELIVERY. DEALER REPROGRAMMED AN ENGINE CONTROL MODULE ACCORDING TO A BMW SAFETY BULLETIN WHICH I FOUND ONLINE. THE DRIVE HOME WAS NOTICEABLY IMPROVED, HOWEVER THE CONDITIONS RETURNED SHORTLY THERE AFTER AND PERSIST TO THIS DAY.”

“TL* THE CONTACT OWNS A 2012 BMW 135I. THE CONTACT STATED THAT WHILE THEIR WIFE WAS DRIVING AT APPROXIMATELY 45 MPH, THE VEHICLE STALLED WHILE THE POWER STEERING CEASED WITH AN UNKNOWN WARNING LIGHT ILLUMINATED. THE CONTACT CONTACTED A CERTIFIED MECHANIC WHO INFORMED THE CONTACT THAT THE FAILURE WAS RELATED TO NHTSA CAMPAIGN NUMBER: 13V044000 (ELECTRICAL SYSTEM) HOWEVER, THE VIN WAS NOT INCLUDED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND A CASE WAS FILED. THE APPROXIMATE FAILURE MILEAGE WAS 50,000. *LN *TR”

“The contact owns a 2012 BMW 128I. The contact received notification of NHTSA Campaign Number: 23V707000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.”