Emission control: crankcase (pcv)
Risk. An electrical short can cause the PCV valve heater to overheat, increasing the risk of a fire while driving or, soon after driving when parked.
NHTSA has logged 22 owner complaints about the 2009 BMW Z4, most often about the wheels. It is covered by 4 safety recalls, and for recall 22V-119 the manufacturer reports only 27% of affected cars repaired.

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through February 9, 2024. Updated daily. Photo: Vauxford, CC BY-SA 4.0.
22 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Wheels | 11 | 0 |
| Engine | 4 | 0 |
| Seat belts | 2 | 0 |
| Electrical system | 2 | 0 |
| Service brakes | 1 | 0 |
| Steering | 1 | 0 |
| Power train | 1 | 1 |
| Engine and engine cooling | 1 | 0 |
| Fuel/propulsion system | 1 | 0 |
| 1 other systems | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. An electrical short can cause the PCV valve heater to overheat, increasing the risk of a fire while driving or, soon after driving when parked.
Risk. An electrical short can cause the parts within the PCV valve to melt, increasing the risk of a fire, even when the vehicle is not in use.
Risk. If there is a loss of electrical power to the vehicle, the vehicle may unexpectedly stall, increasing the risk of a crash.
Risk. INCREASED ELECTRICAL RESISTANCE IN THAT CIRCUIT COULD CAUSE THE SAFETY BELT TENSIONER TO FAIL TO DEPLOY IN A CRASH, POSSIBLY RESULTING IN INCREASED INJURY TO…
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with BMW.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Z4 median. How we score
Recent wheels complaints filed with NHTSA, shortened. Personal details are removed.
REAR WHEELS ON BMW Z4 CRACKED DURING NORMAL ROAD USAGE. BOTH CRACKED WITHIN A MONTH OF EACH OTHER. THESE ARE 19" WHEELS WITH RUN FLAT TIRES AND 296 WHEEL DESIGN. THESE WHEELS DON'T SEEM TO BE DESIGNED FOR PUBLIC ROAD USAGE BUT ARE ADVERTISED AS SUCH. THEY CANNOT WITHSTAND EVEN MINOR ROAD…
WHEN I GOT INTO MY CAR ONE MORNING THE SENSOR WENT OFF LETTING ME KNOW THAT I HAD A LOW TIRE PRESSURE. I WENT AND FILLED THE TIRE TO THE PROPER LEVEL; I THOUGHT EVERYTHING WAS FINE, THEN THE NEXT FOLLOWING MORNING THE SAME THING HAPPENED. I TOOK THE CAR IN TO GET IT CHECKED OUT AND THEY FOUND THAT…
ALUMINUM WHEEL (STYLE 296) CRACK ON THE INSIDE BEAD. CAR HAS 22,000 MILES ON 1/23/14 AND 3 WHEELS CURRENTLY HAVE CRACKS. THE CRACKS PREVENT THE TIRES FROM MAINTAINING AIR PRESSURE AND LOWERS THE STRUCTURAL INTEGRITY OF THE RIM, CAUSING A SAFETY HAZARD. BMW IS ONLY OFFERING TO REPAIR ONE WHEEL UNDER…
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.