| 1 | 0 | 3 | 4 | 3 | 4 |
2003 BMW Z4 repairs by problem area
Engine (36%)
Transmission and Drivetrain (3%)
Brakes and Traction Control (4%)
Suspension and Steering (11%)
Electrical and Air Conditioning (23%)
Paint, Rust, Leaks, Rattles, and Trim (17%)
Other (6%)
Select a problem area
- Engine
- Transmission and Drivetrain
- Brakes and Traction Control
- Suspension and Steering
- Electrical and Air Conditioning
- Paint, Rust, Leaks, Rattles, and Trim
- Other
Chart based on 204 repairs.
2003 BMW Z4 electrical repair cost distribution
$2500+ (0%)
$1000 - $2499 (12%)
$500 - $999 (12%)
$100 - $499 (38%)
< $100 (38%)
Chart based on 42 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2003 BMW Z4
Engine not specified
| 27000 mi US $1534 |
Convertible top motor went out. |
2003 BMW Z4 2dr Convertible
225-horsepower 3.0L I6 6-speed manual RWD
| 84000 mi US $40 |
Tighten battery cables |
| 68000 mi US $150 |
replaced starter |
| 104000 mi US $270 |
Original alternator died at 104,000. Replaced with remanufactured alternator, replacement was easy DIY. |
| 122700 mi US $200 |
Starter went out, replaced with a new unit |
| 135000 mi | Passenger side window stopped going up when temperatures dropped. Cleaned window regulator, traced problem to bad relay on GM5 module. Followed online instructions to clean relay, works fine now. |
| 59600 mi US $104 |
Navigation system would not extend up. Bolt broke. New unit required. |
| 62200 mi US $580 |
Starter died. Had to replace |
| 66000 mi US $600 |
Re nav broke. Found new unit out of California for 500. Ordered and had installed locally. |
| 58000 mi | Speedometer and all related functions stopped working. Warning lights for DSC, ABS, Brake, and TPMS. |
| 44000 mi £1220 |
Electric Hood motor |
| 46000 mi £350 |
Driver Side Window Regulator |
2003 BMW Z4 2dr Convertible
225-horsepower 3.0L I6 6-speed automated manual RWD
| 24000 mi US $800 |
Airbag light is on. Had to spend 135 to diagnose the problem and they told me it was a loose wire. The fixed it & still had the same problem. car ws in shop for 6 days and no loaned car while they tried to determine problem was a faulty mat |
2003 BMW Z4 2dr Convertible
225-horsepower 3.0L I6 5-speed shiftable automatic RWD
| 41000 mi | Chronic right front turn signal failure |
| 42000 mi | Replaced right front turn signal socket. Now the headlight continually fills with condensation |
| 30800 mi | Replace Instrument Carrier. Replace passenger window regulator. |
| 33000 mi US $92 |
Replaced battery. |
| 34800 mi | Replaced driver side window regulator. |
| 36000 mi US $327 |
Replaced headlights due to fogging. |
| 40000 mi US $83 |
Replace CHMSL. The center brake lights crack on these cars. |
| 43000 mi US $132 |
Replaced starter motor. |
| 47000 mi US $1500 |
A/C compressor failure. I purchased the parts but have yet to have them installed. New compressor, condenser, drier, expansion, valve, and belt tensioner. $900.00 for parts, all new not remanufactured. Expecting labor to be $600.00. |
| 53000 mi US $175 |
Replaced the Battery. It was 2 months shy of 5 years old and would not take a charge. |
| 49000 mi US $617 |
Passenger door latch no longer sensed door was closed. Door would not lock and window stayed down as if door were open. Entire latch assembly had to be replaced. |
2003 BMW Z4 2dr Convertible
184-horsepower 2.5L I6 6-speed automated manual RWD
| 86000 mi US $1200 |
climate control module replaced |
2003 BMW Z4 2dr Convertible
184-horsepower 2.5L I6 5-speed shiftable automatic RWD
| 81000 mi US $180 |
Window regulator replacement |
| 77000 mi US $16 |
repaired wires chewed up |
| 81000 mi US $170 |
replaced |
2003 BMW Z4 2dr Convertible
184-horsepower 2.5L I6 5-speed manual RWD
| 4000 mi | Instrument cluster fault, replaced - covered by warranty. |
| 57000 mi US $900 |
Replace Air Conditioner Compressor |
| 88000 mi US $90 |
Head light front auto leveling sensor link broke off. R&R sensor and adjusted head light |
| 71300 mi US $1000 |
HVAC control panel was replaced Seat sensor not working causing airbag light |
| 105300 mi US $247 |
Bad starter motor |
| 110000 mi US $100 |
Passenger door won't unlock with remote. Replaced door latch. Still does work correctly. Will need to replace GM5 module. Had GM5 Module repaired to fix passenger door not opening. $100 plus $9 shipping to have it repaired. |
| 27000 mi US $607 |
Airbag warning light came on. Took to 2 independent repair shops but they could not repair as their computer would not allow reflash. Took to dealer who installed airbag sensor, reflashed computer and problem solved for over $600. |
| 52000 mi US $140 |
Air bag light came on. Problem was fault triggered by mat in passenger's seat. |
| 56000 mi US $70 |
SRS light was on, caused by fault in passenger's seat sensor mat. Installed bypass so car thinks passenger's seat is always occupied. Then had light reset by a shop. |
| 41000 mi US $250 |
AC stopped blowing cold. |
| 78000 mi US $469 |
Starter totally failed and was replaced. |
| 79000 mi | Rain sensing wipers had never worked since I bought car @ 23000mi. Sensor had separated from glass, only way to fix was new windshield & I didn't. Recently my windshield got large crack and insurance replaced, which also fixed rain sensor! |
| 73160 mi | problem with power door locks |
| 79360 mi C $475 |
Bought 2 new actuators after getting completely locked out(thankfully top was down). Both worked perfectly for a week, but drivers door is again not working. Next step either wire in a new relay system or replace the relays on the GM5 module. |
| 68480 mi C $30 |
Managed to fix the GM5 unit by desoldering and replacing the relays on the circuit board. Not a difficult job, but spend some time on Youtube learning how to desolder components if anyone else tries this. |
| 102300 mi | Frozen battery. Removed battery, let it thaw out in shop and slowly recharged it. Installed battery switch to easily disconnect battery for storage. |
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