Table 1 shows four common electrical system related problems of the 2003 BMW 3 Series. The number one most common problem is related to the electrical system (nine problems). The second most common problem is related to the wiring (one problem).
| Problem Category | Number of Problems |
|---|---|
| Electrical System problems | |
| Wiring problems | |
| Alternator/generator/regulator problems | |
| Battery Dead problems |
Transmission will drop out of gear and shut car down, while vehicle in motion during normal use. Vehicle will only work when cold, manufacturer is aware of badly designed smg temp sensor and negligently designed computer logic that shifts transmission to neutral and shuts car down. Read details...
Formal petition for safety defect investigation, after replacing the tail light bulbs in on the passenger and driver's side they continued to burn out, after taking the bulb housing cover off, I noticed a burning smell and the brown wire in the unit had melted the entire connection. Read details...
In 2010 the sunroof went bad I talked to a BMW dealer and they told me they have problems with them, in August of 2011 I noticed that my tail lights and blinkers were not working proper,nor was my horn,and the drivers window regulators are binding up, also a brake hose from my brake booster to the Read details...