BMW Z3 owners have reported 2 problems related to alternator/generator/regulator (under the electrical system category). The most recently reported issues are listed below.
The vehicle shut off, the dealer replaced the battery and alternator.
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All interior and exterior lights dim in brightness unexpectedly when air conditioning system cycles. Dealership has examined vehicle and informed consumer this it is an inherent problem with vehicle, and there is nothing that can be done to remedy the problem, on last visit dealer replaced alternator, consumer and dealer working out trade-in deal. Consumer states while driving, engine idle starts going up and down, and vehicle also loses power when the a/c is on, dealer stated this is normal reaction of the voltage regulator to the sudded increase in electrical load. Right side seat switch is loose and gets stuck, dealer replaced seat switch. Consumer hears a squeaking/popping noise at rear of drivers door or convertible top near drivers shoulder area.
| Problem Category | Number of Problems |
|---|---|
| Electrical System problems | |
| Wiring problems | |
| Ignition Switch problems | |
| Alternator/generator/regulator problems | |
| Fuses And Circuit Breaker problems | |
| Underhood Wiring problems | |
| Ignition problems | |
| Car Will Not Start problems | |
| Dash Wiring problems | |
| Battery problems |