Problems for specific Volkswagen Jetta years:
Car problem reports
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Repairpal verified 2003 Volkswagen Jetta problems
One or both head lights may not work due to premature head light bulb burnout and/or bulb harness failure. Care should be taken to inspect the head light harness connector for damage when replacing bulbs. Damaged connectors should be replaced.
Electrical issues that are difficult to diagnose—and sometimes intermittent—are typically due to ground wiring issues. The most troublesome ground locations are under the battery or at the engine.
Condensation in the heater case may cause a musty odor from the heating, ventilation and AC (HVAC) system after sitting for two hours or more. Our technicians tell us that a cleaner is available for the heater case and the drain system should be checked for debris.
Throttle body failure is not uncommon and can lead to shifting issues with the automatic transmission and other drivability concerns.
Reverse gear failures and noise in the manual transmission models are common.
The rear brakes tend to wear out quickly; rotors may need replacement by the first brake job. Our technicians recommend that the brakes be inspected for wear regularly.
Erratic turn signal operation can be a result of a failing turn signal flasher relay which will require replacement.