- The parking light switch is faulty: The parking light switch controls the flow of electricity to the parking lights. If the switch is faulty, it may not turn off the parking lights when you turn off the ignition.
- The parking light relay is faulty: The parking light relay is an electrical component that controls the operation of the parking lights. If the relay is faulty, it may not turn off the parking lights when you turn off the ignition.
- A short in the wiring harness: A short in the wiring harness can cause power to flow to the parking lights even when the ignition is off.
- The daytime running lights (DRL) module is faulty: Some Subaru models are equipped with DRLs, which are lights that automatically turn on when the engine is running. If the DRL module is faulty, it may not turn off the parking lights when you turn off the engine.
Here are some troubleshooting steps you can try to resolve the issue:
- Make sure that the parking light switch is in the "off" position.
- Check the parking light relay for damage or corrosion. Replace the relay if necessary.
- Inspect the wiring harness for any shorts. Repair any shorts that you find.
- If your vehicle has DRLs, check the DRL module for damage or corrosion. Replace the module if necessary.
If you are unable to resolve the issue yourself, you may need to take your vehicle to a qualified mechanic for further diagnosis and repair.