If your 2010 Crown Victoria has functioning headlights, brake lights, and turn signals but no tail lights, the issue could be with the tail light circuit or with a specific component in the tail light assembly.
Here are a few things you can try to troubleshoot the issue:
- Check the tail light fuses. Make sure that the tail light fuses are not blown. Check the vehicle's owner manual for the location of the fuses.
- Check the tail light bulbs. Make sure that the tail light bulbs are working properly, if not replace them.
- Check the wiring. Make sure that the wiring for the tail lights is connected properly and that there are no frayed wires or broken connections.
- Check the brake light switch. The brake light switch is responsible for turning on the brake lights when the brake pedal is depressed. Make sure the brake light switch is working properly.
- Check the turn signal switch. Make sure the turn signal switch is working properly, and properly wired to the tail lights.
If the problem persist after trying the above solutions, It would be best to consult a professional mechanic or an auto electrical technician to diagnose the issue, as it could be a malfunction in one of the electronic module that control the lighting. It's a good idea to take the vehicle to a dealership or repair shop that specializes in Ford vehicles. They will have access to the wiring diagrams and repair information needed to correctly diagnose and repair the issue with the tail lights.
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