- Bad brake light switch
- Blown fuse
- Faulty wiring
- Bad brake light bulbs
Steps to Diagnose and Fix the Issue:
1. Check the brake light bulbs: Ensure that all the brake light bulbs are in good condition and not burned out.
2. Check the brake light switch: Use a multimeter to see if the switch is working correctly. If faulty, replace the brake light switch.
3. Check the fuse: Some vehicles have fuses that specifically control brake lights. Check to see if the brake light fuse is blown and replace if needed.
4. Check the wiring: Inspect the wiring harness that connects to the brake light switch and the brake lights to ensure there are no loose or damaged wires.