1. Fuse: Check the fuse for the turn signals, hazard lights, and brake lights. If the fuse is blown, replace it with a new one of the same amperage.
2. Bulbs: Check all the bulbs for the turn signals, hazard lights, and brake lights. If any of the bulbs are burned out, replace them with new ones.
3. Wiring: Check the wiring for the turn signals, hazard lights, and brake lights. Make sure that the wires are not damaged or disconnected. If any of the wires are damaged, repair or replace them as necessary.
4. Turn Signal Switch: The turn signal switch may be faulty. If the turn signal switch is not working properly, it will not send power to the turn signals, hazard lights, or brake lights.
5. Multifunction Switch: The multifunction switch, also known as the turn signal stalk, may be faulty. If the multifunction switch is not working properly, it will not send power to the turn signals, hazard lights, or brake lights.
6. BCM (Body Control Module) The BCM is responsible for controlling the turn signals, hazard lights, and brake lights. If the BCM is faulty, it will not send power to the turn signals, hazard lights, or brake lights.
To troubleshoot this issue, follow these steps:
1. Check the fuses.
2. Check the light bulbs.
3. Check the wiring.
4. Check the turn signal switch and hazard light switch.
5. Check the multifunction switch.
6. Check the BCM.
If you are not comfortable performing these tasks, you should take your vehicle to a qualified mechanic for diagnosis and repair.
