1. Normal wear and tear causing light bulb filament broken.
2. Controller not stable causing high current burnt the bulb.
3. Socket corroded internally, causing wiring short circuit which lead to bulb filament broken.
Suggest to repair at workshop during daytime when the environment light is good.
1. Check if there is any fault indicator in the meter cluster.
2. Take out the faulty headlamp bulb to check if it is broken.
3. Use the multimeter to check the wiring, replace the aged wire or restore the faulty connector.
4. Use scan tool to clear the fault code after repairing done.