- Turn off the ignition and disconnect the negative battery terminal.
- Perform maintenance of the gas discharge lamp in a dry place.
- Dry your hands thoroughly before working.
Since the terminal of the gas discharge lamp is under voltage of about 25,000 V, touching it with your fingers or the tester probes may cause electric shock. When turning on the gas discharge lamp, do not touch its terminal with your fingers or the tester probes.
If the gas discharge lamp is turned on before the front combination lamp is fully assembled, it may cause electric shock. Before turning on the gas discharge lamp, the front combination lamp must be fully assembled and installed on the vehicle.
If you use a tester to check the operation of the gas discharge lamp control unit, you may get an electric shock. Do not disassemble the gas discharge lamp control unit.
A gas discharge lamp control unit damaged in an accident may supply high voltage to surrounding modules and cause electric shock. Therefore, even if the gas discharge headlamps show no external signs of damage after an accident and continue to function normally, a malfunction may occur later due to internal damage to the gas discharge lamp control unit. If the gas discharge lamp control unit is reused, perform the following checks to ensure that there are no malfunctions:
- Check the gas discharge lamp several times to ensure it is switched on when cold (turn off the gas discharge lamp for about 10 minutes or more, and then turn it on again) and in a warm state (turn on the gas discharge lamp for about 15 minutes or longer, turn it off for about 1 minute, and then turn it on again), to make sure that the gas discharge lamp turns on normally.
- Make sure that the gas discharge lamp shines evenly for about 5 minutes after switching on in a cold state. The light of the gas discharge lamp should not flicker or change brightness.
- After connecting a known good lamp to the gas discharge lamp control unit, turn it on for about 30 minutes and make sure that the brightness of the right and left headlights of the car is the same.