Fault inspection vehicle outer bulb burned out is a simple thing. However, the vehicle lighting system on a comprehensive maintenance is not so simple.

Timely maintenance of the vehicle lighting is essential to the driver, because it affects not only driving comfort, but also directly related to traffic safety. Before usually get a reminder, the owner is difficult to realize that headlights, taillights, turn lights or parking lights can no longer work properly. By the way, replace burned out bulbs work is very simple, its cost is lower than the DIY repair station to charge standard lighting system maintenance.

More often, the fault must not be limited lights burned out light bulb, socket or plug rust damage this kind of small issues that often require specialized diagnostic techniques to analyze the root cause of failure. Even those low-cost car, its interior and exterior lighting is controlled by a host computer; and those luxury cars, their headlights on only controlled by three computers.

If the car is equipped with daytime running lights system you must first understand the working principle of these devices. If the vehicle is equipped with a light control lamp (i.e., when the external light is dark to a certain extent, the system comprising headlights automatic opening function), may wish to check the operation of the photosensitive weakest to strongest state during lamp, of course, Do not ignore the check automatically turn off the timer. If the system is equipped with a timer, set it to maximum delay.

If the headlight is damaged, generally similar lamp replacement. Some cars are equipped with high-intensity discharge headlamps HID, high voltage arc generated by the apparatus through the electronic system as designed to generate a high-density discharge source. Note that, Common quartz - halogen bulbs can not be applied here. Also, the headlight lens before checking for cracks, because although surface crack does not affect the performance of lighting of the headlamps, but the moisture can penetrate the luminaire along the crack, which is bound to reduced lamp life.

In addition, the alignment direction of the headlights before lighting should also be included in the maintenance checklists. To seize the key, but also an examination must not forget other light system, such as turn signals, license plate light, showing the wide lights, parking lights, reversing lights and brake lights (including middle brake light CHMSL) and so on. In addition, many vehicles will be equipped with fog lights as standard or optional parts epidemic, fog lights usually installed in a lower position on the car, so vulnerable to damage stones, while its maintenance, in addition to checking the lighting system itself, the crack lamp lenses should not be overlooked.