It is an extremely quick and easy task to check the failure of the led lamp lamp lamp bulb. However, it is not so easy to carry out comprehensive and systematic maintenance of the lamp outside the car. It is very important for the driver to maintain the lamp outside the car timely, because it not only affects the comfort of the car, but also directly relates to the safety of the car. Usually, it is difficult for the owner to realize that the headlights, taillights, steering lights or parking lights are not working properly before being reminded. By the way, the job of replacing a burned bulb is simple, and the cost of DIY is lower than the cost of maintaining the lighting system at a maintenance station.
More cases, lamp fault is not confined to the light bulb burn out, rust or plug socket damage this kind of small problem, often need to take professional diagnostic technique to analyze the root cause of failure. Even for low-priced cars, the internal and external lighting is controlled by the main computer. The luxury cars, the headlights alone, are controlled by three computers.
If a car is equipped with a DRL, you must first understand how these devices work. For example, some day lights cannot be turned on before the engine starts. There are also some day lights, if the parking brake has not been cancelled, even if the engine has started, its day lights can not work normally. If the vehicle is equipped with electric lights (that is, when the outside light to a certain extent, the system has the function of automatic open headlights), might as well check the photosensitive from weakest to strongest status lights work, in the process of automatic shutdown timer, of course, also don't ignore inspection. If the system is equipped with a timer, set it to the maximum delay.
If the headlamp is damaged, a similar lamp is usually used for replacement. Some cars are equipped with high intensity discharge headlamps (HID), which generate high density light from high-voltage arc discharge generated by their pre-designed electronic systems. Note that ordinary quartz - halogen bulbs cannot be used here. In addition, also check whether headlamps have crack, because although surface crack does not affect the headlamps lighting performance, but the moisture will be along the crack into the lamps and lanterns, it will reduce the service life of the bulb.
Headlamps lighting direction of calibration should also be included in the list maintenance projects, because to ensure the safety of the driver is driving the biggest headlights must be able to provide good forward lighting vehicle.
In addition to grasping the key, do not forget to check other light systems, such as turn signal, license plate light, width indicator light, parking light, reversing light and brake light (including CHMSL). In addition, many cars will also be fog lamps or popular option as standard equipment, fog lamps generally installed on the car a lower position, so the stones are highly susceptible to damage, and in the maintenance, in addition to check lighting system itself, the lights of the crack should not be ignored.
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