【The owner's family car knowledge】It is a simple matter to check the bulbs outside the car for burnout failures. However, it is not so simple to perform a comprehensive system maintenance on the exterior lamps.
Timely maintenance of exterior lights is very important to the driver, because it not only affects the comfort of driving, but also directly affects the safety of driving. It is often difficult for car owners to realize that the headlights, taillights, turn signals or parking lights are not working properly before being reminded. By the way, the job of replacing a burnt out bulb is very simple, and the cost of DIY is lower than the charging standard for maintenance of the lighting system at the repair station.
In more cases, the failure of car lights is by no means limited to small problems such as bulb burnout, socket rust or plug damage. It is often necessary to adopt professional diagnostic techniques to analyze the root cause of the failure. Even those low-priced cars, their internal and external lamps are controlled by the main computer; and those luxury cars, only the headlights are controlled by three computers.
If the car is equipped with daytime running lights, you must first understand the working principles of these devices. If the vehicle is equipped with light-controlled lights (that is, when the external light is dim to a certain extent, the system has the function of automatically turning on the headlights), you may wish to check the working conditions of the lights during the process from the weakest to the strongest sensitivity. Of course Don't neglect to check the automatic shutdown timer. If the system is equipped with a timer, set it to the maximum delay.
If the headlights are damaged, they are usually replaced with similar lamps. Some cars are equipped with high-intensity discharge headlights HID, which generates high-density light sources through high-voltage arc discharge generated by its pre-designed electronic system. Note that ordinary quartz-halogen bulbs cannot be used here. In addition, check the headlight lens for cracks, because although surface cracks will not affect the lighting performance of the headlights, moisture will penetrate into the lamps along the cracks, which will inevitably reduce the service life of the bulb.
In addition, the calibration of the headlight direction should also be included in the list of maintenance items. While grasping the key, you must not forget to inspect other lights, such as turn signals, license plate lights, width lights, parking lights, reversing lights, and brake lights (including the middle high brake light CHMSL). In addition, many vehicles also use fog lights as standard equipment or popular options. Fog lights are generally installed in a lower position on the car, so they are easily damaged by stones. When maintaining them, in addition to checking the lighting system In addition to itself, the cracks in the headlight lens should not be ignored.
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