Checking the light bulb outside the lamp is a very quick and easy job. However, the comprehensive and systematic maintenance of the exterior lighting is not so simple. Timely maintenance of exterior lighting is crucial to drivers because it not only affects the comfort of driving, but also directly relates to the safety of driving. It is often difficult for owners to realize that headlights, taillights, turn signals, or parking lights are no longer working properly before being alerted. By the way, the replacement of burned-out bulbs is very simple, and the cost of DIY is lower than the maintenance fees for maintenance of the lighting system at the maintenance station.
In more cases, the failure of the vehicle light is not limited to such minor problems as bulb burnout, socket corrosion, or plug damage. It often requires specialized diagnostic techniques to analyze the root cause of the fault. Even for low-priced cars, the internal and external lights are controlled by the host computer. For those luxury cars, only their headlights are controlled by three computers.
If your car is equipped with Daylight Runner GLamps, you must first understand how these devices work. For example, some daytime running lights cannot be turned on before the engine starts; some daytime running lights, if the parking brake has not been cancelled, even if the engine has been started, the daytime running light will still not work. If the vehicle is equipped with a light control light (that is, when the outside light is dimmed to a certain degree, the system has the function of automatically turning on the headlights), check the work of the lights from the weakest to the strongest in the photo, of course. Also do not ignore the check auto-off timer. If the system is equipped with a timer, set it to the maximum delay.
If the headlamps are damaged, they are usually replaced with similar ones. Some cars are equipped with high-intensity-discharge headlamp HIDs, which generate high-density light sources through high-voltage arc discharges generated by their pre-designed electronic systems. Note that ordinary quartz-halogen light bulbs cannot be used here. In addition, check the front headlight lens for cracks, because although the surface cracks will not affect the lighting performance of the headlamps, moisture will penetrate the lamps along the cracks, which will inevitably reduce the life of the lamp.
The calibration of the direction of the headlights should also be included in the list of maintenance items because in order to ensure maximum driver safety, the headlights must be able to provide good forward lighting for the vehicle.
In addition to grasping the key, we must not forget to inspect other lamp systems, 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 lamps as standard equipment or popular options. Fog lights are generally installed at lower positions on the vehicle and are therefore vulnerable to damage caused by stones. In addition to checking the lighting system during maintenance Outside of itself, the cracks in the lens of the lamp should also not be ignored.