It is an extremely quick and simple task to check the failure of the light bulb of the external lamps and lanterns, but it is not so simple to maintain a comprehensive and systematic maintenance of the external lamps. Timely maintenance of lamps outside the vehicle is very important for drivers, because this not only affects the comfort of driving, but also directly relates to the safety of driving. Usually before being reminded, it is hard for owners to realize that headlights, taillights, turn signals or parking lights are no longer working properly. By the way, replacing the burned bulb is very simple. The cost of DIY is lower than that of the station for lighting system maintenance.