The roof light of the car can not be turned off, which may be turned on the long light mode. Generally, there will be buttons ON the edge of the lights at the top of the cab, and there are three ways on the buttons, respectively, the way of long lighting, the way of opening and closing the DOOR, and the way of turning OFF the door. The expanded information about the interior of the car is as follows: 1. Introduction: The interior of the car mainly refers to the automotive products used in the internal modification of the car, involving all aspects of the interior of the car, such as the steering wheel cover, the car seat cushion, the car foot mat, the car perfume, the car pendant, the interior decoration, the storage box and so on are all automotive interior products. 2, content: Automotive interior mainly includes the following subsystems: Instrument panel system, sub-instrument panel system, door interior shield system, ceiling system, seat system, column shield system, other cab mounting system, cab air circulation system, luggage mounting system, engine compartment mounting system, carpet, seat belt, airbag, steering wheel, interior lighting, interior acoustic system, etc.