What does 'door' mean on a car?

1 Answers
ArthurAnn
07/29/25 5:25pm
The 'door' indicator is usually found on the reading light and represents the activation mode of the reading light. 'Door' means that the dome light will illuminate when the car door is opened. If the door is opened or not closed properly, the light will also turn on, serving as a warning. Usage method: The interior reading light generally has three position switches: off, on, and door. When the reading light control switch is in the 'door' position, the light will turn on if the car door is opened. After the driver exits the vehicle and removes the key, the reading light will stay illuminated for 15 seconds before turning off. When the mechanical key is not inserted into the ignition switch, turning the ignition switch to the 'LOCK' position will also activate the light. When the driver-side door is locked or the ignition switch is turned to the 'ON' position, the reading light will illuminate regardless of the state. If the reading light switch is in the 'OFF' position, the light will not turn on no matter the vehicle's state. Advantages: The interior reading light may also use LED bulbs, which have a long lifespan, typically reaching tens of thousands or even hundreds of thousands of hours. They also perform well in terms of energy efficiency, consuming at least half the power of incandescent bulbs of the same brightness. LED bulbs provide high-quality light with minimal radiation, making them a 'green' light source. They do not require a warm-up time and have a fast response when turning on.
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