If you’re ever driving in the dark and need to dim your interior car lights, there are a few things you can do. First, open the door of the car and step out. Then use your key to turn on the headlights. If you’re using a manual light switch, make sure it’s off before turning it on. Now close the door of the car and wait for the headlights to come on automatically. When they do, use your key to turn off all of the lights in the car.