1. Check the light switch. Make sure that the interior light switch is turned off. If it is turned on, the lights will stay on even when the doors are closed.
2. Check the door switches. Make sure that the door switches are working properly. If a door switch is not working properly, the interior lights will not come on when the door is opened.
3. Check the wiring. Make sure that the wiring to the interior lights is intact. If the wiring is damaged, the lights will not work.
4. Check the battery. If the battery is old or weak, it may not be able to provide enough power to the interior lights. If the battery is dead, the lights will not work at all.
Once you have checked all of these things, if the interior lights still do not work, you may need to take your car to a mechanic to have them repaired.
