Interior lighting includes the instrument panel lights, dome light, map lights, door courtesy lamps, rear cargo lamp, and any other miscellaneous lights that may be used to illuminate features or areas of the interior.
The interior lights provide illumination of instruments for nighttime driving and light as needed inside the interior.
Take the time to review your vehicle's owner's manual so you have a clear understanding of what the lights encompass and how they operate. When they are not functioning it can be either the bulb itself which needs replacing, or a fuse. If neither of these simple solutions works to get to the root cause of your car's lighting problem, have the system diagnosed by a qualified service professional.