What to Do When the Corolla's Interior Lights Stay On?

[VonLouis]

First, check if there is an issue with the reading light switch. If the reading light switch is indeed faulty, it will need to be replaced with a new one. If the reading light switch cannot be replaced on the same day, locate the vehicle's reading light fuse.

[HarleyRose]

I've been in car repair for years and have encountered many cases of Corolla headlights staying on, usually caused by stuck switches or relays. First, try closing the doors and locking the car, then observe for a few minutes. If the lights go off, it's likely an accidental auto-setting trigger. If they remain on, check if the headlight switch is stuck by pressing it gently several times. Corollas often have relay failures—you'll need to open the engine bay and locate the fuse box, typically positioned under the hood on the left side, to inspect for blown fuses. Leaving the lights on overnight can drain the battery, leading to morning startup failures, which is a significant hazard. It's best not to DIY too much; incorrect wiring can cause more trouble. I recommend driving to a repair shop for a technician to test with a multimeter. Regular inspections of the lighting system during maintenance can prevent issues and save on replacement costs.