What are the reasons why the 2021 Corolla cannot turn on the high beam?
2 Answers
Corolla high beam cannot be turned on due to reasons such as filament burnout, fuse damage, switch damage, etc. The following are the reasons and solutions for the high beam not working: Filament burnout: Most cars have separate high and low beam bulbs. If the high beam is on but one low beam is not working, it may be due to the low beam filament burnout, and replacing the bulb can solve the problem; if both low beams are not working and the filaments are not burnt, this situation may be caused by a switch or relay failure, and troubleshooting is required. Fuse burnout: You need to open the car's fuse box and check if the low beam fuse is intact. If it is burnt out, replacing it with a new one will solve the issue.
I've been driving for years and have encountered several headlight issues. The 2021 Corolla's high beams wouldn't turn on, which usually comes down to a few common problems: First, the bulb might be burnt out. High beam bulbs can easily have their filaments melt after prolonged use, especially when frequently used at night. Second, it could be a blown fuse. There's a specific fuse for the high beams in the engine compartment's fuse box—check if it's broken. Third, it might be due to poor contact in the switch or relay. The Corolla's light controls are quite sensitive, and wear on the switch can cause failure. Another possibility is aging or short-circuited wiring. New cars are fine, but if you've modified the lights, the wiring might be faulty. Last time this happened to me, replacing the bulb fixed it. I'd recommend getting it checked at a professional shop first—don't wait until you're driving at night and risk an accident. Safety comes first. Also, checking the bulb condition during regular maintenance can prevent this issue.
