What is a backup light switch?
You might see a backup light switch called a reverse light switch or backup lamp switch. They’re all the same thing—a small metal part with a button on the end. The switch is in your car’s transmission. It can be located on the exterior or interior of the transmission, depending on your vehicle. If you have a manual transmission, it’s more likely to be located outside; with an automatic transmission, your backup light switch might be inside the transmission.
When you shift your car into reverse, a small lever in the gearbox pushes the button on the backup light switch to activate the car’s reverse lights. This alerts pedestrians and other drivers that you’re backing up. The extra light can also help when you’re backing out of a parking spot in the dark.
When should I replace the backup light switch on my car?
You are legally required to have working backup lights, so make an appointment to get the repair done immediately. Your backup light switch might be broken if your reverse lights:
Are always on, and you can’t turn them off
How often should a backup light switch be replaced?
Backup light switches usually last the life of the vehicle, so the only time you need to replace your switch is if it stops working. The good news is that your replacement switch will last a very long time!
Can I replace my backup light switch myself?
If the switch is on the outside of the transmission housing, the replacement is a simple DIY. But, if it’s mounted internally, you need to have a professional technician complete the job. The risk of damaging expensive components is just too high.
A mechanic will also check to see if your car problems are actually caused by a burned-out lightbulb, a blown fuse, or a wiring issue.