Headlights Tail and Brake Lights
Chevy Silverado
Oldsmobile Cutlass Supreme

Why would your brake lights stay on all the time?

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Wiki User
2018-04-27 15:35:27
2018-04-27 15:35:27

The most common cause for your brake lights staying on is the switch in the foot brake pedal. If it comes loose or is broken. Check the brake pedal assembly, if it has come off it will be hanging about by it's wires or may just be loose. It's a normally closed switch which means it works the opposite way round to a normal switch. IE. ON when not operated and OFF when operated. The brake pedal normally sits against the switch which keeps the circuit open and hence the lights are off. When you press the brake pedal, the switch is released, circuit is closed and the brake lights come on.

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