My brake lights stay on

1999 HYUNDAI SONATA
132 MILES • 6 CYL • 4WD • AUTOMATIC
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2HYUNDAI
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  • 1 POST
My brake lights on the outside back of the car came on suddenly and won't go off.
Apr 22, 2010 at 8:11 PM
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SQM
  • CAR REPAIR CONTRIBUTOR
  • 6,383 POSTS
Hello,

It sounds like you have a shorted-out brake light switch. It is possibly stuck at the on position.
The brake light switch is located behind the brake pedal lever. When the brake pedal gets depressed, it pushes against the switch to turn on the lights.
Over time the switch can be ware off and short or not connect at all.

Here is a helpful video:

https://youtu.be/RBCDVfzNQGk

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.
Oct 13, 2021 at 1:08 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.