Q: Brake lights on constantly

asked by on January 11, 2017

Brake lights are staying on all the time. With ignition off and on. Third brake light not working. When it happened I assumed it was the brake switch and changed it. They were still on. Unplugged harness at abs module and still on. Checked fuses and fuse for brake switch/cab brake light was blown. Changed fuse and lights functioned normally. Fuse blew again and lights stay on. Changed fuse and they worked for 4 pumps on pedal and blew fuse again and theven lights stay on. They shut off after 10 minutes or so when it sits with ignition off.

My car has 108000 miles.
My car has an automatic transmission.

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