The most likely cause is a bad brake light switch (if none of the brake lights illuminate) but if its only one of the brake lights, try changing the bulb. Even if they still work as running or turn lights because they have a double filament and may still work partially, but not as brake lights.
brake switch ???
If you mean the brake lights are stuck on, then check the stoplight switch located on the top of the brake pedal.
fuse, bulbs
Usually that would be caused by a faulty brake light switch connected TO the brake pedal. If the brakes work the pedal is probably ok.
BAD BRAKE LIGHT SWITCH AT TOP OF BRAKE PEDAL
Blown fuse or bad brake light switch?
check the fuse for the brake lights, they have thier own. also check the brake light switch at the at the top of the brake petal
The bulbs are burnt out.
Bad bulbs? Blown fuse? Brake light switch defective or out of adjustment
Uh...I would first check to make sure your bulbs are not blown. check brake light fuse. If still no trace wiring fro brake lights back. Hope this helps. You might also check the brake light switch on brake pedal.
my back brake lights don't work, but the brake light on the back door does what could be wrong
Check your fuses. Sometimes it is just that simple.