I think this has been asked before, i tried to find it but i was unsuccessful...

On my car you got that one brake light in your console that comes on when u pull up the e-brake...well ive noticed if i have to hit the brakes hard, that light comes on. And leaving work the other day, it would come on almost everytime i pushed the brake. It quit after about 5 minutes though. Anyone know whats up?

 

i dont really know but u might just have a short by ur ebrake handle, or u might be low on brake fluid.

 

check your levels.

 

check your brake fluid

 

youre low on brake fluid. there is a sensor in the reservoir that floats with the level.

 

check your rotors and pads

 

Do what they said...check your fluid level. If it's low, checks the pads. As the pads wear down, the calipers have to expand out further, in turn causing the fluid level in the resevoir on the master cylinder to drop, eventually causing the brake light to come on. Also, if the pads are low, don't add more fluid just to turn the light off. Replace the pads and then adjust your fluid level accordingly.

If none of this seems to be your problem, start checking your calipers, wheel cylinders (I'd assume you have disc brakes all around, but if not, you'll need to check these in the rear), master cylinder, and hoses for leaks.