Brake Lights not working

Hello,
My wife has a 2004 Sentra. I recently noticed that her brake lights were not illuminating when she stopped the car. All other lights work correctly (headlights, turn, tail lights), but all 3 brake lights never seem to work. I have replaced the fuse for them and still get nothing. (the original fuse look fine). Is it possible that all three bulbs burned out at the same time? Is there anything else I should check? Thanks for any help you can give!

try the switch on the pedal. alot of people are having the same problem and that seems to be it. good luck at least you still have your sentra.mine is dead. rip.