This is because of the antilock brake systems, or ABS. When the ABS is activated in a vehicle it can feel like the pedal is pushing back at you when you stop or start to slowly press the brakes.
my guess is that it is the brake relay
When you push the brake pedal.
look on top of the brake pedal under the dash and you will see the switch, with one hand push the brake pedal down and with the other hand push the brake switch in as far as it will go in it's holder and then pull the brake pedal back with your hand to set it.
Start the engine and then push the brake pedal down. If it is soft and easy to push then the booster is okay. If booster is BAD the brake pedal would be hard to push.
why is my brake pedal hard on 2003 sunfirer
Push the brake pedal? What, exactly, are you asking??
Please re-phrase your question; it appears you are saying the brake lights come on when you push the brake pedal and the lights are working (normal operation). If the lights are staying on after you release the pedal, then the problem is with th brake light switch (sticking). Thanks Malcolm
Hardness in the brake pedal can because by low brake fluid. Air in the brake lines can also cause the pedal to push hard.
Push the brake pedal to released.
You may want to start with the brake fuse. If you still have turn signals and lights. you may also want to check the brake electical relay switch in the relay box Check as well the brake switch located at the brake pedal.
There is an electronic relay switch which turns on the rear brake lights-It's located behind the brake pedal- It clicks when you push the pedal down, making contact.
Just above the brake pedal on the pedal shaft.