Power brake booster failure or vacuum supply to booster insufficient.
It wasnt assembled right
look on the brake pedal lever.
on your brake pedal lever.
most likely a clog in the line or wheel cylinder or maybe a broke spring
there is a switch up under the brake pedal
On the brake pedal assembly.
Yes, sometimes it is.
On the brake pedal.
It is mounted to the left of the brake pedal under the dash.
Brake Lights Stay on Unless the Brake Pedal is RaisedThis is usually caused by the brake light switch being out of adjustment in its physical distance to the contact point on the brake pedal arm.
If you follow the brake pedal up under the dash, you'll see the switch where the actuator arm from the brake master cylinder attaches to the pedal.
Mounted on the upper part of the brake pedal.