Try the brake switch under the dashboard up at the top of the brake pedal
Or you might check the fuse or even possibly the wiring harness connection at the back of the vehicle. A lot of cars have a connector that connects the rear light wiring harness with the main harness. These connections are prone to corrosion. When they get too corroded the wires can break causing the lights not to work. The brake switch on the brake pedal is the least likely cause of this problem unless you have been working up under the dash.
I have a 03 gran prix and my brake lights doesn't come on when I go to brake
Bad brake switch. Typically located at the top of the brake pedal.
The BOO (Brake On/Off) Switch may need to be replaced. If it is bad, it would cause the brake lights to NOT illuminate when the brake pedal is applied.
That the lights need fixing maybe?? That the lights need fixing maybe??
Possibly blown fuse, bad brake light switch, or blown brake light bulbs.
its gotta be a ford a problem with the center brake light circuit causes the lights to go out i believe it is a diode
Fuse, wiring, bulbs
Often this type of behavior is caused by a bad ground for the lighting circuit. Check the ground circuit for the brake lights.
Defective or mis-adjusted brake light switch
fuses are blown, or bulbs are blown
possably the switch at the brake? do your brake lights work??
Bulbs, wiring, fuse, brake light switch.