The tailights might be burned out. Typically the tailights and brake lights are separate bulbs.
WHAT ARE YOU DUMB REPALCE YOUR LIGHT BULBS STUPID! Not stupid replaced circuit boards checked fuses ran test light . When headlights are on no brake light or taillights and have all new bulbs stupid. Turn headlights off brake lights work, so figure that out smart man
Is it the taillights or the brake lights? If taillights it may be a wiring problem, If brake lights check the switch on the brake pedal
because your tail light works off of other side of a 2 way bulb.change bulb and will fix problem
AnswerIf this were my car, I would replace the brake light switch ( near the brake pedal ). This could be the problem and is about the cheapest thing to start with. Good luck.check the ground connection at the taillights a bad ground will cause this
the circuit boards on the taillights are bad.
Check the bulbs they are double filamented and filaments may be touching each other causing a backfeeding situation through the stop light circuit.
Do parking and dash lights work? If not, may be fuse most vehicles it is the same circuit
The brake fluid level may be low in the reservoir. If the reservoir is low it's telling you the brake pads are worn down. As the brake linings wear down the fluid level drops and eventually turns on the brake light. Have a mechanic check your brakes soon. See "Related Questions" below in case the brake light in question is/are the ones in the taillights. Not uncommon for Windstar brake lights to turn themselves on.
in dash lights
The tail light circuit is separate from the brake and signal light circuit. So, check the fuses, check the bulbs, check the sockets and if you haven't found the problem yet, check the wiring.
move the wiper connection around while somebody presses on the brake if brake lights come on replace circuit board to wipers my 94 chevy 4x4 did that found by accident 3yrs later was about to trash the truck
No , the rear brake lights do not turn on when you use your parking brake , just the brake light on your dash is supposed to come on