I have a four door LX sedan. My break light (the two tail light & one center light) does not turn on when break pedal was depress. I changed the center light bulb and it work. However, the two tail light still doesn't turn on. When I turn on the main light switch, all lights are functioning except when you depress the break pedal, the break tail light does not turn on.
Do you know if the brake light bulbs are working? (are the bulbs good?). (the bulbs have two parts, one for brake lights the other for running lights) If the third brake light bulb is working the brake lights should be with good light bulbs.
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Check the harness under the truck, it may be damaged or has a pulled loose connector, follow it back along the chassis checking for power along the way with the pedal depressed. A 12 volt test light works well for this work.
Most likely is going to be a break switch locaded under the dashboard on driver side on break pedal is a switch that is depressed while processing on brake pedal , disconnect switch and see if the problem persist and if it doesn't replace break light switch
Check all the light "sockets" in the back,look for damaged wires, check the wire harness that goes to your tail end door for wire damage, you could try to reseat each bulb and when doing so look for corrosion in the light sockets. other than that,your center break light in back may have a control unit that may be bad and shorting out. you need to test things 1 by 1. good luck!
It sounds like you have burnt out bulbs. All those other lights that you say work are all different bulbs. The tail light bulbs have dual filament so that they can perform the tail light and brake light function. You should change out your bulbs and that will probably solve your problem.
In all probability, the brake switch got stuck in the closed position.
One way to test it is by trying to move the shift lever from Park to
Neutral without depressing the brake. If you can do this, then the
switch is damaged. It is very simple and inexpensive to replace.It is
located a few inches above the brake pedal rubber pad.
Check the lamps first to see if both are good, do a wiggle test to see if the lamp's socket is good(sometimes they get too hot and the contacts spread open). Next check fuses for the running lights and break lights. If the running lights work on the front but not on the back then its not a fuse its a ground issue. Use a stick or another person to depress the break pedal to check for power at the plug that goes to the stop/running light lamp.
there is a ground problem, most likely in the tail unit itself, but a ground problem is hard to find and easy to fix. reground the system, the turning unit, and the problem should stop. About the hazards, I don't know...... some times in older cars, that is the way it works. because the brake and hazard element in the bulb is the same and the old cars used a break in the power, but the new cars use a break in the ground. any way, chase the ground down first, it is usually the cause.
I had the same issue. It turned out that the break pedal switch was broken. The engine start push button is connected to a second break pedal switch that senses when you push it. That switch is independent from your main break pedal switch that turns on the brake lights of the car.