Third brake quit working - 2007 Hyundai Accent GS Hatchback

Hello .. As strange as this may sound ,, your brake lights are (most of the time) tied into your signal light switch . Try plugging in on you know is good before buying a new one . It stops your front signal lights from coming on when you apply the brakes since your signal lights usually run on the same wire as the brake lights ....

clutch

Replace the brake light switch located by the brake pedal. That will resolve your problem

IF upper works then the bottom ones have burned out bulbs, or socket issues, or wiring issues. Most probable cause is blown bulbs.

check the bulbs the filiments could be broke, do you have a third brake lightand is it working this will help rule out a brake switch

on chrysler products the third brake light is run independant of the body control module, try checking the fuses that run the brake lights and see if any are faulty if not check you have voltage at the switch and a signal getting to the lights.

the third brake light requires a wire ribbon replacement,
typically on bentley gt. It is quite the job since the light is installed at the factory before the rear window is put in, There is a procedure for replacement leaving the glass in but requires replacement of the light itself and the ribbon cables,

check the turn signal switch. The right and left brake lights go through that switch. you might need to repair it or replace it. does the signal lights work?

This is usually caused by a defective multifunction switch, see it quite allot, the clue is the 3rd brake light, it is on a separate fuse and does not run through the multifunction switch on the steering column.

some one has the bulb in backwords or check the wires they might have them crossed