first of all, do you mean the "3rd brakelight" or the taillights or both?
that would help determine the cause of the problem.
then i would check the bulbs, as dumb as that sounds. the taillights are dual filament. its quite possible the brake light filament just went bad. but you still have to replace the whole bulb.
then i would check your fuses.
then i would check the brake sensor at the pedal.
that would help determine the cause of the problem.
then i would check the bulbs, as dumb as that sounds. the taillights are dual filament. its quite possible the brake light filament just went bad. but you still have to replace the whole bulb.
then i would check your fuses.
then i would check the brake sensor at the pedal.