Unveiling the Mystery Why Your Top Brake Light Stays On

Brake light switch is at the top of the brake pedal behind the kick panel trim under the drivers side of the dash. A faulty brake light switch can cause brake lights to stay on constantly, flicker, or not come on at all. It's easy to replace the brake light switch yourself. Are the tail light bulbs dual filament with the brake lights using same bulb, are you sure both bulbs are in sockets properly and not bridging ... Easy one of your brake light bulb solder has melted and is touching tail light and feedback pull your brake bulbs and look at the contacts. ;). A common issue on Hyundai cars that can cause the brake lights to stay on is the rubber switch stopper gets brittle and falls off. the brake light switch is on the firewall under the hood at the rear valve cover.. It is ''Hot'' all the time, key on or off.. or on the treadle ... Pull the tails and check the bulbs, if they are the correct type make sure they are seated correctly and not burned out, if they are LED's take ... The cause of this, they said, was that the LED bulbs had an improper resistance level in comparison to the stock incandescent 3157 bulb. Googling reveals how common this problem is across the entire motor vehicle range. It can be the switch (brake pedal) third light connector(s) ... The third brake light is a red high mount brake like that comes on when you hit the brakes. On either side are the white cargo lights.