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Why left side brake light doesn't work when I step on the brake but works when the head light is on?

tail light bulbs has two filaments inside. One for regular lights and a second for brake lights. One filament is burnt out. Change the bulb.


1999 montero sport ive changed one of the tail light bulb it works when you turn the lights on but it doesnt work when you hit the brakes what do you do?

make sure u got a twin lement bulb one element is for tail light other is for brake light sounds like u just put wrong bulb in


How does a brake light relay work?

The way i understand it is that the relay has the hot and the ground connected and when you press the brake the relay works like a toggle and completes the circuit.


What could be wrong with a 2003 Chevy pickup when the brake light works on the cab but not at the tail light lens and the brake light stays lit on the passenger side if the running lights are on?

The bulbs and or sockets are dirty/corroded and need either cleaned or replaced. The corrosion causes the light to not have a good ground contact, therefore the circuit's power is finding it's way through other systems.


What could cause brake lights on 2000 accord to not work other then lights fuse and brake light switch middle brake light works just the rear 2 do not?

Something you may not realise is that the brake light bulb is often one bulb with two elements. One of the elements will be for the brake and the other will be for the tail lighting for example so,when tested, the actual bulb will still light up because the second element is unaffected. Make sure that the 'blown' bulb that you are actually changing is not in fact your fog lamp. This will not automatically light up when you test your lights as you have to operate this light separately (similarly to indicator lights). So the fog lamp bulb will appear to be the only one not lit up when you test your lights. Find the bulb with two elements inside and change that one. Sounds obvious (and may be obvious to many) but it's a common mistake. Hope this helps!.

Related Questions

How do you fix your emergency brake light that stays on when your emergency brake is not engaged?

it does that on mine becsue the brake doesnt work if ur break works its probally a short or something


What would make the brake lights and reverse lights on your 93 ford ranger not come on Bulbs are good and top brake light works?

u have a short in ur wireing.


How the brake light switch works?

There's a switch on the brake pedal that when you step on it, it completes the circuit for lighting up the brake light.


Where does the high center brake light wiring and the brake light wiring split on a 1997 Chevy lumina. the high center brake light works but the brake lights do not?

Check bulbs?


What fuse is the brake lights on 2000 ford expedition?

The left brake light works the right brake light doesn't and the bulbs is good


95 Cadillac Deville The Right Brake light doesnt work when you brake but when I use the turn signal it works fine What could be the problem I changed the bulbs on both tail lights and nothing?

Problem may be in the steering column turn signal not cancelling completely - try "jiggling" stalk and have assistant watch brake light


99 s-10 pickup your LR brake light will not light up when you push the brake but the blinker works why is this and what can i do everything seems to be able to work?

try changing the build i think it has a double fillement build that works with the brake light and blincker


How do you repair a tail light of a Mitsubishi eclipse 1996 that is not working when you turn on the headlight but works when you brake?

Replace the bulb it works when you turn on the driving lights and when you brake. there are two little springs inside the light one is for the brake light and the other is for the driving light. All you need to do is replace the bulb. good luck.


Center brake light works side brake lights do not work 2000?

its gotta be a ford a problem with the center brake light circuit causes the lights to go out i believe it is a diode


What could you check if your drivers side brake light works when headlights are off but not when on?

The ground for the brake lamp. When the tail lights are off, the tail light circuit can act as a ground for the brake light. When the tail lights are on, it can't.


What could cause brake lights on 2000 Grand Cherokee to not work other then light fuse and brake light switch middle brake light works just rear do not?

You need to check the wiring for power to the bulbs.


Brake lights on 99 S-10 stay on all of the time but the third light on the cab works brake light switch replaced and they are still on what else could be wrong?

why my jeep brake light on all time