Car Electronics and Lights
Headlights Tail and Brake Lights
Oldsmobile Cutlass Supreme

Why dont your brake lights work when all the fuses and bulbs are good in your 97 cutlass supreme?

Top Answer
User Avatar
Wiki User
Answered 2011-09-13 13:39:17

If you are sure the fuses and bulbs are good --- there are only a few other thing that will not make your brake lights come on. One is because your brake light switch isn't working. Yes -- there is a switch that makes contact when the brake peddle is pushed down, which than lets the electrical current run to the brake light bulbs. Or wiring from the brake light switch to the brake lights have come unplugged or been damaged, or you have lost the ground to the brake light blubs (highly unlikey) if you lose the ground, other lights should either not be working in the back of the car or coming on dim etc... The Break light switch is either on the master cylinder and works off the fluid pressure when you apply the brakes, or attached to the shaft of the brake pedal itself. Find the switch itself, just look at the master cylinder and see if it has any electrical wires attacked to something on it, or look up under the dash and follow the break pedal shaft and see if you find a switch with wires attached, once you find the break light switch, you should find either two or three wire, going into the switch. If the switch is on the break pedal shaft, make sure that the little nipple that sticks out of the switch isn't broken off, you should be able to reach up under there and push the nipple in and out of the switch, have someone watch the break lights to see if they go on and off, if they do, than the switch has come out of allignment or the nipple has broken and you are pressing on what left of it, and its not long enough to work off the pedal. Next step if it still doesn't work, (and this part also applys to a break light switch if its attached to the master cylinder), disconnect the wires to whichever switch you find, making a note of how they were hooked up so they can be put back on in the right place, once the wires are disconnected from the switch hold the metal ends of the wires to each other and see if the brake lights come on, if they do, than the switch itself is bad and needs to be replaced, (alot of break light switches can be found at Pep Boys, Auto Zone etc...) if the lights still don't come on, than there is a problem with the wiring running from the front of the car to the brake lights. With a test light you can trace the wiring down and find out where the break is in the wiring , or find a bad connection that is causing the problem. Sounds like a lot to do -- but its pretty simple to test the break light switch, tracing the wiring can sometimes be a nightmare. Who knows, you may find the break light switch and find a loose wire on it, it also could be that easy. Hope this helps :-)

User Avatar

Your Answer

Still Have Questions?

Related Questions

1 brake light works other one quit fuses good third brake light wworks bulbs good 1988 olds cutlass supreme?

its the blinker control arm.if you move it back and forth you should see the two other brake lights go on as the brake is pressed.

Your brake lights work when you brake not when you turn lights on?

AnswerThe bulbs for the brake lights are usually separate from the normal tail light bulbs. Check and replace the brake bulbs first, and if they are still not working examine the fuses, switch and wiring.

What do you do if your tail lights do not work while driving though brake lights work fuses and bulbs are good?

on some cars the tail lights and brake lights are totally different bulbs gain access to the bulbs and have someone push the brakes so that you can determine which bulbs are the brake lights and replace the tail lights

Why do your tail lights not work but your brake lights do?

its on different bulbs

What would cause brake lights and running lights not to work you have power to the brake switch?

fuse, bulbs

How do you adjust brake lights Volvo 950?

you do not adjust the brake lights check the bulbs or check switch top of brake pedal.

How do you change the brake lights on a 1997 VW Polo?

To change the brake lights on a 1997 Volkswagen Polo first locate the brake light housings in the trunk. Remove the plastic covers and unlock the bulbs. Remove the bulbs and install the new brake lights.

Your brake lights on your 2002 Acura RSX arent working but your tail lights are?

The brake lights and tail lights are separate wiring systems. Even some of the bulbs may have two separate bulbs in the same glass housing. If the bulbs are in fact working, then the next step would be to test the brake switch under the dash. When you depress the brake pedal the switch is pushed creating a connection to turn on the brake lights.

How do you rewire brake lights for a 91 Honda CRX It is not a fuse it is not the brake switch and not the bulbs.?

Type your answer here... Why are you wanting to rewire the brake lights?

Why do your brake lights not come on when you press the brake pedal?

you probally need to replace the bulbs

What to do if your rear brake lights are not work?

Check bulbs, fuses and brake switch in that order.

Why would brake lights on 1997 Chevy Camero not work when lights are on?

The bulbs are burnt out.

How do you change the brake lights on an Oldsmobile cutlass 1998?

Open trunk and pull carpeting back from the rear lights and you will see wing nuts, take the wing nuts off and pull the complete light assembly out to change the bulbs.

Your brake lights will not work on a 1994 ford escort you have already replaced bulbs and fuses?

Working brake lights are important for safety reasons while driving. It is important to check all of the wiring, if the brake lights are not working and the fuses and bulbs have been checked.

Why do my brake lights and cruise control not work on 2001 ford explorer sport even though all other lights work?

The brake lights are a separate circuit from the other lights. Check the fuses and bulbs. If fuses and bulbs are okay I would suspect the brake light switch is at fault.

What color are your brake lights?

Brake Light ColorMine are clear bulbs ["white"] light, but the bulbs are mounted in an assembly with a red lens.

Dash lights comes on when brake is pressed and third brake light comes on with park lights?

wrong bulbs or bad earth

1990 ford ranger brake lights wont work we checked fuses bulbs and changed brake switch any other ideas?

check that you have double filament bulbs in tail lights

All of your brake lights are out checked fuses and are ok?

Bad bulbs or brake light switch.

Brake lights dont work How do i fix them?

Check the fuse, the bulbs, and the brake light switch.

Brake lights don't work when the brake is pushed. Work with headlights on only.?

The brake lights and the tail lights are separate circuits. Check the brake light fuse, then check the brake light bulbs, then check the brake light switch.

Why does your tail lights work but not your brake lights?

Make sure both bulbs are good (dual filament bulbs) check the brake light switch on the brake pedal. Also, if you are wired for a trailer hitch, the 4-5 wire module may be bad. Eliminate it and check the brake lights again.

No brake lights on s-10 blazer?

It is important to have working brake lights on a vehicle. If the brake lights are not working a person should first check the fuse, bulbs and at last the wiring.

What could cause the rear brake lights to melt on a 2003 Pontiac Sunfire?

Probably the wrong bulbs or the brake lights are getting stuck "on". Or maybe a combination of the two. Check that you have the right bulbs and check to make sure something isn't keeping the brake lights on. FriPilot

Why does your 2003 Ford Explorer's brake lights not work but the bulbs and fuses are fine?

If the bulbs and fuses are fine, it must be your brake light switch attached to the arm on your brake pedal.

Still have questions?