Question about 1998 Mercury Grand Marquis

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No turn signals or brake lights

I have a 98 grand marqies the turn signals and brake lights stopped working all at once the third brake light works though and so do the headlights and marker lights.

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  • Anonymous Jan 11, 2009

    The same thing is wrong with my MGM. Could it be the Lighting Control Module

  • Anonymous Mar 29, 2009

    My problem is identical to this scenario.

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  • Master
  • 659 Answers

Try turning the hazards on and off several times these switches go bad and will keep the lights from coming on

Posted on Dec 31, 2008

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1 Answer

BRAKE LIGHTS DON'T WORK BUT THE THIRD BRAKE LIGHT


Chances are the problem is in the turn signal switch. The third brake light circuit bypasses that switch.

Sep 05, 2014 | Cars & Trucks

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98 chevy lumina Rear window break light works, but rear break lights don't, also right turn don't work?


I can almost 100% guaranty the turn signal switch is the problem. Power for the brake lights starts at the brake switch. power then splits from there and the third brake light gets power directly from the brake switch. Since the turn signal and the brake lights are on the same bulb power for the brake lights is routed through the turn signal switch. the switch depending on what position it is in will allow brake power or turn signal power to there respective left or right brake/turn bulbs.

If you hold your foot on the brake pedal and wiggle the turn signal and or play with the hazard switch the brake lights will almost always intermittently start to work. this will confirm a bad turn signal switch which is pretty common on GM vehicle with this style setup.

Apr 05, 2013 | 1998 Chevrolet Lumina

1 Answer

Is there an adjustment for the stop light switch on a 99 GMC Yukon. I have replace it and my brake lights still do not work. Park lights work fine.


There is no adjustment. The park lights are on a different circuit than the brake lights.
Do you have a third brake light that works. Its also on a different circuit but works from the same switch. Do your turn signals work. They use the same filament as the brake lights.
Also, the brake light circuit goes through the multi function (turn signal) switch.

Since the brake lights and turn signal lights use the same filament in the bulbs, the brake light circuit will pass through the turn signal switch. When a turn signal is used it cancels out the brake light for that side.

Let me know if your third brake light and turn signals work in the rear.
Also, if youy have not already, check/change the bulbs. The type of sockets those lights are in also get burned so look at them well.

Oct 18, 2011 | 1999 GMC Yukon

1 Answer

Window break light good but actual break lights not working


sounds like you have a bad turn signal switch.

If the third brake light is working than we know the fuse is good and the switch is good. The third brake light bypasses the turn signal switch. If the rear turn signals are working than we also know that the wiring from the switch to the rear bulbs is also good. The brake lights and the turn signals are on the same bulb so the turn signal switch is what determines if the bulb gets power from the brake light switch or from the turn signal flasher. If the switch is bad usually the first thing that stops working is the brake lights.

Typically you can wiggle, jiggle, pull, push on the switch lever with you foot on the brake and get the brake lights to work. Sometimes turning the four way on and off several times will also get the brake lights to work. If this is the case than a new turn signal switch will solve you problem.

If you have any questions let me know!

Oct 11, 2011 | 1997 Chevrolet Lumina

3 Answers

Just bought second hand 98 chevy lumina and someone stopped me saying I have no brake lights, so I checked and I only see a place for backup lights and turn signal lights. Why do I not have any break...


The brake light in the rear window and the main brake lights are on a different circuit. After the signal leaves the activating switch on the brake pedal arm, it splits. One circuit goes straight to the high mount brake light, the other goes into the turn signal switch. If the rear turn signals work but the brake lights don't, suspect the turn signal switch, not the bulbs and wires. Better to check this before removing and checking bulbs, wires and fuses. It is a common problem with the W-body cars like Lumina, Monte Carlo, Buick Regal, Olds Cutlass and Pontiac Grand Prix. (Approx 94-99 models). Part number is GM 190005031 (w/o radio accessory control) or 19005032 (with radio controls)

Nov 21, 2009 | 1998 Chevrolet Lumina

1 Answer

1995 cutlass ciera stop light and third light don't work


THE 3RD BRAKE LIGHT DOES NOT GO THROUGH THE TURN SIGNAL SWITCH.ASSUMING THE 3RD BRAKE LIGHT BULB IS GOOD.U SHOULD CHECK THE BRAKE LIGHT SWITCH ON THE BEAKE PEDAL.SHOULD BE POWER GOING IN & POWER OUT WHEN U ARE IN THE BRAKE

May 13, 2009 | 1995 Oldsmobile Cutlass Ciera

1 Answer

Lower brake lights dont work,third light does


Turn signal switch 95% of t he time. Try to work your hazards, if it stuck at all will also cause this.

Feb 10, 2009 | 1998 Chevrolet Blazer

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