Question about 2004 Mercury Mountaineer

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Brake lights stay on when vehicle shut off on 2004 Mercury Mountaineer. If you lift brake pedal up, lights go off.

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The BRAKE LIGHT SWITCH needs to be Readjusted, Simply Move it Closer to Pedal Arm to Adjust. There is a NUT that you must Turn to do this. If you take a Good Look at it it is SELF EXPLANITORY.
I Hope this Helps , Well I Know it Will as it5 is OBVIOUS as to what the Problem is. Have a Good Day

Posted on Sep 27, 2009

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You need to adjust or replace the brake light switch found on the upper part of the brake pedal

Posted on Sep 27, 2009

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You need to replace the or adjust the brakelight switch. If you can pull up on the brake pedal does it have a lot of movement in it if it does the brake pedal return spring could be bad not allowing it to return the pedal to the full up position. You will have to go to the dealer and get a new one or go to a salvage yard and get one out of a wrecked vehicle.

Posted on Sep 27, 2009

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There is a switch mounted at the pedal bracket. This is usually adjustable by simply turning the switch. You may have to remove the cover that is under the dash in order to see the switch.

Posted on Sep 27, 2009

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2 Answers

2002 nissan exterra, brake light stay on even when the car is off...


The switch is above the pedal. Check to see if it is broken or loose

Mar 25, 2014 | 2004 Mercury Mountaineer

1 Answer

2004 mercury mountaineer got lock in park today,, got it undone. Noticed it said check fuse for the breaks.. I had no break lights.. well, can't figure out which fuse that is.


BRAKE LIGHTS AND SHIFT LOCK
Look under the dash, on the brake pedal arm. There are one or two switches that activate brake lights and/or shift unlock. Check for loose mounting nut or a missing rubber nubber. Is the brake pedal coming all the way back up? Look on the floor for something not usually found there. These switches are adjustable and it may be as simple as adjusting them. Have a helper look for brake lights on and shift lever unlocked while you push and release the switches with your finger. Depress the brake pedal to get it out of the way. Remember to set the park brake first. Could just be a bad switch or loose connector. Check fuses and the bulbs. Is shifter fully in Park?

Aug 20, 2011 | 2004 Mercury Mountaineer

1 Answer

The brake lights on my 2004 Mountaineer gets stuck. I was told that the problem is probably the brake light switch. How easy is that to adjust/replace? and where can I find instructions on how to do it?


The switch rides on the shaft that the brake pedal is attached to. When you depress the pedal the shaft pushes the switch in and turns the brake lights on. When you release the pedal a spring returns the switch to its extended (OFF) position. Your problem could be a broken spring, or it could be just the switch sticking on return. A bit of spray lubricant on the switch assembly might cure the problem. Otherwise, the switch is inexpensive and simple to replace, with just one or two screws holding it in place. To locate it, just run your hand up the brake pedal shaft.

Bill B

Sep 21, 2010 | 2004 Mercury Mountaineer

2 Answers

Brake lights will not turn off, 2002 mercury mountaineer


check switch at brake pedal and relay under hood (in fuse box)

Sep 04, 2010 | 2002 Mercury Mountaineer

1 Answer

Backlights our sticking


Get on the floor on the driver side with a flashlight. Behind the brake pedal is a bracket and the brake swicth. If the rubber stopper is gone, worn down or broken, replace it or fill the gap with epoxy glue.

Once repaired/replaced check that when you press the brake, the lights come on and when you release it the lights go off. You ll need a helper for this.

Check the upper brake pedal bracket for play. If it moves too much, take it apart, clean it up and grease it to make sure it doesnt cause the brake swicth to stay pressed.

Hope this helps, please vote :)

Aug 30, 2010 | 2004 Mercury Mountaineer

1 Answer

My Mountaineer accelerated while I was braking and


it could be either --throttle body sticking open will cause constant acceleration when u lift off pedal-cableless accelerator [electric gas pedal ]if a sensor or electronic part shorts out can open throttle body causing acceleration- would need to have it diagnosed to find out which problem is correct

Mar 01, 2010 | 2004 Mercury Mountaineer

1 Answer

ABS light on a 2004 Mercury Mountaineer. How do I fix it?


Go to Autozone or Oreillys and see if they have a scanner for the ABS system. They usually scan for free.
The ABS will measure braking problems and things like worn brake linings and debris on wheel sensors.
You would want to verify the code light and then have the lining visually inspected.
There can be problems with the emergency brakes which require the rear rotors to be removed from the vehicle. Some of the rotors are a problem to remove because of rust.

Dec 30, 2009 | 2004 Mercury Mountaineer

2 Answers

Brake lights stay lit


hey i have had this problem before it probably the brake light switch it bad replace that it located under brake pedal

Feb 10, 2009 | 2004 Mercury Mountaineer

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