Question about 2005 Ford Mondeo

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Brake lights on constantly till i turn engine of,

As soon as turn car on and touch brake pedal my brake lights stay constantly on till i turn engine of.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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MrRodneyLong
  • 66 Answers

SOURCE: service engine soon & brake light stays on

the service engine light is prob due to the oxygen sensor being damaged, not replace or you having the catalytic converter taken off---just messing with you. start at auto zone and have then do a free code read then go from there. you should troubleshoot the low fluid level switch for your brake fluid. unplug it and see if the light goes off and if it doesn't jump the two terminals on the harness. oh the car will have to be running. Let me know MrRodneyLong@gmail.com

Posted on Jul 04, 2008

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alicantecoli
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SOURCE: Engine light after dead car

try cleaning the battery terminals first and see what happens

Posted on Jun 04, 2010

  • 11 Answers

SOURCE: brake lights stay on

The brake light switch is sticking,look under dash the switch is hooked up to the pedel,see if there is a sping or is it built into the switch.hope this helps you

Posted on Jul 11, 2010

  • 14036 Answers

SOURCE: my 1996 taurus has the

CHECK BRAKE LIGHT SWITCH TO SEE IF ITS TOUCHING THE BRAKE PEDAL.IF BRAKE LIGHT SWITCH OR BRACKET LOOSE AND AWAY FROM BRAKE PEDAL BRAKE LIGHT WILL STAY ON.IF BRAKE LIGHT SWITCH INTACT BRAKE LIGHT SWITCH NEED REPLACING.WHEN REPLACING BRAKE LIGHT SWITCH OR IT NEEDS ADJUSTING MAKE SURE BRAKE LIGHT SWITCH PLUNGER TOUCHES BRAKE PEDAL ARM WHEN YOU RELEASE BRAKE PEDAL BRAKE LIGHTS SHOULD TURN OFF.

Posted on Sep 01, 2010

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1 Answer

Brake lights stay all time


Most likely problem is the brake light switch is broken or out of adjustment. The switch is located under the dash on the arm lever of the brake pedal. When the pedal is at rest, the arm presses the switch in and turns off the lights. If the switch gets loose, broken, or out of adjustment, it may not close and allow the lights to stay on constantly.

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I had this same problem. I turned off my car and the brake lights stayed on. I looked under the dash and found that the brake pedal, when not pressed, barely touched the brake light switch, which controls whether the brake lights are on or off. Initially though I just wedge a thin piece of adhesive foam between the pedal and switch, which worked fine for several months until I found the time to properly fix it. My brake light switch was adjustable so i eventually adjusted the nuts on each side of the brake switch holding it to the pedal bracket so that the brake pedal pushed in the white brake light switch when released. Hope this helps!

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I have replaced the Master Cylinder (bleed before putting on car), bleed the brakes as well as pressure bleed, replaced buckets in the slave cylinder, replaced rear shoes, no air in line, however while the...


Your brakes are vacuum aided so when engine is off the pedal will be hard. When the engine runs the vacuum is active and the pedal becomes light. Your brakes are working but need adjustment so that the pedal does not go to the floor.
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1 Answer

My 1996 taurus has the brake lights constantly on. when you disconnect the switch by teh brake pedal the car will not shift out of park but teh brake lights turn off???


CHECK BRAKE LIGHT SWITCH TO SEE IF ITS TOUCHING THE BRAKE PEDAL.IF BRAKE LIGHT SWITCH OR BRACKET LOOSE AND AWAY FROM BRAKE PEDAL BRAKE LIGHT WILL STAY ON.IF BRAKE LIGHT SWITCH INTACT BRAKE LIGHT SWITCH NEED REPLACING.WHEN REPLACING BRAKE LIGHT SWITCH OR IT NEEDS ADJUSTING MAKE SURE BRAKE LIGHT SWITCH PLUNGER TOUCHES BRAKE PEDAL ARM WHEN YOU RELEASE BRAKE PEDAL BRAKE LIGHTS SHOULD TURN OFF.

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2 Answers

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1 Answer

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Is it just the Rear Window Light that stays on, or is the Rear Window Light and the brake lights located at the back/bumper of the car? If it is BOTH the Rear Window Light AND the brake lights at the rear of the car, then you likely have a faulty brake switch located at the brake pedal inside the car cabin. When the brake pedal is in the normal position, ie - you are not depressing the brake pedal, the arm of the brake pedal leading to the pedal with your foot pushes upon... this arm is applying constant pressure to the switch - with keeps your brake lights OFF. When you apply pressure to the brake pedal, it moves the brake arm away from the switch, which activates the circuit, and your brake lights turn on. If this switch is broken, your brake circuit thinks the brake pedal and arm are being pushed away from the switch, and your brake lights turn on. As you are aware, having the light on constantly can wear down your battery AND the heat from this constant light bulb of the brake light in the rear window can deform the shape of the red reflector in this rear window light housing. If, however, it is only the rear window light that stays on - then it is probably a loose or bad connection where this light plugs into the rest of the circuit in the trunk near the back seat. If this is the case, follow the wires from the rear window light assembly to the point where they plug into the rest of the circuit (inside the trunk) and unplug this wire set, clean the terminal ends, and plug them back together. ***WAIT, WAIT!!*** because you of the risk of touching the terminal ends together and blowing the circuit, if you also plan to clean the hot side, please remove the NEGATIVE battery terminal while cleaning (DO NOT USE WATER, just a wire brush or steel wool). After you are done cleaning and have the terminals reconnected, reconnect the negative battery terminal (you will also have to reset your radio stations and radio clock).

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1 Answer

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