Mercury Mountaineer Brake Light Switch Replacement at your home or office.

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Brake Light Switch Replacement Estimate for Mercury Mountaineer

Mercury Mountaineer Brake Light Switch Replacement costs $156 on average.

CarServiceEstimateShop/Dealer Price
2004 Mercury MountaineerV6-4.0LService typeBrake Light Switch ReplacementEstimate$320.75Shop/Dealer Price$388.34 - $563.21
2009 Mercury MountaineerV8-4.6LService typeBrake Light Switch ReplacementEstimate$170.13Shop/Dealer Price$205.08 - $282.00
1998 Mercury MountaineerV8-5.0LService typeBrake Light Switch ReplacementEstimate$124.15Shop/Dealer Price$147.61 - $190.04
2006 Mercury MountaineerV8-4.6LService typeBrake Light Switch ReplacementEstimate$170.13Shop/Dealer Price$205.06 - $281.96
2006 Mercury MountaineerV6-4.0LService typeBrake Light Switch ReplacementEstimate$170.13Shop/Dealer Price$205.10 - $282.03
2007 Mercury MountaineerV6-4.0LService typeBrake Light Switch ReplacementEstimate$170.13Shop/Dealer Price$205.08 - $282.00
1999 Mercury MountaineerV8-5.0LService typeBrake Light Switch ReplacementEstimate$129.15Shop/Dealer Price$152.47 - $194.80
2010 Mercury MountaineerV6-4.0LService typeBrake Light Switch ReplacementEstimate$191.87Shop/Dealer Price$231.24 - $320.90
Show example Mercury Mountaineer Brake Light Switch Replacement prices

Brake Light Switch Replacement Service

What is the brake light switch and how does it work?

The brake light switch is a mechanical switch activated when you press the brake pedal. The switch has a plunger in it that contacts a lever in the brake pedal assembly. As that plunger is depressed when you push on the brake pedal, the contacts in the brake light switch closed and voltage flows to the brake lights — turning them on. The brake light switch is also in the circuit that controls the cruise control disengagement and the shift interlock safety feature installed on all newer cars. Failure of the brake light switch occurs due to wear on the internal electrical contacts in the switch, poor switch terminal connections, maladjustment of the switch, or damage to the brake pedal assembly.

When to consider replacing the brake light switch?

  • No brake lights. If depressing the brake pedal does not cause any of the brake lights to illuminate, the continuity of the switch will be tested. If only one brake light is out, then the issue is not the switch but rather the bulb, bulb socket or brake light circuit integrity.
  • Unable to shift out of park. The brake light switch is also wired into the shift interlock mechanism. If you are unable to shift out of park, with your foot on the brake, check to see if the brake lights will illuminate as you push the pedal. If they do not illuminate, failure of the brake light switch may be the cause of the no shift.
  • Intermittent operation of the brake lights or late operation. The brake light switch has to be in the proper position, and work consistently if the brake lights are to come on the instant you press the brake pedal. The switch can sometimes require adjustment, or the contacts may degrade, causing inconsistent operation of the switch.

How do mechanics replace the brake light switch?

  • The switch is first tested using a multimeter, including the terminal contacts to the switch, to determine if it is faulty. If the switch is functioning, the entire circuit must be tested to determine the cause of no brake lights.
  • Should the switch be judged defective, the switch is unthreaded from the mounting boss near the brake pedal assembly.
  • The new switch is threaded in and locked with an appropriate locknut once the new switch is properly adjusted.
  • The operation of the switch is tested to ensure instant illumination of the brake lights upon pressing the brake pedal.

Is it safe to drive with a brake light switch problem?

No. Should the brake light switch have failed, it is unsafe to drive the vehicle because drivers behind you will have no indication that you are slowing, intend to slow, or are stopped. Always address a failure of this type promptly to ensure your safety while driving.

When replacing the brake light switch keep in mind:

  • The mechanic will test the brake light switch directly to ensure that the issue is not elsewhere in the brake light circuit.
  • Occasionally, the issue is a maladjusted switch or a loose contact, and the mechanic can resolve the problem without switch replacement.

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Meet some of our expert Mercury mechanics

Real customer reviews from Mercury owners like you.

Excellent Rating

(220)

Rating Summary
208
6
1
1
4
208
6
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4

Jeremy

20 years of experience
545 reviews
Jeremy
20 years of experience
Mercury Mountaineer V8-5.0L - Heater Blower Motor - West Palm Beach, Florida
WAS ON TIME AND COMPLETED THE JOB WITH NO PROBLEMS.

Duane

25 years of experience
491 reviews
Duane
25 years of experience
Mercury Mountaineer V8-4.6L - Axle / CV Shaft Assembly Replacement (Passenger Side Rear) - San Diego, California
Showed up to replace ABS sensor which another technician said was my problem but after inspection showed me the other technician was wrong and my axle was actually cracked and needed to be replaced and he went out of his way to drive to escondido from san diego to get the part I needed and replaced it quick and easy and now theres no more ABS light on my dash all within an hour. Very professional and explains exactly and shows exactly whats going on.

Tony

15 years of experience
280 reviews
Tony
15 years of experience
Mercury Mountaineer V6-4.0L - Brake Pads Replacement (Front, Rear) - Duluth, Georgia
Tony was very knowledgeable and honest

Robert

31 years of experience
641 reviews
Robert
31 years of experience
Mercury Mountaineer V6-4.0L - Battery - San Jose, California
Robert has excellent communication skills and diagnosed the problem quickly. Very courteous.

Excellent Rating

(220)

Rating Summary
208
6
1
1
4
208
6
1
1
4
Number of Mercury Mountaineer services completed
2420+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercury MECHANICS
600+
experts on our platform

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