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

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Brake Light Switch Replacement Estimate for Mercury Mariner

Mercury Mariner Brake Light Switch Replacement costs $124 on average.

CarServiceEstimateShop/Dealer Price
2005 Mercury MarinerL4-2.3LService typeBrake Light Switch ReplacementEstimate$131.43Shop/Dealer Price$151.69 - $184.57
2008 Mercury MarinerL4-2.3L HybridService typeBrake Light Switch ReplacementEstimate$111.43Shop/Dealer Price$131.71 - $164.60
2011 Mercury MarinerL4-2.5LService typeBrake Light Switch ReplacementEstimate$186.87Shop/Dealer Price$226.01 - $315.48
2009 Mercury MarinerL4-2.5L HybridService typeBrake Light Switch ReplacementEstimate$186.87Shop/Dealer Price$225.99 - $315.44
2010 Mercury MarinerV6-3.0LService typeBrake Light Switch ReplacementEstimate$186.87Shop/Dealer Price$226.02 - $315.51
2011 Mercury MarinerL4-2.5L HybridService typeBrake Light Switch ReplacementEstimate$186.87Shop/Dealer Price$226.01 - $315.48
2009 Mercury MarinerV6-3.0LService typeBrake Light Switch ReplacementEstimate$191.87Shop/Dealer Price$230.87 - $320.24
2008 Mercury MarinerL4-2.3LService typeBrake Light Switch ReplacementEstimate$116.43Shop/Dealer Price$136.94 - $170.02
Show example Mercury Mariner 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

(156)

Rating Summary
147
7
1
0
1
147
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John

27 years of experience
971 reviews
John
27 years of experience
Mercury Mariner L4-2.5L Hybrid - Window Motor / Regulator Assembly Replacement (Driver Side Rear) - Manvel, Texas
Fantastic! John was early, quick and thorough. He explained the problem in understandable detail and recommended ways to prevent the same problem from happening again soon. Very personable and professional. I will definitely book John and use your service again. It was effortless! What a great find!!

Manuel

32 years of experience
554 reviews
Manuel
32 years of experience
Mercury Mariner L4-2.3L Hybrid - Car is not starting - Irvine, California
Manual arrived as scheduled. He was able to diagnose the problem with my hybrid car. By providing me with the failure codes, he has enabled me to arrange for battery replacement under warranty. This fully met my need and expectations.

Jerry

8 years of experience
136 reviews
Jerry
8 years of experience
Mercury Mariner V6-3.0L - Bleed Brakes - Flowery Branch, Georgia
Great guy. Very experienced got what needed and gave is some other recommendations. Very happy with Jerry's work.

Richard

11 years of experience
265 reviews
Richard
11 years of experience
Mercury Mariner V6-3.0L - Brake Pads Replacement (Front) - Brentwood, Tennessee
My appointment with Richard was at 2 and he was here right at 2. Richard came to my office, so all I had to do was walk out and hand him my keys to test my breaks. About 30 minutes later, Richard called to tell me that he had come with the wrong break pads and would be back with the correct pads shortly. Roughly an hour later, he called me back to let me know that he was done with the job. I walked out of my office and he gave me some recommendations for what I need to look in to replacing. Richard was incredibly fancy and I will absolutely be using in the future.

Excellent Rating

(156)

Rating Summary
147
7
1
0
1
147
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1
Number of Mercury Mariner services completed
1716+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercury MECHANICS
600+
experts on our platform

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