Mercedes-Benz GL550 Brake Light Switch Replacement Costs

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Brake Light Switch Replacement Service

How much does a Brake Light Switch Replacement cost?

On average, the cost for a Mercedes-Benz GL550 Brake Light Switch Replacement is $171 with $31 for parts and $140 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
2010 Mercedes-Benz GL550V8-5.5L	Service typeBrake Light Switch Replacement	Estimate$813.52	Shop/Dealer Price$984.45 - $1483.07
2016 Mercedes-Benz GL550V8-4.7L Turbo	Service typeBrake Light Switch Replacement	Estimate$208.93	Shop/Dealer Price$226.50 - $275.08
2013 Mercedes-Benz GL550V8-4.7L Turbo	Service typeBrake Light Switch Replacement	Estimate$208.93	Shop/Dealer Price$226.52 - $275.12
2014 Mercedes-Benz GL550V8-4.7L Turbo	Service typeBrake Light Switch Replacement	Estimate$208.93	Shop/Dealer Price$226.52 - $275.12
2012 Mercedes-Benz GL550V8-5.5L	Service typeBrake Light Switch Replacement	Estimate$804.51	Shop/Dealer Price$974.97 - $1473.23
2008 Mercedes-Benz GL550V8-5.5L	Service typeBrake Light Switch Replacement	Estimate$612.81	Shop/Dealer Price$733.01 - $1085.75
2015 Mercedes-Benz GL550V8-4.7L Turbo	Service typeBrake Light Switch Replacement	Estimate$208.93	Shop/Dealer Price$226.54 - $275.15
2009 Mercedes-Benz GL550V8-5.5L	Service typeBrake Light Switch Replacement	Estimate$804.51	Shop/Dealer Price$972.39 - $1468.72

Show example Mercedes-Benz GL550 Brake Light Switch Replacement prices

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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Jason

24 years of experience

190 reviews

Jason

24 years of experience

by Erminio

Mercedes-Benz GL550 V8-5.5L - Pre-purchase Car Inspection - Nashville, Tennessee

Jason did a great job with my pre-purchase inspection. He let me know when he was on his way, arrived on time, provided a detailed report, and answered any questions I had after the inspection was complete. I highly recommend Jason for anyone looking for a mobile mechanic to do a pre-purchase inspection.

Jason

33 years of experience

617 reviews

Jason

33 years of experience

by Rodolfo

Mercedes-Benz GL550 V8-5.5L - Car Starter Repair - Phoenix, Arizona

Great to have had Jason work on my GL550, he was very knowledgeable and accurate when taking care of the issue with the starter. Will work with Jason in the future for sure.

Jim

34 years of experience

225 reviews

Jim

34 years of experience

by Geoffrey

Mercedes-Benz GL550 V8-5.5L - Oil Change - Danville, California

Jim is nice and friendly

Chris

19 years of experience

600 reviews

Chris

19 years of experience

by Anthony

Mercedes-Benz GL550 V8-5.5L - Starter - Richardson, Texas

This guy is just excellent. He understands well what he’s doing. Would not hesitate to recommend him. I give him 6stars

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