Mercedes-Benz S430 Brake Light Switch Replacement at your home or office.

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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 S430 Brake Light Switch Replacement is $129 with $34 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2003 Mercedes-Benz S430V8-4.3LService typeBrake Light Switch ReplacementEstimate$182.07Shop/Dealer Price$216.34 - $279.78
2005 Mercedes-Benz S430V8-4.3LService typeBrake Light Switch ReplacementEstimate$162.07Shop/Dealer Price$196.37 - $259.83
2004 Mercedes-Benz S430V8-4.3LService typeBrake Light Switch ReplacementEstimate$162.07Shop/Dealer Price$196.37 - $259.83
2001 Mercedes-Benz S430V8-4.3LService typeBrake Light Switch ReplacementEstimate$162.07Shop/Dealer Price$196.33 - $259.76
2000 Mercedes-Benz S430V8-4.3LService typeBrake Light Switch ReplacementEstimate$162.07Shop/Dealer Price$196.40 - $259.88
2006 Mercedes-Benz S430V8-4.3LService typeBrake Light Switch ReplacementEstimate$162.07Shop/Dealer Price$196.37 - $259.83
2002 Mercedes-Benz S430V8-4.3LService typeBrake Light Switch ReplacementEstimate$167.07Shop/Dealer Price$201.13 - $264.41
Show example Mercedes-Benz S430 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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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(81)

Rating Summary
77
2
1
0
1
77
2
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1

Leo

41 years of experience
74 reviews
Leo
41 years of experience
Mercedes-Benz S430 V8-4.3L - Check Engine Light is on - Livermore, California
He is smart, good service ...thumb up for Leo

Shawn

23 years of experience
158 reviews
Shawn
23 years of experience
Mercedes-Benz S430 V8-4.3L - Electrical components are not working Inspection - Hampton, Virginia
Great ,Professional and know what he was doing.

Chris

22 years of experience
2223 reviews
Chris
22 years of experience
Mercedes-Benz S430 V8-4.3L - Check Engine Light is on - Irvine, California
I have booked with Chris twice in two months. He was prompt, knowledgeable and efficient at what he does. He diagnosed and fixed my problems right the first time! He is my go-to mechanics from now on!

Will

12 years of experience
49 reviews
Will
12 years of experience
Mercedes-Benz S430 V8-4.3L - Oil Change - Phoenix, Arizona
Was on time, got everything done the way you expect everything to be done and made sure everything that needed to be done at a later time was explained as much as needed. If I continue on with this website, I will definitely go with Will.

Excellent Rating

(81)

Rating Summary
77
2
1
0
1
77
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1
Number of Mercedes-Benz S430 services completed
891+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

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