Mercedes-Benz 450SL Brake Light Switch Replacement at your home or office.

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Average rating from customers who
received a Brake Light Switch Replacement.
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$117.11 - $127.11

Price range for all vehicles


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Average rating from customers who
received a Brake Light Switch Replacement.
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Brake Light Switch Replacement Estimate for Mercedes-Benz 450SL

Mercedes-Benz 450SL Brake Light Switch Replacement costs $122 on average.

CarServiceEstimateShop/Dealer Price
1975 Mercedes-Benz 450SLV8-4.5LService typeBrake Light Switch ReplacementEstimate$159.23Shop/Dealer Price$198.41 - $269.55
1979 Mercedes-Benz 450SLV8-4.5LService typeBrake Light Switch ReplacementEstimate$159.23Shop/Dealer Price$198.51 - $269.73
1976 Mercedes-Benz 450SLV8-4.5LService typeBrake Light Switch ReplacementEstimate$164.23Shop/Dealer Price$202.25 - $272.53
1980 Mercedes-Benz 450SLV8-4.5LService typeBrake Light Switch ReplacementEstimate$159.23Shop/Dealer Price$201.45 - $274.88
1977 Mercedes-Benz 450SLV8-4.5LService typeBrake Light Switch ReplacementEstimate$159.23Shop/Dealer Price$196.37 - $265.99
1978 Mercedes-Benz 450SLV8-4.5LService typeBrake Light Switch ReplacementEstimate$159.23Shop/Dealer Price$192.99 - $260.07
1973 Mercedes-Benz 450SLV8-4.5LService typeBrake Light Switch ReplacementEstimate$164.23Shop/Dealer Price$201.00 - $270.33
1974 Mercedes-Benz 450SLV8-4.5LService typeBrake Light Switch ReplacementEstimate$154.23Shop/Dealer Price$192.03 - $262.14
Show example Mercedes-Benz 450SL 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 Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating


YourMechanic Mercedes-Benz 450SL Service

Average Rating

4.6/5

Number of Reviews

10

Rating Summary
9
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1
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1

Victor

9 years of experience
195 reviews
Victor
9 years of experience
Mercedes-Benz 450SL - Starter - Virginia Beach, Virginia
Victor did a great job installing a starter on my 74 Mercedes 450SL and installing a transmission filter. Very thorough and didn't charge me for unnecessary parts. Will hire again.

Napoleon

25 years of experience
147 reviews
Napoleon
25 years of experience
Mercedes-Benz 450SL - Car idle is rough - Inglewood, California
Napoleon arrived early and was very knowledgeable and provided some great advice as to what to do next. Thank you for your exemplary customer service and attitude Napoleon.

Frank

13 years of experience
31 reviews
Frank
13 years of experience
Mercedes-Benz 450SL - Brake Master Cylinder - Downers Grove, Illinois
he was on time ,polite ,professional.did the work quickly .work was done correctly..my car is difficult to work on.small car with no room to maneuver but he was able to get inside and get it done.

Khoa

18 years of experience
360 reviews
Khoa
18 years of experience
Mercedes-Benz 450SL - Fan Belt - San Jose, California
He did a good job. I'll referr my friends and customers to Your Mechanic.

Excellent Rating


YourMechanic Mercedes-Benz 450SL Service

Average Rating

4.6/5

Number of Reviews

10

Rating Summary
9
0
0
0
1
9
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1
Red-stars EXCELLENT RATING ON
Number of Mercedes-Benz 450SL services completed
110+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
800+
experts on our platform

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