Mercedes-Benz 400SEL Horn Relay Replacement at your home or office.

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Horn Relay Replacement Service

How much does a Horn Relay Replacement cost?

On average, the cost for a Mercedes-Benz 400SEL Horn Relay Replacement is $103 with $8 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1993 Mercedes-Benz 400SELV8-4.2LService typeHorn Relay ReplacementEstimate$130.07Shop/Dealer Price$151.34 - $175.78
Show example Mercedes-Benz 400SEL Horn Relay Replacement prices

What is the Horn Relay all about?

The horn relay attaches a low power circuit to an electromagnet, which operates a mechanical switch. That switch either opens or closes a circuit that carries a higher power, which causes the horn to sound. There is a low power circuit running to your car’s steering wheel, and when it is activated, the horn sounds. When you release the horn button, the low power circuit is opened and the power level of the relay drops, silencing the horn.

Keep in mind:

  • You are required by law to have a working horn in your car.
  • Your car horn is a safety mechanism that allows you to warn other drivers of potential danger.

How it's done:

  • The vehicle battery is disconnected
  • The horn relay position is identified
  • The new horn relay and wiring are installed
  • The battery is reconnected
  • The repair is verified and the vehicle horn is tested for proper operation

Our recommendation:

If your horn isn’t working properly, you have no way of alerting another driver that he or she is about to collide with your vehicle, and you have no way of telling other drivers of any dangers further down the road. Our expert mechanics can diagnose any problems with your car horn, and if necessary, can replace the horn relay for you.

What common symptoms indicate you may need to replace the Horn Relay?

  • You press the horn button and nothing happens
  • You press the horn button but all you hear is a click
  • Horn only works sometimes

How important is this service?

Your horn is your first line of defense when it comes to problems in traffic. With an inoperable horn relay, your horn won’t work at all. If your horn isn’t working properly, get one of our expert mechanics to immediately correct the problem.

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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(5,576)

Rating Summary
5,188
189
54
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5,188
189
54
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117

Attila

19 years of experience
917 reviews
Attila
19 years of experience
Mercedes-Benz 400SEL V8-4.2L - Car starts and then dies - Union, New Jersey
First his did great job and finally he said the issue was ignition coil.

Lucas

21 years of experience
887 reviews
Lucas
21 years of experience
Mercedes-Benz E350 V6-3.5L - Oil Change - Los Angeles, California
Lucas is a great mechanic who is knowledgeable and professional. Highly recommend.

Stacy

24 years of experience
366 reviews
Stacy
24 years of experience
Mercedes-Benz E350 V6-3.5L - Serpentine/Drive Belt - Morrow, Georgia
Great Experience. Was Early for appt and I can appreciate that. Knowledgeable and Honest. Thank you!

Chris

23 years of experience
17 reviews
Chris
23 years of experience
Mercedes-Benz SLK230 L4-2.3L Turbo - Car Inspection - Valley Village, California
Chris is an excellent mechanic and very friendly he knows what he is doing and how to do any technical research necessary to complete the job. Fully satisfied with him as a very competent mechanic and person.

Excellent Rating

(5,576)

Rating Summary
5,188
189
54
28
117
5,188
189
54
28
117
Number of Mercedes-Benz services completed
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services done by our mechanics
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