Mercedes-Benz 400SE 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 400SE Horn Relay Replacement is $103 with $8 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1992 Mercedes-Benz 400SEV8-4.2LService typeHorn Relay ReplacementEstimate$130.07Shop/Dealer Price$151.34 - $175.78
Show example Mercedes-Benz 400SE 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

(5,730)

Rating Summary
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5,332
192
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Maxwell

18 years of experience
390 reviews
Maxwell
18 years of experience
Mercedes-Benz C230 V6-2.5L - Canister Purge Solenoid - Spring, Texas
Maxwells is very knowledgeable about his job. He’s very easy to work with an a great talker lol.

Brikk

18 years of experience
389 reviews
Brikk
18 years of experience
Mercedes-Benz C230 V6-2.5L - Oil Change - Matthews, North Carolina
Prompt and professional. Explained what was going on and what he was going to try and what the plan B was if plan A didn't resolve my issue. Highly recommended.

Jerimiah

19 years of experience
328 reviews
Jerimiah
19 years of experience
Mercedes-Benz CL55 AMG V8-5.5L - Camshaft Position Sensor - Las Vegas, Nevada
A little bit tricky but he stuck with it and got it done

Ian

15 years of experience
133 reviews
Ian
15 years of experience
Mercedes-Benz ML430 V8-4.3L - Serpentine/Drive Belt - Seattle, Washington
Ian was great. He arrived on-time...actually, he called and said he could be there early if I was available, which was very nice. He not only fixed the broken belt, but took the effort to diagnose the cause of the problem. He was courteous and knowledgeable and I will request him the next time I need any work done on my car.

Excellent Rating

(5,730)

Rating Summary
5,332
192
54
29
123
5,332
192
54
29
123
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