Mercedes-Benz 300SD Horn Relay Replacement Costs

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Horn Relay Replacement Service

How much does a Horn Relay Replacement cost?

On average, the cost for a Mercedes-Benz 300SD Horn Relay Replacement is $107 with $12 for parts and $95 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1978 Mercedes-Benz 300SDL5-3.0L Turbo Diesel	Service typeHorn Relay Replacement	Estimate$139.77	Shop/Dealer Price$163.47 - $195.18
1979 Mercedes-Benz 300SDL5-3.0L Turbo Diesel	Service typeHorn Relay Replacement	Estimate$119.77	Shop/Dealer Price$143.50 - $175.23
1985 Mercedes-Benz 300SDL5-3.0L Turbo Diesel	Service typeHorn Relay Replacement	Estimate$119.77	Shop/Dealer Price$143.50 - $175.23
1983 Mercedes-Benz 300SDL5-3.0L Turbo Diesel	Service typeHorn Relay Replacement	Estimate$119.77	Shop/Dealer Price$143.46 - $175.16
1980 Mercedes-Benz 300SDL5-3.0L Turbo Diesel	Service typeHorn Relay Replacement	Estimate$119.77	Shop/Dealer Price$143.52 - $175.28
1984 Mercedes-Benz 300SDL5-3.0L Turbo Diesel	Service typeHorn Relay Replacement	Estimate$119.77	Shop/Dealer Price$143.50 - $175.23
1992 Mercedes-Benz 300SDL6-3.4L Turbo Diesel	Service typeHorn Relay Replacement	Estimate$124.09	Shop/Dealer Price$147.41 - $178.45
1981 Mercedes-Benz 300SDL5-3.0L Turbo Diesel	Service typeHorn Relay Replacement	Estimate$124.77	Shop/Dealer Price$148.91 - $180.95

Show example Mercedes-Benz 300SD 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

(7)

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Trevor

22 years of experience

185 reviews

Trevor

22 years of experience

by Bill

Mercedes-Benz 300SD L5-3.0L Turbo Diesel - Alternator Belt - Encinitas, California

Trevor showed up on time and had the work completed within the estimated time. Professional and friendly. I highly recommend Your Mechanic and Trevor. This was so easy, no up charges or surprises. I will use Your Mechanic for future auto services.

Bacle

17 years of experience

60 reviews

Bacle

17 years of experience

by Kamsik

Mercedes-Benz 300SD L5-3.0L Turbo Diesel - Brake Pads Replacement (Front) - Mountain View, California

He will fix your problem no matter how much time it takes.

Robert

31 years of experience

641 reviews

Robert

31 years of experience

by Kamsik

Mercedes-Benz 300SD L5-3.0L Turbo Diesel - Noise from engine or exhaust - Mountain View, California

Robert is good or even better than the other reviews. He does not only solve your problem but he ensures that your car is at its best before he leaves. He tries very hard to make your car perfect. When parts are not available he will try to make it. I regret very much not to hive him a tip when he left. It seems that Robert has a very busy schedule. Perhaps, his devotion to perfection takes extra time and make him a little bit late on schedule.

Jim

33 years of experience

189 reviews

Jim

33 years of experience

by Prakash

Mercedes-Benz 300SD L5-3.0L Turbo Diesel - Coolant is leaking - San Ramon, California

Identified the problem immmediately

Excellent Rating

(7)

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