What is the construction and purpose of horns?

Horns are electric signal elements mounted in a car, most often in the front part of the body. A typical horn consists of a housing, a diaphragm, working contacts, a bracket, and an electrical connector. Its task is to generate a clear acoustic signal when the driver presses the button. Depending on the vehicle version, it may appear as a single signal or a set of two tones.

What are horns used for?

Horns are used to warn other road users and transmit a short acoustic signal in traffic situations. A functional sound signal system increases safety because it allows for a quick reaction when a light signal or the vehicle's presence alone is insufficient. This component works with the steering wheel button, relay, and fuse, so its operation also depends on the state of the electrical system. A malfunction may mean either a failure of the horn itself or a problem in the control circuit.

What is the construction and function of a horn mount?

A horn mount is an element connecting the sound signal to the vehicle structure at a designated mounting point. It serves to stably seat the housing, limit vibrations, and maintain the correct position relative to covers and wires. In practice, its shape, mounting hole, and bracket length may differ depending on the car model. A damaged or corroded mount can cause looseness, noise, and problems with proper part installation.

How to select a horn for a specific car?

It is safest to compare the OEM part number, interchangeable numbers, connector type, and mounting method. It is also worth checking whether the car has a single-tone or dual-tone system and whether the part fits the pre-facelift or post-facelift version. If horns appear in pairs, it is good to also verify the mounting side and the completeness of the brackets.

What symptoms indicate a problem with the horn or installation?

The most common symptoms are no reaction after pressing the button, a quiet signal, intermittent operation, or a distorted tone. Such symptoms may result from a damaged diaphragm, connector corrosion, a broken wire, or a faulty relay. In diagnostics, it is also worth checking the fuse and the condition of the ground point.

How to take care of horns after installation?

After installation, it is worth periodically checking the cleanliness of the housing, the condition of the plug, and the security of the mounting. A horn operating in a zone exposed to water and dirt should be checked during front-end inspections and after body repairs. A quick reaction to a weakening signal allows you to avoid further damage to contacts and brackets.

Horns

At the Global Parts automotive store, we offer a wide selection of original used car parts, including horns for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen and others. The horns we offer undergo quality control so that you can be sure that you are receiving a top-class product.

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Mercedes GLE C292 ML W166 Horn Tweeter Horn Signal 510Hz Fanfare A0075425320

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Mercedes GLE C292 ML W166 Horn Low Tone Signal 420Hz Fanfare A0075425420

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Mercedes W204 Anti-Theft Alarm Siren Horn Signal Bracket Holder A2045456740

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Mercedes W166 High Tone Tweeter Horn Signal Fanfare Alarm 510Hz A0065427720

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Mercedes W639 W903 Tone Horn Signal Fanfare A6395400076

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Mercedes ML W163 Anti Theft Alarm Siren Horn Signal A1635420120

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Horn Signal Mercedes W169 W202 W203 ML W164 Fanfare Right O/S A0065429020

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Mercedes W169 Alarm Siren Trumpet Horn Signal A0048201826

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Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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Mercedes W176 W205 W207 W213 Anti-Theft Alarm Siren Horn Signal A2138201101

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Mercedes-Benz E-Class W210 Horn Signal Fanfare High Tone 500Hz A0045429020

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Mercedes-Benz S W220 Front Right Seat Safety Belt Buckle Tensioner A2208601869

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Mercedes W213 C238 Horn Signal Alarm Siren High Tone Left N/S A2135422800

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Horn Signal Mercedes W204 W212 Fanfare High Tone 500Hz A0075426920

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Mercedes S211 W211 High Tone Horn Signal Tweeter Fanfare A0045429220

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Horn Signal Mercedes W156 W176 W246 Fanfare Siren 500Hz Right O/S A0005405700

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Mercedes-Benz CLK-Class W208 Horn Signal Fanfare Low Tone 420Hz A0045427820

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Mercedes W245 Horn Signal Woofer Fanfare A0065421720

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Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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Mercedes SLK R172 Roadster Front Left N/S Horn Signal 510 Hz A0005428804

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Mercedes-Benz E-Class W211 Rear Left N/S Seat Belt Buckle A2118600169

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Part no. A2075421720

Mercedes C207 Coupe Horn Signal Fanfare 420Hz Front Right O/S A2075421720

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Part no. A0005401910

Horn Signal Mercedes W117 W176 W246 Fanfare Siren Left N/S A0005406003

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Mercedes-Benz C CLK W203 W209 1 Anti-Theft Alarm Siren Horn Signal A2038203826

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Part no. A0005428904

Mercedes SLK R172 Roadster Front Right O/S Horn Signal 420 Hz A0005428904

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Mercedes W204 Anti-Theft Alarm Siren Horn Signal Bracket Holder A2045456740

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Part no. A2038600269

Mercedes-Benz C W203 Rear Right Centre Seat Belt Buckle Tensioner A2038600269

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Mercedes X253 Alarm Siren Horn Signal Low Tone Sound Left N/S 510Hz A2535422200

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Mercedes W204 W212 Horn Signal Fanfare A0065421520

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Mercedes-Benz S211 W211 Front Left Right Seat Safety Belt Buckle A2118603369

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Mercedes W221 Fanfare 510Hz Front Left N/S Horn Sound Signal A0065420820

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Horn Signal Mercedes W212 E63 AMG Fanfare High Tone Horn Signal A2215420120

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Horn Mercedes-Benz C CLK S Class C209 W203 W220 Signal Fanfare A0045428120

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Mercedes-Benz CL S Class C215 W220 Horn Signal Fanfare Right O/S A0045428020

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Mercedes-Benz E-Class S211 W211 Low Tone Horn Signal Woofer Fanfare A0045429120

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Part no. A2118213058

Mercedes-Benz E-Class S211 W211 Parktronic Bumper Parking Sensor A2118213058

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Part no. A2208601769-1

Mercedes-Benz S W220 1 Front Left Seat Safety Belt Buckle Tensioner A2208601769

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Horn Signal Mercedes W204 W212 Fanfare Sound Alarm High Tone Siren A0055427920

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Horn Signal Mercedes W203 W219 W229 Fanfare High Tone 510Hz A0055426620

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Mercedes-Benz C W203 1 Rear Right Centre Seat Belt Buckle Tensioner A2038600269

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Mercedes-Benz S-Class W221 Anti-Theft Alarm Siren Horn Signal A2218208526

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Mercedes S211 W211 Tone Horn Signal Woofer 420Hz Left N/S A0055426720

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Mercedes CL C118 W177 Anti Theft Alarm Siren Horn Signal Fanfare A2239005936

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Mercedes S211 W211 Front Horn Signal Fanfare Tone 420Hz A0055422520

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Horn Mercedes W210 Horn Signal Fanfare Low Tone 400Hz A0045428720

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