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

Mercedes-Benz E-Class S211 W211 Low Tone Horn Signal Woofer Fanfare is a factory-original warning system component, designed specifically for the Mercedes E-Class W211/S211 generation models. This used low-tone horn ensures the correct sound profile, full compatibility with the electrical system, and consistency with the factory safety system. It is a practical solution for users who wish to maintain the original character of the acoustic signal in their Mercedes.

Specifications and technical data

• SKU: A0045429120-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0045429120
• Substitutable numbers: A 004 542 91 20, A0045429120, A 005 542 38 20, A0055423820, A 0045429120
• Color: Grey
• Category: Horns

Purpose and function of the low-tone horn

The low-tone horn in the Mercedes E-Class W211/S211 is responsible for generating the lower part of the acoustic signal, which, when combined with the high-tone horn, creates a clear, audible warning on the road. Using an original component from the same model line allows you to maintain:

• correct volume and sound characteristics,
• consistency with the vehicle's factory electrical system,
• appropriate operating parameters under road conditions. As a result, the signaling system remains functional and compliant with the manufacturer's specifications, which is important for both user comfort and safety.

Construction, color, and fitment for Mercedes E-Class W211/S211

The horn housing is finished in gray, which facilitates aesthetic integration with the engine bay and mounting elements. This type of finish is visually neutral and blends well with the factory brackets and covers in the Mercedes E-Class. The original design from the Horns group ensures correct mounting points and a compatible electrical connector, which translates into easier installation and reduces the risk of fitment issues. The component is designed to operate in typical engine bay environmental conditions.

Product condition and benefits of choosing a used original

The offered horn is in used condition, meaning it has been removed from a vehicle and was previously in service. This type of solution is often chosen by Mercedes owners who want to maintain the vehicle's original specifications while avoiding uncertain aftermarket replacements of inconsistent quality. In the case of components such as an acoustic signal, using an original part from the same brand and model series promotes stable operating parameters and proper cooperation with the vehicle's electrical installation and safety systems.

Why choose an original Mercedes horn

Choosing an original low-tone horn for the Mercedes-Benz E-Class W211/S211 is a solution that allows you to:

• maintain the factory characteristics of the warning signal,
• ensure compatibility with the electrical wiring and mounts,
• minimize the risk of installation and operational issues,
• maintain the technical consistency of the entire warning system. For users who value original Mercedes solutions, this is a practical way to restore full functionality to the signaling system after a failure or wear of the previous component. If you are planning a comprehensive repair or upgrade of the signaling area in your Mercedes and need other elements from the same group, such as high-tone horns, additional horns, or mounting hardware, check out the available parts in the Mercedes Horns category.

Additional information and technical knowledge

When selecting electrical components and accessories for the starting and charging system, it is worth noting the differences between original used parts and budget-friendly refurbished solutions. You can find more on this topic in the article Starting system failure – why a used original alternator or starter often outperforms refurbishment, which discusses the practical aspects of durability and reliability of such components.