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 component of the acoustic signaling system, designed specifically for the E-Class W211/S211 series models. The grey housing combined with the low-tone sound characteristic provides a clear, highly audible warning signal, consistent with factory Mercedes standards. It is a practical solution for users who want to restore the full functionality of the acoustic system without interfering with the vehicle's electrical installation.

Specifications and technical data

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

Purpose and function of the low-tone horn

Mercedes-Benz E-Class S211 W211 Low Tone Horn Signal Woofer Fanfare is responsible for generating the lower part of the sound signal, typical of the factory warning sound in these models. The low-tone characteristic improves signal clarity in urban traffic and on the road, making it easier to quickly draw the attention of other road users. This component works with the vehicle's electrical system in accordance with the manufacturer's original specifications.

Construction and technical features

The horn belongs to the Horns category and has been prepared as a component mounted in the front compartment of the vehicle. The grey finish of the housing facilitates aesthetic integration with the car's technical environment, remaining unobtrusive after installation. The design is intended for operation in conditions typical of the front compartment – subject to variable temperatures and exposure to moisture and road debris.

As a Mercedes brand product, the horn maintains the factory geometry of the mounts and the electrical connector, which promotes precise fitting to the brackets and wiring harness in S211 and W211 models. This allows for the preservation of the original acoustic characteristics and proper cooperation with the factory horn button on the steering wheel.

Condition, fitment, and service application

The offered item is in used condition, which allows for an economical replacement of a damaged or non-functional horn while maintaining factory performance specifications. This solution is particularly beneficial for maintenance repairs where the priority is to restore the full functionality of the acoustic signaling system at controlled service costs.

In workshop practice, the low-tone horn is used both for typical replacement of a damaged component and for diagnosing sound signal issues when it is necessary to restore the original system configuration. Using a factory component reduces the risk of malfunction, excessively loud or unnatural sound, and electrical compatibility problems.

Benefits of using an original Mercedes horn

Choosing a low-tone horn dedicated to the S211/W211 allows for maintaining acoustic and technical consistency with other vehicle components. The main advantages include:

• factory fitment to brackets and electrical wiring in E-Class W211/S211 series models,
• preservation of the characteristic low-tone warning sound,
• reduction of the need for installation modifications during assembly,
• possibility of use in repairs restoring the vehicle to its original state.

Additional information and related products

If you are planning a comprehensive repair or upgrade of the front area of your Mercedes and need other elements from the same group, such as high-tone horns, additional sirens, or signal control modules, check the available parts in the Mercedes Horns category.

If you are considering a wider modernization of the vehicle – including improving interior comfort and selecting used equipment components – practical tips on choosing parts, their installation, and fitment can be found in the article Premium interior for half the price: second-hand seats, steering wheels, and multimedia.