Horn Signal Mercedes W213 C238 Alarm Siren Low Tone A2135422700

Horn Signal Mercedes W213 C238 Alarm Siren Low Tone is an original, low-tone alarm siren from the Horns category, designed for Mercedes E-Class W213 and C238 coupe models. This used OEM part ensures proper alarm sound and consistency with the factory security system, leading to stable electrical system operation. It's a solution for users who expect compliance with factory specifications and predictable installation.

Specifications and technical data

• SKU: A2135422700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2135422700
• Substitutable numbers: A2135422700, A 213 542 27 00
• Category: Horns

Application and Function in the Vehicle

The presented alarm siren is responsible for generating a low alarm tone, working in conjunction with the Mercedes factory vehicle security system. A correctly chosen alarm horn is crucial for:

• a clear, distinctive warning sound,
• maintaining compatibility with factory controller settings,
• avoiding errors in the comfort and alarm system after component replacement.

Thanks to its OEM construction, the alarm siren maintains appropriate acoustic and electrical parameters, facilitating integration with the existing wiring harness and body modules.

Construction and Technical Characteristics of the Horn

This component belongs to the Horns category, meaning it is specifically designed to generate warning signals in a vehicle. The low-tone version works with the alarm system, ensuring:

• stable operation under typical passenger car operating conditions,
• appropriately selected sound volume and frequency,
• compatibility with factory brackets and mounting points in the body.

Its original origin from the Mercedes brand promotes proper fit with the electrical system and reduces the risk of installation problems compared to universal aftermarket parts.

Benefits of Choosing an Original Alarm Horn

Choosing a used, original alarm siren for the Mercedes E-Class W213 / C238 is a solution that allows for cost control while maintaining the factory logic of the system's operation. The most significant advantages include:

• Full integration with vehicle electronics – the siren works with control modules designed for a specific type of horn.
• Factory alarm sound – maintaining the characteristic sound to which the Mercedes security system is tuned.
• Predictable installation – OEM construction facilitates installation in place of the original component, without the need for wiring modifications.

For users who value the consistent operation of comfort and safety systems, using an original alarm horn is a technically sound solution.

Part Selection and Integration with Other Mercedes Systems

To correctly select the alarm siren for a specific equipment version, it's worth paying attention to compatibility with the W213 / C238 platform and the type of alarm system installed in the vehicle. A used OEM part allows for:

• consistency with factory wiring harnesses,
• proper cooperation with sensors and body modules,
• appropriate response of the alarm system to breaches of vehicle protection zones.

If you are interested in other parts from the horns category dedicated to this brand, check the available parts in the Mercedes Horns category.

Technical Support and Knowledge of Mercedes Systems

When planning work on security systems and powertrains in premium vehicles, it's advisable to use reliable sources of knowledge. If you want to better understand how powertrains, electronics, and accessory components work together in vehicles of this brand, check out the article xDrive, 4Matic, quattro, or 4Motion – comparison of AWD drives from BMW, Mercedes, Audi, and VW, which discusses practical aspects of operating and servicing advanced systems.