Mercedes R171 W203 Steering Wheel Air Module Black A0008605402

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes R171 W203 Steering Wheel Air Module is an original safety component designed for the steering system of selected Mercedes models. This used, black steering wheel airbag from the Steering wheels and horn buttons category allows for professional repair after an airbag deployment or the replacement of a damaged module, while maintaining the factory safety concept and interior aesthetics.

Specifications and technical data

• SKU: A0008605402
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0008605402
• Substitutable numbers: A0008605402, A 000 860 54 02
• Color: Black
• Category: Steering Wheels & Horn Buttons

Purpose and function in the steering system

The steering wheel airbag is a key passive safety element that works in conjunction with collision sensors and the SRS system controller. In the event of a collision, it is responsible for the rapid deployment of the airbag within the steering wheel, reducing the risk of injury to the driver. Using an original airbag in a Mercedes allows for the maintenance of proper system operating parameters, including reaction time, inflation volume, and correct positioning relative to the steering wheel and steering column.

This component is integrally linked to the steering wheel structure – its shape, mounting points, and geometry have been designed specifically for a given type of rim and horn button module. Thanks to this, the installation process is predictable, and the entire system maintains mechanical and visual consistency.

Construction, color scheme, and visual fit

The black color of the steering wheel airbag ensures a neutral, universal fit for most factory Mercedes interiors, which are dominated by dark tones. This color facilitates aesthetic integration with the dashboard, steering column covers, and instrument cluster without the need for additional stylistic modifications.

The front of the airbag is adapted to work with horn buttons compatible with the specific steering wheel, which allows for full functionality of the horn control. The airbag construction is optimized for the correct direction of deployment, so that when the system is activated, the energy is distributed in a controlled and predictable manner.

Benefits of using an original steering wheel airbag

Using an original steering wheel airbag in a Mercedes brings a number of practical technical benefits:

• maintaining the factory characteristics of the SRS system within the steering wheel,
• secure fit to the structure of the rim and horn button module,
• consistent interior appearance thanks to the black, neutral color scheme,
• possibility of professional repair after an airbag deployment without interfering with the steering system design.

For workshops and users, this means predictable installation, reduced risk of compatibility issues, and easier diagnostics of potential faults in the future. A used OEM component also allows for the optimization of repair costs while maintaining a high level of safety.

Installation and service aspects

During the installation of a steering wheel airbag in a Mercedes, it is crucial to follow procedures regarding pyrotechnic systems: disconnecting the power supply, discharging the installation, correct wiring connection, and checking for errors in the SRS controller after the work is completed. Proper seating of the airbag in the steering wheel rim ensures mechanical stability and correct operation of the horn buttons.

Due to the nature of the component, it is recommended that installation and diagnostics be performed by a service center with experience in safety systems for Mercedes vehicles. This helps to limit the risk of system malfunction, errors in the controller memory, or improper fitting of elements within the steering wheel area.

More solutions for the Mercedes steering system

If you want to better understand how the steering system and power steering work in your car, what the typical symptoms of failure are, and how to choose used components such as steering wheels or columns, check out our practical guide: Steering system and power steering – how it works and what breaks?.

If you are planning a comprehensive repair or upgrade of the steering zone in your Mercedes and need other components from the same group, such as steering wheel rims, horn button modules, or additional covers, check out the available parts in the Mercedes steering wheels and horn buttons category.