Mercedes S212 Roof Curtain Touring Head Airbag Left N/S A2128604702

The Mercedes S212 Touring left side roof airbag curtain is an original safety component designed for installation on the driver's side in a station wagon body. As part of the Airbags group, it is responsible for protecting the heads and upper torsos of passengers during side impacts and rollovers. A used OEM component allows for a technically correct repair of the passive safety system while maintaining Mercedes' original design concept.

Specifications and technical data

• SKU: A2128604702
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2128604702
• Substitutable numbers: A2128604702, A 212 860 47 02, KD
• Location on the vehicle: Left
• Category: Airbags

Purpose and Function in the Vehicle

The presented roof curtain has been specifically designed for the S212 series Touring body type and is installed on the left side of the vehicle. It works in conjunction with the factory SRS system controller, forming a cohesive side protection system with other airbags. Its function is to deploy rapidly along the upper edge of the cabin, reducing the risk of head contact with the side window, pillars, and body components.

Construction and Integration with the SRS System

The roof curtain is a cassette-type component, mounted within the headliner and pillars on the left side. The design includes:

• precise guidance along the roofline,
• an integrated gas generator that works with the SRS installation,
• mounting points matched to the factory mounting holes in the S212 body.

This configuration ensures the correct positioning of the curtain after activation and compatibility with original interior trim elements. This maintains the structural and aesthetic integrity of the cabin after proper installation.

Benefits of Using an Original Roof Curtain

Using an original left-side roof curtain in the Mercedes S212 allows for the maintenance of safety parameters as intended by the manufacturer. Key benefits include:

• factory fit to the geometry of the roof and pillars on the driver's side,
• correct cooperation with the existing wiring harness and SRS controller,
• preservation of the manufacturer's intended head protection zone for passengers,
• the ability to restore full functionality of the airbag system after a side collision.

A used OEM part is a good solution for professional post-accident repairs when the priority is to technically restore the passive safety system without altering its structure.

Condition, Installation, and Service Recommendations

The curtain is offered as a used part, intended for installation in place of a damaged component on the left side of the vehicle. Installation by a specialized service center experienced with SRS systems, possessing the appropriate tools and diagnostic procedures, is recommended. After installation, a full diagnostic of the airbag system should be performed, and any errors in the controller should be cleared.

Related Items from the Mercedes Airbags Group

If you are planning a comprehensive repair or upgrade of the passive safety zone in your Mercedes and need other components from the same group, such as side curtains, steering wheel airbags, or passenger airbags, check the available parts in the Mercedes Airbags category.

For users interested in the broader context of using salvaged parts in modern cars, including advanced electronic systems, an article describing a practical approach to repairing BMW iDrive systems and electronic modules may be helpful – you can find it here: how to care for BMW iDrive systems and electronic modules using salvaged parts.