Mercedes-Benz C CLK W203 C209 Airbag Air Bag Crash Sensor Module A0018204426

Description

MERCEDES C CLK W203 C209 airbag impact sensor is a specialized component of the passive safety system, responsible for precisely detecting a collision and transmitting a signal to the airbag control unit. The offered component comes from the Mercedes range, ensuring a factory fit to the body structure and electrical system. A used part allows for a technically correct repair of the airbag system while maintaining a favorable cost-to-quality ratio.

Specifications and technical data

• SKU: A0018204426
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0018204426
• Substitutable numbers: A0018204426, A 001 820 44 26, EM
• Category: Other Interior Parts & Accessories

Function and Role of the Airbag Impact Sensor

The impact sensor in Mercedes C-Class W203 and CLK C209 models plays a crucial role in the airbag deployment sequence. It is responsible for:

• registering rapid deceleration during a collision,
• transmitting a signal to the SRS system control unit,
• cooperating with other sensors and seatbelt pretensioners,
• maintaining the integrity of the safety logic designed by the manufacturer.

Thanks to this, the airbag system can deploy in a controlled manner, in accordance with factory algorithms, which is important for both the protection of the driver and passengers, as well as for later system diagnostics.

Compatibility with Mercedes C W203 and CLK C209

The presented sensor has been designed with the body architecture and electrical system of the C W203 and CLK C209 series in mind. This means:

• maintaining original mounting points in the body structure,
• compatibility with the wiring harness and connector type used in these generations,
• cooperation with the factory airbag system control unit.

Selecting a component from the same design family minimizes the risk of installation errors and communication problems within the vehicle’s bus system.

Characteristics of the Used Part

The offered airbag impact sensor is a used part, which in practice allows for an economical repair of the safety system while maintaining the original manufacturer’s specifications. Such components are often chosen for:

• post-accident repairs,
• clearing SRS system errors after replacing body parts,
• restoring full airbag system functionality after airbag deployment.

Choosing an original, used sensor from the Mercedes range reduces the need for adaptation and additional installation modifications.

Installation and Operational Guidelines

Due to the nature of a safety component, the installation of the airbag impact sensor should be performed by someone experienced with SRS systems. In practice, this means the necessity of:

• disconnecting the vehicle’s power supply before starting work,
• applying the correct torque to the mounting point,
• checking the correct connection of the electrical connector,
• performing a computer diagnostic scan after installation to verify for errors.

A correctly installed sensor cooperates with other system components, ensuring consistent operation of the airbag system according to the manufacturer’s design.

Expansion and Selection of Other Mercedes Safety System Components

If you are planning a comprehensive repair or upgrade of the passive safety zone in your Mercedes and need other parts from the same group, such as additional impact sensors, SRS control modules, or related wiring harnesses, check the available parts in the Other Mercedes category.

For comparison of solutions used in sport versions of other brands and for a better understanding of the differences in the construction of powertrain and braking systems, it is worth reading the article discussing RS models – details can be found in the material Audi RS vs. Other Models – What Lies Under the Hood and Chassis?.