Mercedes-Benz C-Class W204 Steering Column Cluster Indicator Wiper Stalks Squib

Mercedes-Benz C-Class W204 Steering Column Cluster Indicator Wiper Stalks Squib is an original control system component, including indicator stalks, wiper stalks, and the airbag clock spring assembly. This solution is dedicated to the front left side of the vehicle, ensuring precise control of body functions and consistency with factory electronics. By maintaining the OEM design, this component allows for seamless integration with the steering column in your Mercedes.

Specifications and technical data

• SKU: A2045407401
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2045407401
• Substitutable numbers: A2045407401, A 204 540 74 01, BG
• Location on the vehicle: Front, Left
• Category: Steering Columns

Purpose and function in the steering system

The described stalk assembly is an integral part of the Steering Column in the Mercedes C-Class W204 generation. It is responsible for operating the turn signals, wiper functions, and communication between the steering wheel and safety and comfort modules. Its placement on the front left side of the vehicle ensures ergonomic access for the driver and compliance with the factory control system.

This component is particularly important when replacing a damaged module after a collision, electrical failure, or mechanical wear of the stalks. Using an original part from the same model family minimizes the risk of communication errors in the vehicle's bus system and issues with the driver's airbag operation.

Construction of the stalk assembly and airbag clock spring

The steering column switch combines several control functions in one housing, which simplifies installation and service. In a typical configuration for the C-Class W204, it includes:

• an indicator stalk with high and low beam functions,
• a wiper and windshield washer control stalk,
• an airbag clock spring assembly (so-called squib) ensuring a stable electrical connection with the steering wheel.

Such a design allows for maintaining signal consistency in the steering system and facilitates the diagnosis of potential faults. Original manufacturing promotes proper cooperation with control modules and sensors in the steering column.

Condition, fitment, and service application

The offered item comes from a Mercedes vehicle and is classified as a used part, which is a cost-effective solution while maintaining factory specifications. It is a practical choice for post-accident repairs, mechanical damage to the stalks, or issues with the clock spring, manifesting in, among other things, airbag errors or improper switch operation.

Due to its dedicated design for the C-Class W204, installation proceeds in a manner similar to the factory process – after correctly selecting the version and vehicle equipment configuration. It is recommended to perform computer diagnostics before installation to confirm the module's compatibility with the current controller configuration in the car.

Benefits of using an original steering column assembly

Choosing an original steering column switch for the Mercedes C-Class W204 provides a number of practical advantages:

• preservation of factory ergonomics for indicator and wiper operation,
• proper cooperation with the driver's airbag system,
• consistency with the electrical installation and comfort modules,
• reduced risk of compatibility issues compared to low-quality replacements.

For workshops and individual users, this means stable operation of the steering system and fewer service returns related to electronic errors.

If you are planning a comprehensive repair or upgrade of the steering area in your Mercedes and need other components from the same group, such as additional stalks, control modules, or complete switch assemblies, check the available parts in the Mercedes Steering Columns category.

Technical support and knowledge about the steering system

To better understand the role of the steering column, stalks, and airbag clock spring in the entire vehicle control system, it is worth reading the guide describing the construction and typical faults of this area. Practical tips regarding diagnostics, symptoms of wear, and examples of using used components can be found in the article Steering system and power steering – how it works and what breaks?.