Mercedes E-Class S211 W211 Steering Angle Sensor Slip Ring Squib A0004640518

Mercedes E-Class S211 W211 Steering Angle Sensor Slip Ring Squib is a precision steering system component responsible for the proper operation of safety and vehicle stability systems. This component from the Relays and switches group ensures accurate steering wheel position readings and signal transmission to the airbag and other modules. Thanks to its factory design intended for E-Class S211 and W211 models, it provides a functional service solution for demanding users.

Specifications and technical data

• SKU: A0004640518
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0004640518
• Substitutable numbers: A0004640518, A 0004640518, A 000 464 05 18, EM
• Location on the vehicle: Rear, Right
• Category: Relays & Contactors

Purpose and function in the vehicle system

The described steering angle sensor with slip ring and airbag connector is an electronic component mounted within the steering column, working in conjunction with electronic stability control, power steering, and passive safety systems. Its task is to precisely monitor the steering wheel position and transmit signals to the vehicle's control units, which influences the correct operation of functions such as traction control or driver assistance systems.

The location specified as rear – right side refers to the mounting configuration in the given vehicle and allows for proper alignment of the component during service work. This provides the mechanic or user with clear information on which zone of the vehicle the component should be installed in, reducing the risk of installation errors.

Compatibility with Mercedes E-Class S211/W211

Mercedes E-Class S211 W211 Steering Angle Sensor Slip Ring Squib has been designed with the factory electrical architecture of these models in mind. This means it is compatible with original connectors, wiring harnesses, and control modules, which facilitates integration with the existing installation. Using an original design from the Relays and switches group allows for maintaining consistency in operating parameters with other system components.

The product has a dedicated OEM part number and associated interchangeable numbers, which facilitates verification of compatibility with a specific vehicle equipment version. Before purchasing, it is worth comparing the markings with the data in the vehicle or service documentation to ensure full compatibility with the given E-Class configuration.

Technical characteristics and functional advantages

As an element from the electronic switches and relays category, the steering angle sensor with slip ring and airbag connector is responsible for:

• transmitting the signal about the current steering wheel position to the vehicle's control units,
• ensuring electrical connection continuity with the airbag in the steering wheel,
• cooperation with electronic stability control and power steering systems,
• integration with the factory electrical installation of the Mercedes E-Class S211/W211.

The used nature of the part allows for an economical restoration of system efficiency while maintaining the original design. For many users and workshops, this is a reasonable compromise between repair costs and maintaining factory technical solutions. Using an original component minimizes the risk of communication problems in the vehicle's bus and errors in the operation of safety systems.

Condition, verification, and service application

The item is offered as a used part, which means it comes from disassembly but has been verified for suitability for further use. Such components are frequently chosen by workshops specializing in the Mercedes brand because they allow for keeping the vehicle in good technical condition at controlled service costs. A properly selected steering angle sensor with slip ring and airbag connector can effectively replace a damaged element, restoring the correct operation of electronic systems.

Before installation, a standard diagnostic procedure and possible adaptation in the control unit are recommended, in accordance with the vehicle manufacturer's guidelines. This ensures stable system operation and avoids the recurrence of errors related to steering angle readings.

Expansion of repair scope and additional materials

If you are planning a comprehensive repair or upgrade of the electrical and control installation area in your Mercedes and need other elements from the same group, such as various types of relays, function switches, or control modules, check the available parts in the Mercedes Relays and switches category.

For users considering a wider range of service work on the suspension and associated systems, a guide discussing the differences between stock and sports solutions as well as the selection of used components may be helpful – details can be found in the article Stock vs. sports suspension – construction differences and is it worth buying used suspension parts?.