Mercedes C238 Rear Axle ABS Sensor Wiring Right O/S A2135403805

The Mercedes C238 ABS Sensor Rear Right Cable is an original traction control system component designed for installation on the rear right axle of Mercedes vehicles. Precise wheel speed reading ensures stable operation of the ABS, traction control, and brake assist systems, leading to safer driving. A used OEM component is a sensible choice for brake system service when you prioritize factory fitment and predictable electronic performance.

Specifications and technical data

• SKU: A2135403805
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2135403805
• Substitutable numbers: A2135403805, A 213 540 38 05
• Location on the vehicle: Rear, Right
• Category: Other Transmission & Drivetrain

Purpose and Function of the Rear Right ABS Sensor

The ABS sensor with a wiring harness for the rear right side is responsible for monitoring wheel rotational speed and transmitting the signal to the brake system controller. A properly functioning component:

• stabilizes ABS operation during sudden braking,
• supports the function of traction control and stability control systems,
• reduces the risk of wheel lock-up on slippery surfaces,
• prevents the appearance of ABS-related errors and warning lights.

Thanks to its dedicated placement on the rear right axle, the sensor works with the factory hub and electrical system, facilitating installation and minimizing the need for modifications.

Construction, Wiring Harness, and Fitment for Mercedes C238

The presented ABS sensor with cable has been specifically designed for the C238 body style, ensuring compatibility with factory mounting points and standard electrical connectors. The integrated wiring harness:

• transmits the signal from the sensor directly to the vehicle's wiring,
• is appropriately lengthed for the rear right side of the body,
• features factory-end connectors for a secure connection to the car's wiring harness.

This solution minimizes the risk of signal interference and simplifies diagnostics in case of future malfunctions.

Benefits of Using an Original Mercedes Part

Choosing an original ABS sensor with cable for the Mercedes C238 offers a range of practical advantages:

• factory fitment to suspension geometry and wheel hub,
• consistency of electrical parameters with other brake system components,
• reduced risk of incorrect wheel speed readings,
• easier integration with the vehicle's safety systems.

This ensures that the ABS and driving assistance systems maintain the characteristics intended by the manufacturer, which is particularly important in premium vehicles.

Condition, Installation, and Service Application

This part is a used component intended for reinstallation in a vehicle requiring the restoration of proper ABS function on the rear right axle. In practice, the sensor with cable is suitable for situations where:

• ABS errors related to the rear right wheel occur,
• the cable or sensor itself has been damaged due to corrosion, impact, or mechanical interference,
• the component needs to be replaced with a part matching factory specifications.

Due to its dedicated placement on the vehicle, installation is straightforward, maintaining original cable routing and mounting points.

If you are planning a comprehensive repair or upgrade of the brake and traction control system area in your Mercedes and need other components from the same group, such as wheel speed sensors, signal cables, or ABS wiring harnesses, check the available parts in the Other Mercedes category.

Technical Support and Knowledge of Performance Systems

When diagnosing and servicing ABS systems and advanced braking systems, it is beneficial to understand the differences between solutions used in standard and performance versions. Complex systems, similar to those used in high-performance models, require particular attention to the quality of sensors and the correctness of installation. If you are interested in how manufacturers develop powertrains, brakes, and chassis in high-performance models, read the article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which helps to better understand the importance of precise components in modern vehicles.