Mercedes W213 C238 Rear Axle Wheel ABS Sensor Wiring Left N/S A2135403905

Description

Mercedes W213 C238 Rear Axle Wheel ABS Sensor Wiring Left N/S is an original traction control system component designed for installation on the rear axle on the driver’s side. Thanks to its factory-spec fitment, it ensures stable cooperation with the ABS and ESP systems, which translates into predictable vehicle behavior during braking and acceleration. This is a practical service solution for users who want to restore the proper operation of the chassis electronics without experimenting with aftermarket replacements.

Specifications and technical data

• SKU: A2135403905
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2135403905
• Substitutable numbers: A2135403905, A 213 540 39 05
• Location on the vehicle: Rear, Left
• Category: Other Transmission & Drivetrain

Purpose and function in the vehicle

The presented Mercedes W213 C238 Rear Axle Wheel ABS Sensor Wiring Left N/S is designed to operate on the rear axle on the left side in Mercedes E-Class W213 generation models and the C238 coupe version. The component is responsible for the precise reading of wheel rotation speed and transmitting the signal to the brake system controller, which enables:

• proper operation of the ABS system during emergency braking,
• support for electronic stability control systems,
• correct operation of functions related to traction control and safety assistants.

By maintaining the original geometry and cable length, installation in factory mounting points is predictable and does not require any modifications to the wiring.

Construction and advantages of using an original component

The Mercedes W213 C238 Rear Axle Wheel ABS Sensor Wiring Left N/S has been constructed as a complete solution, including both the measuring part and the signal cable with the appropriate connectors. This combination ensures:

• electrical consistency with the vehicle’s factory wiring,
• adequate resistance to operating conditions in the suspension and brake area,
• preservation of the parameters required by the brake system controller.

Using an original Mercedes component limits the risk of ABS system errors, warning messages on the dashboard, and adaptation problems in the controller. This is particularly important in modern vehicles, where many safety functions rely on precise data from wheel speed sensors.

Condition, fitment, and service aspects

The offered item comes from disassembly and is a used product, which allows for economical repair while maintaining the original specification. In service practice, such a solution is often chosen as a compromise between cost and quality, especially in the case of electronic components with strictly defined parameters.

Before installation, a standard workshop procedure is recommended, including inspection of sockets, mounting points, and cable routing along the control arm and body. Proper routing of the wiring minimizes the risk of chafing, mechanical damage, and signal interference, which has a direct impact on the stability of safety systems.

Support in selection and system expansion

When working on the brake system and rear axle suspension, it is worth paying attention to the consistency of all components cooperating with the ABS sensor – from the wheel hub and pulse ring to the body wiring harness. Selecting the right component is facilitated by the manufacturer’s markings and compatibility with the vehicle platform, which is crucial for avoiding compatibility issues.

If you are planning a comprehensive repair or upgrade of the chassis and brake system area in your Mercedes and need other elements from the same group, such as sensors, wiring harnesses, or small mounting components, check the available parts in the Other Mercedes category.

Technical knowledge and development of chassis systems

Modern braking and drive systems in premium cars, such as Mercedes or sports models from other brands, rely heavily on precise data from wheel speed sensors. To compare solutions used in different designs, it is worth reading the analysis of drive and brake systems in high-performance cars – you will find it in the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how important the cooperation of electronics with chassis mechanics is.

If your service strategy also focuses on economic and environmental aspects, a good supplement to your knowledge will be the material on the conscious use of parts from disassembly – you can read more about this in the article Eco-driving: discover the benefits of used car parts, which discusses the advantages of reusing components in the automotive industry.