Mercedes A207 Rear Axle Speed Sensor Control Unit Left N/S Side A2079059602

Mercedes A207 Rear Axle Speed Sensor Control Unit Left N/S Side is a specialized component from the ABS speed sensor category, designed for operation in the rear left section of the chassis. It is responsible for the precise reading of wheel speed, which is crucial for the stable operation of the ABS and traction control systems. Thanks to its original Mercedes manufacturing, the module ensures consistency with the vehicle's original electronic architecture and predictable behavior during emergency braking.

Specifications and technical data

• SKU: A2079059602
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2079059602
• Substitutable numbers: A2079059602, A 207 905 96 02
• Location on the vehicle: Rear, Left
• Category: ABS Speed Sensors

Purpose and vehicle placement

The presented speed sensor module is designed for operation in the rear axle area on the left side. Such dedicated vehicle placement guarantees proper cooperation with the wiring harness and the ABS system controller. Installation at the correct point on the body allows for maintaining the correct geometry of pulse readings from the pulse ring, which translates into stable operation of safety systems.

Function in the ABS system and vehicle electronics

The speed sensor module in this Mercedes model is responsible for:

• continuous measurement of the rear left wheel rotational speed,
• transmitting the signal to the ABS controller and electronic stability control systems,
• cooperation with driver assistance systems that utilize wheel speed data. As a result, the braking system maintains predictable characteristics during sudden braking, and electronic systems can react precisely to loss of traction. A functional ABS speed sensor is particularly important in vehicles equipped with advanced stability systems, where any reading error can result in warning lights illuminating and a reduction in safety functions.

Benefits of using an original Mercedes module

Using a module sourced from the Mercedes brand ensures:

• compliance with factory electrical specifications – correct signal parameters and communication with the control unit,
• proper fitment of connectors and mounting points,
• consistency with the software of controllers used in the given vehicle generation. In practice, this means reducing the risk of compatibility issues, ABS errors on the dashboard, and the need for additional installation modifications. For workshops and users, this means more predictable installation and easier diagnostics when needed.

Characteristics of the used product

The offered speed sensor module comes from the secondary market, which allows for an economical repair of the ABS system while maintaining original manufacturing quality. A used component of this type is frequently chosen by workshops specializing in automotive electronics, as it allows for matching the component to a specific car configuration without the need to use replacements with uncertain parameters. To maximize the potential of used electronics, it is worth paying attention to selection by factory numbers, hardware and software compatibility, and the correct installation procedure. A detailed discussion of these issues can be found in the Global Parts guide: Used automotive electronics – ECU modules and sensors from the secondary market, which helps in consciously planning repairs using components from the secondary market.

Support for selection and expansion of the ABS system

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other elements from the same group, such as additional sensor modules, installation elements, or components cooperating with the electronic stability control system, check the available parts in the Mercedes ABS speed sensor category. The selection of the appropriate ABS speed sensor module should always be supported by verification using factory numbers and vehicle data. This minimizes the risk of incompatibility and ensures that the safety system will operate in a stable and predictable manner after the repair is completed.