Mercedes W163 Rear Axle ABS Speed Wheel Sensor Left N/S Side A1635422018

Mercedes W163 Rear Axle ABS Speed Wheel Sensor Left N/S Side is a precision safety system component responsible for accurate wheel speed reading and the proper operation of the ABS system. Thanks to its factory-fit design for the rear left axle, it ensures stable communication with the vehicle's electronics and predictable car behavior during braking. This is a solution for users who expect consistent braking system performance and want to restore full ABS functionality in their Mercedes.

Specifications and technical data

• SKU: A1635422018
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1635422018
• Substitutable numbers: A1635422018, A 163 542 20 18
• Location on the vehicle: Rear, Left
• Category: ABS Speed Sensors

Purpose and fitment for Mercedes W163

The presented item belongs to the ABS Speed Sensor category and is designed for installation on the rear left axle of Mercedes W163 class models. The placement on the vehicle is strictly defined, which allows for maintaining the correct signal reading geometry from the pulse ring and proper cooperation with the ABS control module.

Thanks to a design consistent with the manufacturer's factory specifications, the sensor works with the original wiring harness and mounting points in the steering knuckle and rear beam. Such fitment reduces the risk of installation errors and eliminates the need for wiring modifications.

Function in the ABS system and benefits of replacement

The wheel speed sensor is responsible for generating a signal used by the ABS controller to monitor pressure in the brake circuits. A properly functioning component on the rear left axle contributes to:

• stable ABS system operation during emergency braking,
• even distribution of braking force between the rear wheels,
• reduction of system intervention when it is not necessary,
• reduction of errors and warning messages related to the ABS system.

Replacing a faulty sensor with a functional unit dedicated to a specific position on the vehicle allows for restoring proper operation of brake assist systems, which directly translates to driving safety, especially on slippery surfaces.

Component characteristics and installation

The offered ABS speed sensor is a Mercedes brand part, which means it maintains the correct electrical and mechanical parameters required by the control system in W163 models. The component is prepared for installation in place of the factory sensor on the rear left axle, maintaining the original cable routing and mounting points.

During installation, it is worth paying attention to:

• thorough cleaning of the socket in the steering knuckle or beam,
• checking the condition of the pulse ring on the wheel hub,
• correct cable routing to avoid chafing and tension,
• secure connection of the electrical plug, which ensures stable contact.

Such an approach allows for fully utilizing the factory fitment of the sensor and minimizing the risk of recurring faults related to wheel speed reading.

Product condition and service application

The item is offered in used condition, making it an attractive service solution for users looking for a compromise between repair costs and maintaining the vehicle's original specifications. A used ABS speed sensor can be particularly beneficial for comprehensive brake system maintenance in older Mercedes W163 models, where both functionality and repair economy are important.

Selecting the right sensor for a specific vehicle version should be based on the OEM number and interchangeable part numbers, which helps avoid compatibility issues and ensures proper cooperation with the existing ABS controller.

Technical support and additional information

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 sensors for other wheels, signal cables, or related system components, check the available parts in the Mercedes ABS Speed Sensor category.

To better understand how to safely and consciously use used electronic components in a car, including wheel speed sensors, it is worth reading the guide on selecting and installing such components: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.