Mercedes-Benz A-Class W169 Rear ABS Brake Wheel Speed Sensor Cable A1695401517

The Mercedes W169 Rear ABS Speed Sensor is an original brake system component designed for installation on the rear axle of Mercedes W169 vehicles. This component, categorized as an ABS speed sensor, is responsible for accurately reading wheel rotational speed, supporting the stable operation of the ABS system and enhancing driving safety. Due to its factory origin, it maintains proper operating parameters and compatibility with the vehicle's electronics.

Specifications and technical data

• SKU: A1695401517
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1695401517
• Substitutable numbers: A1695401517, A 169 540 15 17, KZ
• Location on the vehicle: Rear
• Category: ABS Speed Sensors

Purpose and Function of the ABS Sensor

The ABS speed sensor installed on the rear axle is responsible for transmitting wheel rotational speed information to the control unit. Based on this data, the anti-lock braking system can regulate brake pressure, limiting skidding and improving vehicle control during intense braking. A properly functioning sensor contributes to:

• Driving stability during emergency braking,
• The effectiveness of the ABS system,
• Proper interaction with other safety systems, if present in the vehicle.

Why Choose an Original Sensor for Mercedes W169

An original speed sensor designed for the Mercedes W169 ensures correct geometric and electrical fitment with the wiring harness and wheel hub. This minimizes the risk of installation problems, reading errors, or the appearance of ABS system fault messages. Factory manufacturing means compliance with the parameters specified by the vehicle manufacturer, which translates to stable brake system operation.

The component designed for the rear axle has been engineered to operate in demanding conditions – near the wheel hub, where contaminants, moisture, and variable temperatures are present. The proper housing design and carefully selected materials limit the impact of these factors on the measurement signal.

Condition, Verification, and Installation Aspects

The presented sensor is a used part, allowing for an economical repair of the ABS system while maintaining the original origin of the component. Such elements are often chosen for servicing older vehicles where a reasonable repair cost is important while maintaining correct operating parameters. Selecting the correct sensor should always consider the manufacturer's markings and its intended use for a specific vehicle axle.

During installation, it is recommended to:

• Thoroughly clean the seat in the steering knuckle or hub,
• Check the condition of the pulse ring (if used in the specific solution),
• Inspect the electrical harness and connectors for corrosion and mechanical damage.

A correctly installed sensor allows for the rapid restoration of full ABS system functionality without the need to interfere with other brake system components.

Safety, Diagnostics, and Part Selection

A faulty speed sensor can manifest as an illuminated ABS warning light, extended braking distances in challenging conditions, or improper operation of driver assistance systems. In such situations, replacing it with a functional part is crucial for maintaining an adequate level of safety. If you have doubts about selecting the correct part, it is advisable to consult the manufacturer's markings and the vehicle's technical documentation.

If you are interested in a broader context of operating used drivetrain components and their associated sensors, check out our guide: Learn how to consciously choose used differentials, sensors, and drivetrain components. This provides practical knowledge for planning car repairs and upgrades.

Summary

The Mercedes W169 Rear ABS Speed Sensor is a sensible choice for drivers who want to restore the proper operation of the ABS system while maintaining the vehicle's original specifications. A correctly selected and installed sensor supports stable braking, improves vehicle control, and reduces the risk of unwanted system error messages. It is a practical service solution for owners of Mercedes W169 models who prioritize functionality and compliance with original design intentions.