Audi A3 8P Wheel Speed ABS Sensor Rear Right O/S WHT003858

Audi A3 8P Wheel Speed ABS Sensor Rear Right O/S is a component responsible for precise wheel speed reading and stable operation of the anti-lock braking system. This component, designed for the rear right side of the vehicle, allows for restoring the proper functioning of the ABS system and its associated safety features, ensuring predictable vehicle behavior during braking. Thanks to the use of a solution compliant with factory specifications, the braking system maintains proper operating parameters, and the ABS controller receives reliable data from the rear axle.

Specifications and technical data

• SKU: WHT003858
• Mark: Audi
• Condition: Used
• OEM Part Number: WHT003858
• Substitutable numbers: WHT003858, WHT 003 858
• Location on the vehicle: Rear, Right
• Category: ABS Speed Sensors

Function and role of the ABS wheel speed sensor in the Audi A3 8P

The ABS wheel speed sensor for the rear right wheel in the Audi A3 8P is responsible for generating a signal that is analyzed by the brake system controller. Based on this data, the ABS system regulates pressure in the brake circuits, reducing the risk of wheel lock-up during sudden braking or driving on surfaces with varying grip. A properly functioning sensor:

• ensures stable operation of the ABS system and its supporting traction control algorithms,
• influences the even distribution of braking force between the axles,
• reduces braking distance in emergency situations,
• minimizes the risk of ABS/ESP warning lights appearing on the instrument cluster.

Vehicle placement and fitment

The presented item is designed for the rear right side of the vehicle, which is crucial when selecting parts for a specific mounting position. Proper placement on the vehicle guarantees correct positioning relative to the impulse ring and appropriate geometry of the signal cable. As a result, the sensor can generate a stable signal without interference, and installation proceeds in accordance with the factory design assumptions of the Audi A3 8P rear axle.

Benefits of using an original ABS wheel speed sensor

Choosing an ABS wheel speed sensor dedicated to Audi allows for maintaining consistency with the vehicle's factory electronic architecture. The main advantages of such a solution include:

• Compatibility with the ABS system and electronic stability control systems – the sensor works with the factory controller, which reduces the risk of communication errors.
• Appropriate signal characteristics – electrical parameters and the method of pulse generation are matched to the requirements of the Audi braking system.
• Proper cable and connector routing – design adapted to the geometry of the rear right wheel suspension.
• Possibility of restoring full functionality of the ABS system after a failure or damage to the previous sensor.

Thanks to this, installing such a component is a technically safe solution and allows for maintaining the predictable operation of driver assistance systems.

Product characteristics and practical application

The offered ABS wheel speed sensor is intended for Audi vehicles, in particular for the A3 8P generation model, in the rear right wheel configuration. As an element from the brake system measurement electronics group, it operates in a demanding environment – near the hub, exposed to temperature changes, moisture, and road debris. Proper design and fitment to the specific mounting position allow for:

• stable mounting in the steering knuckle or bracket,
• maintaining the appropriate working gap relative to the impulse ring,
• reducing the risk of mechanical damage to the signal cable.

In practice, replacing the sensor is often necessary after errors appear in the ABS controller memory, a warning light illuminates on the dashboard, or the anti-lock system stops working on one of the axles. Using a component designed specifically for the rear right side allows for the effective removal of such faults.

Selecting a used ABS sensor and additional materials

When choosing a used ABS wheel speed sensor, it is worth paying attention to compliance with manufacturer markings and the intended use for a specific mounting position. Both catalog data and comparison with the removed element can be helpful. If you want to better understand when the use of used electronic components makes sense and how to minimize risks when making such a choice, read the article on the second life of automotive electronics and selecting used modules and sensors, where you will find practical tips regarding diagnostics and part selection.

If you are planning a comprehensive repair or upgrade of the braking zone in your Audi and need other elements from the same group, such as wheel speed sensors for other positions, signal cables, or mounting elements, check the available parts in the Audi ABS wheel speed sensor category.