Hella 012039771 ABS Wheel Speed Sensor - Rear

Reliable ABS Wheel Speed Sensor for Audi and Volkswagen Models

The Hella ABS Wheel Speed Sensor 012039771 is designed for precise wheel speed monitoring on the rear axle left and right positions. Compatible with select Audi and Volkswagen vehicles, this sensor ensures accurate data for your vehicle's anti-lock braking system.

• Fitting Position: Rear axle left and right
• Rated Voltage: 12V for standard vehicle electrical systems
• Sensor Type: Hall sensor technology for reliable signal output
• Compatible with Audi A3, A3 Sportback e-tron, Volkswagen e-Golf, Golf, Golf Alltrack, Golf SportWagen, and GTI models
• Part Number: 012039771 for precise identification and fitment

About the Hella Product Line

The Hella brand line is known for delivering automotive components that meet stringent quality and performance standards. This ABS Wheel Speed Sensor is part of Hella's sensor range, engineered to provide consistent and accurate wheel speed data essential for the proper function of ABS and traction control systems in Audi and Volkswagen vehicles.

Product Details and Functionality

The 012039771 ABS Wheel Speed Sensor uses Hall sensor technology to detect wheel rotation speed by generating a voltage signal corresponding to wheel movement. Operating at a rated voltage of 12 volts, it is designed to fit the rear axle on both left and right sides, ensuring balanced and reliable input to the vehicle's electronic control units. This sensor is critical for maintaining vehicle stability and safety by enabling the ABS system to modulate braking pressure effectively.

Common Issues Addressed by This Sensor

• Intermittent or no ABS warning light due to faulty wheel speed data
• Erratic or non-functional anti-lock braking system
• Traction control system malfunctions related to wheel speed input
• Inaccurate speedometer readings on affected wheels
• Reduced vehicle stability during braking on Audi A3 or Volkswagen Golf models

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before sensor replacement
• Clean the sensor mounting area to avoid contamination affecting sensor performance
• Verify the correct orientation and position on the rear axle left or right side
• Check electrical connections for corrosion or damage before installation
• Use the part number 012039771 to confirm compatibility with your specific Audi or Volkswagen model

Quality Assurance and Warranty

Hella ABS Wheel Speed Sensors undergo rigorous testing to meet OEM standards for durability and accuracy. While specific warranty details may vary, Hella products typically come with manufacturer-backed quality assurance to support reliable operation in Audi and Volkswagen vehicles.