HELLA has been a close partner to the automotive industry and automotive parts retailers for 120 years. As part of Forvia, Hella is the seventh largest OEM supplier in the world and sells to every automobile manufacturer. HELLA develops and produces vehicle-specific solutions for automobile manufacturers and other automotive suppliers around the world.
Symptoms of a Failing Speed Sensor vs. ABS Wheel Speed Sensor
Some vehicles may use the same part for both a Speed Sensor and an ABS Wheel Speed Sensor, while others may use two different parts. These parts serve different systems of the vehicle and may fail for different reasons - it is important to replace the proper sensor to fix the underlying issue.
SPEED SENSOR
The Speed Sensor(s) measure rotational speed of the transmission shafts. Common failure symptoms include:
Erratic Speedometer Behavior
Harsh or Improper Shifting
Loss of Cruise Control
Surging or Hesitation
Check Engine Light On
Located in 'Electrical'
ABS WHEEL SPEED SENSOR
The Anti-Lock Brake System (ABS) sensor monitors wheel speed. Common failure symptoms include:
Symptoms of a Failing Speed Sensor vs. ABS Wheel Speed Sensor