Location: The Vehicle Speed Sensor may be located on the transmission output shaft housing, transfer case output shaft housing or the differential housing. The Vehicle Speed Sensor is an input to the Power train Control Module Body Control Module , and the Transmission Control Module . The vehicle's speed is required for proper ignition timing, air/fuel mixture, transmission function, cruise control operation, anti-lock brake operation, traction control operation and the vehicles active restraint system. Failure Symptoms: Malfunction Indicator Light illumination, Air Bag failure light illumination, transmission shifts incorrectly, engine surging or hesitating, speedometer failure, speedometer intermittent failure, 4 wheel drive inactive, cruise control failure Fitment Type: Direct Install Condition: 100% New Part: 83181-35070 Compatible Part No.: 83181-35070, 83181-35040, 8318135070, 5S4886, SC173, VB0176, SU11077, GT8105 Fitment: 1999-2001 For Vehicross V6 3.5L 1996-2000 For 4Runner