The importance of Steering Angle Sensors


Hunter's CodeLink® supports these OEM-mandated Steering Angle Sensor† reset procedures*

*Steering Angle Sensor reset requirements vary based on model and year. Please see Hunter's CodeLink 2010 Application Guide for detailed model and year coverage.
† Although steering angle sensors are most common, CodeLink also resets other related sensors when required, such as yaw rate, torque angle, and deceleration sensors.

Steering Angle Sensors (SAS) monitor the driver’s input by continuously measuring the position and turning rate of the steering wheel and reporting the information to the vehicle on-board systems.

The SAS works within a network of sensors that track wheel speed, lateral forces, vehicle roll and other variables. These measurements, along with the steering data provided by the SAS, are used to control various driver-assist systems such as Electronic Stability Control, Electric Power Steering and Active Steering.

Each of these systems depends on "knowing" the driver's intended steering direction and turning force to function as intended.


It is important that the SAS, as well as other related sensors (e.g., yaw rate, torque angle), be calibrated to the straight-ahead position in line with the front wheels and thrustline of the vehicle to relay accurate steering information.

For years, shops have calibrated or reset these sensors under OEM mandates for special cases like sensor replacement or collision repair. But a growing number of OEMs now require reset in conjunction with alignment service to ensure the driver-assist systems perform properly after a change to a vehicle's steering angle geometry.

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