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Home >> Audi >> 2013 >> A4 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 633 (Dynamic Steering System Description) >> 01 On Board Diagnostic >> Dynamic Steering General Information >> Steering Column For Dynamic Steering Component Description >> Actuator
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Steering Column For Dynamic Steering Component Description: Actuator

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The actuator applies torsion to the steering pinion for the purposes of steering angle correction. The actuator has a strain wave gear driven by an electric motor. This type of gearing is ideal for converting the fast rotational movement of an electric motor to much slower rotational movements.