Integral Active Steering rear actuator
Adjusts rear-wheel steering angle on equipped cars.
At the rear axle steering mechanism.
An actuator moves rear steering links under coordinated control; behavior depends on conditions and generation.
A second steering helper at the back of the car.
Chassis warnings or alignment issues can involve sensors, links, control or the actuator.
Joints and boots are inspected for play, damage and leakage; electrical assistance has no universal preventive replacement interval.
A tie-rod or boot service differs from a complete assisted rack. Alignment and electronic calibration may add work.
Integral Active Steering is optional or model-specific; an xDrive badge does not establish rear-wheel steering.
BMW steering systems as fitted; assistance type and rear-steering availability depend on chassis.