Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Input Signals
- DSC Signals (wheel speeds, yaw rate and lateral acceleration)
- Steering Angle
- Total (Summation) Steering Angle
- Position of electric servomotor of actuating unit.
The active front steering control unit is initialized when the ignition is turned on. The active front steering actuating unit cannot be activated during the initialization procedure. The sensor signals are checked and calibrated if necessary. If faults are detected, either the "Error" fault status is adopted or yaw rate control is deactivated. In the case of the "Error" fault status, it is not possible to activate the actuating unit. The "Drive" status is adopted after successful initialization. The active front steering control unit sends the current message corresponding to the required flow rate to the SGM via the PT-CAN.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.