System Functions: Notes

The Active Front Steering system comprises the following functions:

• Steering assistance (= Servotronic)
• Variable steering-gear ratio (= Active Steering)
• Yaw-rate control (= damping of dynamic yaw)

A new function will be added in further development leading to the start of series production of the BMW 3-Series:

• Yaw-moment compensation when braking on a road surface with non-uniform traction

In further development from the E70  , this function is entirely integrated in the Active Steering control unit (3rd generation). Further model series to follow.

The fully electric steering-column adjustment comprises the following functions:

• Manual steering-column adjustment
• Steering-column memory
• Overheating protection for steering-column adjustment motors