Traction Control / Driving Dynamics Control - BMW E61 Sports Wagon 530xiT Owner's Manual

Traction Control / Driving Dynamics Control

Traction control monitors the slip conditions on the front and rear axles. The wheel
speeds, yaw rate and transversal acceleration serve as the input signals.
The function of traction control/driving dynamics control is to achieve optimum traction
and to keep the vehicle stable.
As seen in the following graphic, in the event of an oversteer tendency, the transfer case
clutch is completely engaged and the maximum supportable driving torque on the front
axle is transmitted. This helps to "pull' the front of the vehicle until stability is achieved.
In the event of an understeer tendency, the clutch can be fully disengaged if necessary.
In this example, the front axle is separated from the drivetrain and the driving torque can
only be transmitted to the rear axle. This helps to "push" the rear of the vehicle until sta-
bility is achieved.
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E61 Sports Wagon