BMW F12 2011 Technical Training Manual page 44

F12￿Chassis￿Dynamics
5.￿Steering
Owing￿to￿the￿principle￿of￿active￿steering,￿up￿till￿now￿it￿was￿only￿possible￿to￿respond￿to￿oversteering￿ve-
hicle￿behavior￿with￿individual￿brake￿modulation￿of￿the￿outside￿rear￿wheel￿by￿the￿DSC.
With￿the￿introduction￿of￿active￿rear￿axle￿steering,￿corrective￿action￿is￿now￿possible￿in￿understeering￿sit-
uations￿through￿intervention￿of￿the￿Integral￿Active￿Steering￿which￿further￿increases￿active￿safety.
The￿components￿of￿Integral￿Active￿Steering￿"active￿steering￿AL"￿and￿"rear￿axle￿slip￿angle￿control￿HSR"
cannot￿be￿ordered￿separately￿and￿are￿only￿available￿with￿the￿Integral￿Active￿Steering￿package￿(SA
2VH).
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