1 Series E87 118d (M47T2) 5-door
The LDM control unit is no longer fitted on vehicles with option 544 "Cruise control with brake function".
Because of a software modification in the DSC control unit (DSC Mk60E5), the DSC control unit assumes
control of the functions of the LDM control unit. LDM = "longitudinal dynamics management"
[For further information, please refer to SI Technology (SBT) 66 03 04 086]
Adapted interface for option 541 "active cruise control"
> E90, E91, E92, E93 ("active cruise control" always with LDM)
The interface between Dynamic Stability Control (DSC) and active cruise control (ACC) has been adapted with
the longitudinal dynamic management system. The software in the DSC control unit evaluates the demands of
the ACC even more quickly. Pressure at the wheel brakes can be built up or reduced more efficiently from the
point of view of vehicle deceleration and comfort.
The longitudinal dynamic management (LDM control unit) transmits the signals from the active cruise control.
Part of the ACC software is integrated in the LDM control unit.
[for further information, please refer to SI Technology (SBT) 66 03 04 086]
Yaw-moment compensation via Active Steering
> E87 with 6-cylinder engine, E90, E91, E92, E93
Active Steering offers an additional function for driving stabilisation:
With conventional systems, the driver has to actively steer the vehicle in a straight line if the brakes are applied
on a road surface with non-uniform traction levels ("
µ
-split"). Countersteering keeps the vehicle in its track and
helps to achieve acceptable braking distances.
For such situations, Active Steering actuates these active steering actions. The vehicle is stabilised. At the same
time, a shorter braking distance is achieved.
The DSC control unit calculates the yaw rate with the brake pressure sensors on the front axle.
The DSC control unit transmits to the Active Steering control unit the yaw-moment compensation correction
angle needed for stabilisation.
Preconditions for activation
DSC is activated after every engine start.
Notes for service staff
Service staff should note the following points:
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General information: [more ...]
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Diagnosis: [more ...]
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Encoding/programming: [more ...]
Subject to change.
SBT Dynamic Stability Control Mk60E5 E85, E86, E87, E90, E91, E92, E93
BMW AG - TIS
18.01.2013 18:31
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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