Z Series E85 Z4 3.0Si (N52) ROADST
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4 active wheel-speed sensors
> E87 with 6-cylinder engine, E90, E91, E92, E93
The active wheel-speed sensors measure the speed of the individual wheels. This type of sensor also
recognises the direction of rotation of the wheels.
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DSC sensor
The DSC sensor measures the rotation of the vehicle around the vertical axis (yaw rate) and the lateral
acceleration of the vehicle.
> E85, E86
The longitudinal-acceleration sensor is part of the DSC sensor.
On vehicles with Active Steering, a DSC sensor is installed with redundant sensor system (i.e.. 2 signals for
yaw rate and 2 signals for lateral acceleration).
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DSC unit
The DSC unit consists of the hydraulic unit and the DSC control unit.
All 5 brake pressure sensors are integrated into the valve block of the DSC unit.
The board of the DSC control unit also holds a longitudinal-acceleration sensor.
> E85, E86
The longitudinal-acceleration sensor is not part of the DSC unit but rather part of the DSC sensor.
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Steering-angle sensor
> E85, E86
The steering-angle sensor uses sliding contacts to measure the angle of rotation of the steering wheel.
[more ...]
>E87, E90, E91, E92, E93
The steering-angle sensor optically measures the angle of rotation of the steering wheel.
[more ...]
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DTC button
> E85, E86
The DTC button is located in the SZM (centre console switch cluster).
>E87, E90, E91, E92, E93
The DTC button is located in the centre console between the central air vents.
The DTC button has 3 switching states:
1.
DSC operational (standard setting)
2.
DTC operational
3.
DSC and DTC completely deactivated
Additional input signals from the following components:
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Brake-fluid-level switch
If the brake fluid level is too low, this will be detected (via a reed contact in the expansion tank) and an
appropriate message sent to the DSC control unit.
DSC is deactivated if there is insufficient brake fluid. There would otherwise be a risk of air being drawn into the
brake system.
SBT Dynamic Stability Control Mk60E5 E85, E86, E87, E90, E91, E92, E93
BMW AG - TIS
18.02.2013 04:21
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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