Technical data

19
8
Steering angle
The signal is tapped off from the CAN. This
value influences the automatic function of the
gearbox (gearshift suppression).
Longitudinal acceleration/gradient
This value is determined by the longitudinal
acceleration sensor in the right footwell. It is
used for the purpose of calculating the
gradient.
Wake-up
The SGM control unit assumes standby mode
as soon as the vehicle is unlocked. As a result,
the hydraulic unit generates sufficient
pressure to disengage the clutch if necessary.
Bonnet contact switch
Two switches determine the bonnet status.
The driver is warned if the bonnet is open. The
vehicle can only start off immediately after
engaging the drive stage as the status is
unclear for the SMG.
Door contact
This signal should not be confused with the
wake-up signal.
Information on the door status is sent via the
CAN to the SMG control unit. The gear is
automatically disengaged when the door is
opened.
Trailer operation
The SMG control unit is informed via the CAN-
bus when the vehicle is used to tow a trailer,
consequently activating the shift characteristic
maps for trailer operation.
Engine speed
For redundancy reasons, this signal is made
available via the CAN-bus as well as a
hardware signal. It is used to control the clutch
and to establish whether the engine is running.
Within the safety concept, the engine speed
signal is used to monitor the current status.