3 Series E91 335xi (N54) TOUR
While the trailer coupling is released, the loudspeaker emits a continuous tone (E90 to 09/2005) or an acoustic
signal is given for a limited time (E90 from 09/2005, E91, E92, E93).
When the trailer coupling is locked in the end position (manually), the outputs at the microswitch change the
signal condition again. The indicator lamp lights up green. The loudspeaker is deactivated (E90 up to 09/2005).
Pivoting out and in of the electrically pivoted trailer coupling
> E60, E61
The trailer coupling can be pivoted electrically from terminal 30g ON. The following signal conditions must be
satisfied to allow the coupling to be pivoted electrically:
•
Terminal 30g: high signal
•
Button: low signal
•
Terminal 15: low signal
•
Rear lid contact switch: low signal
•
Microswitch for trailer detection: high signal
The control unit for the electrically pivoted trailer coupling uses the signal conditions to check whether the
pivoting movement can be started.
If the activation conditions are met, the following procedures can be performed by pressing the button for the
electrically pivoted trailer coupling:
-
Automatic pivoting out or in (single brief press of button)
-
Pivoting out or in by continuous operation of button
Automatic pivoting out and in
Briefly pressing the button (for less than 1 second) pivots the ball head fully automatically from one limit
position to the other.
Fully automatic pivoting out or in can be halted at any time by briefly pressing the button a further time.
Fully automatic pivoting out or in can only be started if the ball head is in one of the two limit positions or
fully automatic pivoting out or in has been halted by pressing the button.
Reversing the pivoting movement
If the permissible current consumption of the DC motor is exceeded during fully automatic pivoting out or in
(e.g. as a result of an obstruction, stiff movement or low ambient temperatures), the control unit for the
electrically pivoted trailer coupling triggers reversing. The ball head's pivoting movement is halted. The ball
head is pivoted back a short way in the opposite direction (reversed).
It can now only be moved by continuous operation of the button (manual operation).
Reversing is suppressed close to either limit position and a higher current consumption is permitted. This
allows the ball head to be pivoted out of each limit position with more force (e.g. to release the ball head if
stuck).
Pivoting out or in by continuous operation of the button
This mode is entered by pressing the button for the electrically pivoted trailer coupling for longer than 1
second.
The ball head is only pivoted for as long as the button is pressed. If the button is held pressed, the ball head
is pivoted in the opposite of its previous direction of pivoting. The ball head's pivoting movement stops when
the button is released. A further pivoting movement can only be performed in this mode.
Increased current consumption by the DC motor is permissible in the continuous button-operated mode. If
the current consumption permissible in this mode is exceeded, the ball head's pivoting movement stops.
The ball head does not pivot in the opposite direction to its previous direction of pivoting (no reversing in
this mode).
SBT Electrically operated trailer coupling E60, E61, E90, E91, E92, E93
BMW AG - TIS
24.02.2013 11:41
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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