5 Series E60 525d (M57TU) SAL
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Switch for steering-column adjustment
This switch enables the driver to adjust the tilt and reach setting of the steering column. The switch for steering-
column adjustment is on the left-hand side of the steering column.
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Steering-column adjustment drive unit
Two motors are built into the drive unit. 1 motor drives the tilt and reach adjustment of the steering column. The
second motor changes the direction of adjustment via the adjustment gears.
The adjustment movement and position recognition for both tilt and reach adjustment are recorded in the drive
unit for the steering-column memory. There are 2 Hall sensors and 2 magnetic rings (16-pin) integrated in the
drive unit.
[more ...]
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Steering column switch cluster
The switch for steering-column adjustment sends its signal to the steering column switch cluster (SZL). The
steering column switch cluster forwards this signal to the centre console switch cluster (SZM).
>up to 09/2005
Signal path: Switch for steering-column adjustment -> Steering column switch cluster (SZL) -> byteflight ->
Safety and gateway module (SGM) -> K-CAN -> Centre console switch cluster (SZM).
>from 09/2005
Signal path: Switch for steering-column adjustment -> Steering column switch cluster (SZL) -> Body gateway
module (KGM) -> K-CAN -> Centre console switch cluster (SZM).
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Centre console switch cluster
The centre console switch cluster (SZM) actuates the steering-column adjustment. The centre console switch
cluster also stores the positions for the steering-column memory. [more ...]
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Door contact in the driver's door
The centre console switch cluster needs the signal from the door contact. The signal for easy entry and exit is
used in conjunction with the terminal status.
>up to 09/2005
Signal path: Driver's door contact switch -> Driver's door module (TMFA) -> byteflight -> Safety and gateway
module (SGM) -> K-CAN -> Centre console switch cluster (SZM).
> from 09/2005
Signal path: Driver's door contact switch-> Body gateway module (KGM) -> K-CAN -> Centre console switch
cluster (SZM).
System functions
The fully electric steering-column adjustment comprises the following functions:
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Manual steering-column adjustment
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Steering-column memory
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Overheating protection for steering-column adjustment motors
Manual steering-column adjustment
The driver is able to adjust the steering column with a switch. When the switch is operated, the signal is
transmitted cyclically from terminal 30 (cycle time: 100 milliseconds). The steering-column adjustment is
actuated for as long as the signal is being received.
Once the switch is no longer actuated, the message "Stop" is transmitted 3 times.
The steering-column adjustment is stopped when this signal is received, or if the cyclic message is not received
twice.
SBT Fully electric steering-column adjustment E60, E61, E63, E64
BMW AG - TIS
12.02.2013 15:33
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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