6 Series E64 645Ci (N62) CONVER
backrest is not locked in correctly (E64 only).
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Head-up display
A corresponding check control message and an information text are shown in the head-up display (HUD) when
the backrest is not locked in correctly (E64 only).
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Seat heating LEDs
3 light emitting diodes (LEDs) in the centre console switch cluster indicate the switched status of the seat
heating system.
Seat communication features the following bus systems:
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Body controller area network
The body controller area network (K-CAN) is a two-wire bus for communication between all control units
connected to the K-CAN.
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Body bus
The body bus (K-bus) is a single-wire connection. The centre console switch cluster and the seat modules
communicate with each other via the K-bus.
System functions
The system functions of the electrically operated seats include:
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Seat adjustment
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Rear easy-entry facility
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Seat heating
Seat adjustment
The installed seats feature the following seat adjustment options:
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Seat forward/backward adjustment (with electric drive unit, 2 speed stages)
•
Seat height adjustment (with electric drive unit)
•
Seat depth adjustment (manual only, sports seat only)
•
Backrest angle adjustment (with electric drive unit)
•
Head restraint height adjustment (E63: manual; E64: with electric drive unit)
•
Head restraint angle adjustment (manual only)
•
Lumbar support height adjustment (electropneumatic)
•
Lumbar support depth adjustment (electropneumatic) [more ...]
The standard seat forward/backward adjustment, seat height adjustment, seat cushion tilt adjustment and
backrest angle adjustment facilities are each operated with separate electric drive units in all seats. The head
restraint height adjustment is driven by an electric drive unit only on the E64.
All these functions are controlled via the control panel on the outer sides of the seat cushions. Signals from the
respective button trigger seat adjustment in the required directions.
A separate rocker switch is used to operate the lumbar support. An electric pump supplies the lumbar support
cushion with compressed air. The individual air chambers are filled or emptied via several valves to vary the
height and thickness of the lumbar support.
The limit stop is calculated for each drive unit in order to reduce the load of the electric drive units to a minimum.
Automatic recognition of the limit stops is integrated in each of the electric drive units. Hall sensors integrated in
the drive units register the adjustment distances which are processed in the seat module. In the event of the
drive unit blocking, the detected position value is interpreted as the limit stop. All subsequent adjustments are
SBT Electrically adjustable seats E63, E64
BMW AG - TIS
05.02.2013 03:34
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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