BMW 7 Series: System Overview
System Circuit Diagram, Multifunction Seat (comfort seat)
Fig. 93: Multifunction Seat System Circuit Diagram
COMPONENTS DESCRIPTION CHART
- Switch block, driver's door
- Button block in the armrest, driver's side
- Motors, mirror adjustment, driver's side
- Footwell module (FRM)
- Central gateway module (ZGM)
- Driver's seat module (SMFA)
- Integrated automatic heating/air conditioning (IHKA)
- Junction box electronics (JB)
- Motors, mirror adjustment, passenger's side
- Fuses in the front distribution box
- Motor, longitudinal seat adjustment
- Motor, seat-inclination adjustment
- Motor, seat-height adjustment
- Motor, backrest-inclination adjustment
- Motor, seat-depth adjustment
- Motor, upper backrest adjustment (LKV)
- Motor, head-restraint height adjustment
- Motor, backrest-width adjustment
- Pump, lumbar support/active seat
- Pressure distributor, active seat
- Fan, active seat ventilation, seat surface
- Fan, active seat ventilation, backrest surface
- (1) Lumbar support pump
- Lumbar support, solenoid valves
- Seat-heating pad, seat surface
- Seat-heating pad, backrest surface
- Seat function buttons, driver's seat
K-CAN2 - Body CAN2
K-CAN - Body CAN
LIN-Bus - Local interconnect network bus
KI. 30B - Terminal 30 basic operation
(1) Pump in a vehicle equipped with lumbar support. In a vehicle equipped
with active seats, a different
pump is used. This pump supplies the active seat and lumbar support with air.
K-CAN signals at the seat module
K-CAN SIGNALS CHART
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Electric Front Seat Adjustment
The seats can be adjusted from terminal 30B ON. The seat-adjustment switch
simply has to be pressed in the
desired direction. The seats can have up to eight adjustment
The memory function is available for both the driver's and front-passenger
seats. The memory buttons are
located on the armrest. The memory function can be activated from terminal 30B
ON. The memory
The seat heating is standard as part of the comfort seats. The seat module is
functionally responsible for seat
heating.
The seat heating can only be activated from terminal 15 ON. The status of
te
SEE MORE:
REPLACING FAN FOR THIGH SUPPORT ON FRONT SEAT
Necessary preliminary tasks
Remove padding for thigh support.
Remove separating net (1).
Lift out fan (2).
Fig. 51: Identifying Front Seat Thigh Support Fan And Separating Net
REPLACING FANS FOR BACKREST ON FRONT SEAT
Necessary preliminary tasks
Concept
The wireless charging tray enables the following
functions to be performed without cables:
Charging the rechargeable battery of a mobile
phone with Qi capability and of other mobile
devices, which support the Qi standard.
Charging the BMW Display key.
Connect the mobile phone to the ex