BMW 5 Series: Gateway
Body Domain Controller (BDC)
Body Domain Controller (BDC)
BDC functions
The Body Domain Controller BDC is responsible for the following functions:
- Gateway
- Electronic immobilizer
- Terminal control
- Central locking system
- Exterior lights
- Power windows
- Horn
- Interior light
- Wash/wipe system
- Vehicle data storage
- Data transfer for Condition Based Service (CBS)
Fuses in the BDC
The following components are protected by fuses in the BDC:
- Audio operating facility
- Operating facility for assist systems
- Operating unit for light
- Power windows
- Heated rear window
- Trunk function module
- Integrated automatic heating / air conditioning
- OBD2 interface
- Power Control Unit
- Rain‐light‐solar-condensation sensor
- Steering column switch cluster
- Telematic Communication Box
- Outside door handle electronics
- Vertical dynamics platform (electronics)
- Central locking system
Relay in the BDC
The following relays are located in the BDC:
- Terminal 30F
- Power window regulators
- Central locking system
- Heated rear window
- Headlight cleaning system
Gateway in the BDC
The central gateway module (ZGM) is integrated in the BDC. It is a control unit within a control unit.
The task of the ZGM is to connect all the data bus systems to each other. By connecting them in this way, it is possible to use information from the individual bus systems on a generalized level. The central gateway module is able to implement different protocols and speeds on other bus systems.
The programming data for the control units is transmitted by Ethernet to the vehicle via the ZGM.
LIN controller in the BDC
The BDC is the gateway for the following components at the local interconnect network bus:
- Exterior mirror, left and right
- Switch block, driver's door, front passenger door
- Steering column switch cluster
- Light switch
- Intelligent Safety button
- Audio operating facility
- Inside mirror
- Rain‐light‐solar-condensation sensor
- Roof function center (interior lighting)
- Comfort seat, rear passenger compartment, left and right
- Electrical steering column adjustment
- Wiper
- Operating unit, center console
- Power distribution box, rear
The following control units are connected to the BDC via LIN, but the BDC has only a wake-up function and not a gateway or primary function:
- Battery charging unit
- Intelligent battery sensor
- Electric fan
- Active air flap control
- Digital Motor Electronics
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Control units on the MOST bus
Head unit
Head unit
On the G30, the head unit can be operated by touch at the CID in addition to
operation via the
controller. In the case of optional equipment with gesture control, selected
funct
Control units on the K-CAN2
Roof function center (FZD)
Roof function center (FZD)
Depending on the vehicle equipment the roof function center FZD includes the
corresponding
components for:
Alarm system
Control, slide/tilt s
Control units on the K-CAN3
Frontal Light Electronics
Frontal Light Electronics Right and Left
The control units Frontal Light Electronics Right (FLER) and Frontal Light
Electronics Left (FLEL) are
installed in the correspondi
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Using the voice activation
system
Activating the voice activation
system
1. Press the button on the
steering
wheel.
2. Wait for the signal.
3. Say the command.
The symbol on the Control Display
indicates
that the voice activation system is
active.
No other commands may be available. In this
case, operate the function via iDri
Heat management module
The function of the heat management module is similar to that of the heat
management module of the
B58 engine.
B58TU engine heat management module
Coolant output towards the coolant pump
Electric split cooling valve
Coolant outlet to coolant radiator
Electrical actuator, heat management modu
