BMW 5 Series: Power distribution box, front right
.png)
Power distribution box, front right
A relay for terminal 30B is installed in the front right power distribution box.
Consumers are supplied with terminal 30, terminal 30B and terminal 15N and provided with corresponding fuse protection by the front right power distribution box. Terminal 15N is supplied from the front power distribution box by the rear power distribution box.
Power distribution box, front left (PHEV Version only)
.png)
Power distribution box, front left
A relay for terminal 30B is installed in the front left power distribution box.
Consumers are supplied with terminal 30 and terminal 30B and provided with corresponding fuse protection by the front left power distribution box.
Power distribution box, rear
.png)
Power distribution box, rear
The following relays are installed in the rear power distribution box:
- 2 Relay's, terminal 30F
- 2 Relay's, terminal 30B
- Relay, terminal 15N
- Relay for rear window heating
All relays are bi-stable relays. The relays area activated by the Body Domain Controller via LIN. The hard-wired terminal 30B relays of the two front power distribution boxes are activated via the rear power distribution box.
Body Domain Controller
The Body Domain Controller (BDC) is responsible for the terminal control.
A terminal 30F relay is installed in the BDC.
A number of consumers are supplied with terminal 30 and terminal 30F and provided with corresponding fuse protection via the BDC.
PCU with vehicle electrical system assistance measure
Modern vehicles have a high energy consumption due to the many electrical consumers. As a result, there is a high demand on the battery particularly in phases in which the combustion engine is not running and the alternator supplies no energy (e.g. engine start/stop phases).
In order to protect the vehicle battery, a DC/DC converter is installed in the Power Control Unit (PCU) and an auxiliary battery in the engine compartment in the G30.
The preconditions for the direction of the energy management are calculated from the use of the vehicle. When the engine is running the auxiliary battery is charged from the conventional vehicle electrical system. During the phases in which the combustion engine is not running, e.g. automatic start/stop function, the energy is supplied from the auxiliary battery into the conventional vehicle electrical system.
The Power Control Unit PCU contains a control unit which is connected to the PT-CAN2 and a DC/DC converter with a power of 500 W.
On vehicles with the equipment electric active roll stabilization, this is supplied by the auxiliary battery in the engine compartment.
READ NEXT:
24 V Electronic Power Steering
The greater weight of the engines in the G30 on vehicles with 8-cylinder
engines results in a higher
front axle load. This has the effect that the required power of the steering
assist increases. Du
Introduction, Vehicle conditions
Introduction
The terminal control in the G30 is identical to the terminal control of the
G12. In the G30, the vehicle
is always in the right condition from the point of view of the customer. The
ter
SEE MORE:
Cold-start phase
Point A in the heat management module circuit diagram designates the cold
start with an engine that
has completely cooled down.
Cold-start phase, Bx8TU engine
In the cold-start phase, the coolant circulates exclusively via a bypass in
the coolant pump. The rotary
valve in the heat management mod
Remote Control Parking
The Remote Control Parking assistant became available for the first time in
the G12. This assistance
system enables the vehicle to be maneuvered in and out of a parking space
remotely using the
BMW display key. The system assists the driver to park in tight parking bays or
enclosed spaces (s
