BMW 3: Low-voltage Vehicle Electrical System
BMW 3 Series G20 (2018-2026) Training manual / Low-voltage Vehicle Electrical System
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Voltage supply
The 12 V vehicle electrical system of the G20 PHEV is essentially the same as
the electrical system of
the G20. The main difference lies in the fact that the power supply is no longer
by the al
Start-up system
Starter motor
The combustion engine B46 can be started via the conventional starter motor
and the electrical
machine.
The following table shows when and under which conditions the respective start
Terminal control for driving readiness
Terminal control from driver's view
Vehicle condition - DRIVING
Vehicle condition - RESIDING
Vehicle condition - PARKING
Transitional condition for establishing driving readiness,
ending driv
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Last calls
The last outgoing, missed, and incoming calls
are transferred to the vehicle. Depending on the
equipment, the calls are transferred from the
main phone and additional phones.
Displays
1. "COM".
2. If necessary, "Telephone".
3. "Recent calls".
4. The last calls are displayed.
Filtering call list
1
System overview
G20 PHEV, components of refrigerant circuit
Combined expansion and shutoff valve (interior)
Combined expansion and shutoff valve (high-voltage battery unit)
High-voltage battery unit
Refrigerant lines to high-voltage battery unit
Low-pressure connection (for drawing off, evacuating and f
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