BMW 3: Low-voltage Vehicle Electrical System
BMW 3 Series G20 (2018-2025) 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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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 driving readiness or Check/Analysis/Diagnosis
Transitional condition with stationary functions
Actua
Breaking-in period
General information
Moving parts need to begin working together
smoothly.
The following instructions will help you to achieve
a long vehicle life and good efficiency.
During break-in, do not use the Launch Control.
Safety information
Warning
Due to new parts and components, safety and
driver assi
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