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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Warning function
Light in the exterior mirror
Acute warning
If there is a risk of collision, the light in the exterior
mirror flashes and the steering wheel vibrates.
A Check Control message is displayed at
the same time.
If necessary, an active steering intervention then
takes place to prevent collisions and main
Adaptive light functions
Concept
Adaptive light functions enable dynamic illumination
of the roadway.
General information
The adaptive light functions may consist of one
system or multiple systems, depending on the
equipment version:
Adaptive Light Control.
Cornering light.
Activating
Press the button on the light
swit
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