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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Recirculated-air mode
Concept
You may react to unpleasant odors or pollutants
in the immediate environment by temporarily
suspending the supply of outside air. The system
then recirculates the air flow within the vehicle.
Operation
Press the button.
The LED is illuminated when recirculated-
air mode is switched on. The
Seats, mirrors, and steering
wheel
Manually adjustable seats
Forward/backward
Thigh support
Seat tilt
Backrest width
Lumbar support
Height
Backrest tilt
Electrically adjustable seats
Backrest width
Forward/backward, height, seat tilt
Backrest tilt
Lumbar support
Adjusting the head restraint
Height
To lower: press
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