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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Hazard warning flashers
The button is located in the center console.
The red light in the button flashes when the hazard
warning flashers are activated.
Warning triangle
The warning triangle is located on the inside of
the trunk lid.
Press on the release, arrow 1, and swivel the
cover down, arrow 2.
First-aid kit
Gener
Navigation data
General information
Navigation data is stored in the vehicle and can
be updated from a USB storage device.
Current navigation data is available from a dealer's
service center or another qualified service
center or repair shop or in the ConnectedDrive
Store.
Depending on the data volume, the naviga
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