BMW 3 Owners & Service Manuals

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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 Activating the voice activation system

General information There are various methods for activating the voice activation feature: Press the button on the steering wheel. Say the wake word ›Hello BMW‹ or a personal wake word. Then say the command. No other commands may be available. In this case, operate the function via iDriv

 Wiper system

General information Do not use the wipers if the windshield is dry, as this may damage the wiper blades or cause them to become worn more quickly. Safety information Warning If the wipers start moving in the folded away state, body parts can be jammed or damage may occur to parts of the vehicle. Th

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