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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 Technical data

The high-voltage battery unit of the G20 PHEV is manufactured by BMW itself in Dingolfing /Germany. The cells of the high-voltage battery unit are supplied by the Korean company Samsung SDI. The high-voltage battery unit was also developed by BMW AG itself. The battery cells used in the hig

 Wiper system

Switching the wipers on/off and brief wipe Switching on Press the lever up until the desired position is reached. Resting position of the wipers: position 0. Rain sensor: position 1. Normal wiper speed: position 2. Fast wiper speed: position 3. Brief wipe and switching off Press the lever do

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