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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 Steptronic transmission: BMW Digital Key

Concept BMW Digital Key allows the vehicle to be unlocked and locked, as well as started, with a compatible smartphone. General information BMW Digital Key varies by country and may be unavailable. To unlock and start a vehicle with a compatible smartphone, a digital key must be installed on this s

 General information

Depending on the vehicle equipment and country version, various settings for opening and closing are possible. These settings are stored for the driver profile currently used. Unlocking and locking Doors Via iDrive: 1. "CAR". 2. "Settings". 3. "Key button settings". 4. Select the symbol. 5. Sel

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