BMW 3: Low-voltage Vehicle Electrical System
BMW 3 Series G20 (2018-2025) 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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Intelligent Safety
Concept
Intelligent Safety enables central operation of the
driver assistance systems.
General information
Depending on how the vehicle is equipped, Intelligent
Safety consists of one or more systems
that can help prevent an imminent collision.
Front collision mitigation.
Evasion Assistant.
Inte
Integrated key
General information
The driver's door can be locked and unlocked
without the vehicle key using the integrated key.
The integrated key also fits the glove compartment.
Safety information
Warning
For some country versions, unlocking from the
inside is only possible with special knowledge.
Persons w
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