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
SEE MORE:
Airbags
Front airbag, driver
Front airbag, front passenger
Head airbag
Side airbag
Knee airbag
Front airbags
Front airbags help protect the driver and the
front passenger by responding to frontal impacts
in which safety belts alone would not provide adequate
protection.
Side airbag
In the event of a
Speed Limit Info
Speed Limit Info
Concept
Speed Limit Info shows the currently valid speed
limit in the instrument cluster and, if necessary,
the Head-up Display.
General information
The camera in the area of the interior mirror detects
traffic signs at the edge of the road as well
as variable overhead sign posts.
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