BMW 3: Locking the doors and windows in the rear
BMW 3 Series G20 (2018-2025) Owners Manual / Transporting children safely / Locking the doors and
windows in the rear
General information
In certain situations it may be advisable to secure the rear doors and windows, for instance when transporting children.
Doors
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Unlock or lock the safety switch on the rear doors with the integrated key.
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Child safety latch is unlocked.
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Child safety latch is locked.
The door can now be opened from the outside only.
Safety switch for the rear
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Press the button on the driver's
door.
This locks various functions so that they cannot be operated from the rear.
READ NEXT:
Start/Stop button
Concept
Pressing the Start/Stop button
switches drive-ready state on or
off.
Steptronic transmission: the
drive-ready state is switched on
when you depress the brake pedal while pressing
the Start/St
Auto Start/Stop function
Concept
The Auto Start/Stop function helps save fuel.
The system switches off the engine during a
stop, for instance in traffic congestion or at traffic
lights. Drive-ready state remains switched on.
SEE MORE:
Overview
Buttons on the steering wheel
With steering and traffic jam
assistant:
Cruise control on/off.
With steering and traffic jam
assistant:
Select function.
Without steering and traffic jam
assistant:
Cruise control on/off.
Store current speed.
Speed Limit Assist: take over suggested
speed manual
Engine identification
B46TU engine
Engine identification - transverse mounted shown
B48TU engine
Engine identification - transverse mounted shown
Engine number
Engine identification
The 7-digit engine identification is located on the crankcase in the area of
the mounting for the
crankshaft alignment pin. The first
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