Locking separately
The trunk lid can be locked separately using the switch in the front center armrest.
▷ Trunk lid secured, arrow 1.
▷ Trunk lid not secured, arrow
2.

Slide the switch into the arrow 1 position. This secures the trunk lid and disconnects it from the central locking system.
When the center armrest is locked, the tailgate cannot be accessed. This is beneficial when the vehicle is parked using valet service. The infrared remote control can be handed out without the key.
See also:
Weights
...
Compact Design
Just as BMW's compact 3 Series ranks below the midsize 5 Series, the
five-seat X3 sits in the shadow of the larger X5. The styling clearly says BMW,
but it's the multi-paneled look of earlier mode ...
Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e ...
