CITROËN DS4 Owner's Handbook Manual page 103

Unlocking using the key
Turn the key forwards in the driver's door
lock to unlock the vehicle completely.
Each unlocking is confirmed by rapid flashing
of the direction indicators for approximately
two seconds.
According to the version of your vehicle, the
door mirrors unfold at the same time.
In low light, unlocking also brings on the
welcome lighting, both interior and exterior
(see "Visibility").
Selective unlocking of the boot
Press the central button on the
remote control to unlock the
boot. The doors remain locked.
If selective unlocking of the boot is deactivated,
pressing this button also unlocks the doors.
Don't forget to lock the boot again by
pressing the closed padlock button.
Programming the unlocking
The complete or selective boot
unlocking parameter is set via the
vehicle configuration menu.
Selective unlocking of the boot is
activated by default.
101
Access