The warning light on the dial turns on (on certain versions together with the message on the display) when one or more doors, the boot (indication fitted on some versions only) or the bonnet are not properly shut.
Symbols 
shown on the multifunction
display indicate incomplete left/right door closing.
With doors and boot open, if 4 km/h speed is exceeded the buzzer will sound (only for versions with reconfigurable multifunction display).
IMPORTANT On versions not fitted with electric door lock, no warning message will be displayed if door is not perfectly closed or is left open.
See also:
Suspensions
...
Central door locking system
From the outside
With the doors closed, fit and turn the key in one of the front door locks.
From the inside
With the doors closed, press (to lock) or lift (to unlock) one of the front door
knobs ...
“Follow me home” function
This function allows the illumination of the space in front of the vehicle.
Turning the function on
With the ignition key at STOP or removed, pull the left-hand stalk towards the
steering wheel an ...