The central locking system
button on the driver's door to lock all doors/tailgate and press 
to unlock. Unlocking
Press the button on either of the front doors to unlock all doors and the tailgate.
Lock buttons on the rear doors*
The lock buttons in the rear doors lock/unlock each door respectively.
Locking
button on either of the front doors (both front doors must be closed). All doors/tailgate are locked. The rear doors can also be locked individually by pressing the lock button on the respective door. A rear door must be closed before it can be locked.
Alternative locking when parking2
The central locking button on the front doors can also be used to lock the vehicle when you leave it. To do so:
Note
Please be aware that locking the vehicle in this way makes it possible to lock the remote key in the passenger compartment. To help avoid this, lock the vehicle from the outside by pressing the lock button on the remote key.
If the vehicle is locked using the central locking button, be sure that the remote key is in your possession before closing the door.
Automatic locking
All of the doors/tailgate will lock automatically when the vehicle begins to move.