To open the rear door, turn the handle clockwise until it stops.
If the tailgate is locked, insert the key and unlock the handle.
To close, lower the tailgate and push it down. After closing the tailgate, check by pulling it up that it is correctly locked.
When the lock slot is in a horizontal position, the back can be opened without a key. To lock the door, insert the key and turn it counterclockwise until it stops.
Keep the tailgate closed while driving. Thus, you avoid the risk of exhaust gases entering the passenger compartment.