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