The hatchback is just a door. If the passenger doors are unlocked, then you can open it whether the car is running or not. Same goes for the fuel door - if the driver's door is unlocked you can open the fuel door.
So I guess the answer to your question is that the Unlock button is the button in the cockpit.
Welcome to the forum, by the way!
So I guess the answer to your question is that the Unlock button is the button in the cockpit.
Welcome to the forum, by the way!