See also:

Unlocking the trunk (mechanical key)
The trunk lid swings upwards when opened. Therefore, make sure that there is sufficient clearance above the trunk lid. If the trunk cannot be unlocked with the SmartKey or KEYLESS-GO, use the ...

Closing
WARNING To prevent possible personal injury, always keep hands and fingers away from the trunk opening when closing the trunk lid. Be especially careful when small children are around. ...

Storing the ball coupling
WARNING Do not carry the ball coupling in the vehicle interior if it is not secured. Otherwise, you and others could be injured by the ball coupling being thrown around if you: - brake sharply ...