Unlocking Tailgate (2008-)
WARNING: This page is about a different car, the 2010 Volvo V70, 2009 Volvo V70, and 2008 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.
The tailgate/trunk lid is "locked" and "unlocked" at the same time as other doors if an unlock command is received from the remote key. The tailgate/trunk lid can also be unlocked separately using a dedicated button on the remote key. The tailgate/trunk lid can also be unlocked separately using a switch on the light switch module (LSM).
The lock motor is directly connected to the Central electronic module (CEM).
In practice there is no "locked" position for the lock on the tailgate/trunk lid. The difference between locked and unlocked is whether the central electronic module (CEM) will activate the lock motor or not when the switch on the tailgate/trunk lid is pressed.