Electrical Child-Proof Lock (Option)
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.
Child-proof locking disengages the rear internal door handles. The switch is on the control panel in the driver's door. The rear window lift mechanisms cannot be operated either when the function is activated.
There is a mechanical control as standard that can be switched on if you do not want the rear doors to be opened from the inside at all. There is a mechanical lock in each side rear door and switching on the control on the relevant door only affects that door.