The sliding door latch is not working see the picture of the latch unit.
Toyota porte sliding door problems.
Pulling and holding the handle for a few seconds might open the door but this is only a temporary workaround.
How to fix the driver s side sliding door on 2003 toyota sienna.
When you press a button to automatically open the sliding door it makes noise attempting to open the door but fails.
Toyota found the sliding door motor could stall when the door was operated during conditions when there were problems that impeded the opening of the door such as when the door was frozen with ice.
If it only makes some sound without opening the door then there must be something wrong with the latch.
Try pulling the handle to open the sliding door.