2006 sienna ce, passenger and both sliding doors won't unlock with key or fob

SOURCE: 2005 Toyota Sienna Sliding Door Won't Open

Have 2005 Sienna and its Driver side door was not openning. Cheap dealer fixed it himself in front of me. After opening the doors plastic assembly while sitting inside with a screw driver. Then he bent the clip towards left where the metal wire is connected. If you guys want to see what he did i would record a video and upload for you guys. Let me know at [email protected]

SOURCE: both manual sliding doors on my Toyota Sienna will not open

If you can remove the inner door panel you will see a maze of cables running to the various locking points on the sliding door. If the cable going to the FRONT latch on the sliding door is broken (or in my case, simply dislodged inside the door) the door acts as if it is frozen shut.

The front cable is short, and easily replaced even by a newbie mechanic.

SOURCE: 2005 Toyota Sienna XLE - Automatic sliding door not closing.

This may or may not work depending on exactly what is wrong with the door, I cant tell what is wrong without looking at it directly however:
You can try starting with all doors closed and unlocked, keys in hand disconnecting the battery and letting the vehicle sit for 2 min or so, then reconnect the battery. Put the key into the ignition and turn it to the on position but do not start the van. Next press the button to disable the power sliding door for the drivers side, then manually open the door fully, wait 5 seconds, then close it manually fully. Press button the button again to re-enable the power sliding door, then try to use it with the automatic feature either by pulling the handle or using your remote, this may or may not work depending on if the door has somehow become de-initialized (it should work now) however if something is broken inside the door closing mechanism or door closed/open sensors, the door will continue to malfunction.

SOURCE: driver side power sliding door

Check the owner's manual for a fuse diagram including the high amp fuse box under the hood as most likely the fuse has blown. Lubricate any moving parts on the door as this may have caused the blown fuse.