On my 2007 Toyota Sienna, the right side rear passenger sliding door has started to give me problems by not wanting to open when I hit the over head door switch, or press the door open button on the key fob or the switch at the side door pillar but will work when I pull the outside door handle or the inside door handle. I was going to take the van in to a toyota dealer but my wife made me feel guilty when she said that I'm a mechanic and I should be able to fix it myself so I got some help online by doing research and sure enough, there are many complaints about these doors on the web. I went to this website townhall-talk. and found a man with a similar problem who was able to fix his van. Based upon the symptoms he was having and it as similar to mine, I was able to do a simple test that he suggested which in turn nailed the problem down to the door lock actuator on the right rear door. Toyota wants about $1200.00 to fix it. I looked up the part online and found the dealer price at around $450.00 I found it at another website for about $125.00 Well, that's a lot cheaper than paying $1200.00 to have someone fix it especially when I'm a mechanic. Now I just need to come up with the cash to buy the part.