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check out this website it tells you how to repair the handle since it cost about $65.00 to buy a new one. http://www.findonefindall.com/toyota-sienna/
Upon further inspection, the rear door handle assembly on the 2002 Toyota Sienna IS the same as that shown on the Find One Find All website, so never mind.
Where is the short at? What is malfunctioning?
It is impossible. Buy a new one. Don't waste your time! I found a good fix @ http://www.findonefindall.com/toyota-sienna/ Please contact Toyota (phone number in your owner manual) to document this defect, the more complaints they receive, the better the chance of a recall. A more complete URL to the page referenced in the second answer is ... http://www.findonefindall.com/toyota-sienna/siennareardoor.htm I used that successfully to repair the broken rear door latch on my 2000 Toyota Sienna. ("Buy a new one" is ~$65. I made the repair with tools and screws lying around the house in about an hour's time. Repair at the dealer reportedly is ~$300.)
The following link has instructions, diagrams and pictures showing how to make this repair easily and inexpensively: http://www.findonefindall.com/toyota-sienna/siennareardoor.htm
http://en.allexperts.com/q/Chevrolet-Repair-808/99-Suburban-Interior-Door.htm
I would check with Toyota and make sure its not covered by recall. Our 2004 had both of them fail and Toyota replaced them for free.
You can get a replacement part from RockAuto for about $65 and have it locally installed for under $100.
It is not too hard. You will have to remove the door panel, then you will see how the interior handle is riveted to the metal door frame work. You will need to drill these rivets out and install the new handle with either rivets or screws.
Skoda has multiple models, please specify which one you are interested in.
As far as I know, Haynes and Chiltons haven't published their manuals covering the 2004 Sienna. So the only one available appears to be Toyota's manual, available from any dealer's parts department or on ebay. From: Mark in Ohio (posted 5/12/08)
Should be able to access after removing interior door panel