Last post on Oct 13, 2011 at 9:09 PM
You are in the Toyota Sienna
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Toyota Sienna, Electrical, Van
#11 of 12 Re: Electrical Issue [jabrown]
Oct 04, 2011 (1:14 pm)
Chances are it's the Integrated Circuit Relay which seems to fail and causes strange electrical issues(side door won't open/close, seat belt lights stay on, overhead lights stay on, et al)
I replaced the Integrated Circuit Relay with Door Control, P/N 82641-08020 because of similar electrical problems. Part costs $200 dealer only. If you are military, ex-military or senior citizen, many Toyota dealers offer a 10% discount on parts, so ask for it.
It took me about 4 hours to put it in. Don't try this unless you have infinite patience, an advanced set of tools, a LED trouble light, a thick sleeping bag to lay on, and some basic knowledge about auto electrical. You will have to disconnect the battery, remove the two dash panels under the steering wheel, remove the driver seat, the driver's side running panel and the driver's side kick panel. Then, laying on your back (on the sleeping bag) with your head under the driver's side dash compartment, you have to completely disconnect most of the connectors to the fuse box (located on the firewall) so you can drop it down. Once the fuse box is down, remove the old unit which is mounted on top of the fuse box. Then, mount the new one. This is one of the more challenging ones I've tackled because of the tight space you're working in and compactness of the wiring. It did fix my problem and I haven't had electrical issues since (knock on wood). PM if you wish.
#12 of 12 Re: Electrical Issue [jabrown]
Oct 13, 2011 (9:09 pm)
I don't know if this is the integrated switch that everyone is talking about.. It might be.. But i do know that there were odd issues on mine too, and it turned out to be an issue with water seeping into the van through the rear hatch. After cleaning up the water, and adjusting the rear door.. the problem went away... I would check to see if your carpets are wet... Good luck..