Question about 2002 Toyota Sienna

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Cooling Fan wont turn off and kills battery

I recently purchased an 06 toyota sienna with 23k miles on it from a Ford dealership. i was told it was still under a factory 3 yr - 36k mile warranty but after a call to the toyota dealership and running the vin # they informed me it was bought in 05. With such low miles i assumed way to much from the salesman.

Anyway...I noticed yesterday after my wife got home, the headlights on the sienna did not turn off. Normally they do after it's been parked for a few minutes. And i also noticed when i went to manually turn off the headlights the cooling fan was still on. The car was in the driveway for at least 30min and after i turned off the head lights the fan was still running. I didnt think nothing of it until i tried to start it up this morning and it didnt start. Any suggestions on what i can do to fix this? I already called the dealership and waiting to hear back. Any advice is much appreciated!

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  • Dizz-831 Feb 17, 2009

    Thanks Toyota Ed! Is this something i can fix in the driveway or do i need to take it to a shop to get this fixed? If this is a "do it yourself", if you could provide a part # and some basic instructions would be great. I'll make a trip to the part store to pick up my repair manual real soon.

    Thanks again!


  • Dizz-831 Feb 17, 2009

    Toyota Ed,

    I cant thank you enough for the info you've provided. I actually got the dealership to take care of it after escalating the issue to senior management. I literally bought the car less than a month ago! I was talking to a tech and something i didn't mention in the original post was this water leakage into the cab. It's been dumping rain for about 2 weeks in Central Cali, Salinas to be exact. A couple days ago i went to move the van and when i pulled out a shot of cold water poured down my back from the sun roof and it was closed! I inspected the top of the van and everything looked solid. This afternoon driving to drop the van off at the dealership as i turned or slowed down i could hear water slushing from side to side and eventually leak down to the floor board. Anyway, the tech figured it was that leak probably causing the relay to short which sounded plausable to me. So just in case that Sienna returns to your shop w/ the same problem and it's been raining, that could be the culprit!

    Thanks Again Ed!


  • Toyota Ed May 11, 2010

    Actually, there are several relays for the cooling fans.



    What I would do is shut off the vehicle, and raise the hood. As the cooling fan runs, extract relays until the fan stops. Using a small screwdriver, pry the relay open from the bottom, where the lock tabs are. Pull off the relay cover. Look to see if the metal plate is physically making the contacts to touch. If so, pull on the center plate to release the contact. Look for rust at both of the pivot points of the center plate. Save your money on a manual; this info is not published anywhere. This is what FixYa is all about...giving you help from our experience. Let me know what you find out with the relay.



    I would def replace the relay, but you prob will not find one at the parts store. Dealer item only.

  • Toyota Ed May 11, 2010

    One of the cooling fan relays is mechanically seized. I had this identical situation in my shop last week.

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  • 1,861 Answers

Glad to hear that you are all fixed up!

The sunroof leak is caused by a blockage in the drain tubes. Please make sure that your dealer cleans the sunroof drains.

A FixYa rating (4 blue diamonds) would be greatly appreciated for my assistance. Thanks!

Posted on Feb 18, 2009

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