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My AC / heater and heater fan has stopped working. The fuse seems fine and Toyota seems lost.
its in an 07 sienna.
Please help.
Is there a relay or other fuse I need to look at?
Thanks
 

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Is that the interior fan or the fan that cools off the radiator?

Did you check the fuses/relays inside the fuse block?

Regards, JC.
 

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I just had a similar problem. It ended up being low on R134a. I had a shop vacuum the lines to check for a leak and it's all good now! Ice cold A/C. I hope she doesn't leak again!

Regards, JC.
 

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Wow, sorry I didn't see this post earlier. Yes, there are relays in the underhood box to check out before you waste more time and money. If you still need it, I'll post a diagram of the fuse and relay spots.
 

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My AC / heater and heater fan has stopped working. The fuse seems fine and Toyota seems lost.
its in an 07 sienna.
Please help.
Is there a relay or other fuse I need to look at?
Thanks
If the fans don't come on chances are that you're refrigerant has leaked out. The AC system will shut down to protect the compressor from burning out. On my 98, I had it professionally charge with a tracer die. After 2 days, I could see that the rear AC lines were leaking. After trying to repairing it and throwing money away and learning about incompetent mechanics, my final option was to cap off the rear lines and no longer have rear AC.

Toyota dealers will not do this type of repair. I have details at the following link.

http://www.siennachat.com/forum/81-problems-issues/10058-98-sienna-finding-ac-leak.html


Hope this helps. I would get it charged up to find the leak first and then go from there if I were you. Rear lines and repair could cost you $1000 easily. Blocking off the rear lines is less than $100 and then the cost to recharge the system. The van cools off fine with only the front AC unit working. You may need to set the fans on max, until its cool

Regards, JC.
 

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Hi JC,

please let me know if your link is working.

Fred


If the fans don't come on chances are that you're refrigerant has leaked out. The AC system will shut down to protect the compressor from burning out. On my 98, I had it professionally charge with a tracer die. After 2 days, I could see that the rear AC lines were leaking. After trying to repairing it and throwing money away and learning about incompetent mechanics, my final option was to cap off the rear lines and no longer have rear AC.

Toyota dealers will not do this type of repair. I have details at the following link.

http://www.siennachat.com/forum/81-problems-issues/10058-98-sienna-finding-ac-leak.html


Hope this helps. I would get it charged up to find the leak first and then go from there if I were you. Rear lines and repair could cost you $1000 easily. Blocking off the rear lines is less than $100 and then the cost to recharge the system. The van cools off fine with only the front AC unit working. You may need to set the fans on max, until its cool

Regards, JC.
 

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2015 Sienna Limited Premium
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Hi JC,

please let me know if your link is working.

Fred
2012... Two owners and three forum software platform transitions ago. We have hundreds of dead/broken links as a result. I'm sorry....
 
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