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Toyota Sienna Heating / Cooling

93 messages,  Last post on Nov 16, 2009 at 4:07 PM

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#73 of 93 Re: Cooling Temp Output Front/Rear [gedgoudasl] by adiehl13 Apr 15, 2009 (11:42 am)
Replying to: gedgoudasl (Apr 11, 2009 7:26 am) We have a 2005 Sienna. Oh my lord- we had this vehicle in the shop at least 4 times to fix the air conditioner. We could get arctic temperatures in the front, but the kids would get heat. I stopped at the dealer several times on a Saturday afternoon and asked for someone to come out and document this (because they never experienced this when we had it in for service). Very Frustrating. Replies to this message: gedgoudasl (Apr 15, 2009 2:10 pm) yatesjo (Apr 16, 2009 10:53 pm) gedgoudasl (Apr 17, 2009 12:57 pm)
#74 of 93 Cooling Temp Output Front/Rear by gedgoudasl Apr 15, 2009 (2:08 pm)
adiehl13 -- did you ever find out what was wrong with the AC? If it is working now what did the dealership do?
#75 of 93 Re: Cooling Temp Output Front/Rear [adiehl13] by gedgoudasl Apr 15, 2009 (2:10 pm)
Replying to: adiehl13 (Apr 15, 2009 11:42 am) Did you ever find out what was causing the rear to heat while the front was cooling?
#76 of 93 Re: Cooling Temp Output Front/Rear [adiehl13] by yatesjo Apr 16, 2009 (10:53 pm)
Replying to: adiehl13 (Apr 15, 2009 11:42 am) You do realize that the lower blowers are always warm and the upper blowers are cold right? If you have fan set on the floor level, it will just suck in hot outside air so try adjusting it to use the ceiling vents. Replies to this message: gedgoudasl (Apr 17, 2009 12:57 pm)
#77 of 93 Re: Cooling Temp Output Front/Rear [gedgoudasl] by wwest Apr 17, 2009 (8:50 am)
Replying to: gedgoudasl (Apr 11, 2009 7:26 am) Rear A/C almost always recirculate inside air whereas the front can use fresh outside air.
#78 of 93 Re: Cooling Temp Output Front/Rear [yatesjo] by gedgoudasl Apr 17, 2009 (12:57 pm)
Replying to: yatesjo (Apr 16, 2009 10:53 pm) Thanks for the comments, in my case the ceiling vents were putting out extremely hot air in the rear while the front vents were putting out cold air. So hot that it was very uncomfortable on my head. I understand that there is one AC system, one compressor and set of freon tubes, but it seemed like a vent door in the system was routing heat instead of AC to the ceiling vents. I further understand that heat is not supposed to come out of the ceiling vents, but believe me it was. Any specific knowledge of former experience of how the rear air works, as it relates to heating and cooling would be appreciated.
#79 of 93 Re: '05 Sienna A/C quit working completely [kharding] by jimox Apr 20, 2009 (9:00 pm)
Replying to: kharding (Jul 09, 2008 8:09 am) I am having the same problem. After reading your message, I tried to see if I could do what you suggested. So far, I was able to open the fuse box under the hood, but I had difficult time to identify the relay (fuse?). According to the diagram in my owner's manual (2005 Sienna LE), HTR (50A) is #57 and RR A/C is #62 (40A). It seems to me that the fuses #56-#66 are in one piece under a transparent plastic cover, and I had no idea how to remove it (I did manage to remove that plastic cover though). I am wondering if I was looking at the right place? Could you please offer some details on what the HTR relay looks like and how to remove it? Thanks in advance.
#80 of 93 Dirver Side not blow cold, but Passenger side is! by ojnucci May 04, 2009 (2:34 pm)
There is a marked difference between the driver side versus passenger side air. The passenger side blows as you would expect, but the driver only get slightly cooled air. Anyone have any experience with this? I suspect there must be a bad sensor on one side or the other, but if so how do I replace it? THank you! Replies to this message: siennageorge (May 17, 2009 5:29 am) erin602 (Jun 19, 2009 5:23 pm) ateixeira (Jun 22, 2009 11:59 am)
#81 of 93 Re: Dirver Side not blow cold, but Passenger side is! [ojnucci] by siennageorge May 17, 2009 (5:29 am)
Replying to: ojnucci (May 04, 2009 2:34 pm) Dear ojnucci,   I had the same problem on my 2006 Sienna in June 2008. I discovered yesterday the problem came back.   Sylvain
#82 of 93 ac problem 2006 sienna by wallycoxx May 20, 2009 (5:35 pm)
i have a 2006 sienna also that the ac works on the passenger side but only blows hot air on the drivers side-any suggestions on what to replace without going to the dealer for 100.00 an hour---thanks

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