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Toyota Highlander Heating Ventilation and Air Conditioning

107 messages,  Last post on Nov 16, 2009 at 5:13 PM

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What is this discussion about? Toyota Highlander, SUV

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#58 of 107 Re: [djmetak] by wwest Sep 12, 2008 (8:02 am)
Replying to: djmetak (Sep 11, 2008 11:18 pm) Try "normalizing" the window by holding the switch in the up position for about 20 seconds after the window is fully up.
#59 of 107 Recirculation stop and starts by AnthonyVWSmith Feb 01, 2009 (2:01 pm)
Highlander 01 with the Auto Climate controls. Recently had the engine replaced and the AC works fine except when I put on the recirculation button. If the weather is cold and I turn on the recirculation button, it remains on... but when the weather is warm it seems to reach a certain point and then the recirculations starts to turn itself off and on, off and on. Any ideas Replies to this message: wwest (Mar 29, 2009 9:04 am) AnthonyVWSmith (Apr 25, 2009 6:53 am) tidester (Apr 25, 2009 9:45 am) and 1 more...
#60 of 107 '04 Highlander evap core replacement by karen42 Mar 28, 2009 (6:56 pm)
my '04 Highlander A/C started blowing warm air. A check at my repair shop showed no freon so they added some and checked for leaks. Had cool A/C about 24 hrs, then hot air again. Freon added again but no leak ever found and again had cool air for about a day. The condenser and clutch are fine so I was told the evap core is probably the problem Also, when I just have the vent control on and the temp know turned too the cool side, hot air will come out when I go around a curve or corner. Very weird. Any ideas? I was told replacing evap core was very labor intensive therefore big $$. I live in an area where I need the A/C in the warm months. Thanks for any help/suggestions. Replies to this message: mikefm58 (Mar 28, 2009 7:48 pm) howza1 (Apr 21, 2009 7:16 pm) mikefm58 (Apr 22, 2009 3:55 am) janners (May 01, 2009 10:14 am) karen42 (May 01, 2009 3:21 pm) ojnucci (May 04, 2009 2:24 pm) and 2 more...
#61 of 107 Re: '04 Highlander evap core replacement [karen42] by mikefm58 Mar 28, 2009 (7:48 pm)
Replying to: karen42 (Mar 28, 2009 6:56 pm) I had a wierd similar problem like you described, but I wasn't low on freon. The air temp. in my case would also go between hot and cold by itself. Grab a hold of the temp. control knob and shake it. It should be firm. If it's loose, pull it straight out and check the nut that tightens down on the bolt. Tighten it down and use some lock tite so it won't come loose again.   Good luck and let us know if this fixes it. Replies to this message: howza1 (Apr 21, 2009 7:16 pm) mikefm58 (Apr 22, 2009 3:55 am) janners (May 01, 2009 10:14 am) karen42 (May 01, 2009 3:21 pm) ojnucci (May 04, 2009 2:24 pm) ggartner (May 04, 2009 3:04 pm) and 1 more...
#62 of 107 Re: Recirculation stop and starts [AnthonyVWSmith] by wwest Mar 29, 2009 (9:04 am)
Replying to: AnthonyVWSmith (Feb 01, 2009 2:01 pm) Many automatic systems will turn the system to fresh airflow within a few minutes if the A/C is not operating. Otherwise too much danger of moisture buildup in the cabin and the soon thereafter windshield fogging over. Replies to this message: AnthonyVWSmith (Apr 25, 2009 6:53 am) tidester (Apr 25, 2009 9:45 am) wwest (Apr 26, 2009 9:51 am)
#63 of 107 Re: '04 Highlander evap core replacement [mikefm58] by howza1 Apr 21, 2009 (7:16 pm)
Replying to: mikefm58 (Mar 28, 2009 7:48 pm) You Rock!   Just fixed my Highlander in two minutes by tighening the nut.   Car was blowing hot air even in the off position, and only hot with the AC on.   Now it works like new.   Thank You!!!!! Replies to this message: mikefm58 (Apr 22, 2009 3:55 am)
#64 of 107 Re: '04 Highlander evap core replacement [howza1] by mikefm58 Apr 22, 2009 (3:55 am)
Replying to: howza1 (Apr 21, 2009 7:16 pm) Cool, glad I could help, I've even heard from others that had taken their vehicle to their dealer and been given huge estimates to replace major components of their A/C or heater systems. I've got to believe there is a TSB from Toyota somewhere.
#65 of 107 Re: Recirculation stop and starts [wwest] by AnthonyVWSmith Apr 25, 2009 (6:53 am)
Replying to: wwest (Mar 29, 2009 9:04 am) Have now resolved the issue and it turns out to be TOO MUCH freon which causes the pressure sensor to cut out. I'm guessing that the garage I used filled the freon manually and put too much in. So if you have the situation where you can get cooling when the re-circulator is switched off, but when you put on the re-circulator the A/C continally switches on and off, then check the freon levels. Replies to this message: tidester (Apr 25, 2009 9:45 am) wwest (Apr 26, 2009 9:51 am)
#66 of 107 Re: Recirculation stop and starts [AnthonyVWSmith] by tidester HOST Apr 25, 2009 (9:45 am)
Replying to: AnthonyVWSmith (Apr 25, 2009 6:53 am) it turns out to be TOO MUCH freon   I didn't know that was possible. Thanks for the info.   tidester, host SUVs and Smart Shopper Replies to this message: wwest (Apr 26, 2009 9:51 am)
#67 of 107 Re: Recirculation stop and starts [tidester] by wwest Apr 26, 2009 (9:51 am)
Replying to: tidester (Apr 25, 2009 9:45 am) Too much refrigerant and the pressure switch that activates the compressor is always open, especially if the OAT is HIGH.

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