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Toyota Highlander Heating Ventilation and Air Conditioning

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

You are in the Toyota Highlander Forum. Your Hosts are steve_ & tidester

What is this discussion about? Toyota Highlander, SUV


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#18 of 107
Re: EZ Airconditioner fix [cpiper] by webgood
Mar 09, 2008 (6:37 am)
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Replying to: cpiper (Mar 08, 2008 5:51 am)

This appears to be a major source of complaints, particularly as the HL's get older, and has been addressed in other posts, but maybe not so clearly. The temperature control knob in the center begins to feel a little "wobbly". It should be nice and firm when turned and you should slightly feel position indents or stops as it's turned. Pull straight-out on the knob, it comes right off, and tighten the retaining nut on the control post, push the knob back on. Same for the airflow direction knob to the right.
#19 of 107
Re: EZ Airconditioner fix [webgood] by kleutster
Mar 11, 2008 (6:12 am)
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Replying to: webgood (Mar 09, 2008 6:37 am)

I have an '04 Highlander. I will get heat intermittently, even though the engine is hot and the temperature knob turned fully to the right. Turning the knob to cold and then back to hot usually works, but often it takes 2 or 3 times. Sometimes heat is coming out, and then is just goes cold. The knob isn't wobbly. Any ideas?
#21 of 107
Re: EZ Airconditioner fix [kleutster] by webgood
Mar 11, 2008 (10:26 am)
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Replying to: kleutster (Mar 11, 2008 6:12 am)

Sorry kleutster, I don't know enough about the inner workings to venture an intelligent guess. But, just for the heck of it try checking the temp-control assembly...grab the knob with all your finger tips and pull straight out. It comes right off and will slip right back on. Check the assemble to see if it's locked-down in place with the nut. Beyond that, off to the Toyota or import car specialist. Regards, BGood
#22 of 107
Highllander AC/heat control problem by ladyk1
Mar 17, 2008 (5:05 pm)
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I fixed my Highlander's temperature control problem, thanks to looking it up and finding out about the wires that broke. Long story short, I called Toyota to see if there were a lot of complaints about this being reported. There are web sites everywhere that address this particular problem, yet Toyota doesn't acknowledge a problem. I would like to suggest that everyone who has had, or is having this problem, to please call and report it. The number is 1-800-331-4331. Perhaps they will design it better next time, or maybe even recall it (but I doubt it). Anyway, I saved about $800-$900 by fixing it myself, rather than take it to Toyota. Thank you to all who posted info about this problem.
#23 of 107
Re: EZ Airconditioner fix [webgood] by kleutster
Mar 19, 2008 (7:40 am)
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Replying to: webgood (Mar 11, 2008 10:26 am)

Hey Webgood,
After posting my problem (#19), decided to check if the nut on the heater knob post had come loose. Sure enough, it was loose enough to cause the irregular heating issue. Amazing. I'm so glad I found this forum and your posting. It saved me hundreds of dollars, I'm sure. Thanks again.
To everyone else, it's an easy thing to check and rule out.
As Webgood said, the heater knob should be nice and firm when turned and you should slightly feel position indents or stops as it turns. Mine didn't until I tightened up the nut.
Pull the heater knob straight off and feel if the nut is loose.
Keep spreading the word.
#24 of 107
Re: EZ Airconditioner fix [kleutster] by webgood
Mar 22, 2008 (1:38 pm)
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Replying to: kleutster (Mar 19, 2008 7:40 am)

Hey kleutster, that's great! I can't take credit for it...wise and experienced people discovered it and posted here on Edmunds some time ago; I just passed it on. Thanks to Edmunds and the moderators for hosting such a great and resourceful forum!!
#25 of 107
Re: EZ Airconditioner fix [webgood] by chuck58
Mar 31, 2008 (8:01 pm)
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Replying to: webgood (Mar 22, 2008 1:38 pm)

I've been using the AC to cool since it has been getting warmer over the last week and everything has worked fine up until this evening. Strangely enough, at the same time I noticed that the fuel gauge is stuck at 1/4 tank. This morning I ran it pretty much down to E before filling it up to full.
 
I plan on checking the AC knob to fix the AC problem tomorrow but have no idea about the fuel gauge. Could these possibly be related?
#26 of 107
Re: EZ Airconditioner fix [chuck58] by webgood
Apr 01, 2008 (11:12 am)
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Replying to: chuck58 (Mar 31, 2008 8:01 pm)

Chuck, I can't imagine how they could possibly be related. The AC knob is real quick and easy to check and fix, but the fuel gauge...that's a whole 'nuther can of worms (could be in the tank itself or the dash gauge or wiring between them). Sorry. Good luck & let us know. Regards, BGood
#27 of 107
Re: EZ Airconditioner fix [chuck58] by webgood
Apr 01, 2008 (12:45 pm)
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Replying to: chuck58 (Mar 31, 2008 8:01 pm)

I neglected to mention, do a search in the discussions for 'fuel gauge', you'll find some interesting info in Maintenance and Repairs that might apply. Regards, BGood

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