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Old 10-22-2011, 09:51 AM #31
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Great info in this! I just bought one and have the same issue. I have not had time to look at it yet, but pretty sure this will help.

I have no clue why people would think going from "LO" setting to 65 and getting heat would be normal or even the way the A/c is suppose to work though.
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Old 04-19-2017, 10:18 AM #32
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Quote:
Originally Posted by rtuck1 View Post
I just went through this after installing a brand new head unit. As it turns out the interior temp sensor for the a/c unit was unplugged. It is located by your right knee on the drivers side. If you look at the plastic plate under the steering wheel you will see an area that has slits in the plastic. The sensor is right behind that piece of plastic. Simply plug in the sensor or if it has gone bad it may need to be replaced. That is my experience and i had the same exact situation occur.
Thank you!! I installed a new head unit last night. Today, my A/C blows only at LO. Hopefully this is what happened.
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Old 11-08-2017, 09:20 PM #33
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Originally Posted by progress4m View Post
I have seeing same issue as you described when temperature sensor inside of the truck (on lower part of the dash) is unplugged, has bad connection or not functional..
I would check that first.
this.. fixed my issue

http://www.toyota-4runner.org/2839404-post7.html
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Old 11-09-2017, 11:58 AM #34
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Wow, that was the old thread, but I am sure glad that my info still useful and helped to fix the problem!
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Old 11-09-2017, 01:16 PM #35
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Originally Posted by progress4m View Post
Wow, that was the old thread, but I am sure glad that my info still useful and helped to fix the problem!
lol yes but that's what forums are for i've had this issue since the stereo shop installed my CarPlay HU (2 mo) and its been bother me.
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Old 08-17-2019, 04:46 PM #36
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Same thing happened here. Anything above LO and the system was blowing hot air. I pulled the panel under the steering column ( two screws) and sure enough the sensor and tube were disconnected. I re-connected, buttoned the panel up and the climate control worked as it should.
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Old 07-12-2020, 01:11 PM #37
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I had the same problem, AC blowing hot on any temperature setting other than Lo. Interior temp sensor was not completely plugged in. Easy fix! I had been fixing something under the dash a few weeks ago and must have slightly disconnected it. It looked like it was plugged in, but it wasn’t “clicked” in.
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Old 07-21-2020, 05:02 PM #38
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Add me to the list of people who got cold air on lo and hot air on 65°. It’s 82° and sunny here today, so my interior was definitely hotter than 65°.

My cabin temp sensor was also disconnected and not attached to the lower dash panel. (I had my lower dash apart when I installed my 1” body lift recently.) It was a simple and free 5-minute fix. Gotta love this forum!
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