Question about 2004 Toyota Highlander

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Climate control not working properly

Too cold w/ a/c, can't adjust properly. Can't adjust heat properly either. Told by dealer that it's a " Header", the center control, for temp, that's bad at $600-700 to replace w/ min. labor. Would like to replace myself with used parts. Any info where to find and what it's called? Located in SE PA

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  • ilikebeer Oct 29, 2008

    Manual A/C. Happens w/ heat and A/C.

  • Rees901 Nov 12, 2008

    same problem with my 2002. wont switch to heat. got an estimate of $900 to replace last winter, which I couldnt afford at the time. the repair man tinkered with it and set it on heat which lasted me until the summer when i had to switch it back to cold. now with winter arriving i'm faced with the same prospect. if you figure out a cheap way to repair it, please share.

  • martyn_james Nov 20, 2008

    I'm being quoted well over $1000 to fix this same problem; found a number of similar reports on the web

  • biggunn Nov 25, 2008

    I do have soldering skills how can i fix it??

  • Anonymous Dec 23, 2008

    I have a 2004 Highlander. I have a similar issue with the blower changing to cold air even when I have the temperature knob in the red zone. If I twist the knob back and forth a bit, the heat comes back. Sometimes I have to set the dial all the way to hot to get heat started. I thought maybe the thermostat was cutting in and out. Perhaps my problem is a worn contact in the knob?

    Any advise?
    Thanks,
    No Three Putts


  • mabuski Dec 31, 2008

    I also have had the same problem. Zero degrees and no heat, I used to ba able to twist the knob a few times to get it to work again, but this time there was no fixing it this way. I was quoted $1000 to repair at the Dealer.

    they are going to fix it but I want to know if there is or was anything I could have done to not pay $1000. I need heat.

  • deroberts11 Jan 07, 2009

    My climate control doesn't work properly in my 2004 Highlander either. It will be putting out heat and the next thing you know it has switched to the air conditioner. That's not a good thing when you are depending on the heat of the defroster to keep the snow and ice off your windshield. I find if I leave the knob off and wiggle the shaft it will usually switch back to heat. The heat and air conditioner has never worked properly in this vehicle. Toyota admits this has been a big problem and offered to fix it at a cost of $800.00! Why not recall the faulty part???

  • pmichell6216 Mar 10, 2009

    Having problems with temperture adjusting from hot to cold. Just found out its a temp control switch at the tune of 1000.00$. Any suggestions on how to fix this for less money.

  • Toyota Ed May 11, 2010

    Question: is it AUTO A/C or Manual?

    And, do you have soldering skills?

    I am in PA, also...SW

    Pls comment back

    Toyota Ed

  • Alex
    Alex May 09, 2012

    These guys are fixing it for a very reasonable price and in a timely manner:http://www.modulerepairpro.com/Highlande...

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If you're willing and able, you can fix it yourself. you have to pop off the big plastic frame. then 6 bolts to remove the unit. then unplug. then four screws to remove the radio, you repair the unit by re-soldering the ribbon cable or removing and replacing it with single wires. the ribbon cable is between the knob's little circuit board and the main circuit board. that's it.

or you can find more detailed instructions at tundrasolutions.com

Posted on Jan 14, 2009

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Sorry about the delay, the site did not update your response to me. Send me your e-mail addresses at fixya_toyota_ed@yahoo.com; I will send you detailed instructions on how to rectify your situations, biggunn, martyn and rees.
Thanks for choosing FixYa for the solution to your situation.

Posted on Dec 23, 2008

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I have had limited success in removing the knob and tightening the 12 mm nut on the shaft, but usually the damage to the potntiometer has been done and the switch will have to be replaced

Posted on Dec 20, 2008

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