Question about 2005 Toyota Highlander

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Air/heat control switch

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i have a 2005 toyota highlander the the air/heat control switch has gone bad. they want $1000.00 to replace it and i only have 39000 miles on the car. i know several orther people that has had the same problem. i there any thing that i can do to reduce the price. and if i do fix the problem with another switch then whats the say that it want happen again. because the switch is defective from the factory. Dean

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  • taritacross Jul 18, 2008

    I am having the same problem with my air control. It is blowing hot air when the ac is turned on. The dealer says I need to replace the entire control panel which costs around $1200.00. It seems a lot of people are having the same problem. I wonder why it has not been a recall to fix this problem.

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  • 28 Answers

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Posted on Jul 21, 2008

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HIGHLANDER "NO-HEAT" CONDITION (W/O Automatic Air)


Does your Toyota Highlander have no heat?
Here are two possibilities
The retainer nut for the temperature control is loose, which leads to a wire that is broken from the temperature control sub-circuit board, to the main circuit board.

If the retainer nut is loose, the unit can be repaired. This will entail removal of the heater control from the dash, disassembling it, identifying the broken wire, and resoldering the broken wire back in place.

If you are not skilled in disassembling the dash and the heater control, and not skilled in soldering, this job is best left to a professional. The alternative ti repairing the broken wire is costly. The replacement control is roughly 900 dollars, plus installation. A qualified technician can repair your control in less than 2 hours.
If you need further info, please post a question on the FixYa site.

on Dec 05, 2008 | 2005 Toyota Highlander

1 Answer

My heat was working only on occasion in my 2005 Toyota Highlander. I took in for repair and they replaced thermostat, upper and lower rad hose, and flushed the cooling system. That did not fix the...


if they flushed the cooling system, the heater core was already done with that.. what temp thermostat was put in..are the blowers working or not..youmay have a heat control valve stuck shut..

Dec 22, 2013 | 2005 Toyota Highlander

1 Answer

2005 toyota highlander, what is the correct tire pressure? Cannot get the air pressure light out after pressing the reset button. What do you suggest. I put 32 lbs of air in the tires


Look on the end of the drivers door or door jam for a sticker that should list the pressures and tire size. I had air removed from my tires and installed nitrogen. It keeps the right level better and doesn't cause the sensors to go bad like air can. $5 a tire at most tire dealers.

Nov 08, 2010 | 2005 Toyota Highlander

1 Answer

2005 Highlander .... turned on defroster to clear foggy windows then switch to reg "body/feet" heat ... but heat would not/does work ... help!!! it worked fine yesterday HELP


They had problems with the heater switch loosening up. Sometimes it can be fixed sometimes the whole heater assy has to be replaced. The heater knob will pull off. Pull that off and then there is a nut that should be loose. Tighten that nut but be careful not to over tighten because you break this piece and you will be buying the heater assy. After you tighten that reinstall know and see if that fixes it.

Jan 20, 2010 | 2005 Toyota Highlander

2 Answers

A/C will suddenly send out heat. Fiddling with knobs seems to help. What's wrong?


You have a broken wire connection between the temperature control knob and the circuit board behind the center dash console. Vibration causes the failure and once the control knob gets loose the solder connection fails.

For someone that knows how to remove the dash unit and can re-solder a couple of new wires this fix should take no more than 1 hour. Make sure that you apply loctite to the heat control knob spindle nut when you re-assemble it.

The dealer quoted me 750 dollars to fix this issue and I found out that it's a common failure for this year. I fixed mine virtually for free but it took some tools and about an hour of my time.

Jun 02, 2009 | 2005 Toyota Highlander

2 Answers

A/C will suddenly send out heat. Fiddling with knobs seems to help. What's wrong?


The nut that holds the middle knob has gotten loose and the knob (which is probably loose) has caused a wire behind it to break. I found the fix on the internet with details and pictures and all you need is to take the cover off and solder the broken wire back. I don't know where the website is now but search "toyota highlander blows hot and cold" and you might find it. Good luck. don't let dealership put a new control panel in.

May 10, 2009 | 2001 Toyota Highlander

1 Answer

Highlander no heat


Pull off the heater control knob, and tighten the nut that is behind it.

Jan 30, 2009 | 2005 Toyota Highlander

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