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Toyota Highlander Heating Ventilation and Air Conditioning

165 messages,  Last post on May 22, 2013 at 6:58 PM

You are in the Toyota Highlander Forum.

What is this discussion about? Toyota Highlander, SUV

Messages Page 9 of 17

#79 of 165 A/C Problems by leean21

Jul 20, 2009 (4:20 pm)

ok, let me try this again, without hitting the enter button before i put a message....anyways, I just recently started having the problem of hot air blowing through while my ac is on, then switching back to cold air....i have tightened the nut behind the temp switch and am hoping that is the fix....thanks so much for all the information...you guys are awesome
 

#80 of 165 Re: A/C Problems [leean21] by rut

Jul 20, 2009 (5:26 pm)

Replying to: leean21 (Jul 20, 2009 4:20 pm)
I actually took it apart and found a broken wire connecting the temp knob to the ckt board. It was a 3 wire cable soldered on each end. I removed the cable and replaced it with 3 individual wires. Problem solved.

#81 of 165 Re: Highllander AC/heat control problem [ladyk1] by jorge6088

Aug 02, 2009 (2:51 pm)

Replying to: ladyk1 (Mar 17, 2008 6:05 pm)
I have same problem and tightened the knob. This has reduce problems but once in a while still get switch from cool to heat. How do I fix the broken cables? are there any specific instructions on how to do this?

#82 of 165 Re: a good way to thank you for helping me [kburger1] by jorge6088

Aug 02, 2009 (2:58 pm)

Replying to: kburger1 (May 27, 2009 11:14 pm)
I have same problem and tightening knot did not fix it. I like to try to solder wires. Could you please send me more specific instructions on how to remove ac unit? thanks.

#83 of 165 circuit board removal by rut

Aug 02, 2009 (6:42 pm)

You have to remove the complete unit out. it just kinda snaps out if I remember correctly. there is a circuit board that you have to remove. There are a few screws holding it in. Be careful handling the board as to not emit any static electricity that would take out the ic's on the board.
 
You will find a small circuit board mounted where the temp control is. Go assuming you have taken the knobs off in front and removed the nuts on the controls, you can unclip the board and pull it out. There is a 3 wire cable connecting the circuit board to the temp switch. Mine had a broken wire at the small board. Be very careful trying to solder this back. It requires a small tip and not too much heat.
 
Hope this helps. Better than spending $800 for a new one or $300 for a used one.
 
Rut

#84 of 165 Re: '01 Highlander Aircond problem [slowcar] by Alirob

Aug 07, 2009 (2:38 pm)

Replying to: slowcar (Jul 20, 2009 2:35 pm)
Slowcar, I have exactly the same problem on my 02 Highlander. Have you found a solution yet?
Rob

#85 of 165 Re: '01 Highlander Aircond problem [Alirob] by slowcar

Aug 25, 2009 (1:26 pm)

Replying to: Alirob (Aug 07, 2009 2:38 pm)
No...It seems like you and I were the only ones having this problem. It must be some thing very simple that prevents the freon from going to the driver side's vent. Hate to bring it in the dealer and spend $thousands$ .... Please post it here if you found some thing. Thanks.

#86 of 165 Re: '01 Highlander Aircond problem [slowcar] by rohoo

Aug 28, 2009 (6:29 am)

Replying to: slowcar (Jul 20, 2009 2:35 pm)
slowcar,
I have the exact same problem on my 01' Highlander. The temperature range is approximately 12-18 degrees warmer on the drivers side as opposed to the passenger side. I will let you know if I come up with anything.

#87 of 165 Re: a good way to thank you for helping me [kburger1] by cps2698

Sep 06, 2009 (9:07 am)

Replying to: kburger1 (May 27, 2009 11:14 pm)
Just wanted to thank the original poster regarding the ac temp issue and the loose nut. Just as you said, my husband took the knob off and the nut was loose. Boy am I glad I was reading this yesterday. It saved us a lot of money!

Messages Page 9 of 17

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