Question about 2005 Toyota Highlander
I recently purchased a used 2005 Toyota Highlander. When I have the a/c on, it will suddenly send out hot air until I fiddle with the knobs. What's going on? 2005 Toyota Highlander, heat coming out of dash vents and floor even when the fan is in the off position and the temp control knob is in the cold position. Same happens when turning a/c on. Could this be a knob problem? I have a 2005 highlander, when my a/c unit is on it cools for a good minute. Suddenly it is blowing out hot air. When I start rotating the a/c dail back and forth it starts back blowing cold air again. Sometimes when I am driving on ruff pavement it starts blowing out hot air also. But when I rotate the A/C button to the coldest temp, it starts back blowing cold air for a minute or two, then right back to blowing hot air.
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.
Posted on Jun 21, 2009
From what you describe it seems like it may need a a/c heater control asy.I checked for a/c control bullitans and there is not any at this time.
Posted on Jun 02, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 19, 2011 | 2005 Toyota Highlander
Aug 12, 2010 | 2003 Toyota Highlander
Mar 30, 2010 | 2005 Toyota Highlander
Jan 20, 2010 | 2005 Toyota Highlander
Sep 25, 2009 | 2005 Toyota Highlander
Sep 11, 2009 | 2005 Toyota Highlander
May 19, 2009 | 2005 Toyota Highlander
May 10, 2009 | 2001 Toyota Highlander
1,713 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: