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Old 11-10-2006, 08:49 PM   #1
Join Date: Nov 2006
Location: Billings, Montana
Posts: 2
TJ defroster mode controls

Hello from Montana! I purchased a 2003 Wrangler X, and I am loving it. It did have a problem when I picked it up, and I am attmepting to fix it. The mode selector switch ( defrost, feet, torso) to set where the air blows was broken. I ordered a new part, and took the center part of the dash apart and put a new control center for it. I got everything put back together, but I cannot get the switch to change from defrost to the other modes.

When I first took the old control out and unplugged it, I heard what sounded like air escaping. I got all the connections right, and everything mated up like it should be, but cannot get the selector to change modes.

Any ideas?

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Old 05-02-2012, 01:51 AM   #2
Join Date: Apr 2012
Posts: 10
mode control switch problem

did you ever find a fix because my 2006 switch is also faulty. thanks

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Old 05-02-2012, 06:21 AM   #3
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Join Date: Jul 2011
Location: Youngstown, New York
Posts: 513
I'm not sure you're going to get a response on a 5 1/2 year old thread but I can tell you that replacing the AC/Heater Control is very easy to do and I believe for an 05/06 the control is cheaper than previous years because it was redesigned for those years (50 bucks versus 90). Check Ebay as they had the best prices when I went shopping for mine.
'12 Black Sport JK
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Old 05-05-2012, 12:38 AM   #4
Join Date: Apr 2012
Posts: 10
i cant find it online
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Old 05-05-2012, 02:13 AM   #5
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Join Date: Feb 2011
Location: Southern Oregon
Posts: 876
2000 4.0l Sport, Auto, some mods done - planning more
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Old 05-05-2012, 10:00 AM   #6
Join Date: Apr 2012
Posts: 11
does the knob turn, but the door does not change the air flow output? If so there is a vacumn hose off or broken. Usually at the back of the engine.
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Old 06-20-2012, 01:31 AM   #7
Join Date: Apr 2012
Posts: 10
broken i guess

even when i can get the fan to turn off there is still a "hiss" from the vents. and to get the fan /ac to turn off i have to- first, turn fan control to high so i can hear it; second "play" with the diverter/selector knob until the fan turns off. then i still hear the "hiss" / leak? in the dash. i dont know if its the knob or a leak.
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Old 06-20-2012, 01:33 AM   #8
Join Date: Apr 2012
Posts: 10
back of the engine where? could someone send a picture?
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Old 06-20-2012, 12:50 PM   #9
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Join Date: Feb 2011
Location: California/Nevada
Posts: 1,997
Here is a link to a thread that shows the vacuum line. It can also be leaking at the back of the mode switch. There are several hoses there. The black one is the vacuum supply. The switch then routes the vacuum from there. Make sure all the connections are good.

HVAC vacuum lines Post 11 has a diagram & others have photos.

'05 Rubi TJ Unlimited
'93 Toyota 4Runner
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Old 06-20-2012, 01:01 PM   #10
SinfulDragon's Avatar
Join Date: Jun 2011
Location: Indiana
Posts: 981
Hell of a job on searching for your problem before posting LOL

I think the HVAC vacuum lines thread should help you fix up your problem.
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Old 06-25-2012, 12:12 PM   #11
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Join Date: Jun 2012
Posts: 4
Heat/Air Director

Repeating this from another post here:

Could not get the air flow to redirect to defrost, Floor, vent......found that the engine vacuum hose had come loose from the engine. Actually, the bloody thing was totally off the port. Stuck it back on, added a cable tie to keep it snug, and everything worked as per spec ! Love free fixes. The vacuum cable port is on the drivers side of the engine block.
Thanks to the previous posts on this subject.

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