2007 mustang AC/Heater controls messed up after sound system install - Ford Mustang Forum
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post #1 of 2 (permalink) Old 08-24-2014 Thread Starter
Snowblindsniper's Avatar
Joined: Aug 2014
Location: Ocala
Posts: 1
2007 mustang AC/Heater controls messed up after sound system install

I recently changed out my head unit on my 2007 v6 mustang. I read about a lot of people having AC issues after changing their head units, but my issue is slightly different. The blowers work fine and so does the cold and hot air, but the AC only blows cold when set to full cold, if I move the knob even one tick away from full cold, the air turns fire hot. The rear window defrost button also does not turn off. I checked the wires and connecters for the AC controls and everything looks fine. Is there anything else besides a bad climate control that can cause this problem?

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post #2 of 2 (permalink) Old 08-24-2014
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Joined: Aug 2008
Location: Kent County
Posts: 1,023
Sounds like the installer messed up the climate control wiring. May have bent a pin on the connector(s). I have a 2007 and also changed my head-unit. It was difficult to reattached the 2 climate control connectors( big hands and little space), but everything worked fine after I reattached them. I used a mirror to make sure they were connected. You should not be experiencing these problems after a head-unit install. If you had a shop do it - take it back and tell them it worked fine before the head-unit install.

2006 GT, Strut Tower Brace, Gas Hood Struts, FR Intake Plenum cover, Metal Fuse Box cover, Moroso brake reservoir cover, Rear shock tower brace, Front Bumper Lip Spoiler, JVC DVD Head unit w/ back-up camera, satellite Radio and USB input, 2 - 12" sub-woofers, 4 - 6"x8" speakers, 2 - 6.5" speakers to replace the door subs, 3 amplifiers, LED lights under the hood and in the trunk, chrome e-handle on parking brake handle, chrome cup holder trim, and trunk lid cover with running pony emblem.

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