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Old Jun 29, 2010 | 07:27 PM
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AC head unit

My AC head unit would not come on when I started the truck. No power completely dead. I put the truck into park and turned it off, waited a few seconds and started the truck again,and the head unit was now working. This has happened twice over about a month. I took the truck to the dealership and they show no thrown codes. Any help here would be appreciated.


2006 F350CC, SWB, 6.0PSD.
 
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Old Jun 29, 2010 | 07:39 PM
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The A/C would not throw a code as it is mechanically controlled, independent from the ECU. Sounds to me like you might have a lose wire. Do the lights illuminate?
 
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Old Jun 29, 2010 | 07:39 PM
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Oh wait a minute, do you have the digital climate control unit like found in the Lariat/King Ranch?
 
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Old Jun 29, 2010 | 07:55 PM
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Yes it is the electro unit in the lariat. When it would not come on it was completely dead no illumination. When it powered up after a restart it would illuminate. The service Mgr told me they have had lots of probs with the expedition electro head units, they havent seen too many happen to the superdutys.
 
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Old Jun 29, 2010 | 07:57 PM
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Ah, sorry mate, those things are beyond my abilities. Wish I had it in my SD Lariat though, they are cool.
 
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Old Jul 4, 2010 | 09:11 PM
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My Excursion did this this evening. I shut the truck off, restarted and it worked fine. Very strange.
 
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Old Jul 5, 2010 | 09:01 AM
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Update, Spoke with the dealer, they replaced the electro unit this morning with a new one. Thay had a F250 come in wiith a similar prob last week. It was covered under the extended warrante.
 
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Old Jul 5, 2010 | 09:04 AM
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Cool. My I am glad I bought the ESP. Figures it would act up for the first time with my mother in the back seat.
 
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Old Jul 5, 2010 | 10:39 AM
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You've got a climate control unit on its way out.

Start with this thread, and work your way back through the threads referenced:
https://www.ford-trucks.com/forums/8...l-failure.html
 
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