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2011 superduty no A/C

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Old Feb 16, 2011 | 10:26 AM
  #1  
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2011 superduty no A/C

I'm posting this here because I am told the systems are different on the diesel models thatn gas models of the 2011 SD.

I have a less than 2 month old 2011 crew cab. A couple weeks ago the left rear turn lamp and brake lamp quit working like a burned out bulb. The dealer figured out that it was not a bulb, but rather, a body control module.

When I picked the truck up from that repair, it was warm out so I turned up the A/C. Surprise surprise, no cold air.

Back to the dealer who could not figure anything out. A week or two later, they replaced a cab sensor and that didn't fix it either.

Now (two days later) they are communicating with the Ford engineering dept and have come to no conclusion. They say they think it may be a power train control module, but they aren't sure.

The seat coolers work fine. The compressor and fan work fine if you jumper to it, but something is evidently preventing the command signal from turning on the Compressor.

Has anyone else had a similar issue?

I am getting quite weary with dealing with their ineptitude and am seriously considering making use of my state's lemon law.

Please help if you can.
 
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Old Feb 16, 2011 | 10:31 AM
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sounds like a bad BCM to me... maybe rdenis will comment - he seems to be the most knowledgeable here about these systems
 
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Old Feb 16, 2011 | 10:47 AM
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They originally said they thought that and that the engineers said they had experienced issues with them, but as of this morning, I'm told that the engineers are saying that the BCM doesn't control that, but rather the PCM does.

Thanx for the input!
 
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Old Feb 16, 2011 | 10:52 AM
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what about the hvac control module? did they test or replace that?
 
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Old Feb 16, 2011 | 11:10 AM
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That, I don't know.

I do think though, that your truck is the same as mine though, except that I put a camper shell on mine.
 
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Old Feb 16, 2011 | 11:35 AM
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Be careful when threatening the Lemon Law. I tried taking advantage of it in NJ and was denied because the state said that I had to prove it was a safety issue.
 
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Old Feb 16, 2011 | 12:51 PM
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Originally Posted by Nu2deisel
I'm posting this here because I am told the systems are different on the diesel models thatn gas models of the 2011 SD.

I have a less than 2 month old 2011 crew cab. A couple weeks ago the left rear turn lamp and brake lamp quit working like a burned out bulb. The dealer figured out that it was not a bulb, but rather, a body control module.

When I picked the truck up from that repair, it was warm out so I turned up the A/C. Surprise surprise, no cold air.

Back to the dealer who could not figure anything out. A week or two later, they replaced a cab sensor and that didn't fix it either.

Now (two days later) they are communicating with the Ford engineering dept and have come to no conclusion. They say they think it may be a power train control module, but they aren't sure.

The seat coolers work fine. The compressor and fan work fine if you jumper to it, but something is evidently preventing the command signal from turning on the Compressor.

Has anyone else had a similar issue?

I am getting quite weary with dealing with their ineptitude and am seriously considering making use of my state's lemon law.

Please help if you can.
Wow, Lemon law over the A/C...I would be a whole lot angrier at the dealer than at Ford. Poor dealership performance is the at the crux of most of the problems like yours. I would be looking for a new dealer today. JMO

Regards
 
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Old Feb 16, 2011 | 01:53 PM
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Originally Posted by 11350KINGRANCH
Be careful when threatening the Lemon Law. I tried taking advantage of it in NJ and was denied because the state said that I had to prove it was a safety issue.
In my state it doesn't have to be a safety related issue. I really don't see what other recourse I have if they can't figure out how to fix it. It gets way too hot here to not have A/C

Originally Posted by rickatic
Wow, Lemon law over the A/C...I would be a whole lot angrier at the dealer than at Ford. Poor dealership performance is the at the crux of most of the problems like yours. I would be looking for a new dealer today. JMO

Regards
I don't think that the other dealers are going to be too anxious to do difficult warranty on a truck that I bought somewhere else. Besides, even the Ford engineers can't seem to figure out what is wrong.
 
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Old Feb 16, 2011 | 02:47 PM
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they bill out the warranty work the same at any dealer. It doesn't matter where the truck was purchased.

I'm definitely not trying to argue, but I can't wrap my head around the ford engineers not being able to figure it out. This isn't *that* complex... a couple hours spent probing around and testing should yield a pretty straightforward result. I'd follow rick's advice and find another dealer, STAT
 
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Old Feb 16, 2011 | 03:45 PM
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The service writer has shown me all the printouts of the communication with th engineers, and evidently the pin tests and everything else has not yielded any answers.

I also need a vehicle during the day for work, and I don't think that another dealer would furnish me a free rental.

Do you think the service writer has phonied all this stuff up?

I'm not trying to argue either, just sort it all out.
 
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Old Feb 16, 2011 | 03:50 PM
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Have them replace the HVAC module in the dash is my recommendation.
 
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Old Feb 16, 2011 | 10:08 PM
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Originally Posted by rickatic
I would be looking for a new dealer today. JMO

Regards
I agree with rickatic.
A good tech with a computer, multi meter, and wiring diagram, should be able to pinpoint the problem in a few hours at most. Being in the commercial HVAC field we have to troubleshoot systems waymore complex than the ones on a vehical. Sad to say not all techs are good at troubleshooting, in all fields, not just automotive. JMO
bastech
 
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Old Feb 17, 2011 | 10:27 AM
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Its back with the dealer today. Evidently the biggest problem is the lack of electronic flow charts due to the fact that it is a 2011 vehicle.

Today they are supposed to run some tests to determine if the issue is the PCM.
 
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Old Mar 9, 2011 | 12:20 PM
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Update:
After 4 or 5 attempts to fix it and a conference with the owner of the dealership, a Ford field engineer was called in. He said that it was a software issue with the BCM, installed a new program, and voila! Now I have A/C.

However, now I am getting poorer mileage even when the a/c isn't running , and the gear selection display has disappeared from my dash display.

I'll take the A/C though!
 
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Old Mar 9, 2011 | 06:58 PM
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we had one that had no commuacation with the hvac controller, a bunch of src codes annd trailer light concerns. turned out to have burnt the main dash harness up. it was not to far from behind the radio/ havac controllers. I think it had soemthing to do with the trailer break controller or the guys trailer that caused the issue
 
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