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Old 09-03-2014, 10:05 PM
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RRT 14-050 Messed up my A/C

I just had the RRT 14-050 applied when I came in for first oil change. It totally messed up my A/C. Now when in Auto mode, it blows warm air through the feet vents even though it's 85 outside...

Anybody had that flash performed followed by issues with the Climate system?
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Old 09-03-2014, 10:12 PM
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Battery cable pull will fix it, seriously
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Old 09-03-2014, 10:16 PM
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Re: RRT 14-050 Messed up my A/C

Yep, will try that. I posted here before I saw your reply in the other thread.
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Old 09-03-2014, 10:54 PM
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Re: RRT 14-050 Messed up my A/C

Yep - Hard reset by disconnecting and all will be right with cabin comfort again. I had the EXACT same issue...AND had to fight my service advisor on it as he was "that's the way it is supposed to be"....AND he is one of the good guys (he must have been stumped at first).
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Old 09-04-2014, 03:40 AM
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Re: RRT 14-050 Messed up my A/C

Thanks, guys. I noticed this on the way home after having RRT 14-050 (et al) applied, but I thought I was possibly imagining it because max AC was still capable of blowing cool air.

Maybe I just need to get in the habit of pulling the battery cable every time the vehicle goes in for a flash.
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Old 09-04-2014, 05:51 AM
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The sad thing was the dealer had no idea how to correct it. They checked and rechecked everything "all operating fine"
First thing i did when i got home was pull the cable all solved. Yes i have been doing that when they flash modules. Not the radio updates but the just the module flashes.
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Old 09-04-2014, 07:50 AM
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Re: RRT 14-050 Messed up my A/C

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Originally Posted by silvermax04 View Post
The sad thing was the dealer had no idea how to correct it. They checked and rechecked everything "all operating fine"
First thing i did when i got home was pull the cable all solved. Yes i have been doing that when they flash modules. Not the radio updates but the just the module flashes.

Part of the problem is this rapid rush (for market and marketing) to add all of these "goodies" in the form of electronic and software-based controls to vehicles. It's overwhelming the dealer service departments. Seriously. Technicians are not at all trained or used to dealing with complex (relative) systems like this. They certainly aren't experts in software-based systems. Plus, in this rush, information and training is lagging the actual product. I've met quite a few service managers that are just as frustrated as you might be.

You might laugh but...historically a service department never had to think about "rebooting" a vehicle. Traditionally, the self-contained modules that did exist shouldn't ever need such a thing. Service personnel dealt with mechanical diagnosis or electrical faults that were traced in wiring, not software going berzerk and acting funky. When confronted with this, the first response is "uh..."

Some service departments I deal with are starting to make sure they hire techs that have at least fiddled with computers before to help this a bit. But, most people who are good with computer systems don't want to be auto techs, especially with the pay rates and the manual labor. The solution is to hire systems technicians...but, they typically demand more in terms of pay (think of your IT guy), and commensurately your service costs will rise.
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Old 09-04-2014, 10:30 AM
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Re: RRT 14-050 Messed up my A/C

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Originally Posted by Roadkill View Post
Thanks, guys. I noticed this on the way home after having RRT 14-050 (et al) applied, but I thought I was possibly imagining it because max AC was still capable of blowing cool air.

Maybe I just need to get in the habit of pulling the battery cable every time the vehicle goes in for a flash.
Yep yep yep - same exact thing, A/C worked on MAX setting. So my service advisor said to leave it on MAX ... lol no kidding.
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Old 09-04-2014, 11:15 AM
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AC is working again, and with the new transmission flash applied I didn't notice any oddities even though putatively the transmission has been kicked into "re-learn" mode by the battery disconnect procedure.

It would make me happier if I were able to reconnect the negative battery cable without throwing sparks.

At least I have a torque wrench to get the terminals tightened back into spec. The captive bolt for the terminal clip required more tightening than I thought it would. Oh well, that's why they make these tools.
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Old 09-04-2014, 11:21 AM
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Re: RRT 14-050 Messed up my A/C

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Originally Posted by Dan JGC View Post
Yep yep yep - same exact thing, A/C worked on MAX setting. So my service advisor said to leave it on MAX ... lol no kidding.
my dealer cranked it all the way down to 60 and said see there is a little air coming out (was 92 outside) its working some just dont use auto as we were both dripping sweat sitting in the jeep lol. they said it was working but then opened a star case on it anyway lol on that note i had in my mind i was going home to pull the cable and didnt even attempt to argue, what the hell ever lol. to them if a diagnostic comes back clean then there is no possible way there can be anything wrong with a car.
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Old 09-04-2014, 11:35 AM
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Re: RRT 14-050 Messed up my A/C

I'm happy (?) to hear that I'm not the only one with the issue or imagining things. I'll see if the problem went away tonight when I come home. If not, I'll unplug the battery, although I shouldn't really have to do that, should I? ...

I can't imagine what the poor, average consumer (who doesn't even know these forums exist) must be going through trying to get these issues solved by the service departments. Must be pretty frustrating...
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Old 09-04-2014, 12:05 PM
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Re: RRT 14-050 Messed up my A/C

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Originally Posted by silvermax04 View Post
my dealer cranked it all the way down to 60 and said see there is a little air coming out (was 92 outside) its working some just dont use auto as we were both dripping sweat sitting in the jeep lol. they said it was working but then opened a star case on it anyway lol on that note i had in my mind i was going home to pull the cable and didnt even attempt to argue, what the hell ever lol. to them if a diagnostic comes back clean then there is no possible way there can be anything wrong with a car.
Yep - I had the "well, don't use auto" comment too.....LOL. Meanwhile it is 90+ and humid, we're both sitting in the GC sweating. Don't use auto, works great on max, turn all the way down not on max and can barely feel cool so must be working right? Meanwhile on auto and also auto with remote start the thing is blaring out heat via the defroster.....LOL Seriously I had to be VERY firm with my tech (who is a good guy) and insist. He felt a bit stupid after the hard reset and all was working again. Apparently it doesn't say to do a hard reset in the bulletin. Crazy crazy. After the hard reset....works PEERRRRRRFECT.
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