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      07-16-2014, 08:13 AM   #1
sdhotwn
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Coding Problem - AC/HVAC Malfunction

Hey guys,

Anyone seen an issue where after coding the HVAC system is always off every time you start the car, pops on as soon as you touch a button AND if you hit max A/C it shuts off the HVAC? Not sure if the coder messed something up, or if the HVAC unit itself has a problem. I think they are going to look at it later this week, but wanted to see if you guys had ever seen the issue.

Thanks!
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      07-16-2014, 10:40 AM   #2
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Did they code IHKA 3003 MEMORY_OFF ?
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      07-16-2014, 10:46 AM   #3
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I will do some digging. The only coding that was supposed to be on the HVAC was for it to remember the AC switch setting.
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      07-16-2014, 10:58 AM   #4
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Quote:
Originally Posted by sdhotwn View Post
I will do some digging. The only coding that was supposed to be on the HVAC was for it to remember the AC switch setting.
The AC switch as in snowflake as in air conditioner compressor on/off? Or entire IHKA on/off at car start/stop?
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      07-16-2014, 11:08 AM   #5
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In my case when i set MEMEORY_OFF to aktiv, the fan will always be off when you start the car as shawn posted in the other link
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      07-16-2014, 12:58 PM   #6
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Awesome. I forwarded that on to the coder to see what he says. Thanks!! If that explains my weird Max AC toggling the whole system that'd be interesting too!
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      07-16-2014, 12:58 PM   #7
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I'm a controls engineer, so I really need to spend some time digging around on here to get the coding gear myself. I would have fun tinkering!
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      07-16-2014, 01:22 PM   #8
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ya believe it or not I think I have more fun coding than driving lately lol

there is another setting to remember air recirculating also

IHKA 3003 MEMORY_UMLUFT
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      07-16-2014, 01:48 PM   #9
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Everything i need regarding software access etc, is pretty well covered in threads here on the forum correct? I did light digging and just the Esys software location was the thing I haven't dug in to sufficiently.
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      07-16-2014, 01:57 PM   #10
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ya you need, enet cable, e-sys and e-sys token that's it...
and a cheat sheet doesn't hurt either :-D

http://www.2addicts.com/forums/showthread.php?t=1010377
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      07-17-2014, 08:52 AM   #11
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The coding change you referenced above fixed it. Apparently it is something "new" in the last 4 months or so of production according the coder after he talked to some friends.

I have all my bits now for coding as well... be a few weeks before I can check things out though.
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      07-17-2014, 10:32 AM   #12
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      07-17-2014, 12:17 PM   #13
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Quote:
Originally Posted by sdhotwn View Post
The coding change you referenced above fixed it. Apparently it is something "new" in the last 4 months or so of production according the coder after he talked to some friends.

I have all my bits now for coding as well... be a few weeks before I can check things out though.
Except it is not new, and IHKA => MEMORY_UMLUFT & IHKA => OFF_MEMORY have always existed, and always functioned this way.
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      07-28-2014, 09:27 AM   #14
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I think he screwed up/didn't know the coding fully and waived it off as that. Who knows. Car works perfectly now so I'm good. Cable showed up, downloaded software, just haven't had time to grab a key. Will do that soon.

I'm not 100% sure if I'm sold on the anti-dazzle headlights. I got flashed 3 times by oncoming traffic in an hour drive which makes me worry they are too bright. We'll see.
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