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Need Help - No heat after Pre-LCI IHKA (high) to LCI IHKA (high)

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Need Help - No heat after Pre-LCI IHKA (high) to LCI IHKA (high)

Old 12-15-2015, 03:12 PM
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Join Date: Mar 2012
Location: New York
Posts: 35
My Ride: E60 545i
Model Year: 2004
Default Need Help - No heat after Pre-LCI IHKA (high) to LCI IHKA (high)

What's up guys, i need some help

I did a CiC retrofit a while ago but when I installed my LCI climate module i get no heat in the cabin. All the settings are correct, i did a pin 21 mod. When I swap back in my Pre-LCI module, I get heat!

Does anyone have an idea of what could be wrong?

- I'm NOT going from Basic to High, i've always had High
- I did pin 21Mod (i know that's for the fan, but i just thought I'd list it, it might be relevant)

I've read hundreds of post and i can't find anything, i've looked at all the wiring diagram that relates to this. I've compared my MAN files with all that I can find posted in multiple forums (posts relating to CIC retrofits) and still can't find a solution. The only thing I can think of is that my control module is busted and I don't want to buy another one until i'm sure it's busted. Any thoughts?

Did anyone who did a Pre-LCI to LCI climate mod have any heat issues??
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Old 12-29-2015, 12:19 PM
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Join Date: May 2013
Location: Brooklyn
Posts: 131
My Ride: 530I
Model Year: 2005

I did the swap a few months ago and had a similar issue.
Make sure you are familiar with the newer unit and how to use it as it works completely different.
you may have it set to cold which I did. Another thing is to check that the system module that controls the climate is updated to the latest software.. when I did the CIC install I had to get my L7 amp software updated as there was no sound and the climate software for the same issue you are having
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Old 02-12-2019, 03:14 PM
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Join Date: Jan 2019
Location: Madison, WI
Posts: 4
My Ride: 2010 535XI touring (E61)

FYI, I had no stored codes regarding the HVAC system.

I have noticed several instances of this car not being real happy after sitting for several days, battery discharge warnings. I investigated and found the battery in the car is about 62AH vs the oem 110AH that it's coded for. I am going to verify that the car isn't being fussy about the battery being undercharged by charging it overnight then trying the defroster one last time.
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