8.4 Uconnect a/c not blowing cold

[Blakem17]

i upgraded from a 5.0 to the 8.4 my truck is a single zone and i got a dual zone bezel can i change this with alpafa obd ? just need help i have no cold ac now it just blows hot thanks

 

[SitKneelBend]

i upgraded from a 5.0 to the 8.4 my truck is a single zone and i got a dual zone bezel can i change this with alpafa obd ? just need help i have no cold ac now it just blows hot thanks

Have you tried to continually press the cold button until the AC gets cold (regardless of what the screen says)? On my upgrade, I have to press the temperature button about 15 times after it has reached the bottom or top to get max cold/heat.

 

[Blakem17]

Have you tried to continually press the cold button until the AC gets cold (regardless of what the screen says)? On my upgrade, I have to press the temperature button about 15 times after it has reached the bottom or top to get max cold/heat.

I gave this a try and still no cold air and when I go to the 7th speed it stops blowing

 

[crash68]

i upgraded from a 5.0 to the 8.4 my truck is a single zone and i got a dual zone bezel can i change this with alpafa obd ? just need help i have no cold ac now it just blows hot thanks

Yes and No.
You probably need to add the cabin temperature sensor and the windshield humidity sensor then make the changes with AlfaOBD to first to a Dual Zone ATC then once that is confirmed switch to a Single Zone ATC.
I know there are converted dual zone bezels that work on single zone systems.
Your in luck as @Mpgrimm2 can be very helpful with these modifications and sells some of the best adapters harnesses and bezels needed for the conversion on his website: https://www.m2mods4ram.com/

 

[Blakem17]

If I got a single zone I’d assume I wouldn’t have to go through all of that ?

 

[SitKneelBend]

If I got a single zone I’d assume I wouldn’t have to go through all of that ?

I have a single zone and the only issue is what I mentioned and that is only with 2018+ UAS/UAQ radios.

 

[HarryS]

You need to program the AC with Alfa OBD no matter what else you do.

 

[SitKneelBend]

If I got a single zone I’d assume I wouldn’t have to go through all of that ?

Did you come from a 4 speed blower fan?

 

[RamDiver]

deleted

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[Blakem17]

i still need some help with this i have the 7 speed fan i used AlfaOBD to program to a dual zone ATC its on the display when i did a soft reboot still no cold ac do i need to go back to a single zone now ? its 100 plus degrees here in Florida any help would be very much appreciated

 

[fermorales0731]

Did anyone ever get the fix for this I’m having the exact same issue, no cold air and if I put it on 7(highest speed) it stops