So it has been since last Wednesday I have had the HVAC config changes to Single Zone ATC. My truck came as single zone mtc, and I changed it to multi zone ATC.. I cannot get it to change back to Single zone ATC or MTC. It is stuck on multi zone ATC..It works ok, just the second zone does nothing. I'd like to have it behave correctly. Any tips on getting the single zone atc to take?
I went back an read your posts and want to make sure you understand that the AHBM doesn't have anything to do with your HVAC. AHBM is auto high beam module which relates to the mirrors sensor to trigger the high beams on and off.
The HVAC settings are located in vehicle config 3. Did you follow the steps below? Also, the dual zone ATC won't do anything if your truck came equipped with single zone MTC. How did your truck come configured (radio/HVAC)? The correct procedure on changing from single zone MTC to single zone ATC are as follows.
Vehicle Configuration 3: HVAC Configuration:
Select:
Dual Zone ATC
Disconnect AlfaOBD app & shut off the truck for a few minutes and you must wait for the Dual Temp sliders to display on the 8.4 radio before proceeding with single zone ATC change.
(Battery disconnect between can speed up the radio/BCM reset for changes, especially with a UAx radio)
Select:
Single Zone ATC