8.4" to 12.1" screen replacement

[dougstheman86]

So BCM changes definitely didn’t take, volume knobs not working


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[dougstheman86]

Only working on the steering wheel


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[dougstheman86]

I will wait until tomorrow when my OBDLINK MX gets here and attempt to make the BCM changes.


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[dougstheman86]

Do any of them needed BCM changes enable the back up camera? That isn’t working either...


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[Cruzman05thgen]

I went from 5” to this and everything powered up after repinning the connector that goes to the screen. I have no Hvac control though. I also don’t have the volume or tune buttons working. Any help? A little background.... this is a 2019 bighorn originally came with the 5” uconnect system 7 speed fan HVAC manual controls.

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[dougstheman86]

Did you do the changes in the BCM?


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[Cruzman05thgen]

I have done nothing other than plug everything in.


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[dougstheman86]

Heck post #309 that’s what you need to do


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[dougstheman86]

Check*


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[Cruzman05thgen]

What about my HVAC controls?? I have read that with the 8.4” you had to buy a separate module that goes in the panel on the passenger side ? Do I have to do the same? Wiring?


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[dougstheman86]

Not that I’m aware of...


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[Jimmy07]

What about my HVAC controls?? I have read that with the 8.4” you had to buy a separate module that goes in the panel on the passenger side ? Do I have to do the same? Wiring?


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Since the 12” screen isn’t capable of single zone manual temperature control, which your BCM is programmed for, you’re gonna have to use AlfaOBD to change it to dual zone ATC and try to run the screen controls in manual mode synced up. It’ll never truly run right unless you add the in car temperature sensor and the four in-duct temperature sensors. I made a Y cable for a member on another forum so he could run the HVAC off of the old manual controls until he gets the temp sensors, I’m working on a harness to add them.

 

[Cruzman05thgen]

Has anyone on this forum purchased the 12” set up from infotainment?


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[Jimmy07]

Has anyone on this forum purchased the 12” set up from infotainment?


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I know of a few who have. Is that where you got yours? If so, that’s why your controls don’t work at all. Their genie sets the wrong setting in the BCM, and they don’t know how to get them to work when going from a 5” to a 12”.

 

[dougstheman86]

I just hope this other OBD tool I have coming in tomorrow solves my issues I’m having. Knobs don’t work....


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[Cruzman05thgen]

I didn’t get mine from infotainment, I sourced all the pieces and purchased them all. Plugged it all in after repinning the one connector and everything worked with the exception of HVAC controls and volume/tune knobs. I was wondering if someone that did get the unit from infotainment would be willing to rent out their programmer..... if not I’ll go to the dealer and see if they can/will do it.


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[Cruzman05thgen]

This is the back of my 5” unit. The top right plug as viewed from the back is blue.... there is no blue connector on the 12” module. Where does that plug into? I have a red, white, blue, grey plug and the main harness. Everything has a spot on the 12” module except for the blue...... any help?


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[Jimmy07]

I didn’t get mine from infotainment, I sourced all the pieces and purchased them all. Plugged it all in after repinning the one connector and everything worked with the exception of HVAC controls and volume/tune knobs. I was wondering if someone that did get the unit from infotainment would be willing to rent out their programmer..... if not I’ll go to the dealer and see if they can/will do it.


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The genies from infotainment are VIN locked. The dealer will be a crap shoot if that sales code populates to enable for your VIN. It *might* populate if your trim level truck was offered with auto temp control as an option.
Edit to add: The dealer definitely won’t be able to get the settings changed for your volume and tune knob to work.

 

[Cruzman05thgen]

The genies from infotainment are VIN locked. The dealer will be a crap shoot if that sales code populates to enable for your VIN. It *might* populate if your trim level truck was offered with auto temp control as an option.

So I’d have to ask them to see if my level truck was offered with auto temp? I know it did not come with it originally. Could I figure that out somehow with my vin? Is there anyone in the forum that could look that up? Anyone dealer affiliated here?


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[Cruzman05thgen]

So I’m def going to have to go the alphaobd route?


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