Front A/C not working at all (2 Viewers)

[Fyrestare]

100 series, A/C was working just not blowing cold, took it to a mechanic to get some other stuff done, and had him top off the refrigerant, but I got the vehicle back and the buttons for the A/C don’t even work. The previous owner installed a Tesla style vertical screen, so the front ac buttons on the screen are completely grayed out and don’t work. The ac control panel in the back works just fine, and the rear ac can even still be turned on from the front. The screen is also reading -51F. I checked the ambient temperature sensor near the radiator for resistance, and got like 1.2 ohms, so that’s functioning properly. I assume this is some sort of electrical problem, but I’m not very knowledgeable about electrical stuff, so I’m open to any suggestions at this point

 

[Nightfall]

100 series, A/C was working just not blowing cold, took it to a mechanic to get some other stuff done, and had him top off the refrigerant, but I got the vehicle back and the buttons for the A/C don’t even work. The previous owner installed a Tesla style vertical screen, so the front ac buttons on the screen are completely grayed out and don’t work. The ac control panel in the back works just fine, and the rear ac can even still be turned on from the front. The screen is also reading -51F. I checked the ambient temperature sensor near the radiator for resistance, and got like 1.2 ohms, so that’s functioning properly. I assume this is some sort of electrical problem, but I’m not very knowledgeable about electrical stuff, so I’m open to any suggestions at this point

A few more things, as a fellow resident/vehicle driver/owner

1. Internal sensor (below the key) reads 1.3kohms as well
2. No voltage getting to pins on the AC Amplifier
3. No fan at all (except in rear)

The temperature sensor reading -51f seems to be the issue - as resistance in the sensors rises, temp is lower, so it's likely an electrical issue but even with the wiring diagrams we're having trouble tracing it.