Tacoma AC and Temperature Sensor Issue

I had something similar happen on my Tacoma. Is your temperature gauge reading incorrectly, or does the AC just refuse to turn on completely? Could also be related to a coolant leak affecting the cooling system, which messes with engine cooling and the HVAC system altogether. Have you checked the coolant level recently?

Coolant levels are fine. The AC is just dead, won't engage at all. And yes, I should have mentioned that the temperature gauge fluctuates wildly, seemingly caused by problems with the temperature sensor. The readings are all over the place. You mentioned that you had a similar issue: was it also related to the AC?

Yep, fluctuating temperature gauge plus a dead AC sounds very familiar. Turned out to be exactly as you suggested: problems with the AC control unit. I'd suggest taking it to a trusted workshop to confirm the likely cause before replacing parts, since messing with the refrigerant isn't something you can do at home.

Thanks for confirming. I will take your advice and bring it to the shop to take care of it. Hopefully, it's just the AC control unit, but your experience is useful.