Climate Control Questions

[dtxlcfe]

Can someone figure out how to post a poll of everyone experiencing this issue? curious to know if its a certain trim, year, aftermarket mod that could be causing this.
Everyone thats having this issue:
1st edition, LC or 1958 trim?
2024 or 2025 model?
any aftermarket mods whatsoever? lights, wiring, cargo covers, switches etc... might be as dumb as something covering a sensor.

 

[JTP]

I will say using Carista to set hvac calibration -1c is a temporary game changer. Seems to “normalize” it somewhat

 

[MSINAL]

I will say using Carista to set hvac calibration -1c is a temporary game changer. Seems to “normalize” it somewhat

I let my carista expire, is it worth renewing to adjust climate temp offset?

 

[JTP]

For 14 dollars to mess around I think so. I have to mess around with actual temperature measurements. Haven’t figured out if there is just a calibration offset or if there is a hot/ cold mixing issue.

But for now luke warm around 67-68. Cold below and hot above

 

[dtxlcfe]

I let my carista expire, is it worth renewing to adjust climate temp offset?

I tired this both -1 and -2 and noticed no change. my carista is now expired.

 

[JTP]

Seemed to work for me all
Morning. Set it back to zero and hot air came back. I need to investigate more but as a stop gap seems to help

 

[dtxlcfe]

OK everyone, my official update since my LC spent a week at the dealer for this issue:
Problem: AC is very hot on anything besides low

After the dealer techs took my LC apart and couldn't figure it out, they called in a master tech from Toyota corporate. He worked on it yesterday and my car was ready today. That's all they can tell me until they get the master techs notes some point in the next week or 2. I will share those once I get them. Apparently he just shows up, does his job and leaves without talking to anyone.

I am suspicious that since the temps here in DFW have risen from around 35-40 to 50-55, that it is some sort of ECU/sensor issue that wasn't resolved. That maybe the master tech just didn't notice any issue and didn't fix anything. Again, I will know more on this once I get the notes. But I feel like we have all been noticing the AC issues more with the cold front that has been sweeping across the country so perhaps it fixed it self with a little higher temps...

performance after repairs: I feel sort of like he just moved the needle at which the heater kicks on BUT my AC is definitely now way more responsive. 60-65 is pretty cool but not ice cold. 65 feels pretty ambient to me. I start to feel some heat at about 67. While 70+ is definitely hotter than whatever temp you set it at, it is not MAX heat like 60+ was before. In other words, if you set it to 75 its probably a good bit hotter than 75 coming out BUT it gets hotter the more you turn it up beyond that meaning its not cranking out max heat at all at 75+ until you actually get up to the max heat of 90 or whatever it is.

Until I know what the master tech worked on and have his notes, I am not going to make anymore complaints with the dealer. it is much better than it was before although not perfect.

 

[dtxlcfe]

OK everyone, my official update since my LC spent a week at the dealer for this issue:
Problem: AC is very hot on anything besides low

After the dealer techs took my LC apart and couldn't figure it out, they called in a master tech from Toyota corporate. He worked on it yesterday and my car was ready today. That's all they can tell me until they get the master techs notes some point in the next week or 2. I will share those once I get them. Apparently he just shows up, does his job and leaves without talking to anyone.

I am suspicious that since the temps here in DFW have risen from around 35-40 to 50-55, that it is some sort of ECU/sensor issue that wasn't resolved. That maybe the master tech just didn't notice any issue and didn't fix anything. Again, I will know more on this once I get the notes. But I feel like we have all been noticing the AC issues more with the cold front that has been sweeping across the country so perhaps it fixed it self with a little higher temps...

performance after repairs: I feel sort of like he just moved the needle at which the heater kicks on BUT my AC is definitely now way more responsive. 60-65 is pretty cool but not ice cold. 65 feels pretty ambient to me. I start to feel some heat at about 67. While 70+ is definitely hotter than whatever temp you set it at, it is not MAX heat like 60+ was before. In other words, if you set it to 75 its probably a good bit hotter than 75 coming out BUT it gets hotter the more you turn it up beyond that meaning its not cranking out max heat at all at 75+ until you actually get up to the max heat of 90 or whatever it is.

Until I know what the master tech worked on and have his notes, I am not going to make anymore complaints with the dealer. it is much better than it was before although not perfect.

****Update: service manager called, said he spoke to the master tech when he was working on my LC. Master tech couldn't duplicate the issue, he just recorded the data from the ECU and left. dealer techs COULD duplicate when they first got it.... I suspect he couldn't duplicate because the weather here warmed up so the car acted more normal OR the car acted more normal because the dealer tech had just "reset the system". Service manager said bring it back in if it starts happening again.