Air Conditioning Not So Good

Anyone with a 2023 (or 22) think the AC is not great? I can set both left and right temperature to LOW (below 60) and in AUTO mode the cab never gets really cool. The fan also doesnt go to the highest blower speed. If I leave the temperature to low and NOT in Auto with me setting the fan to the highest speed it will also not get really cool in the cab. The fan running the highest manual speed is much more noisy.
My 09 Tacoma would cool your butt off and you would have to turn it down.
Dont know what refrigerant is used in the 2023. I am just not impressed with the cooling capability. Do I have something set wrong? If I turn on the seat cooling it makes the cab acceptable, but doesnt seem to have the capacity to really make the cab cold.
Open to any sugestions
OH also how does the AC compressor work when the engine is stopped on the Hybrid?
Thanks
PT in Tennessee

 

Sorry folks for this post. Just found another thread with many complants and suggestions. I need to read these first.
Thanks
PT

 

I was going to suggest to make sure the rear air is on as well and the light for the rear air is off

 

Since hitting AC weather, I have mine on sync, no auto, low, and recirculate until things cool off. Haven't had to go above level 3 in the blower, yet, but we don't deal with humidity like the South does.

No complaints so far.

 

Go in with Carista and change the temp dial calibration to -2, works like a charm

 

The a/c indeed sucks on this truck. On high with the main dash vents on your face it makes A LOT of noise but hardly anything comes out. Sounds like it's coming out of the defrost vents but it's not

 

If this works, it will eliminate my only complaint with our trucks. Thanks for justifying the order haha

 

I just tried it after reading this this morning and it seems to have worked.

I live in central TX where outside temps are in the low 90s now and have had to set the temp to 65-67 for it to feel cool in the cab while driving.

Now, it’s set to 72 and almost too cool. I’ll be adding ceramic tint to the moonroof soon to help even more.

My current Carista app settings:

• Temp Dail Calibration to -2C
• Ambient Temp Calibration to +2C

 

Thank you for sharing this.

 

Would this be something I could do with Tech stream?

 

yes, you can

 

Please help me a little. What is this Carista?
I dont have any screens that look like this.
Thanks
PT

 

https://caristaapp.com/en

It’s a Bluetooth model that pairs with an app on your phone so you can control things you normally have to take it to the dealer for and they use tech stream from Toyota

You can do basics like turn off seat belt chimes , this thing I found here with the ac and more .

it’s kinda like tech stream for dummies

 

People disagree with me but pressing the recirculate button will increase the fan speed and should cool down quicker.

Someone said the fan speed doesn’t go faster with the recirculate button on, but I tested it myself and my fans kick up to a higher speed, this has been the case with every car I’ve owned.

 

I think it’s a simple situation of the calibration is warmer than people like or the last truck, so when you make that tweak to the truck I found in Carista or tech stream it calibrates more like what we are used to, the ac in mine works great now , right on par with my 2016 I traded in.

just my .02

 

Agree. Went in and changed mine this morning and it definitely improved. Even my wife noticed

 

and that is most important, ha!

 

Would changing the ambient temp do anything in terms of AC? I know that sensor feeds the instrument cluster the outside temp, and I suppose that would maybe change the Auto mode, but if you set HVAC temp manually on the dash, I can’t see it having an effect. Maybe I’m wrong.

 

I agree with you. I believe that's how all my other vehicles did with the recirculate on. I also noticed that the blower speed bumps up from 60° to lo. I normally run mine at 2. You can hear it speed up when you go to lo. My main concern is the lack of feeling the air that's coming out of the vents. Makes a lot of noise but not much pressure.

 

So it might blow more air but not colder air.

I’m still a little surprised that Carista can lower the AC temp to get colder air.

 

My assumption is that the ambient temp refers to the cabin temp that the temp dial setting is referenced against. The AC works to match the dial temp with the ambient temp. Otherwise, I’m unsure why this setting would exist under Heater & AC if it didn’t affect either one.

But, I see your point and I could be completely wrong about the ambient temp.

All I can say with certainty is that it now blows longer and colder to reach the dial temp.

 

No, not more air. I think it just manipulates what the vehicle does compared to what it's set to. Like whatever senses it, it sees a higher temp which in turn keeps the air on to reach the target temp. I'm probably making it confusing though. Like the JB4, alters what the ECU reads do it tries to compensate.

 

Since adjusting the ambient temp +2C in the Carista app, I noticed the outside temp reading just seemed too high.

I changed the ambient temp back to “normal” and the outside temp reading immediately lowered 4F degrees.

AC is still blowing colder since I left the temp dial setting at -2C.

I am unsure why the ambient temp calibration exists in the Heater & AC section of the Carista app other than perhaps the ambient temp is used to tell the system what outside air temp it needs to condition to match the dial temp as it’s drawn in.

I don’t have a thermometer to measure any change in air temp at the vent. Maybe someone else does.

 

Yes leave ambient at normal change dial calibration to -2 and it’s good to go

 

Just adjusted dial temp to -2 while truck was running. When I hit save the fan went faster and it cooled off. Now I feel like 70 is 70 as before I would set it to 67 to feel like 70 in my old tundra. Thanks for the tip!!!

 

I adjusted mine as well this morning with Carista and what a difference it made!

 

Can the dealer do this too?

 

Yes but depending on your Dealership whether or not they would charge you to do it. Shop fee's are 2 or 3 times higher than just buying Carista and doing it yourself, take a look at the Carista discussion if your interested. Breathing Borla thanks a ton for sharing the fix there for this.

 

Anybody in the Greensburg Pa area with carista?
Web site shows out of stock too.
My ac only gets to 45 degrees if I'm lucky seems rec or fresh doesn't have any effect on temp when rec should get the coldest.

 

After talking to one of my Technician friends that works at the Toyoda Dealership I am starting to understand more about the Tundra. The Hybrid Tundra has a small permanent magnet DC motor that drives the AC Compressor. The gas engine has nothing to do with it. Also there is no alternator as the Electric Motor charges the batteries. The R1234 refrigerant is a blend with a really low vapor pressure-even lower than previous R134, so the chance of a leak is smaller. so the EPA is happier. The drawback to these modifications (happening since R12) is that the heat exchanging capacity is lower every time a new refrigerant has been introduced.
I did not find out if the Non-Hybrid uses this electric motor.
Just a little info
Thanks
Pat T in Tennessee