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Air Conditioning - Strange Behavior
- Thread author DrDave
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Tellthemride
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Is the physical AC button illuminated in the front climate controls when the vents blow warm?
Did you allow enough time for the AC condenser to warm up to normal operating conditions?
If it was very hot outside, did you remember to keep the Air Recirculate button on as well?
There is no way for the rear climate controls to configure the AC condenser on/off setting, so whatever to have it set to in the front for that button should apply for front and rear.
DrDave
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The AC light is on, I drove for 5 minutes revving quite high to allow the condenser to function, the air recirculate is on... but all I get is a sickly warm breeze coming out of the vents.
As soon as I hit the auto button to turn on rear on the touch screen, 15 seconds later there is a refreshing whoosh of cold air starting to come through.
Not sure about your last comment because there is definitely something going on to cause the rear setting to affect my front AC.
I figured someone would come on and tell me that this was a quirk of the Telly and everyone has this, but It appears that I may have a special vehicle.
As soon as I hit the auto button to turn on rear on the touch screen, 15 seconds later there is a refreshing whoosh of cold air starting to come through.
Not sure about your last comment because there is definitely something going on to cause the rear setting to affect my front AC.
I figured someone would come on and tell me that this was a quirk of the Telly and everyone has this, but It appears that I may have a special vehicle.
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Tellthemride
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That does not sound like normal behavior. Probably need to get it looked at and fixed under warranty.
I drive with my rear climate turned off all the time when I am the only person in the car. Makes no difference if I only have the front controls on or both front and rear.
Not sure what your set temperature is when you are not running Auto climate mode. If you press the Off button to turn everything off, then press Auto on the knob it should only turn on the front climate. Rotate counterclockwise until it says Lo. If it doesn’t feel cold within 10 minutes, it isn’t working as it should.
If you are turning your car on in 90-100+ degree weather, 5 minutes might not be enough for the air from the vents to feel cold.
I drive with my rear climate turned off all the time when I am the only person in the car. Makes no difference if I only have the front controls on or both front and rear.
Not sure what your set temperature is when you are not running Auto climate mode. If you press the Off button to turn everything off, then press Auto on the knob it should only turn on the front climate. Rotate counterclockwise until it says Lo. If it doesn’t feel cold within 10 minutes, it isn’t working as it should.
If you are turning your car on in 90-100+ degree weather, 5 minutes might not be enough for the air from the vents to feel cold.
sf77-2020Telly
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Jumping on here - I'm also now experiencing odd issues with the AC:
- this weekend, could not get the AC to work. Would only blow warm-ish air.
- experienced this whether I was using the 'Auto' setting or just manually adjusting the dial and using the AC button
- I did not try turning on or off / toggling the rear controls, as some folks have discussed.
Pretty bummed that this is happening in my 1yr old (less than 17K) Telluride.
- this weekend, could not get the AC to work. Would only blow warm-ish air.
- experienced this whether I was using the 'Auto' setting or just manually adjusting the dial and using the AC button
- I did not try turning on or off / toggling the rear controls, as some folks have discussed.
Pretty bummed that this is happening in my 1yr old (less than 17K) Telluride.
Tellthemride
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If you cannot get any cold air no matter what, you may have a coolant leak. Possibly from bent condenser fins in the front grille from rock damage?
AC Leak. AC Issues
I want to start off by saying my wife and I really like this SUV. We waited and did our research before we bought the Telluride S model. Well, we have 400 miles on it and the AC started blowing hot air and gray smoke came out from under the engine and it smelled like Freon. Well its been at the...
tellurideforum.org
sf77-2020Telly
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Update:
- STILL having issues with the AC sporadically not working (not blowing cold).
Background:
- took it to the dealer and they ran diagnostics and saw that there was a 'failure' signal going off, so they replaced the part. That involved a bit of work (drainging the refrigerant/re-filling it/etc). But after they did the work, it started blowing cold.
- so we thought all was good but now - once again - sporadically it is not blowing cold.
- going to talk to the dealer again to see if they want to replace the part (again)..hoping that they'll at minimum look to see if the failure code is firing again or not. The hard part is that it is difficult to figure out how to consistently make the AC work (or not work).
Curious to see if anyone else is experiencing this and what they found. It sure feels more of a computer (chip/software) issue.
- STILL having issues with the AC sporadically not working (not blowing cold).
Background:
- took it to the dealer and they ran diagnostics and saw that there was a 'failure' signal going off, so they replaced the part. That involved a bit of work (drainging the refrigerant/re-filling it/etc). But after they did the work, it started blowing cold.
- so we thought all was good but now - once again - sporadically it is not blowing cold.
- going to talk to the dealer again to see if they want to replace the part (again)..hoping that they'll at minimum look to see if the failure code is firing again or not. The hard part is that it is difficult to figure out how to consistently make the AC work (or not work).
Curious to see if anyone else is experiencing this and what they found. It sure feels more of a computer (chip/software) issue.
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Mandy- oklahoma
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AC issues here as well at only 13,000 miles. At an idle it’s quite but turning the AC on it gets loud and whiny. Took it to 2 dealerships with one saying nothing is wrong and the other saying yes we can hear it being louder than most but nothings wrong it’s just loud…. Loud equals broken to me! 
Tellthemride
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Are you saying when the fan speed increases it gets louder? Have you checked your air vents are not in the closed positions? It will make a hissing or squeaky noise if the vents are closed with the fan speed on max.AC issues here as well at only 13,000 miles. At an idle it’s quite but turning the AC on it gets loud and whiny. Took it to 2 dealerships with one saying nothing is wrong and the other saying yes we can hear it being louder than most but nothings wrong it’s just loud…. Loud equals broken to me!
The action alone of turning the AC button on and off should not make any noise from inside, unless it is related to the fan speed increasing (particularly when in auto climate mode).
As a side note, the owners manual also mentioned (as part of maintenance) to run the ac from time to time during the cold months (heating season). The Freon has oil in it to lubricate the moving parts and this will also prevent the seals from drying out that will lead to Freon leak. Thanks.
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Mandy- oklahoma
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Vents are opened. Just turning the ac on is loud and whiny. Turn ac off telluride is quite.
DrDave,
Are you still just running the rear AC to get cold AC in the front? Or did you find a solution?
We just purchased a 2021 and this is exactly what it is doing as well.
Glitterbomb
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We are having this exact same issue with our 2023 Telly. Only happens every once in a while and sometimes if I change the temp all the way to hi and then back down it will work like it’s supposed to but sometimes no. Curious if you ever got this sorted out.
jaynyc
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To those experiencing issues, does switching to Sport mode make any difference ?
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G
G-55076
Having the same issue
I am literally having this issue 2023 Telluride..But turning on the rear AC worked. Bizzare. The service people said they have no idea about this
Yup! I have a 2020 Telluride EX - same exact thing!
I have a 2024 Telluride with less than 10K miles. Today it would not blow cold air. I turned the A/C on and off several times. I switched it from Auto to manual and back a few times. No cold air. I parked and went in for a Dr. Appt. Came back out and started the car and it started blowing cold air. Very strange. Seems like maybe the compressor did not engage until I restarted it???
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