HVAC

[nick88highline]

Mine is burning hot all the time from all vents regardless of settings. The Auto button doesn't work, ie the light does not come on, and sometimes the air con does not work, again the light does not come on. Bled the system a couple of times and checked coolant, but it's never gone down. No amount of fiddling around has improved this. I suspect there is a major hardware fault with the HVAC unit.

 

[CRH]

Mine is burning hot all the time from all vents regardless of settings. The Auto button doesn't work, ie the light does not come on, and sometimes the air con does not work, again the light does not come on. Bled the system a couple of times and checked coolant, but it's never gone down. No amount of fiddling around has improved this. I suspect there is a major hardware fault with the HVAC unit.

That doesn't sound like an air problem, get it in to the dealer

 

[AlexN]

Had quite a few issues with it:

Multiple times when AC did not work in +30C
Multiple times when the fan did not work in -10C

I told the dealer about my issues but the other problem is that it works when I go to the dealer so they cannot do anything.
This is frustrating specially now in winter!!!

 

[Iggle]

2023-2025 owners: Your thoughts on your hvac system.

Terrible. IMO, it is inexcusable for a car built today to have such a horrible HVAC. Last summer, it blew nothing but hot air. Dealer cited faulty sealss and fixed it. This winter, it blew nothing but cold air. Dealer cited faulty seals and fixed it.

I have no doubt the same thing is going to happen next summer.

The automatic setting mystifies me. It's almost as if they have set it to respond randomly. The only constant is that it always fogs up my windshield.

 

[Sammyd]

Terrible. IMO, it is inexcusable for a car built today to have such a horrible HVAC. Last summer, it blew nothing but hot air. Dealer cited faulty sealss and fixed it. This winter, it blew nothing but cold air. Dealer cited faulty seals and fixed it.

I have no doubt the same thing is going to happen next summer.

The automatic setting mystifies me. It's almost as if they have set it to respond randomly. The only constant is that it always fogs up my windshield.

What year? How many miles so far?
Did you go through the purge and refilling the coolant process many refer to?

 

[AztecGrenadier]

Do you let the system "boot up" before you start the engine?

 

[Sammyd]

In a $80k plus vehicle one should not have to perform a multi-step ritual, say a short prayer, and wait 15 min for conditioned air. 50% success (operability) in a new product is unacceptable.

Ratcliff /IA just needs to recall all pre 2026 HVAC units and replace them with the current units. Yes, it is costly, But so is brand image.

This is not just a minor inconvenience in a restored 25 yr old car. It is a proper big deal when one just needs to make a quick 15 min trip in extremely cold or hot weather.

 

[Roach]

I know this wouldn’t work for various reasons but would love to see everybody that had an HVAC issue take their truck to the dealer on a specific day…a protest of sorts

 

[Tenac]

I did the purge process three times and that made a difference, however its back to doing the nah don't wanna work any longer.... lol I guess another trip to the dealer.

 

[CRH]

I did the purge process three times and that made a difference, however its back to doing the nah don't wanna work any longer.... lol I guess another trip to the dealer.

keep doing it, and driving. It takes a long time to clear all the air, a long, long time

 

[Iggle]

What year? How many miles so far?
Did you go through the purge and refilling the coolant process many refer to?

2024, about 10k miles. I have not done the purge and refill myself. Although I have begun to try to figure that out since discovering the thread.

 

[Skydance]

keep doing it, and driving. It takes a long time to clear all the air, a long, long time

As CRH said, it’s taken mine only 3 year to get rid of all the air and it’s works 95% perfect. No hot and cold. No foggy windows. Heats in 5 minutes from start up.

The other 5% I have not solved is it whistles in Auto when reaching to set temperature but not on manual. Fan speed 4 or front demister still has that high frequency shrill.