Heat aint heating

[André]

It does that also in my Gen 1 2024 R1T after defrosting the cabin from the app If climate controls is set to AUTO. Simple solution is to put off the auto mode and put it back immediately to reset it when I get in my truck and the air flow will turn from blue to red.

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[mudito]

When you say you set it below 80, it is cold air. Are you doing that from the app or inside the vehicle?

I have had a couple of random instances of it blowing cold air after it was heating normally. For example:
- Set heat to 72, drive the vehicle, heat is fine
- Stop at a Convenience store for a few minutes
- Get in the car and it is blowing cold air and continues to blow cold air after driving a few mins.

This happened last night. I'm trying to figure out a pattern and/or fix, so I did a simple thing - when this happened, I set the Climate System to OFF, waited a few seconds, and SET it back to ON using the touch screen. It then started blowing warm air. Sure seems like a bug.

Happened to me once, Instead of turning it off/on, I actually set it to HIGH, and once it started blasting heat, went back to 73 and it kept blowing warm as it should've.

definitely a software bug

 

[aAlpine]

Oh, that reminds me of another fun bug/behavior: I have PaaK proximity unlock disabled at home, so pull out my phone to manually unlock. If you first enable climate from the app, the lock/unlock buttons become grayed out...sometimes for a surprisingly long time (like 5 min). So I ended up looking like Ben Affleck until the app gave me back control.

 

[CrazyOne]

Oh, that reminds me of another fun bug/behavior: I have PaaK proximity unlock disabled at home, so pull out my phone to manually unlock. If you first enable climate from the app, the lock/unlock buttons become grayed out...sometimes for a surprisingly long time (like 5 min). So I ended up looking like Ben Affleck until the app gave me back control.

This has been a problem. It hard to make G1 Rivian responsive and I get that. They could have made the app responsive while sending commands in the background.

 

[steilkurve]

My gen 2 issue is the heat never shuts down. Have thermostat set at 70. I get hot....check app and it says cabin temp is 78. Happens all the time. Left dog in the truck for 20 minutes with per mode on and was 80 degrees when I came back.

I’m having this issue too. Heat just keeps going. Have tried turning off the system and then back on, toggling Auto off and on as well as several vent configurations including shutting down the rear or not. Still no luck. Open to suggestions (or a software update). I’ll note that I can’t reproduce the issue in my heated garage. Seems like the issue is triggered by lower ambient temperature.

 

[RivAW]

What am I doing wrong? If i set the truck to pre-heat from the app while Im indoors, the truck is blasting heat. I know it works. If i set the truck to anything below 80, on regular heat, the truck is essentially blowing cold air on me. Is this me or the truck?

Known software bug. Make sure when you are in the vehicle that rear heat is also turned on (doesn’t matter whether it’s the lower or upper vents so long as at least one is on). That simple adjustment should get your heat working correctly up front…

 

[Frisbee]

The HVAC systems in the Rivians have been disasters from the beginning. My LE QM R1T malfunctioned continuously whether on AC or heat. I always had to run it on manual. The SC had no answers speculating it was a software and/or sensor issue. That vehicle was replaced by Rivian (drive unit/half shaft issues unrelated to HVAC) with a DM R1T which is a significant improvement over the LE in most regards, including the HVAC, but it still has a mind of its own requiring it to be run on manual at times. While not an automotive engineer nor HVAC expert my amateur opinion is it has something to do with the HVAC system trying to regulate the humidity comfort level in the cabin when on Auto and the multiple zones compound the problem. Oh for the days of a manual AC/Heat/Vent selector switch and a sliding temperature lever.

 

[shap]

The HVAC systems in the Rivians have been disasters from the beginning. My LE QM R1T malfunctioned continuously whether on AC or heat. I always had to run it on manual. The SC had no answers speculating it was a software and/or sensor issue. That vehicle was replaced by Rivian (drive unit/half shaft issues unrelated to HVAC) with a DM R1T which is a significant improvement over the LE in most regards, including the HVAC, but it still has a mind of its own requiring it to be run on manual at times. While not an automotive engineer nor HVAC expert my amateur opinion is it has something to do with the HVAC system trying to regulate the humidity comfort level in the cabin when on Auto and the multiple zones compound the problem. Oh for the days of a manual AC/Heat/Vent selector switch and a sliding temperature lever.

Yep, you are right, I have the same issue, and this is the only car I constantly need to play with HVAC. I bet it is a software problem, one of many they have. No idea why it is so complex to fix software issues while they are not really adding new features so much, so they should have time to optimize and fix the existing code. Wonder where the development is actually done?

 

[Golfer04]

I’m having this issue too. Heat just keeps going. Have tried turning off the system and then back on, toggling Auto off and on as well as several vent configurations including shutting down the rear or not. Still no luck. Open to suggestions (or a software update). I’ll note that I can’t reproduce the issue in my heated garage. Seems like the issue is triggered by lower ambient temperature.

It is triggered by low ambient temps, but I had the same issue when using the AC last fall. About froze us out. Whatever the switch mechanism is doesn't work. To be honest it is ridiculous on any vehicle let alone one in this price range.

 

[steilkurve]

It is triggered by low ambient temps, but I had the same issue when using the AC last fall. About froze us out. Whatever the switch mechanism is doesn't work. To be honest it is ridiculous on any vehicle let alone one in this price range.

Visited the SC for the overheating issue. Turns out one sensor was not properly calibrated which they fixed. They confirmed everything else hardware-wise was working normally.

Drove off and unfortunately, didn’t really see an improvement. Returned to the SC and tried the system with the tech. He acknowledged the behaviour but reconfirmed all hardware was fine and it was likely firmware/software-related suggesting the system adjusts air warmth based on outside temperature.

Writing this sitting in an underground parking garage which is warmer than outside. System is on auto and working fine to be honest. The system seems capable of working normally but somewhere in the code, it’s listening too much to outside temperature sensors.

Tech was great and said they’d escalate internally for a fix. Can’t hurt. Fingers crossed.

 

[rodhx]

The climate control logic, especially the defroster at times, is by far the biggest negative for me. If I had buttons to choose the vents, a temp dial, and a button for the ac compressor it would be perfect. You know, like all 1980 Japanese cars ?

 

[shap]

The climate control logic, especially the defroster at times, is by far the biggest negative for me. If I had buttons to choose the vents, a temp dial, and a button for the ac compressor it would be perfect. You know, like all 1980 Japanese cars ?

Technically you have this - it is just not working as suppose ...

Software is just not baked well (yet) and there is no way to provide a formal feedback...

 

[rodhx]

Technically you have this - it is just not working as suppose ...

Software is just not baked well (yet) and there is no way to provide a formal feedback...

We have the parts but no clear way to force the compressor into use. There were two rainy days last week in which NO setting on the truck resulted in a usable defroster. Defogging performance has been horrible since they pushed out a "secret" software update a couple of winters ago in response to units freezing in northern climates. The system no longer uses the compressor as much as it should. The SC has worked on my system and there have been software tweaks but it still doesn't work as well as it did in 2022.

Most of my ownership the auto function has worked just fine. Might have to "chase" the temp a bit by setting a lower temp to get it cool or hotter to get it warm and then move to my desired setting. Strangely enough that's exactly how every BMW I have had with auto climate control has worked. But without the fluid leaks of course

 

[Golfer04]

Visited the SC for the overheating issue. Turns out one sensor was not properly calibrated which they fixed. They confirmed everything else hardware-wise was working normally.

Drove off and unfortunately, didn’t really see an improvement. Returned to the SC and tried the system with the tech. He acknowledged the behaviour but reconfirmed all hardware was fine and it was likely firmware/software-related suggesting the system adjusts air warmth based on outside temperature.

Writing this sitting in an underground parking garage which is warmer than outside. System is on auto and working fine to be honest. The system seems capable of working normally but somewhere in the code, it’s listening too much to outside temperature sensors.

Tech was great and said they’d escalate internally for a fix. Can’t hurt. Fingers crossed.

Sounds identical to the story I got. High today was 10 degrees with a "feels like" temp of -2F. Went in Costco & came out maybe 30 minutes later to a cabin temp of 80 (at least). Must not have shut off when the vehicle locked?‍.

 

[steilkurve]

Sounds identical to the story I got. High today was 10 degrees with a "feels like" temp of -2F. Went in Costco & came out maybe 30 minutes later to a cabin temp of 80 (at least). Must not have shut off when the vehicle locked?‍.

Do you have a Gen 1 or Gen 2?

I’m starting to wonder, despite what the service centre told me, if it couldn’t be a heat pump hardware limitation.

Saying that because when it’s really cold outside, even if I put the system on LO and turn off Auto, warm air still comes out of the vents. Maybe their heat pump just can’t produce cold air below a certain threshold. If it was a software issue in Auto mode, then you’d expect that in Manual and on LO, you’d get cold air but no, you don’t.

Now, with those same settings, I do get cold air in my heated garage hence my theory it might be the heat pump specifications themselves. It just can‘t produce cold air in very low outside temps.

Thoughts?

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