Warming with defroster

[BobAbooey]

Do we have any control how the defroster turns on when warming up the car via the app? It seems to be like random

 

[DIY-GUY]

Hi, I'm pretty sure it will simply continue to operate from it's positions last used.

 

[Mod3forMe]

Hi, I'm pretty sure it will simply continue to operate from it's positions last used.

No - it seems to know if it should turn on. In my case if it is a 'frosty' day it turns on. I have a small sample size, but I can say for sure it does not turn on with the last setting (rare if ever do I get home with defrost on)

 

[BobAbooey]

No - it seems to know if it should turn on. In my case if it is a 'frosty' day it turns on. I have a small sample size, but I can say for sure it does not turn on with the last setting (rare if ever do I get home with defrost on)

Mine was going on automatically but not it’s not a this morning I have all frost on my windshield. The camera on the windshield has to see that. Don’t know what I did to disable it

 

[GSP]

Perhaps climate has to be left in "Auto" for the defroster to come on when needed?

GSP

 

[BobAbooey]

Perhaps climate has to be left in "Auto" for the defroster to come on when needed?

GSP

I alswag keep it in auto, the only thing i can think of is when I was at the car wash yesterday I turned off my automatic windshield wipers maybe they’re also shut off the camera to view if there’s frost on the windshield... I don’t now

 

[boaterva]

From our limited experience it’s when the car is colder. In the garage defrost doesn’t come on but when parked outside (say 50 F) it has. Not a large sample size for the outside testing though....

 

[DIY-GUY]

I stand corrected. The other night it was 30 degrees out and overnight soaked cold. I left everything turned off. When I turned on the climate from the app it automatically turned on the defrosters.

 

[boaterva]

And today it did the same for us. 27 F outside, 47 in the car and it turned the defrosters on. So, yeah, car temp below 50 F may be the trigger?

 

[BobAbooey]

And today it did the same for us. 27 F outside, 47 in the car and it turned the defrosters on. So, yeah, car temp below 50 F may be the trigger?

IDK what’s up with the app.. The defroster worked the other night and this morning it was 20° and the defroster did not turn on. It’s like always when I really need the defroster it does not turn on... oh well

 

[ngogas]

There is a threshold that it has to fall below before it turns on on the defroster and heated seats. I want to say anything under 52 degrees interior? Either way, it turns on by itself as needed.

 

[Scottus3]

I also have issues with this. Today, it was about 18 F and my front and rear windows were frosted off. Despite my 15 minute pre-warm, the defrosters never turned on, when they should have due to either the temperature or obscured viewing by the front camera (if they are using that to detect whether defrosting is necessary). I am currently on 46.2 and they used to turn on.

Also, I identified another annoying issue with the defrost system. Also this morning, I would get into my car and enable both front and rear defrosters to start the process, but whenever I got out and closed the door, they would shut off. This would be very frustrating if we had lots of snow and I wanted the car to keep the defrosters on to warm things up from underneath while I dusted off the snow above. Any others experience this issue or have a solution, beyond keeping the door ajar?

 

[ngogas]

@Scottus3 Call service and have them take a look.

 

[BobAbooey]

There is a threshold that it has to fall below before it turns on on the defroster and heated seats. I want to say anything under 52 degrees interior? Either way, it turns on by itself as needed.

No it don’t

 

[BobAbooey]

 

[DIY-GUY]

Well Last night after waiting till it was a complete cold soak and 38 degrees in and out to my surprise the defrosters came on even though there was nothing for the camera to see and @ 38? The other interesting thing is it stayed on even after it reached the 75 it was set for?

 

[ilg]

The main difference between the two sets of screen shots is that @DIY-GUY has his climate set to a particular temperature, while @BobAbooey has his set to "HI." Could be that using the HI setting bypasses the defrost logic.

 

[brobinson]

Seems to do it on its own if the inside of the car is ~50deg or cooler

 

[DIY-GUY]

I had intentionally set it for 75 to be sure that not having it on HI it would still work.... I was proving to myself that "HI" was not the trigger.

 

[ilg]

Another perfectly good theory shot down by "facts."