Windows freezing from inside

yes, run AC if it turns on below freezing.
I dont want to. This will only hide the origin of the problem.

Also, my gf has a car with no a/c and it has never done that.

That indicates to me that there is a problem with my car and i wanna solve it
 
Just had this issue, which happens often. Had my Trailblazer thawing in the shop after freezing rain. Parked outside and she Iced up from the inside. Drove around with a window partially open to vent the moisture.

I also do what I can to keep the mats clear of snow or really any moisture.

At any rate, if it's not the heater core leaking, it's just life in the cold.
I agree with u, its not the heater core bc af level doesnt go down nor smells like af inside

But its not just life in then cold, bc my gf's car never do this
 
I dont want to. This will only hide the origin of the problem.

Also, my gf has a car with no a/c and it has never done that.

That indicates to me that there is a problem with my car and i wanna solve it

her car might have better ventilation, or you introduced more moisture in the car, or her windscreen has better thermal insulation.

there can be loads of causes besides a leak.

once the problem is "hidden" it might never return.
 
I agree with u, its not the heater core bc af level doesnt go down nor smells like af inside

But its not just life in then cold, bc my gf's car never do this
you know what would be good? get a cheap thermometer with a humidity % read out, I think they're cheap on Amazon/ebay. put that in the car to see how much humidity is inside compared to your gf's. It could also be a leaky windshield could cause moisture down the a-pillar behind the dash..

but back to the humidity, that's why the defogger/defroster for the front windshield has the a/c come on.. it dries out the air to not fog up again.. also if you didn't have this happen before now then the only answer is water/moisture is getting inside the car.. Could also be old weatherstripping letting in moisture around the doors, lube them up with some pure silicone (shin-etsu grease honda has is perfect).

I'm thinking of all the issues when I post this. another issue can be where you park. If it's different than before (when it didn't ice up inside) then that makes sense... Temp differences from inside the car to outside could cause condensation on the windows making ice. sun could warm up the car (Even if it's cold outside) causing this condensation.
 
her car might have better ventilation, or you introduced more moisture in the car, or her windscreen has better thermal insulation.

there can be loads of causes besides a leak.

once the problem is "hidden" it might never return.
Her car is a pos 96' Renault Megane in very bad condition, with rust and all. My car is a mint condition 06' bimmer, so its imposible that her car could be better in thermal isulation or anything else when compared to my car.

There must be something wrong with my car
 
you know what would be good? get a cheap thermometer with a humidity % read out, I think they're cheap on Amazon/ebay. put that in the car to see how much humidity is inside compared to your gf's. It could also be a leaky windshield could cause moisture down the a-pillar behind the dash..

but back to the humidity, that's why the defogger/defroster for the front windshield has the a/c come on.. it dries out the air to not fog up again.. also if you didn't have this happen before now then the only answer is water/moisture is getting inside the car.. Could also be old weatherstripping letting in moisture around the doors, lube them up with some pure silicone (shin-etsu grease honda has is perfect).

I'm thinking of all the issues when I post this. another issue can be where you park. If it's different than before (when it didn't ice up inside) then that makes sense... Temp differences from inside the car to outside could cause condensation on the windows making ice. sun could warm up the car (Even if it's cold outside) causing this condensation.
I go in my gf's car tons of times, and we live together, so both cars are in the same conditions.
Something is sure: her car doesnt keep humidity as mine. I just can feel It.

Whenever i pressure wash my car every window gets foggy inside (not only the windshield). Also, yesterday every window iced from inside too after ten hours sitting outside, and It wasnt raining.

It has happened since i got the vehicle Seven years ago.

Carpet is bone dry, It never generates mold, as a matter of fact it still smells like a brand new car inside.

I usually keep It garaged though, so rubber barriers are aparently ok
 
I go in my gf's car tons of times, and we live together, so both cars are in the same conditions.
Something is sure: her car doesnt keep humidity as mine. I just can feel It.

Whenever i pressure wash my car every window gets foggy inside (not only the windshield). Also, yesterday every window iced from inside too after ten hours sitting outside, and It wasnt raining.

It has happened since i got the vehicle Seven years ago.

Carpet is bone dry, It never generates mold, as a matter of fact it still smells like a brand new car inside.

I usually keep It garaged though, so rubber barriers are aparently ok
ok well just throwing out ideas.. but you saying pressure wash, then the moisture shows up, there's a connection.. have you lubed up the window rubber run channels? even the door weatherstripping, just because it's newer doesn't mean those rubber strips are sealing. I'd use Honda's shin-etsu pure silicone grease, nothing to harm the rubber stripping.
 
ok well just throwing out ideas.. but you saying pressure wash, then the moisture shows up, there's a connection.. have you lubed up the window rubber run channels? even the door weatherstripping, just because it's newer doesn't mean those rubber strips are sealing. I'd use Honda's shin-etsu pure silicone grease, nothing to harm the rubber stripping.
Im definetly gonna try It.
 
Im definetly gonna try It.
ya at least see if they are sealing up properly..

one more thing I thought of was the vapor barrier in the door panel. That plastic sheet that separates the outer and inner door trim panel. You take off the interior door trim, then you can see that sheet. That could also be letting in moisture. Usually that is held on by very stick butyl rubber but who knows maybe BMW didn't use enough when yours was made?
 
ya at least see if they are sealing up properly..

one more thing I thought of was the vapor barrier in the door panel. That plastic sheet that separates the outer and inner door trim panel. You take off the interior door trim, then you can see that sheet. That could also be letting in moisture. Usually that is held on by very stick butyl rubber but who knows maybe BMW didn't use enough when yours was made?
Interesting... Im sure gonna take a look at It .

I dunno if its related or not, but every time i take my car out of the garage i have to roll down the window to manually tuck the rear view mirror (because the garage door is too narrow)

The thing is that the window rolls up wet after that, almost as if the inside pf the door was wet or the rubber was humid (bear in mind we are talking about a car completely dry as it is garaged)

It must be something about It i think

(Sorry for my engrish, i Hope u understood me)
 
does anyone else have this issue,

it has been pretty cold here, as low as -2 C

and I've been having a strange problem, or annoyance to be exact,

all the windows freeze from the inside. I had to scrape the ice/frost from the inside of the car!

I've never seen this on any other vehicle parked outside.

It indicates that moisture is inside the car and it freezes, dont know why though.
Does your car have a defrost setting? If so use it. Alternatively use the heat setting.
 
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I would check all the body drains especially in the bottom of the doors, if the car has a sunroof those can be a real pain. My Beetle did this, it was the sunroof drains.
It doesnt have a sunroof. Im gonna check the door drains. Ty
 
Yes. But i dont like to use it. I wanna address the origin of the issue
I’m in Canada. This morning it was -2C. I turned the heat to the highest level and positioned it to “defrost” to defrost the windows and get the ice off. After a while it was too hot on my face so I turned it to the “heat” position at my feet but was still a bit too hot. The ice on the windows was gone. I then turned down the heat setting. This is all normal operating procedure. Your BMW is well sealed and is keeping the moisture inside the car. Perhaps you also had some snow on your shoes contributing to the moisture.
 
Interesting... Im sure gonna take a look at It .

I dunno if its related or not, but every time i take my car out of the garage i have to roll down the window to manually tuck the rear view mirror (because the garage door is too narrow)

The thing is that the window rolls up wet after that, almost as if the inside pf the door was wet or the rubber was humid (bear in mind we are talking about a car completely dry as it is garaged)

It must be something about It i think

(Sorry for my engrish, i Hope u understood me)
no issue with your engrish, I understood completely. (y)

Now that's interesting, roll the window down, come up with water on the window! And here it was inside the garage, all dry! I agree with @Trav, blocked door drain, could be both the door vapor barrier and a block door drain. Might be onto the right path to fix this!
 
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