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Discussion Starter #1
Had a 16 Leaf before purchasing my 2019 in late december 18 have 35K on it. Almost immediately i had terrible issues with condensation on all interior windows. Heres some details:
  • builds up to where its impossible to drive its so bad usually within 10 seconds
  • summer or winter
Usually after driving for 20 mins
- on highway or side streets
So bad its too dangerous to even pull of the higway for fear id his something
  • took to dealer twice and said its fine and gave me a grade one review on how to use it daah! Essentially told me yo always have it in “auto” mode on temp dial. Fid that for weeks but still occurs. - tried using various combos of max defrost, air condition, high heat, cracked wondow, cleaning windows but issue remains
  • i wont let my eife or kids drive it gor fear theyll be in an accident because of zero visibility.
so dangerous, so frustrating and no fix. Whatsip Chevy?
 

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Do you have "Auto Defog" turned on? It's on page 143 of the manual for my 2017 Bolt - if you've downloaded the PDF for your 2019 you can search it for "Auto Defog"
 

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Discussion Starter #4
Thanx on a different page in the 19 manual. But ya its been on since i bought it.
 

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I get fogging problems in the winter, if I have “recirc” button pushed. Recirc saves some power, as you’re not having to constantly heat ambient air, but it keeps all the moisture inside & fogs quickly.
 

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Ya ive been trying different settings, kinda thinking if you have the the “auto recirc” on it might just keep recycling moisture. But its been over a year and jeeps pipping up.
 

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Use an old windshield wiper to squeegee off the moisture before starting, then run the climate control in defog mode (with AC and heat on).
 

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Definitely not normal. I have no such issues after having my '19 Bolt for almost a year and having driven '13 Leaf near 6.5 years (I still have one).
 

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Maybe the record door is stuck closed. Maybe there is no DTC for it.
I don’t know how it would fog up within 10 seconds.

ive never had fog that wouldn’t clear unless the carpet was wet from leaving the windows down, but that sure sign of that is they fog up when the car is OFF and then windows are rolled up. Took days in the hot sun to dry it out.
 

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Had a 16 Leaf before purchasing my 2019 in late december 18 have 35K on it. Almost immediately i had terrible issues with condensation on all interior windows. Heres some details:
  • builds up to where its impossible to drive its so bad usually within 10 seconds
  • summer or winter
Usually after driving for 20 mins
- on highway or side streets
So bad its too dangerous to even pull of the higway for fear id his something
  • took to dealer twice and said its fine and gave me a grade one review on how to use it daah! Essentially told me yo always have it in “auto” mode on temp dial. Fid that for weeks but still occurs. - tried using various combos of max defrost, air condition, high heat, cracked wondow, cleaning windows but issue remains
  • i wont let my eife or kids drive it gor fear theyll be in an accident because of zero visibility.
so dangerous, so frustrating and no fix. Whatsip Chevy?
Something is really wrong.

I too have a 2019 since September 2018. I never ever used Auto mode and what you posted never happened to me.
On the top of my head, it sounds like an intermittent evaporator issue.

Did you consider having a second opinion from another dealer?
 

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I've had some fog issues just trying to conserve energy ("gaming" it, lol, though I don't have to). I found that just turning off recirc and turning on defrost was fine, even in cold rainy weather.

We used to have an old mercury where the heater core got a small leak in it, and it would steam/fog up the windows because of that, so I'd make sure your heating loop isn't losing fluid, though you'd probably smell it too.

Cabin air filter is also another good suggestion and just make sure you don't have some kind of other leak in your car that's soaking the carpet or something.

Good luck.
 

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I have fogging issue but opening a window (if the commissioner is not with me...I don't mind the cold) or turning on the heat/defrost (commissioner likes heat) takes care of it in short order.

I did notice that the windows had a film on them when I took delivery that I made the dealer clean off. It was really bad. They had to use their products to remove it....like Invisible glass or something.
 

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I also have a 2019 and noticed it will fog up if I have recirc on and the AC turned off. However, it does not rapidly cover the full windshield and side windows. It is a slow process. If I turn on the AC and the vent for the windshield it will quickly remove all fog.
I believe before 2019 the option to turn off the AC was not available so they may have less of a problem.
 

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The OP didn't state his location and climate/latitude makes a huge difference in humidity load.

After three years of this forum, if fogging were an inherent problem, we'd have seen many more threads about it. Our 2017 has no fogging issues.

Having said that, dangerous fogging of the windows indicates either an improperly operated HVAC or a malfunctioning HVAC. Leave it outside at the dealer overnight and then be there when they open to demonstrate the problem.

i wont let my eife or kids drive it gor fear theyll be in an accident because of zero visibility.
The third possibility is the the OP just wants the Bolt for himself ;>)

jack vines
 

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Discussion Starter #16
I have fogging issue but opening a window (if the commissioner is not with me...I don't mind the cold) or turning on the heat/defrost (commissioner likes heat) takes care of it in short order.

I did notice that the windows had a film on them when I took delivery that I made the dealer clean off. It was really bad. They had to use their products to remove it....like Invisible glass or something.
 

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This problem sounds strange (unless you live in Atlantis). I suspect you may have a water source inside your car. If it was me, I'd do a thorough inspection, including pulling the carpet up, looking into the deepest part of the wheel well, etc. Something is not right...
 

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My 2019, located in damp Oregon, has never shown any condensation on the windows, except for once when I had recirc turned on by accident.
The OP's car has a leak somewhere.
 
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