foggy windshield

[Jayfarr]

My 2020 M3 LR Dual motor has the most irritating propensity to fog up on cool drives. A quick defrost cycling clears it, but it returns quickly. Has anyone found an effective way to keep the inside of the windshield clear?

 

[UncertainTimes]

Um keep the defogger on? The relative higher humidity inside the car from your breathing is what causes the fogging.

 

[leonar40]

Ya, first, make sure the "up" vent selection is on. For me, I just keep all three vent selections on all the time and set the fan to 5, that works well almost all the time. If I need more, I turn the defog or defrost on briefly.

 

[drtimhill]

My 2020 M3 LR Dual motor has the most irritating propensity to fog up on cool drives. A quick defrost cycling clears it, but it returns quickly. Has anyone found an effective way to keep the inside of the windshield clear?

Do you have A/C on?

 

[zhu-]

Give the inside of your windshield a deep scrub and cleaning and it'll go away for 6-12 months. I think the plastic in the interior off-gasses and gets stuck on the windshield. Mine always had some residue on it during the first year and would fog up all the time but seems to be gone for good now.

 

[Gasaraki]

Yeah, compared to my WRX or Legacy GT, this car seems to fog up the instant that I put recirculate on. On auto it seems to do a good job keeping the fog away. I don't need to clean the inside glass like zhu said also. It's just been so cold.

 

[joebruin77]

I have used this method to clean the inside windshield glass and it works really well (courtesy of youtuber Chris Fix):

1) Wipe as much of the residue off with a clean, dry microfiber towel.
2) Put a Magic Eraser in a small container of warm water, wring out the excess water, and then clean the entire glass repeatedly and thoroughly. I liked to use a criss-cross pattern, where first you go up and down, then go right to left.
3) Use a clean, dry microfiber towel to dry the entire window.
4) Use a non-amonia glass cleaner such as Stoner's Invisible Glass, Sprayway, or Meguiars D140 to clean the entire inside glass one last time. This time, instead of a standard microfiber, I use a dedicated, waffle weave glass towel. This will leave a lot less of those tiny, annoying fibers behind that you see when the sun hits the window.

Hope that helps.

 

[drtimhill]

I have used this method to clean the inside windshield glass and it works really well (courtesy of youtuber Chris Fix):

1) Wipe as much of the residue off with a clean, dry microfiber towel.
2) Put a Magic Eraser in a small container of warm water, wring out the excess water, and then clean the entire glass repeatedly and thoroughly. I liked to use a criss-cross pattern, where first you go up and down, then go right to left.
3) Use a clean, dry microfiber towel to dry the entire window.
4) Use a non-amonia glass cleaner such as Stoner's Invisible Glass, Sprayway, or Meguiars D140 to clean the entire inside glass one last time. This time, instead of a standard microfiber, I use a dedicated, waffle weave glass towel. This will leave a lot less of those tiny, annoying fibers behind that you see when the sun hits the window.

Hope that helps.

wow .. do you ever allow your car to leave the garage???

 

[leonar40]

I have used this method to clean the inside windshield glass and it works really well (courtesy of youtuber Chris Fix):

1) Wipe as much of the residue off with a clean, dry microfiber towel.
2) Put a Magic Eraser in a small container of warm water, wring out the excess water, and then clean the entire glass repeatedly and thoroughly. I liked to use a criss-cross pattern, where first you go up and down, then go right to left.
3) Use a clean, dry microfiber towel to dry the entire window.
4) Use a non-amonia glass cleaner such as Stoner's Invisible Glass, Sprayway, or Meguiars D140 to clean the entire inside glass one last time. This time, instead of a standard microfiber, I use a dedicated, waffle weave glass towel. This will leave a lot less of those tiny, annoying fibers behind that you see when the sun hits the window.

Hope that helps.

Invisible glass is the best!

 

[joebruin77]

By the way, if you still have a foggy windshield after using Invisible Glass or any other standard auto glass cleaner, here is a glass polish to try. It was recommended on autogeekonline I really trust. I plan to order and try the product myself:

Mckees37 20/20 Cockpit Glass Cleaner

Review: McKee’s 37 20/20 Cockpit Glass Cleaner

 

[Jayfarr]

Thanks to all. We’ll try it and let everyone know how it works in damp Oregon.