It’s not about temperature, it’s about condensation and humidity. Turn on the AC regardless of temp (e.g. even if it’s cooler out and you’re blasting the heat) and the defog too.
Source: I fucking live in Seattle and it fucking rains all the time
but if I leave the AC on cold for too long I get mini fogs where the air blows
When I press the defrost button in my car, it turns both the heat and AC on at the same time. I assume this is to remove water from the air with the AC, then warm up the air increasing its capacity to hold water with the heat.
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Yall have a defrost button?
Just the other day I was listening to this song by the Grateful Dead:
"Sometimes the light’s all shining on me …
Sometimes I can barely see …
And lately it appears to me
What a long strange trip it’s been. "
Open the window.
Always use heat. Anytime you have a fogged up window heat will cause that moisture to evaporate. Cold will always make the window cooler which causes more condensation.
Air conditioning will remove moisture from the air while cooling the cab, so the condensation can only form on the outside, where you have wind and windshield wipers to wipe off the condensation.
Nope
crack a window
People in comments assume the heat or air conditioning even work.
Air conditioning also rapidly reduces humidity, so that tends to be the ideal option.
But if neither heat nor air conditioner work, well tough it out and roll the windows down…
If neither the heat or A/C work, you shouldn’t be driving that POS on the road.
My truck doesn’t have working heat and never had AC, and I will never stop driving that POS.
Our heater does work, just no blower motor, so if we need heat, just open the vents and drive for airflow.
Our air conditioner unfortunately does not work, but we have manual windows that roll down by hand for airflow.
And today I just happened to install a fan on the dashboard.
Yes it’s a piece of shit truck, but ignoring the ‘luxury’ features that cost more than the truck itself to fix, it’s pretty darn reliable.
See my previous posts regarding Kermit the 96 Sonoma for reference. More reliable than new model Ford trucks that brick themselves because rainwater got into the taillight assembly…
Your blower motor probably does work, but the resistor assembly hooked up to the knob that controls its speed is most likely blown. This was the case with my truck when I got it and is rather common. Thirty four bucks will solve that problem for you, and it just plugs right in.
The entire right side of the dashboard is missing, all the way down to the firewall, no thanks to the previous but now deceased meth tweaker owner.
There’s no fixing everything on this truck, short of dumping enough money into buying 4 more scrap trucks for spare parts…
That would not be street legal here. Must have a functional defroster if the vehicle has a windshield.
Well I take it we’re not in your state or country. Mississippi here, we no longer have vehicle inspections. And this is respected even in other states that do require vehicle inspections. They’re like yeah fuckit, half the windshield is cracked, but it’s from Mississippi, so nothing Louisiana can do.
Down here, we’re half-professional rednecks that try our best to keep our own vehicles running. As long as it starts, runs, stops, shifts gears, steers, and has all the critical lights working, it’s fine.
Hood, trunk, windshield, front grill, rear bumper, doors, heat, air conditioning, etc luxuries are all optional here. As long as it runs, stops, and steers is basically what all Mississippi cares about, plus lights at night. And other states have to observe our very lax vehicle requirements too.
I’m still working on some of the finer things, like it needs a horn, but generally speaking the truck runs pretty damn good to be 30 years old.
Remember to pull your sun visors down. My AC doesn’t stay charged so I have to rely on heat alone to defog windows. The visors trap the warm air.
Atleast you have a car
match the temperature outside.
if it’s cold out you need to make it colder inside
if it’s hot out you need to make it hotter inside
the condensation is caused by difference in temperature.
yes, it may be inconvenient or uncomfortable
Uhhh the defrost button? Arr people that dumb?
Do they not make cars with Defrost buttons anymore?
That’s REAR defrost. Front defrost is on the left, and yes, all cars still have that.
Useful mnemonic: Rectangle for Rear defroster, Fan for Front defroster
here’s a useeful mnemonic. Fuck You For Giving Correct Mnemonics
it stands for the great lakes next year
Umm, no shit Sherlock? It’s literally in the picture I lifted from wikihow - just happened the rear one is circled.
Here, let me provide a version suitable for your comprehension level:
How were they supposed to know you didn’t circle it? Don’t be a knob, easy mistake
ORANGE CIRCLES??? oh what a world
They make cars with buttons? I thought ever car made after 2020 had an tablet taped to the dashboard …
the fuck. that’s a white circle, not a red circle. i’m so confused.
If you have a fancy new car without one just yell at your on board AI system until you start crying and then the tears are more blurring than the fog and you just don’t care anymore.
Defrost turns on the AC and blows cold air. That temporarily removes the fog and keeps the cabin cold. The alternative is to use max heat and let the hot air raise the cabin temperature which will help clear the fog.
And it stays gone too. Using cold causes the fogging to return if hot air or the heater is used in the cold car. The defrost button is a myopic solution which ignores user comfort.
American cars: “This obviously requires the AC.”
