Front windshield & drivers front window fogs up some times

[214RUNNER]

I get a fog on the front windshield and driver front window some times. I think it smells like antifreeze with the heat on with recycle air, happens for a minute or 2 than goes away. I have 10100 miles on my 2021 TRD Off Road. I'm hoping it’s not a heater core I don’t see any leaks under the heater box & the drain hose is dry coolant level is full in radiator & recovery tank. I haven’t pressure tested it yet since it only happens after it’s warmed up.
Any one having this happen with there 4 Runner?

 

[Saker]

I get a fog on the front windshield and driver front window some times. I think it smells like antifreeze with the heat on with recycle air, happens for a minute or 2 than goes away. I have 10100 miles on my 2021 TRD Off Road. I'm hoping it’s not a heater core I don’t see any leaks under the heater box & the drain hose is dry coolant level is full in radiator & recovery tank. I haven’t pressure tested it yet since it only happens after it’s warmed up.
Any one having this happen with there 4 Runner?

Take it in, that's not normal.

 

[djeepin]

I get a fog on the front windshield and driver front window some times. I think it smells like antifreeze with the heat on with recycle air, happens for a minute or 2 than goes away. I have 10100 miles on my 2021 TRD Off Road. I'm hoping it’s not a heater core I don’t see any leaks under the heater box & the drain hose is dry coolant level is full in radiator & recovery tank. I haven’t pressure tested it yet since it only happens after it’s warmed up.
Any one having this happen with there 4 Runner?

at what position of climate control knob?

 

[214RUNNER]

Center dash & floor with recirculated air on fan speed just under 1/2. This hasn’t happened for a few days now.I thought i smelt antifreeze this morning for a second but no fogging on windshield, i haven’t had time to pressure test system yet.

 

[thennen]

Center dash & floor with recirculated air on fan speed just under 1/2. This hasn’t happened for a few days now.I thought i smelt antifreeze this morning for a second but no fogging on windshield, i haven’t had time to pressure test system yet.

Recirc with AC off will cause that. Switch to fresh and crack open a window, especially on humid days. Recirc with AC on (including defrost) will clear it up also. Plus, clean your glass if you haven't. Dirty glass will attract moisture.

 

[mc813]

Recirc with AC off will cause that. Switch to fresh and crack open a window, especially on humid days. Recirc with AC on (including defrost) will clear it up also. Plus, clean your glass if you haven't. Dirty glass will attract moisture.

This. In certain conditions if I have AC off it'll fog my windows. If it's fogging them with AC on I'd say there's a problem and like another poster said I'd take it in.