Foggy windows

[eseibel67]

I had a severe window fogging/icing problem on an 07 sedan and it was making me nuts. I checked everything that could possibly be causing it such as wet floor or seats, leaking windshield, clogged drain from evap case, or leaking heater core. All checked out ok.

The solution was so simple it's embarassing. The HVAC control was set to "recirculate". Switched it back to fresh air and it's all good now.

[soldout]

Originally Posted by eseibel67

I had a severe window fogging/icing problem on an 07 sedan and it was making me nuts. I checked everything that could possibly be causing it such as wet floor or seats, leaking windshield, clogged drain from evap case, or leaking heater core. All checked out ok.

The solution was so simple it's embarassing. The HVAC control was set to "recirculate". Switched it back to fresh air and it's all good now.

You saved my life.

[JustPassinThru]

Originally Posted by eseibel67

I had a severe window fogging/icing problem on an 07 sedan and it was making me nuts. I checked everything that could possibly be causing it such as wet floor or seats, leaking windshield, clogged drain from evap case, or leaking heater core. All checked out ok.

The solution was so simple it's embarassing. The HVAC control was set to "recirculate". Switched it back to fresh air and it's all good now.

The Gen3 has an electric switch, not a dial; a button that locks down to close off fresh air. Put it in DEF and the button pops out.

I personally don't like it - many times I've used the fresh-air cut-off when behind an out-of-tune diesel or near a squashed skunk. And I used to warm the interior of the car with the fresh air cut off, but the fan low and blowing on the glass. With no bodies inside, it did fine - and warmed up the interior faster.