Note: This is Major condensation. You swipe the interior windshield ever so slightly it will drip!
I am getting a frustrating interior / inside frosting condensation issue after parking my Truck during a sunny cold day while at work. It does not happen at night. It only happens when the sun warms up the cab.
I have been doing a lot of research on this issue so here are some points.
1. It has been to the dealer for a leak test. 3rd party checked under the carpets, brake light and such and could not find any leaks. I checked under the carpets, by removing the plastic moldings no leaks. Also they checked the A/C drain plug by running it, I saw it drip. Only question is there sufficient flow?
Carpets underneath NOT wet
Sound Insulation underneath NOT wet
3rd Brake Light, Re-Sealed Checked
Rear cub holes under Rear Seat NOT wet
A/C Drain hole tested. It was dripping.
2. I use window defrost with fresh air and A/C on (NOT Recirculate) in the colder months.
3. I do not have open Soda cups or slush / water / snow in my floor mats.
4. I have got the HVAC recall done. I have tested the actuators and they seem to working appropriately when the truck is running. I.e. recirculate / fresh air and defog / feet / etc. The Service manager also assured me the StarScan tool tested the actuators.
5. I only get this issue after parking in the sunny on a cold day. During the day it does not happen while the sun is on the CAB. Once the sun is not on the CAB it the condensation starts.
6. I do not smell anti-freeze, there is no oily residue. I have cleaned my interior windows.
7. I used anti-fog on part of the window. This is not a solution b/c the window is really wet on this side as well.
8. There is no mold / musty smell in the truck.
9. Also if there is enough of a Temp Change, this will migrate to all the other windows. To add sometimes I see some condensation / fog on my side window.
This does not happen on cloudy days. To me it seems that the interior cab warms up enough with the sun shining and there is always enough condensation to cover the windshield and it takes like 10 minutes to remove. But to me it seems like it has to be a large amount of water somewhere maybe in the Evaporation / Heater box?
I took out the glove box, and I noticed that my truck was parked and the bellow controlling the HVAC was on recirculate. I wonder if this is sealing my truck up so much to cause this issue. But I don’t know where all the moisture is coming from????
I took out the HVAC fan and felt around and I have not seen or felt any water.
2010 Dodge Ram Hemi Quad SXT.
I drive it every day 15 KM to and from work.
Here is the Large Image
Hopefully you guys can help me, b/c when I get frost on the interior window after coming from work it drives me nucking futs.