New here but i have a Question. My Friend has an 04 F150 crewcab and in the mornings when its cold out there is moisture on his windshield from the inside, And its not the occasional foggy moisture its a pretty good amount of wetness. Any Ideas on what could be wrong with the truck maybe a seal. Anybody have this problem before

 

Possible weather stripping on the doors are worn out, cracked etc.. Therefore doors aren't sealed properly when closed

Sliding rear window?? might not be sealing properly

 

There have been several issues with some people's seals on the windshields leaking..not as bad as the 3rd brake light issue, but it can still cause problems.

 

I Figured it be a weather striping problem. But wanted to make sure it wasn't something i didn't know about.

 

Get a bright flash light and get yourself or someone in the cab of the truck. Then get a hose and throw lots of water along the edge of the windshield on the urethane. Search for any leaks, the most common place place it will leak though is on the cab, well, that's where you will notice it anyways. Anyways try that, that's what I did when I worked in a windshield shop.