Toyota Tundra Forum - View Single Post

Skyhammer · #11 (**permalink**) 10-06-2009, 04:43 PM

Tox, I think you are probably right about the foam helping protect the windows, especially the window mechanism.
I have had nothing but problems with the windows falling to the bottom of the doors in all of my trucks since 1985.
The problem was from the windows bouncing up and down when the windows are in the lowered position, eventually leading to the window mechanism failing.
Nissan replaced the doors 5 times on my two Titans because of this. The windows on the Titan are much larger and heavier than the Tundra's.The Nissan rep eventually came to the dealer to see why I had this problem, and he said that he thought it was because I was driving on rough roads with the windows down, he was right.
I had the same problem on my 1st gen Tundra, but only once.
Before I bought my new Tundra, I called Toyota and asked if I was going to have the same problem with the windows I had in the past.
They said that is why the windows in the Tundra are now smaller and lighter than before and that they had done something structurally to take the pressure off the window mechanism when driving on rough roads with the windows down.
I would guess that the foam insert is what they added to the structure.
I have about 10k miles in 4WD on my ranch roads and notice that while the widows do move up and down a bit, it seems as though they impact is cushioned a little.
My 85 Toyota had the same problem and to this day the drivers window is inoperable, the entire window mechanism is fractured in several places because of the windows impact.
One way to lessen the impact is to keep the window up a few inches from the full down position, this keeps the window somewhat rigid and reduces the bounce.
Of course I could be completely wrong and foam has a different purpose.