Must something in the window frame and block the window close, try to use a small soft brush clean it.

 

maybe its off track a little bit. try to see if anything is blocking the window. maybe like a small branch or something

 

Nope, not off its track and nothing blocking it that I can see. Remember, it reversed after it was completely closed and "bottomed" against the top of the window track, not "almost closed". And why would it reverse in the first place? Actually, that is a very good question..... why did it reverse. Does the window mechanism have some sort of force sensor that reverses it if it thinks it has hit an obstruction? This was a warm summer day... I hate to think what it might do in the winter with ice on it if that is the case. I might not be able to get it closed at all.

I would run a test with the top of the window track blocked but I'm afraid of damaging something

Paul

 

Yes, these auto-up windows have a jam protection feature for safety. Typically this problem happens when the window is open and the battery is disconnected. This causes the window motor ECU to forget it's "home position." The procedure to "re-calibrate" the window is in the owner's manual, but I think you lower the window fully and then hold the button down for 2 seconds, then raise the window and hold the button for 2 seconds after it gets to the top. A similar procedure is used to reset the moonroof.

 

Ah, that could explain it (except that the battery was not disconnected and we didn't have an EMP). I assumed the mechanism was the same as all the other mechanisms I have seen where the motor is designed to stall and there is an overload device that senses the stall current and shuts off. If the mechanism is actually keeping track of position, all sorts of interesting failure modes come to mind

Off to read the manual more deeply.......

I'm back from a deep dive into the manual. You're right. For whatever reason, the mechanism apparently got confused and my attempts to get it to close again eventually re-calibrated it.

I also read through the moon roof calibration procedure... wow, I'm glad I don't have a moon roof

Paul

 

Take a trip to dealer to fix it before winter come, it would under 3 years warranty.

 

Nothing to fix. It was a one time event and has not recurred. I also don't hear any change in the tone of the mechanism as the window nears the top of its travel so I don't think anything is binding. At least I know how to deal with it if it happens again.

FWIW, the manual seems to indicate that only the driver's window has this feature.

Paul

 

maybe because its the only window with the auto/express setting ?

 

That's correct. I drove a 2011 Camry recently and it has auto up/down on all 4 windows!

 

One thing to add, for me the vehicle needed to be running for the re set process to work.