"Lazy" rear window

[IanL]

This happened yesterday:

Lowered the roof and then raised the windows. Usually the left front is a couple of seconds ahead of the right. This time the right was about 8 seconds behind the left - smelled a rat. Looked around for anything amiss, and the rear right window was only half up. Whether it only half-lowered when lowering the roof, or half-raised when coming up , I can't be sure.

Anyway, I lowered the right windows again, but the rear one didn't respond - tried raising - still nothing. Lowered again, and this time, when the front was down and the back wouldn't move, pressed the lower button again. That did the trick, the window went fully down, and then came up when I operated the raise control.

Worth remembering, I think.

[johnbrander]

Lubricate the unit by spraying some down the channels (silicone spray or WD) usually works for me ! Will need to clean the glass off afterwards as it gets everywhere

[IanL]

Thanks, John. If it happens again, that's what I'll do.

I suspect the controller (the roof ECU) does not detect "rear window up", but deduces it from "time since raise order issued" and "rear window motor stopped". So if the window sticks, it just works on the time-out. Though it doesn't explain why it needed two commands to lower, so it may be more complicated than that.