On my 2000 Toyota Sienna, the driver's side power window behaves strangely. The window rolls down just fine. However, when closing it, it begins rolling up in the normal rate, but half-way up gets slower until completely stops. I then wait some time and able to continue the roll-up some more - and repeat this sequence until it is completely closed.
Basically, you can think of it as if I "charge" the window motor's very "small" battery, which depletes on the way up. Then repeatedly allow it to "re-charge" and get depleted again while gradually rolling up.
What is the cause of this behaviour?
What part do I need to replace/service?