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When installing a replacement window lift motor, do I have to worry about the motor being in a specific position (as far as rotation is concerned)? Or does the motor stop at the top (closed position), and bottom (open position) based on resistance or something?

I know I will have to pay attention to where the motor engages the gear, but does the motor have set stop points?

I don't want to put the new motor in and have it smash the window as it tries to close it beyond the close position, or not close/open the window all the way.

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Ever try rolling a power window up when it is already up? It tries, but it doesn't go anywhere--and nothing breaks. The answer is no; it does not matter where the output shaft/gear of the motor meshes with the driven gear.

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