hmm on nmy car it says its a child saftey thing..but its prolly just a cover up

 

Hmm...well i could be wrong. But thats what I always thought it was because of lack of space.

 

If its aftermarket then your gonna have to replace the part with the same aftermarket or similar. But if its goin up slow and stoping the motor is beat or the window is badly adjusted. Either way minus adjusting you are gonna need to replace the motor, the switch is an on off. The only way it could be the switch is if its not giving full amprage, which is rare.