Slow/Stuck Power Windows - Dried Factory Grease on Scissor Lift Assembly

Power windows become extremely slow or completely stuck, particularly the passenger side window. The window motor appears to be failing but is usually still functional.

The factory grease on the window scissor lift assembly rails and wheels has dried out over the decades, creating excessive friction that prevents the motor from moving the window properly. The motor itself is usually fine.

High confidence — Multiple community members agreed on this solution