'99 Saab 9-3 convertible top will not go all the way back up?

My Saab 9-3 convertible top will not completely go up. Everything works except the rear window will not go back down, completing the last step. I refilled the hydraulic fluid already. When this happens my truck is also unable to be opened electronically, not sure why. Every other part of the convertible goes back... show more My Saab 9-3 convertible top will not completely go up. Everything works except the rear window will not go back down, completing the last step. I refilled the hydraulic fluid already. When this happens my truck is also unable to be opened electronically, not sure why. Every other part of the convertible goes back and forth.
Update: I just turned the headlights on and the convertible works correctly now. Why??
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