1991 Infiniti Q45 driver side rear window keeps falling down what can you do to fix it?

If the driver side rear window of your 1991 Infiniti Q45 keeps falling down, the issue may be related to a faulty window regulator or worn window tracks. Start by removing the door panel to inspect the regulator for damage or misalignment. Lubricate the window tracks and check for any broken clips or components that may need replacement. If the regulator is damaged, consider replacing it to restore proper window function.