power windows on 1996 BMW 318i

Whenever i hit a bump in the road all four power window come down about two inches.

Asked by for the 1996 BMW 318i
2 answers
If they come down because they are ELECTRONICALLY being controlled to come down, you need to replace your power window switches.
If your power windows come down because of the force if inertia pushing them down via the bump in the road, then i would say you need to replace the worn out motors.
IS THE DOORS LOOSE? IF I DON'T CLOSE MY DOOR GOOD IT WON'T GO UP.IT IS LOOSE SO WE FIXED IT IN THE DOOR JAM.I THINK THESE CARS HAVE A MIND OF IT OWN.