BMW TSB #B510320
2020 BMW Z4
Affected Component: STRUCTURE:BODY:DOOR
- WATER RUNS OUT OF DRIVER'S DOOR WHEN OPENING: If the vehicle is parked on an incline (front higher than the rear) water may not be able to flow out of the door. Upon opening the door water may flow out rapidly. The collected water does not run inside the car. The door seal creates such a tight seal that water can't flow from the door.