water inside car
 

After heavy rains there is water next to the rear seat, close to the door. Could this be from the door or the sun roof? All door seals OK

Take the door panel off and re-seal the foam vapor barrier. I had to do this on all 4 of my doors as I had a flood of water under my carpets and on the floor boards. 4 days with a heater and a dehudifier inside the truck and everything dried out luckily.

The sealant BMW used fails.

Hope this helps.