[x3sm]

I found a few leaks in my 2011 BMW X3 after a few days of hard rain. I never had this happen in any car so I'm a bit upset to say the least. I found water in 2 different spots. A few drops on rear seat driver side and inside the rear battery compartment. I noticed that drops on the rear seat came from the little plastic cover where you would hook a net. I opened the moonroof shade to expose the rails and stuck my fingers between the glass and rail and sure enough it had some water. The battery compartment had a lot more water in it, which is kind scary lol. I do have roof rails on my car and panoramic roof, should I drop the headliner and clean the drain tubes? Also does any on know what Rain gutter is in this car ? part number 54107293442.

Thank you