Quote:
Originally Posted by j-mac
I am having the exact same issue (could be pics of my '03 X5 4.4i) and have cleaned the sunroof drains using some grass trimmer line and air, but could fine no blockage.
When I cleaned up the mess I also found water under the spare and in the bottom of the battery compartment. I checked everywhere else on the X, but nothing was wet. No carpet, liners, sound deadening material, nothing. How is it possible to get so much water ( a good 2+ inches as in the pics) in this location, without anything else getting wet, if it came from the sunroof. This weekend I am going to check the bumper area and see if that is where my issue is. Good luck with yours.
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In your case, most likely the rear drains are disconnected or clogged vs the fronts being clogged. I'd peek in the rear of the headliner and see if the drains have come loose. If they're still fully attached I'd park nose up on an incline like a driveway and pour some water in the sunroof channels to see if it is flowing properly or backing up and overflowing out the back of the the sunroof cassette.
If the rear sunroof drains are operating properly and that's not where the water is coming from, it could also be from a leaking body seam under the tail lights... run the hose over the tail lights and see if water comes in from under them. Let us know if you find anything.