Water leak from sunroof fix

[Kam 3]

Just a quick update to my paddling pool of water in the boot area.

I have the panoramic sunroof on my e61. The rear drainage tubes were blocked resulting in water flooding the battery compartment and spare tyre well. 

I removed the plastic trim either side pillar to gain access to a good portion of the drain tube. I cut the drain tube and blow compressed air down and up the tube. A lot of crud came out of the bottom of both tubes. I then got a half inch tubing to splice the two halves together again. The clear tubing allowed me to see the water draining down the tube to confirm the tube was clear. It also allows for easy access to repeat the process whenever needed.

I have some pics below and a short video to show the process.

I hope this possibly helps someone.