W121 E 350 Sport Standard single piece sunroof.



I need some help finding out how to get to the rear sunroof drains on my car. I have cleaned the fronts one easy to see and get to. I don't know how to get to the rear drains. I have cleaned out the front sunroof drains and verified they are working correctly now. If I could find out where they drain to, maybe I could blow some low pressure air through them to clean them. Or some detailed information on how to get to the drain from the top to try to vacuum them out or??? I don't know how to get to them.



During a heavy 2 day rain I ended up with water on the passenger side floor, both front and back. After cleaning the front drains, if I squirt water toward the back of the sunroof (with it open) I get some water running down the pillar between the front and back door. The water of course ends up on the back floor at the base of the pillar between the doors. From what little I have been able to find on line the rear drains do not go down the pillar, but I can't seem to find out where the do run and exit the vehicle.


Thank you in advance for any help.
I really appreciate it.


Harvey