My Battery is dead in the morning. To find the draw, I traced the prefuse box bottom line in the trunk and where the diagram shows that the line leads to the N10/2 Rear signal acquisition and actuation module (SAM-R).
Where is the n10/2 and how to find the draw there

 

I am stating to get excited because I am getting close to finding the draw
Rear signal acquisition and actuation module (N10/2)
• Operating all rear lights
• Controlling substitute light functions
• Turn signal master
• ATA master
I also have problem with openning the doors from distance. is the ATA MASTER responsible for that and if so where can I find it
Where can I find all of these

 

Here you find some general info, hope it get you closer...
http://bayhas.com/mercedes/w211/contents/INDEX.htm

 

Thanks for the info. it seems like it helps a lot. I am going to replace the fuse box in the trunk because was immersed half way in water just like many of the modules in the car. I have replaced many of them but this one i tried to clean it