Originally Posted by jay_bob

Awesome link for anyone who has a 211:

Welcome to the W211 E- Class!

Specifically have a look at electrical/fuses/, you will see that X58/1 is the interior socket, fed from a 5 A fuse in the F33 fuse block, fuse f86. This block is in the trunk.

Also note that MB provides a card in each fuse box that cross references all the other fuse holders and their loads.