I have done similar for Front SAM
https://mbworld.org/forums/e-class-w...-87m-50-a.html
https://mbworld.org/forums/e-class-w...10-sheets.html

I have completed nearly similar task for Rear SAM, so I am sharing.
I am getting more forgetful nowadays ...LOL.
So this booklet is for me to keep and to share. It shows some mistakes in MB official wiring diagram and important notes for when you want to know more of Rear SAM.

Rear SAM allows us to take power from it for accessories or whatever you need, is is so easy to access compared to Front SAM.
There are many SPARE fuses slot prepared by MB too.

Rear SAM is also the comfort devices fuse box.

Due to 50 or so variants of W212 and so many engine variants, there are bound to be mistakes on even MB own fuse list print :
Document title Fuse assignment of fuse and relay box in trunk. Document number gf5415p125606fl

If you clean up 10 sheets of Rear SAM wiring diagram to only have the devices/modules your car has, you would remove at least 50% of the content of the wiring diagram, yes there are so much
information cramped into them diagrams, you end up getting migrain sorting out which ARE NOT FOR YOUR CAR. It is also confusing sometime to verify certain devices from purely a wiring diagram
and not inspecting the device in real time as minor changes are made between years and pre vs post facelift models.... where you can never know until you see the real device and see the total wires
into them and the color of the wires.

What I did is filter the information and remove what is not for my car to the best of my ability. Some fuses true assignment I have verifed, most I am too lazy to verify.
If you engine is M276 3.5L or M276 3.0TT, we share a lot in common , but depending on what options level your car has.
To verify is to remove the fuse and see if the said device loose power and scan what DTC it will produce, that is how I do front SAM.
For Rear SAM I am too lazy to do that, but I did verify each and every fuse to the Rear SAM 10 sheets wiring diagram, like I did with Front SAM.

One learns a lot about how the car many modules will react to power loss and what DTC it will produce. This also teach us how they are related to one another in their direct or indirect reporting of DTCs.
47 modules on mine, 37 are CAN BUS type and 10 are LIN type as per Xentry scanning, but actually more than 10 LINs if one care to see all wiring diagrams.

So find attached and if you want to "clean-up" your own fuse list, go head.
I have prepared tables where you can find which fuse/s are listed in which of the 10 rear SAM wiring diagram and believe me, its so time consuming to sort these out.
Rear SAM wiring diagram 10 sheets are not a true one big diagram cut into 10 pcs, its more complex than that and can be confusing because even if you sticth all 10 into a 3 meters paper,
you will find it wont match well...ha ha ha. Its like 10 different engineers each making 10 wiring diagrams to suit their own task, their way, their method.

I have made Relay Tree with its fuse downstream or if upstream, if you read you will understand how it can be useful someday, as a Relay is also a potential failure point.
I have also compiled Circuit 30 and Circuit 30g into their own table, aside from a master table.
This way when Circuit 30g is lost, aka K2 relay of Front F32 Prefuse timed out or gone kapoot, you will know with ease which fuses will loose power.
The same ease goes for the always HOT/Live Circuit 30 ( battery direct ), this will also tell you the dangerous fuses which you will need to disconnect battery if you want to work on them,
or when and if the hidden Fuse97 100 amps is blown what fuses downstream will loose power.

The document : Rear SAM for W212.065 E400 2014.pdf explains how a B03 Eco-Start-Stop Rear SAM is all about, not just my car.

Have fun..............