Location of the relay switch for the fuel pump for a 1996 Mercedes-Benz E 320

Question edited for clarity.
Question moved to model category.

105 for the fuse and 'O' for the Relay.

All the fuses and all the relays.

Fuse Box Diagram Mercedes-Benz M-Class (W164; 2006 ...

https://fuse-box.info > mercedes-benz > mercedes-benz-...

Here you will find fuse box diagrams of Mercedes-Benz ML280, ML300, ML320, ML350, ML420, ML450, ML500, ML550, ML63 2006, 2007, 2008, 2009, 2010 and 2011, get ...

Fuses W164 M-Class 2006-2011 Diagram, Box Location ...

https://www.mercedesmedic.com > fuse-box-location-d...

Fuse locations on Mercedes-Benz M-Class W164 2006-2011. Main fuse box and relay box is located in the engine compartment. Rear, passenger side in the trunk.
Model: ML 320 CDI ML 320 BLUETEC ML 350 ...
Years: 2006 2007 2008 2009 2010 2011
Chassis: 164

Question edited for a lot more clarity.
Question moved to model category.

These things have fuses boxes all over the place and are a nightmare to work on :>D

Fuse Box Diagram Mercedes-Benz M-Class (W164; 2006 ...

https://fuse-box.info > mercedes-benz > mercedes-benz-...

Here you will find fuse box diagrams of Mercedes-Benz ML280, ML300, ML320, ML350, ML420, ML450, ML500, ML550, ML63 2006, 2007, 2008, 2009, 2010 and 2011, ...

Fuses W164 M-Class 2006-2011 Diagram, Box Location ...

https://www.mercedesmedic.com > fuse-box-location-d...

Fuse locations on Mercedes-Benz M-Class W164 2006-2011. Main fuse box and relay box is located in the engine compartment. Rear, passenger side in the trunk.
Model: ML 320 CDI ML 320 BLUETEC ML 350 ...
Years: 2006 2007 2008 2009 2010 2011
Chassis: 164
Make: Mercedes-Benz

Fuses W164 M-Class 2006-2011 Diagram, Box Location ...

https://mbworld.org > attachments > m-class-w164
PDF
Fuse locations on Mercedes-Benz M-Class W164 2006-2011. Main fuse box and relay box is located in the engine compartment. Rear, passenger side in the trunk.
9 pages

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They hide them in the fuel tank Tracy.

https://www.google.com/search?q=1994+mercedes+benz+c220+fuel+pump+location

Also check the Fuel Pump Relay.

https://www.google.com/search?q=mercedes-benz+fuel+pump+relay+problems

..

iring, schematic, electrical diagrams, torq setting, error/fault codes, full assembly/dissembly, service instructions and a lot moreetc are basic contents of these online books they here on this website https://big-manuals.com/

I believe it is integrated in the K40 relay module in the front right engine compartment next to the ME control unit. I also believe the 97 W210 relay was moved outside of it. That fuel pump should be outside of the tank so it will be easy to test for power and ground at the pump if you are having a fuel related issue. I have replaced many more fuel pumps on these vehicles than relays. I usually replace the relay as a precautionary measure, but not because it failed. I hope this helps you.

MB doesn't use a reset switch (AKA Inertia switch) for the fuel pump

behind plastic panel behind battery if its same as later models

I had a similar problem once with an Audi. I found that the relay in that case was in a plastic box about 5" x 7" under the hood. At first, I did not even realize it was able to be opened then a friend popped it open and there were several relays,( in my case the fuel pump relay) and switches inside.

You might look for a similar situation. Seems the Germans have a habit of hiding things in plain sight. Hope it helps.

usually in the boot next to battery

you need to remove the cover behind the battery .
fuel pump relay ( K27 )

I hope this can help you.