W211 Fuses, Relays, SAM Modules chart



This link points to a two page PDF file which prints nicely for those who want to fold it up and keep it in the vehicle for future reference: http://kropf.net/w211/W211fuses.pdf
For any without a PDF reader, images of the PDF file follow:


Jun 18 2019: I updated the .pdf file to include most relay numbers, and a few other edits.
Last edited by Kropf; Jun 18, 2019 at 01:45 AM. Reason: Updated the .pdf file to include most relay numbers.
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This link points to a two page PDF file which prints nicely for those who want to fold it up and keep it in the vehicle for future reference: http://kropf.net/w211/W211fuses.pdf
For any without a PDF reader, images of the PDF file follow:






Harness variations:
Start of production to 20 March 2003, 21 March 2003 to 31 August 2003, 1 September 2003 to 31 May 2005, 1 June 2005 to end of E55 production.
Front SAM:
Position kR in the first document is the air pump (non-AMG) or oil cooler fan relay (E55 AMG model).
Rear SAM:
Position kA in the first document is fuel pump relay (non-AMG) or heat exchanger coolant pump relay (E55 AMG).
2005 and 2006 E55 AMG:
Model year 2005 has the fuel pump relay and fuse located on opposite side of trunk from the rear SAM; only accessible by removing the trunk panel; no access port.
The model year 2006 has two each fuel pump relays in the same location.
Model year 2005 and 2006 air pump relay and fuse are located on opposite side of trunk from the rear SAM adjacent to the fuel pump relay(s).
Early W211 E55's (model years 2003 and 2004) have fuel pump relay and fuse in same location as the 2005/2006 models but the air pump relay is located in engine compartment next to auxiliary battery.
Based on this thread:
https://mbworld.org/forums/w211-amg/...ml#post8984193
Early 2003 E55 appears to have the fuel pump fuse located in the Rear Pre-fuse block. I am aware of one very early production E55 where the fuse was incorporated into the relay housing. This one example is the only one of which I am aware.
Photos attached show location of model year 2005 E55 AMG air pump and fuel pump relay locations and what a bad fuel pump relay looks like.
Last edited by bbirdwell; Jun 11, 2024 at 08:11 AM. Reason: Updated air pump relay info and model year relay info
somehow they are not functional
Thank you
This link points to a two page PDF file which prints nicely for those who want to fold it up and keep it in the vehicle for future reference: http://kropf.net/w211/W211fuses.pdf
For any without a PDF reader, images of the PDF file follow:


Command had been working mostly... It would intermittently take a break after operating for a while and then power up later. This went from an hour of no tunes to 2-3 days of no command. Then no Command.
Fuses are all good.
Edit: power through the fuse... Even using a test light with an incandescent bulb so it will pull some power didn't sniff out the fuse that had high resistance on the blade of the fuse sending power to Command. Testing it again with low ambient light... What are these little arcs as I probe the fuse with the test light? Replace the fuse and problem solved.
Ahh the joys of intermittent electronic issues.
Still trying to find source of #4 cutting out with heavy load... Key off and runs again.
Last edited by JohnLane; Feb 2, 2017 at 03:23 PM.








