New Owner Need Diag help!!!
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Joined: Feb 2026
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From: Agawam Ma
04 e55amg, 05sl500, 05 c55amg 2011 e350, 2011 e550
New Owner Need Diag help!!!
Hello all, I am now the owner of a 04 e55amg with a dtk600 kit. The car is an absolute blast. I am having some problems that are now snowballing so plz bare with me. I have been struggling with a hard start, especially when hot. Throws a P0335, which is a crank circuit A code. First instinct was to check fuses, all good, replaced sensor with one from dealer. No difference. Plug looks ok, but wires disappear into the abyss. Does anybody have a schematic? This is where things take a turn for the worse. I was looking through the wiring by the fusebox and ecu and noticed through one of the "air slits" on the fusebox some corrosion. So I removed it, disassembled very carefully and cleaned with some contact cleaner and a soft toothbrush. Was very careful to not bend any pins and be gentle. Reinstalled and now the car wont come out of park, esp, abs, and srs light on. Don't have the exact codes on hand but it was sam communication codes. I double checked where I plugged in all my connectors into the fuse box and noticed only one blank, I11.
I believe I may have bricked my fusebox somehow not sure if anyone has any thoughts, thanks
I believe I may have bricked my fusebox somehow not sure if anyone has any thoughts, thanks
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Joined: Jan 2014
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From: Republic of Texas
'99 and '05 E55 AMG
https://charm.li/Mercedes%20Benz/200...%28113.990%29/
Schematics are in there as .pdf files versus WIS hot-linked files.
EDIT: the .zip file is 1.2GB in size. My copy of Win11 chokes at 1.0GB and aborts the process. I use an aftermarket download manager called "Free Download Manager" for the files >1.0GB. And I had nothing to do with the name of the aftermarket download manager.
PM me your email address and I'll send you a lot of technical documentation to familiarize you with your car. It's complicated.
You seem to have a CANBUS communication issue with the front SAM so see attachments to point you in the correct direction. YouTube videos on troubleshooting CANBus also assist. It can be difficult but it is not impossible. Search on my user name and look for anything relating to "CANBus diagnostics".
Schematics are in there as .pdf files versus WIS hot-linked files.
EDIT: the .zip file is 1.2GB in size. My copy of Win11 chokes at 1.0GB and aborts the process. I use an aftermarket download manager called "Free Download Manager" for the files >1.0GB. And I had nothing to do with the name of the aftermarket download manager.
PM me your email address and I'll send you a lot of technical documentation to familiarize you with your car. It's complicated.
You seem to have a CANBUS communication issue with the front SAM so see attachments to point you in the correct direction. YouTube videos on troubleshooting CANBus also assist. It can be difficult but it is not impossible. Search on my user name and look for anything relating to "CANBus diagnostics".
Last edited by bbirdwell; Feb 17, 2026 at 03:05 PM.
MBWorld Fanatic!
Joined: Jan 2014
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From: Republic of Texas
'99 and '05 E55 AMG
Thread Starter
Newbie
Joined: Feb 2026
Posts: 6
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From: Agawam Ma
04 e55amg, 05sl500, 05 c55amg 2011 e350, 2011 e550
I am a new member and do not yet have this function. Feel free to send it to my burner: ccspr07@gmail.com
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Newbie
Joined: Feb 2026
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From: Agawam Ma
04 e55amg, 05sl500, 05 c55amg 2011 e350, 2011 e550
Thank you very much these schematics are incredibly helpful with putting locations to names. Do you happen to have an ecu pinout so I can find the crank position sensor wiring from the sensor to n3/10 the ecu?? Thank you
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Thread Starter
Newbie
Joined: Feb 2026
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From: Agawam Ma
04 e55amg, 05sl500, 05 c55amg 2011 e350, 2011 e550
Little update, I am still chasing this issue. I found that the fuel damper was leaking onto map sensor. I have replaced both to no success, I did ohmn check the 2 wires from the ecu to the crank sensor, both seemed to test good. I found that my ESP module had offed itself, so that problem is solved. But the hard start and crank circuit code still persist. Depending on which scanner I scan with I also get a cam sensor. I have replaced the cam sensor but think I am going to pull the supercharger to start tracking wiring.
Does anyone know directly what is connected to the crank circuit?
Thanks
Does anyone know directly what is connected to the crank circuit?
Thanks
Thread Starter
Newbie
Joined: Feb 2026
Posts: 6
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From: Agawam Ma
04 e55amg, 05sl500, 05 c55amg 2011 e350, 2011 e550
A quick update if anybody as any thoughts. Took the car to a very well known benz mechanic. They found some chewed wiring for the camshaft sensor, fixed and replaced sensor. Car was apparently starting well for a while but then as it was explained to me, learned that the timing wasn't correct and is back to hard starting. I was advised that the timing chain is probably stretched but at 142k miles I have a hard time believing that. With owning and seeing many m113 cars go well above without trouble. There are no weird chain noises or rattles on startup and when running the car pulls very hard.
Any thoughts appreciated.
Any thoughts appreciated.
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2005 e55 AMG
It is not going to rattle. There is a oil pressurised tensioner,side of block,next to the alternator that will put constant tension on the chain all thew out it's life span so no rattles or noises.
You can pull the valve cover and time the engine watching the balancer and camshaft for number 1 cylnder and see if it is in spec and If not the chain is stretched.
You can pull the valve cover and time the engine watching the balancer and camshaft for number 1 cylnder and see if it is in spec and If not the chain is stretched.
