Headlight/marker issue
Thread Starter
Newbie
Joined: Sep 2022
Posts: 10
Likes: 3
'14 E250 Bluetec, '99 E55 AMG, '90 300E
Headlight/marker issue
I'm getting two errors on my left headlight. 2014 model with standard LED. First is a communication fault with the suspension module, and the other is side marker light output short to ground. The marker light works. I'm assuming these signals both go through the same connector and will just need cleaning. Does anybody have the wiring diagrams for this?
Out Of Control!!
Joined: Apr 2019
Posts: 11,921
Likes: 6,769
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
EASY....
-1- I have the same LED setup with the same fault from mis-matched software that is looking for suspension module.
MB TSB says to disregard this... to fix it youll need to update HL to a later firmware and hope for less bugs.
-2- Your second issue is internal and more of a concern most likely "stored".
Since you say it works, it is a transient created by the painted GND post nearby or ignore it until you can't. Nothing too fancy right now.
LED power regulation better have good GND... on the flip side cooked LED issue are not prevalent.
MB TSB says to disregard this... to fix it youll need to update HL to a later firmware and hope for less bugs.
-2- Your second issue is internal and more of a concern most likely "stored".
Since you say it works, it is a transient created by the painted GND post nearby or ignore it until you can't. Nothing too fancy right now.
LED power regulation better have good GND... on the flip side cooked LED issue are not prevalent.
Thread Starter
Newbie
Joined: Sep 2022
Posts: 10
Likes: 3
'14 E250 Bluetec, '99 E55 AMG, '90 300E
So, I tried a hail mary and it worked. I pulled the fuse for the headlight with the battery still connected and replaced it. Code is now staying cleared. I still get the suspension code, i'll see if the dealer can flash an update.
Out Of Control!!
Joined: Apr 2019
Posts: 11,921
Likes: 6,769
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Fantastic 👍
Let me know if your dealer can update your HL mismatched software or instead says "Just ignore it".
Like you I understand the buggy HL keeps swarming the F-SAM with junk packets... factory quality!
This may well be what's making SAM unstable (Reboot!)
Newbie
Joined: Dec 2023
Posts: 12
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2014 Mercedes Benz E350 4Matic
I’m having the same issue
