EBD, ABS and ESC Inoperative - Also no power steering
I had a very similar issue with my '05 C55 and did pretty much all you've mentioned. Car was in the shop for 6 months. The problem with mine, because Mercedes, was that the gas pedal module was intermittently sending a fault to the PCM, and thus provoking all the issues. Couldn't hurt to have it diagnosed by a shop and ruling that out. Best of luck.
I had a very similar issue with my '05 C55 and did pretty much all you've mentioned. Car was in the shop for 6 months. The problem with mine, because Mercedes, was that the gas pedal module was intermittently sending a fault to the PCM, and thus provoking all the issues. Couldn't hurt to have it diagnosed by a shop and ruling that out. Best of luck.
The unknown here are the generic Control Unit faults (5001, 5944, 5945) that's not associated to a specific sensor but the control unit itself.
Last edited by raphman; Jan 31, 2017 at 09:00 AM. Reason: misspelling
I was going to replace the module then it decided to stop faulting with zero intervention. Knock on wood has been fine ever since.
Good luck mang, hope it's resolved!
Jasonoff - you seemed to be troubleshooting this the most - did you ever get it sorted out 100%? Did you end up swapping the module, and if you did, what did the dealer charge to code it to your car? My battery is pretty old and likely due for a swap so I'm going to get it tested and replaced tomorrow. I'll then try the lock to lock steering reset, and also clean the wheel speed sensors. BTW, the wheel speed sensors are the ABS sensors correct?
We'll see if these resolve the issue. If not, I may try to buy replacement sensors from the dealer and swap em tomorrow. I'll save swapping the module for the last step. $500 or so for the module itself seems doable - I just don't want to be charged twice that by the dealer just to code it to my vin..
If it's a control module code, it's something either in the module or a communication error.
I think in my latest case over a year ago, when it was control module error codes, it had to do with writing tunes. Something may have gotten into a error state loop.
I'm willing to guess more than half the the time replacing the module was unnecessary.
The Best of Mercedes & AMG
Disabled the auto lock before setting out. Also did the lock to lock steering reset someone mentioned. Drove about 30 miles since morning going to and from Autozones and no ABS errors yet. Battery test showed low charge. Considering the age of the battery, bought a new one. Will swap battery, clean off sensors and cross fingers...
AFAIW know, any ESP message up on the screen will be logged by the module. When I first scanned mine it had tons of stored faults.
Was fine for nearly a year. May be time to just replace the POS...
EDIT: Star diagnostic scan appt with the dealer set for the 13th.
Last edited by Jasonoff; Jun 1, 2017 at 05:05 PM.
How was your visit to the dealer? Is your issue resolved now? Could it be a new OEM battery like FEZZ00 said?
FEZZ00-
Has your error returned since swapping to an OEM battery?
My error just returned again on one of the days I need my car the most... I had cleaned the wheel speed sensors when I first saw this error. Also have a new battery but not OEM. And I also disabled the auto door lock. Error still came back out of nowhere. At work now so didn't have time to fiddle. I will try taking my EC tune off later today and go back to stock ECU as that seemed to make the error go away the last time I ran into this.
My battery is only a year old and I tried a deep cycle charge over night as part of my troubleshooting before going to the dealer to rule out the battery.
It's just a POS module in a bad location.
Having my ESP module replaced today and BenzWorks is coding the unit for me today.
My battery is only a year old and I tried a deep cycle charge over night as part of my troubleshooting before going to the dealer to rule out the battery.
It's just a POS module in a bad location.
Both could have been mis-information though.
Curious if the tune has anything to do with it. But doesn't explain why it ran well with the tune for the past few months. Of course, it could also be the resetting process that did it.
Anyway, I'm good for now. Maybe I'll get that module swapped. But what's there to say the replacement won't do the same..ugh
Curious if the tune has anything to do with it. But doesn't explain why it ran well with the tune for the past few months. Of course, it could also be the resetting process that did it.
Anyway, I'm good for now. Maybe I'll get that module swapped. But what's there to say the replacement won't do the same..ugh
I have yet to find anyone who knows how the module works.
For anyone who has replaced their old one and want to send it to me to open up I can share what's inside. Could be something obvious that's damaged etc...
I will call and ask Serge if that is the case, hopefully not since my mechanic removed the old one before driving it down lol.
I don't know about re-coding a used one I bought brand new from dealer.








