Electronic rear axel inoperative message




Have had the car for about one year now, C63s coupe. I´ve got this message twice in the last week, however the car still drives perfectly.
Furthermore when I stop and start the car again the message goes away.
Any help more than welcome
Thank you very much!




Hopefully is not a real error as you say, let´s see if it never comes back!
I didn't notice a difference in usual driving, but in race mode taking corners fast in the canyons, the diff would not lock and it would spin just like an open diff car. Handled absolutely awful, applying throttle on corner exit with trac off or even in sport handling mode would upset the car, but again in normal street driving and even moderate speed corners it was okay. I took it to the dealer and they updated some software etc and haven't gotten the message again. Seems to work great now. Good luck
Last edited by 4LTwinTurbo; Apr 8, 2018 at 05:54 AM.




I didn't notice a difference in usual driving, but in race mode taking corners fast in the canyons, the diff would not lock and it would spin just like an open diff car. Handled absolutely awful, applying throttle on corner exit with trac off or even in sport handling mode would upset the car, but again in normal street driving and even moderate speed corners it was okay. I took it to the dealer and they updated some software etc and haven't gotten the message again. Seems to work great now. Good luck
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After replacing the entire differential and updating software car was amazing for a month but now I get this floating feeling in Sport plus mode, passing and changing lane last week scared the crap out of me as car went left right left right as if I was sliding.
Don't know if m diff is acting again or could it be alignment issue?




Question is, is the diff really not working or is it just a fake error?
Thanks!








Last edited by benzbell; Jan 29, 2019 at 10:11 PM. Reason: text
i dropped off my car last Thursday, and it is still at the dealership for this issue. They are changing the temperature control pump, for some reason, but I have no idea what that has to do with the rear diff. The dealer hasn’t mentioned anything about updates or wires, so we’ll see what happens.
i dropped off my car last Thursday, and it is still at the dealership for this issue. They are changing the temperature control pump, for some reason, but I have no idea what that has to do with the rear diff. The dealer hasn’t mentioned anything about updates or wires, so we’ll see what happens.
well, it seems they haven’t figured that out at my dealer yet. I told them that when I dropped it off, and they said they would check. Still at the dealer. They are waiting on Mercedes Germany on how to get rid of code. It has been over two weeks, and I’m getting tired of waiting.
They erased the faulty memory and installed a software release of AMG Suspension Control Unit.
Keeping your car for 2 weeks sounds ridiculous when other dealers are doing it same day!
They erased the faulty memory and installed a software release of AMG Suspension Control Unit.
Keeping your car for 2 weeks sounds ridiculous when other dealers are doing it same day!


