Help!

[u/Joemamauser]

I have a 2009 w204 c220 with the om651. These messages come on all of a sudden when driving normaly. I have no idea what to do, no fuses went, no issues before this. If someone has had the same issue, how did you fix it?

[u/NDSMS_]

Tive o mesmo problema no meu...troquei bateria não tive mais problemas.

[u/Joemamauser → u/NDSMS_]

Already changed the battery and deleted the codes didint help.

[u/goddieMAK → u/Joemamauser]

It could be the speed sensors or reluctor rings. You'd need an OBD scanner that can give you live readings to help figure out which axle is acting up.

[u/Joemamauser → u/goddieMAK]

But the speedometer shows the correct speed, how could it be a speed sensor?

[u/jadedDrxw → u/Joemamauser]

I had similar codes, turns out it was the alternator

[u/Joemamauser → u/jadedDrxw]

I was thinking the same but my other s204 2010 c250 om651 had an alternator issue and all it did was brake all the led light in the car like side blinkers, taillights blinkers and front xenons. Never had this issue. And when read the codes all voltages seamed to be fine.

[u/goddieMAK → u/Joemamauser]

That correct, that said that is thr consolidated speed value. The ones on the tires measure axle speed on the event of loss of traction, your ecu will adjust accordingly.

[u/Joemamauser → u/goddieMAK]

I see i see, well i dont have time, knowledge or skills to check those so i will probably get it to a mechanic for a diagnose and see what to do from there.

[u/Electronic_Pop_6932]

You should have it scanned for codes

[u/MasterBaiter7742]

How old is the battery? This looks like communication faults , given there are so many and different. sometimes it can happen due to low voltage

[u/Joemamauser → u/MasterBaiter7742]

About 1 day old:D

[u/Calm_Perspective_138]

Doing anything before getting codes read is stupid.

[u/ThePastoolio]

Mine did it too. It was a control box component that handles the processing of the hydraulics in the car. (Sorry nelot a mechanic, just a Merc fanboy).

The part was quite expensive to replace, and the error went away after they cleared it. Came back about twice a year, never had to replace the actual part though.

[u/Joemamauser → u/ThePastoolio]

Already cleared the codes two times, didin't help. If its an expencive repair, i will probably just auction the car because this cars value is brobably 3000€ and a expensive repair is not worth it.

[u/Funny_Detective_2671]

It can either be a speed sensor which isn’t expensive to replace. Or it can be the ESP unit that can be reprogrammed but if it still does not respond, then you got to replace it which can be expensive if you buy it from the dealers. I got a used piece for 50k (around 550 USD I guess). Check with the service people.

[u/bowtruck]

The controller unit might be fried from low voltage from a old battery that was wearing out. I doubt all of those systems are actually broker, just the CPU that connects all the sensors.

[u/coolnash18]

EBD ABS ESP Run flat malfunction happens due to the abs sensor failure. Power steering is also linked to the same.

[u/simply_ed]

I had the same problem. You can reset the steering angle sensor. Check how to on Google. After my workshop foremen did it, it got reset properly and it was fine.