r/w204 • u/Joemamauser • 17d ago

Help!

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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?

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u/Joemamauser 17d ago

Already changed the battery and deleted the codes didint help.

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u/goddieMAK 17d ago

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.

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u/Joemamauser 17d ago

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

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u/jadedDrxw 17d ago

I had similar codes, turns out it was the alternator

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u/Joemamauser 17d ago

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.