Papap,
Did you also refill the DEF fluid?
I have a 2011 MB Sprinter without the steering wheel buttons but I'm only at 6500 miles so I'm not sure how the DEF warning displays yet.
Since oil changes and DEF fluid refills both occur at 10K miles you could also be low on DEF.
Roger
I also have a 2008. Am I doing something to simplistic? I drain oil, replace filter, add 13 full quarts, never more never less, never CEL or HI or LOW oil light.I have a 2008 and the mb dealer said light is very sensative. Real issue and tiny amounts either under or over will cause it to come on. I get a oil can indicator