I work at the dealer and there is no such thing as recaibrating the air intake after replacing the air filters. they are drop in and go. now the diesel filters are more complicated to change then the regular cars, a bit more work is involved, but you replace them and thats it. now a check engine light relating to the air filters is usually caused when either the filters get extremely clogged with some type of object or dirt.
I have an 2011 ML350 Bluetec. I'm getting ready to replace my air filters until I look under the hood. You are right, there is more work than my previous MB's I have owned. How in the hell do you remove the boxes to replace the filters? Any help would be greatly appreciated.