This is what i did to mine.
turn the key to the position just before starting.
go the mileage screen.
with the arrows go to the service A section
press the reset **** until you get a question asking if you want to reset
then you can take it from there and it worked on my 2002.

 

yes you can do it your just not doing it correctly

 

mr. c230k black on black, how long did you hold the reser button?????
I´ve tried some reset procedures that i´ve found in this forum but doesn´t works.
It´s a C180Kompressor 2003 if any body can help please....

 

Sorry but I was doing the wrong way
In the last position befor ignition star I wento the service warnings and holded the reset button until the dash ask me if I wanted to reset it .... i worked
MANY TANKS TO EVERYBODY

 

worked great on my 06 C230 sport! Thanks a million mrcoyote!

 

Also worked on my 06 230 sport. Screw the MB dealers. Sad when I can say my dealership customer serviceexperience with my last 2 MB's bought new has been worse than the last Ford I owned.

 

I tried this on my 2003 C240 and got it to work. I would like to post a different version of the instructions that make things a little clearer for me. I want to thank mrcoyote who posted this, this is all his work, I just changed it to make it clearer for me to follow the next time I need to follow these instructions.

TO REST THE SERVICE A OR B on this car:

1) Turn key to the #2 position. There has been discussion on whether the door had to be open or shut, I did it with the door shut. The key to this step is that you have to put the key in the ignition and turn it to the #2 spot when you put it in. If you have the key in and turn it off and on it will not work, it has to be the initial entry, the fan should come on the check engine light, etc. as if you were getting into the car the first time. DO NOT START THE CAR.

2) Scroll Menu button on upper left of steering wheel to show the mileage.

3) Use the arrow up/down to show the SERVICE A or SERVICE B icons....there will be one or two wrenches showing.

4) Hold the trip reset for approximately 10 seconds. It will prompt you if you really want to reset the service interval.

5) Let go of the trip reset button and push it in again. It will tell you that the interval was reset.

 

mrcoyote here......your welcome!
I hope posting helped a lot of people who otherwise couldn't figure it out.
Pictures of my spark plug change coming soon!

sincerely, mrcoyote......2005 C230K with 103,000 miles

 

I tried it on my 06 C230 and it worked, but it restarted back to B and I want it on A. Am i doing something wrong, or do i have to do it another way?

 

Thank GOD 4 U!!! 2002 c230. cleared it w/ no problem!!!!!!!!!!!!! buti gotta do it again in 10000 miles