The numbers in your case were days of being over, keep in mind that there is a clock also in this time schedule: it can come dew by miles, time or viscosity:
Your vehicle will tell you when it is time for maintenance if the timer is reset right.
Make sure the dealer didn't sent the new vehicle prep man to crossfire class, they should have sent a working tech.
but to meet numbers they keep the tech working and send someone of least importance to class on this type of vehicles and send tech.'s to class on the engine, trans of body electrical try to talk to the person that went to class on the vehicle and see if he remembers any thing from the class if not you may want to take it to another dealership or a benz. dealer.