Service light already on and its been less than a week!?

So I just picked up my CLA edition 1 last week and this morning as Im driving my parents around in it for the first time my yellow check engine light came on.

Has anyone had any experience with this yet?
Unfortunatly I dont have the maintenence package added on yet (my benz manager was kind of a jack *** and never returned my calls when I tried to add it on this week)


Nevermind. It looks like this issue has already been discussed.