Electrical Malfunction?

I am having issues with this malfunction notice coming up on the screen, I am not having any problems with starting or any other electrical components. I have just purchased this car and its in mint condition but was stored in a garage for 1 year. What could it be. The car is a 2002 E240 Elegance. Thanks for any help.





Not only with SBC you have 2 batteries to check, but W211 proved to be very sensitive to voltage drop on any loose connection.
Battery testing is the easiest thing to start, if you have load tester and know how to use it.



