Hi did you reset your changes back to the original settings?

I have attached 2pics of how to reset back to factory. Good luck.

 

Thank you for the help, i had done what you sent me, what i really need is a factory image reset, probebly only a mercedes help office can help me.
Thanks a lot.lEdited by: Martinrb1

 

You could return to the dealer and tell them it's stopped working, you really shouldn't be entering the engineering mode and they may find you liable.