Hey all, I just changed the oil in my ML320 and tried to reset the FSS per the manual and searching on here, but now it is contiously flashing and I cant get it to go back to the odometer or trip odometer. What have I done

I tried to reset just like what ive read but just stayed flashing, no beep or anything. Anyone have any suggestions w/o me hopefully having to make a trip to MB.
Thanks in advance
Brian