Hi, I have owned my 2006 Mercedes C180K Estate for the past Six years, and always had it serviced by mercedes dealer, however this time I serviced the car myself using mercedes parts, oil,air and pollen filters and correct oil. However I am unable to reset the service indicator. I turn the key to position 1, scroll down menue untill I get service indicator, then hold down reset button, but all that happens is that eventually the screen reverts the milage indicator. has anyone encountered this problem or can anyone assist please?