How do I reset the service message showing Service C Required from my dash. I have a ML 320 2008?

 

You take your car to a shop, have the service performed and they will reset it when done

 

Reset Service Indicator
1. Insert key into ignition, switch to position “1“.
2. Press buttons or repeatedly until the mileage is displayed within the Multifunction display.
3. Press cluster illumination button (R) 3 times in short succession. The battery voltage will be displayed
4. Press the arrow up / button until the service menu appears.
5. Use the (+) and (-) buttons to select menu option “Confirm“.
6. Press page up button until “Complete Service” is selected.
7. Confirm “Complete Service” with page up button . The display will show “Service Confirmed”.