instrument cluster display on 2005 Mercedes-Benz ML350

On my instrument cluster in the mileage display it shows a wrench, the letter D, the number 4, and a minus sign. I know the one wrench means minor tune up but what does the number 4 and the minus sign mean?

by in Tustin, CA on February 05, 2011
2 answers
ANSWER by , February 05, 2011
Should be explained in the owner's manual. Check here or try this link you may be able to down load a free copy of the owner's manual for your vehicle
ANSWER by , February 06, 2011
I believe it means you are 4 days over on the scheduled maintenance. Zee