2003 Mercedes C-Class Owner's Manual - Page 248

Operation Maintenance Calling up the service indicator Switch ignition on. The standard display of the control system appears ( page 116). Press button k or j on the multifunction steering wheel until the FSS indicator appears in the multifunction display. Resetting the service indicator In the event that the service on your vehicle is not carried out by an authorized Mercedes-Benz Center, you can reset the service indicator yourself. Switch ignition on. The standard display of the control system appears ( page 116). Press button k or j on the multifunction steering wheel until the FSS indicator appears in the multifunction display. Press the reset knob for about four seconds. This message appears in the tachometer: DO YOU WANT TO RESET SERVICE INTERVAL? CONFIRM BY PRESSING RESET (R) BUTTON The service indicator now displays the reset interval. i If the service indicator was inadvertently reset, have a Mercedes-Benz Center correct it. Only reset if the proper service has been performed. Resetting the system without performing proper service as called for by the FSS will cause the FSS to incorrectly determine the next service interval which will result in engine damage not covered by the Mercedes-Benz Limited Warranty. i If the battery is disconnected, the days of disconnection will not be included in the count shown by the service indicator. To arrive at the true service deadline, you will need to subtract these days from the days shown in the service indicator. Do not confuse the service indicator with the engine oil level indicator :. To confirm, hold down the reset knob until you hear a signal. 248