To reset the 2000 Mercedes CL maintenance light, please follow these instructions:
1. Turn the ignition to position 1 (one position before starting the engine).
2. Press button (UP arrow) or (DOWN arrow) on the multifunction steering wheel until the FSS indicator with (Single Wrench) or (Double Wrench) and the service deadline appears in the multifunction display.
3. Press the reset button R in the instrument cluster for about 4 seconds. This message appears in the multifunction display “SERVICE INTERVAL? RESET WITH R BUTTON”
4. To confirm hold down the reset button until you hear a signal. The service indicator now displays the reset interval.
5. Turn the ignition off and then start the engine to verify the indicator has been reset.