How do you reset merc 210 E230 after service?

To reset the service indicator on a Mercedes-Benz E230 (W210), turn the ignition key to position "2" without starting the engine. Press the gas pedal three times within 10 seconds. Afterward, switch the ignition off and then back on to ensure the service light has been reset. If the procedure is successful, the service indicator should no longer be illuminated.