Reset Service Indicator

How do you reset the service indicator on a Mercedes? This may take a couple of trys. Make sure the doors are shut.
1) Turn key to position 2.
2) Press/release the R button to show the next service due light. Release button. 3) Turn key to Off. 4) Press and HOLD the same R button to view the service light, THEN, within 2 seconds, turn key to position 2. 5) Wait up to 10 second and the light will reset to show new service
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