It's not due for an emmisions test anytime in the near future but how long can it take for any codes to clear up? When it resets the ECU will those systems not in the ready state cause the CEL to go on? I have an OBDLink Scan Tool that I could use to clear any fault ccdes. Would that be useful or recommended?

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Gary

1992 300E, 2006 E350 and 2006 C230 Sport