MERCEDES BENZ SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOFTWARE CALIBRATION NUMBER (SCN) CODING; ENGINE CONTROL MODULE. THE VEHICLES FUEL TANK LEAK DIAGNOSIS SYSTEM MAY HAVE BEEN INADVERTENTLY DEACTIVATED DURING A VISIT TO THE WORKSHOP. THIS MAY CAUSE THE AFFECTED VEHICLES TO FAIL TO MEET THE STATUTORY REQUIREMENTS FOR INSPECTION AND OR MAINTENANCE (EMISSIONS INSPECTION). *PE