XENTRY (MERCEDES): CHECK ENGINE LIGHT (CEL) IS ACTIVATED; STORED IN ENGINE CONTROL UNIT IS VERY FINE LEAK. AUTOMATIC FUEL TANK LEAK TEST SOFTWARE IS SENSITIVE AND CAN PRODUCES AN ERRONEOUS DIAGNOSIS. MODELS 204, 212, 218, 221, 216,AND 166 WITH NO MODEL YEARS LISTED. *PE UPDATE 11/22/13. *PE
