EW - Engine Coolant

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2015-2017 Mercedes-Benz S-Class (222 and 217 platforms) vehicles, an erroneous activation of the Malfunction Indicator Lamp (“MIL”) may occur under certain conditions, due to engine coolant backflow. In our continuing efforts to assure the proper performance of Mercedes-Benz products and to ensure the satisfaction of our customers, the warranty for the subject vehicles is extended from the original 4 years/50,000 miles to 10 years / 120,000 miles from the vehicle’s New Vehicle Limited Warranty start date for the coolant system when repairs are required that result from a MIL due to engine coolant backflow. Under this extended warranty, the subject vehicles will be retrofitted with an engine coolant system check-valve. The extended warranty is applicable to the following vehicles: In the event of an illuminated MIL as a result of the conditions specified above, the following fault codes will be present: ECU Fault Code: P012800 Subsequently, the following damage code will be used: 5030F22 Please check the VIN in NetStar/VMI before scheduling the appointment for the repair. Applicable vehicles will be visible in NetStar/VMI on February 14, 2020. Approximately one week after the distribution of this NCU, a letter will be sent to owners of certain vehicles informing them that the warranty for the subject vehicles with a MIL resulting from engine coolant backflow will be extended from the original 4 years/50,000 miles to 10 years/120,000 miles. If customers have already paid to have a repair to address the MIL related to the conditions specified above, they may be eligible for reimbursement. Please advise the customer to follow the instructions detailed below (also included in a copy of the customer letter).