Warranty extension EW - Engine Coolant

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

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).

The document

• NHTSA's copy of the document (PDF)
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The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Trouble codes named

P0128

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