2021 Mercedes-Benz AMG GT Engine Thermostat Warranty

Mercedes-Benz USA has announced an important warranty extension for the engine thermostat on certain vehicles, including the 2021 Mercedes-Benz AMG GT. This extension is part of their commitment to ensuring the proper performance of their products and enhancing customer satisfaction. Owners of affected vehicles should be aware of this extended coverage and the conditions under which repairs will be performed.

Why This Warranty Extension Matters

On certain Model Year 2019-2023 C, E, G, GLC, GLE, GLS, GT, S, and SL-Class vehicles equipped with an eight-cylinder engine, a specific issue has been identified. The sealing ring within the engine thermostat could detach. This detachment can lead to a delay in the proper heating of the engine coolant, which is crucial for optimal engine performance and emissions control.

A significant symptom of this issue is the illumination of the "check engine Malfunction Indicator Lamp ('MIL')". This warning light indicates that there is a problem with the vehicle's engine or emissions system that requires attention. Addressing this issue promptly helps maintain the vehicle's long-term reliability and compliance with emissions standards.

Extended Warranty Coverage Details

Mercedes-Benz USA is extending the coverage for the engine thermostat, which includes a necessary software update, beyond the original New Vehicle Limited Warranty. The new coverage period is now 15 years or 150,000 miles, whichever occurs first, from the vehicle's original warranty start date. This extended warranty applies to the vehicle regardless of ownership, providing long-term peace of mind for current and future owners.

This extended warranty specifically covers the engine thermostat and its associated software update. It is important to note that this extension does not apply to any other components or conditions beyond those explicitly mentioned. All other standard warranty terms and exclusions, as detailed in the Service and Warranty Information booklet, remain in effect.

Symptoms of an Engine Thermostat Issue

The primary symptom owners might notice is the illumination of the "check engine Malfunction Indicator Lamp ('MIL')" on their dashboard. This light serves as a critical warning that something is amiss with the engine system. Additionally, a delay in the heating of the engine coolant might occur, though this may not always be immediately apparent to the driver.

If you observe the "check engine Malfunction Indicator Lamp ('MIL')" or suspect any issues related to engine temperature regulation, it is advisable to have your vehicle inspected. Early diagnosis can prevent potential long-term issues and ensure your vehicle operates as intended.

Getting Your Vehicle Repaired Under Warranty

Any repairs covered by this warranty extension must be performed by an authorized Mercedes-Benz dealership. If your preferred dealership diagnoses and confirms that your vehicle exhibits the engine thermostat issue, the repair will be covered at no cost to you. This includes both the replacement of the engine thermostat and any required software updates.

Owners should schedule an appointment with their authorized Mercedes-Benz service center to have their vehicle inspected. The dealership technicians are equipped with the specialized knowledge and tools necessary to accurately diagnose and resolve the issue according to Mercedes-Benz standards.

Reimbursement for Previous Repairs

If you have already paid for a repair to the engine thermostat, including a software update, that resulted from a "check engine Malfunction Indicator Lamp ('MIL')" activation, you may be eligible for reimbursement. This applies if your vehicle had already exceeded its original warranty's mileage or time period when the repair was performed.

To request reimbursement, you will need to present specific documentation to your servicing or closest Mercedes-Benz dealership. This documentation includes:

• Original or clear copies of all receipts, invoices, and/or repair orders.
• The name and address of the person who paid for the repair.
• The Vehicle Identification Number (VIN) of the repaired vehicle.
• A clear description of the problem that occurred, the repair performed, when it was done, and by whom.
• Confirmation that only Mercedes-Benz replacement parts were used for the repair.
• Any available Fault Code (DTCs) information related to this warranty extension.
• The total cost of the repair expense being claimed.
• Proof of payment for the repair, such as a copy of a cancelled check or credit card receipt.

Reimbursement will be paid by a check from your authorized Mercedes-Benz dealership, which may take up to 60 days to process. It is important to note that reimbursement may be limited to the amount the repair would have cost if completed by an authorized Mercedes-Benz dealership. Repairs performed by non-Mercedes-Benz dealerships might not be reimbursed.

Important Warnings and Exclusions

Owners should be aware that this extended warranty is specific to the engine thermostat and its related software update for the conditions described. It does not cover other components or unrelated conditions. Standard warranty terms, including exclusions regarding extra expenses, as outlined in the Service and Warranty Information booklet, continue to apply.

If you have any questions or require further information regarding this warranty extension, you are encouraged to contact your authorized Mercedes-Benz dealership. You can also visit www.mbusa.com to locate the nearest dealership or contact Mercedes-Benz USA directly at 1-800-367-6372 if your dealership is unable to resolve your situation.

NHTSA ID: 11015052