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February 14, 2025 Other

On certain Model Year 2019

Mercedes-Benz technical service bulletin CL - Engine Thermostat for 2020-2021, 2023 Mercedes-Benz AMG E63, 2019-2022 Mercedes-Benz G 550 and 2020-2021 Mercedes-Benz AMG C63 and others.

Bulletin number
CL - Engine Thermostat
Component
Engine
Summary
On certain Model Year 2019 - 2023 C / E / G / GLC / GLE / GLS / GT/ S / SL - Class vehicles fitted with an eight-cylinder engine, the sealing ring in the engine thermostat could detach, causing a delay in the heating of the engine coolant. This may also cause the check engine Malfunction Indicator Lamp ('MIL') to illuminate.

Owners of these vehicles have filed 17 complaints in the engine category.

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