INFINITI Q50 coolant leakage issue from new thermostat on INFINITI Q50

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some INFINITI Q50 owners report experiencing coolant leakage issues potentially related to a new thermostat, which can lead to overheating problems if the thermostat is faulty. These owners emphasize the importance of inspecting the entire coolant system, including hoses, connectors, radiator, and reservoir, to identify the source of the leak. Additionally, some recommend conducting a pressure test on the cooling system to detect any hidden leaks. They also suggest checking the condition of the engine oil, as coolant leaking into the engine may require further investigation and repairs. If the problem persists or if owners are uncertain about how to proceed, many advise seeking assistance from a certified mechanic or dealership experienced with INFINITI vehicles.

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