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How to Replace the Thermostat in a Citroen C3?

Model: Citroen C3 SX, SY - Years: 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
Part: Thermostat

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Video tutorial

Before starting the thermostat replacement, check the coolant level with the engine completely cold, the air conditioning temperature, and how quickly both the radiator and the radiator hose heat up. This is to make a more accurate diagnosis and ensure that the thermostat is the component to replace.

If you are sure, locate the thermostat and disconnect the hose after placing a container to catch the fluid and properly protect the various components in the engine bay. Drain some of the coolant and then proceed to remove the thermostat by disconnecting the connectors, hoses, and unscrewing the bolts; then replace the gasket and install the new thermostat.


Posted on 17 October 2026 by ScegliAuto


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