Changing the thermostat saxo 1.1

To change the thermostat on a Saxo 1.1, first, ensure the engine is cool and disconnect the battery. Remove the coolant hoses connected to the thermostat housing, then unbolt the housing to access the thermostat. Replace the old thermostat with a new one, ensuring the rubber seal is properly seated, and reassemble everything by reversing the steps. Finally, refill the coolant and check for leaks before starting the engine.