Change the water thermostat on Fiat 500

Start the tutorial with the engine cold.

Unscrew the battery clip bolt using the ratchet and 13 socket.

Unscrew and remove the terminals then remove the battery.

Unscrew the connector retaining screw and lock it upwards to free up space.

Place a basin under the gearbox to collect any coolant that may leak from the hoses and the water thermostat.

Using a large slotted screwdriver, pry up the original clamps to remove the water hoses.

Remove the probe connector by carefully removing the yellow clip.

Unscrew the two screws using the 1/4 ratchet, the extension and the 10 socket and remove the water thermostat.

Clean the surface with F gasoline and a cloth.

You can easily see where the water thermostat broke.

Installer the new water thermostat by tightening the two screws and lightly oiling the thermostat seal.

Reconnect the two water hoses and tighten the clamps using the 6 or 7 socket depending on your clamp. Cut off the excess from the clamp using pliers.

Reconnect the probe connector then carefully snap the yellow clip into place.

Reattach the connector using the screw, 1/4 ratchet, extension and 10 socket.

To put back the battery, tighten the fastener with the 13 socket and tighten the terminals with the 10 combination wrench.

Turn on the ignition

To start up

Let the car idle

Open the bleeder screw gradually using the large slotted screwdriver (you will hear air coming out of the circuit). Close the bleeder screw once you hear no more air coming out.

Top up coolant as the level drops.

Tip: To see the coolant level correctly, shine a portable light on the reservoir. Repeat the previous steps until the coolant level stabilizes and there is no more air.

Once the coolant level has stabilized and bleeding is complete at idle, fill the coolant reservoir to the "Max" mark.

When the temperature gauge is at half the maximum height, gradually accelerate in neutral to warm up the engine until the fan starts to circulate the coolant in the radiator.

You can be two to check that the level does not fall below the "Min" mark.

After letting the car rest, with the engine off to reduce the pressure in the cooling circuit, top up and repeat the operation until the coolant is between the "Min" and "Max".