How to replace the thermostat on a Volkswagen Golf VII 1.6 TDI

Let's see how to replace the thermostat on a Volkswagen Golf VII 1.6 TDI: we need to partially drain the cooling system, placing a container under the radiator, and open the cap on the expansion tank (to avoid creating a vacuum). It is not necessary to completely drain it, but only to reduce the level below the thermostat, which on the CRK engine like the one we see, is located at the bottom, on the left side of the engine, near the timing belt.

The engine compartment is very compact, so we will have to remove the air filter, disconnect some electrical connectors and any hoses that are in the way. The timing belt is very close: we must be careful not to lean tools on it or hit it: damaging it means risking engine failure.

The thermostat is an aluminum body from which two pipes depart; disconnect them, and remove the hex screws that hold it in place: note the orientation of the device and the position of the gasket.

Clean the seat and position the new thermostat that we will have found on Amazon with the code B08CZZ9K3B at the price of 21.72 euros, free delivery for Prime customers. Screw in the screws and insert the pipes.

Reconnect all the disassembled pieces, top up the coolant to the maximum level, start the engine at idle without closing the cap of the expansion tank, accelerate slightly to help circulation and release air, then top up to maintain the maximum level.

Close the cap when the level has stabilized.