Electrical heating is used and the thermostat is integrated within the thermostat housing assembly, while its operation is supervised by the DME control module. If a faulty thermostat is believed to be the initiator of the problem, the DME control module should be scanned for fault codes which may have been stored, by using the suitable scan tool. First go ahead and flush the
Radiator and engine block, then you need to remove the air intake duct, cooling fan, and the fan shroud. Remove the electrical harness connector from it, remove the retaining clips of the hose fittings and remove the hose fittings from the thermostat housing. You should unbolt and take off the thermostat housing from the front of the engine, also the nut on the top of the engine lifting eye will have to be loosened for easier removal to be made. For installation reverse the removal process while all faces in contact with sealing gasket must be oil free and that a new sealing gasket must be provided. Last but not the least, add the coolant in the system.