Thermostat Housing - 3.5L GTDI: Removal

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Drain the cooling system. For additional information, refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING .
Remove the Air Cleaner (ACL) outlet pipe, the ACL outlet pipe-to-LH turbocharger pipe and the LH turbocharger-to-Charge Air Cooler (CAC) pipe. For additional information, refer to INTAKE AIR DISTRIBUTION AND FILTERING .
NOTE: Cover the accessory drive belts to prevent coolant contamination of the belts.

Completely cover the accessory drive belts with waterproof plastic.
NOTE: Install the oil fill cap to prevent debris from falling into the engine.

Remove the oil fill cap and the engine appearance cover.
- Install the oil fill cap.
If equipped, disconnect the block heater electrical connector.
Remove the bolt and the LH turbocharger-to CAC tube bracket.
Release the clamp and disconnect the degas bottle-to-thermostat housing hose from the thermostat housing.
Release the clamp and disconnect the lower radiator hose from the thermostat housing.
Release the clamp and disconnect the heater outlet hose from the thermostat housing.
Release the clamp and disconnect the upper radiator hose from the thermostat housing.
Remove the 4 thermostat housing bolts.
NOTE: Do not allow the coolant inlet pipe to come out of the coolant crossover manifold assembly or the coolant inlet pipe O-ring seal may be damaged.

NOTE: Use the ear on the top of the coolant inlet pipe to prevent the coolant pipe from coming out of the coolant crossover manifold assembly.

Remove the thermostat housing.
Remove and discard the gasket and the O-ring seal.