Installing the temperature sensor

Clean the thermostat housing mating surfaces. Ensure that there is no dirt left in the thermostat housing.

Install 

• the new sensor. Use a new gasket  . Tighten to 20 Nm  . Ensure that the sensor cable is correctly routed in the thermostat housing and in the cable duct
• the thermostat housing using a new gasket. Tighten to 17 Nm 
• the screw for the cable duct. Tighten to 10 Nm 
• the variable valve timing solenoids. Tighten to 10 Nm 
• the front timing belt cover. Applies only to B6xx4T engines  . For cars with chassis numbers 203779-  , see Installing the front timing cover . The mudguard over the right drive shaft boot may come loose. If this happens, secure it from underneath
• the screw for the front timing belt cover. Tighten to 12 Nm 
• the servo reservoir. Check that the hoses are correctly positioned
• the upper timing belt cover.

Applies only to B6xx4T 

Install the plastic hoses between the turbocharger (TC) and the charge air cooler and between the air cleaner (ACL) and the turbocharger (TC).

Install the crankcase ventilation pipe on the intake manifold.

Tighten all hose clamps.

Install 

• the engine stabilizer brace. Tighten to 50 Nm 
• the torque rod on the bracket on the engine. Tighten to 80 Nm 
• the clamp holding the return hose for the power steering.