Coolant thermostat, removing and installing

WARNING: This page is about a different car, the 2008 Audi RS 4 and 2007 Audi RS 4. However, it is still accessible from the selected car via links, so may be relevant.

Removing

Drain coolant → Cooling system, draining and filling .

Fig 1: Identifying Coolant Hose, Bolts & Coolant Thermostat Housing

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove coolant hose - 2 - at bottom of coolant thermostat housing and let rest of coolant drain.
Remove bolts - arrows -.
Remove coolant thermostat housing and remove coolant hose - 1 - at top of coolant thermostat housing.

Fig 2: Identifying Bolts, Coolant Thermostat & Housing

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolts - arrows -.
Remove coolant thermostat - 2 - from housing - 1 -.

Installing

Installation is in reverse order of removal, note the following:

NOTE:

Replace seals and O-rings.
Secure all hose connections using hose clamps appropriate for the model type .

Fill with coolant Filling .

Torque specifications

Component	Nm
Coolant thermostat to thermostat housing	4.5
Coolant regulator housing to coolant pump housing	9