Coolant Thermostat

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 Volkswagen Jetta, 2009 Volkswagen Jetta, 2008 Volkswagen Jetta, 2007 Volkswagen Jetta, and 2006 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Check the coolant thermostat, refer to "Coolant Thermostat" in item: 17.

Special tools and workshop equipment required

Refractometer T10007
Drip Tray V.A.G 1306 or Drip Tray for VAS 6100 VAS 6208
Torque Wrench (5-50 Nm) V.A.G 1331
Spring Type Clip Pliers VAS 5024 A

Removing

WARNING:

Hot steam may escape when opening the expansion tank cap.

Wear protective goggles and protective clothing to prevent damage to eyes and scalding.
Cover the cap with a cloth and open very carefully.

-- Drain the coolant. Refer to DRAINING AND FILLING .

-- Remove the engine cover with air filter. Refer to ENGINE COVER WITH AIR FILTER .

-- Remove the intake manifold. Refer to INTAKE MANIFOLD .

-- Insert the guide tube for oil dipstick into the cylinder block again and secure it tightly so that no leaking coolant can run into the engine.

-- Place a suitable container under the coolant thermostat housing to catch any coolant leaking out.

-- Remove the bolts -arrows-, remove the cover -A- and remove the thermostat.

Fig 1: Identifying Bolts And Connection

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Installing

Installation is performed in the reverse order of removal. When doing this note the following:

Replace the seal and O-ring, refer to "Seal" in item: 18 and "O-ring" in item: 16.
Note the installed position of the thermostat -1-, the valve -2- must point upward.

Fig 2: Identifying Installation Position Of Coolant Regulator
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
Fill the coolant. Refer to DRAINING AND FILLING .

Tightening Specifications

Component		Nm
Cover to coolant thermostat housing		5