3.2L - Cooling System - Engine Code(s): Bub & Cbra: Maintenance Volkswagen Eos I

DRAINING AND FILLING

Special tools and workshop equipment required

1. Refractometer -T10007
2. Adapter -V.A.G 1274/8
3. Drip Tray -V.A.G 1306
4. Torque Wrench (5-50 Nm) -V.A.G 1331
5. Spring Type Clip Pliers -VAS 5024 A
6. Cooling System Charge Unit -VAS 6096

Draining

Note. The drained coolant must be stored in a clean container for disposal or reuse. Follow disposal regulations.

Carefully open the coolant expansion tank cap.

Remove the noise insulation. Refer to Removal and Installation .

Disengage the quick acting coupling -arrow- and disconnect the coolant hose from the bottom of the radiator.

Scheme 31

Also, remove the lower coolant hose from the after-run coolant pump -V51- -arrow- and allow the remaining coolant to drain.

Scheme 32

Note. Observe disposal regulations for coolant!

Filling

Note. On vehicles from MY 2008, only coolant additive G 12 plus-plus conforming to TL VW 774 G may be used. On vehicles through MY 2007, coolant additive G 12 plus conforming to TL VW 774 F and G 12 plus-plus conforming to TL VW 774 G may be used. G 12 plus-plus may be mixed with the previous coolant additive G12 plus. Both are colored purple. Coolant additives bearing the statement "Conforms to TL VW 774 G" or "Conforms to TL VW 774 F" prevent damage from freezing and corrosion and lime deposits. They also increase the boiling point. The cooling system must be filled with coolant additive year-round. Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates. Freeze protection down to approximately -25 °C (-13 °F) must be guaranteed. Freeze protection down to approximately -35 °C (-31 °F) must be guaranteed in countries with cold climates. The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The coolant additive portion must be at least 40%. The amount of G12 plus-plus can be increased if more freeze protection is needed. However, it may only be increased up to 60%, which provides freeze protection down to approximately -40 °C (-40 °F). Otherwise the freeze protection and cooling effect are reduced. The refractometer -T10007- is recommended for determining freeze protection density. If the radiator, heater core, cylinder head or cylinder head gasket is replaced, do not reuse the old coolant.

Recommended Mixture Ratios

Procedure

Connect the coolant hose to the after-run coolant pump -V51- -arrow- again.

Slide the coolant hose onto the bottom radiator connection and secure.

Install the adapter -V.A.G 1274/8- onto the expansion tank.

Fill the coolant circuit using the cooling system charge unit VAS 6096. Refer to the operating instructions for cooling system filler unit -VAS 6096-.

Check the coolant level and fill if necessary. With engine at operating temperature, the coolant level must be at the top mark, with the engine cold, it must be in the center of the hatched area.

Scheme 33

Install the noise insulation. Refer to Removal and Installation .

Scheme 34

1. Expansion Tank
2. Non-Return Valve Pay attention to the installed position. The arrow on the check valve points in the direction of flow.
3. Non-Return Valve Integrated in the coolant hose, not visible from the outside.
4. Heater Core Replace the coolant after replacing.
5. Heater Coolant Shut-Off Valve -N279- Only on vehicles with optional equipment.
6. Coolant Thermostat Housing
7. Transmission Oil Cooler
8. Lower Coolant Hose
9. Upper Coolant Hose
10. Radiator
11. Oil Cooler For the engine oil.
12. After-Run Coolant Pump -V51
13. Cylinder Block
14. Coolant Pump
15. Cylinder Head
16. Auxiliary Heater Not available in the US/Canadian market.