Cooling System, Draining and Filling
Cooling System, Draining and Filling
Special tools, testers and auxiliary items required
• Refractometer (T10007)
• Drip tray (V.A.G 1306) or drip tray for workshop crane (VAS 6208)
• Spring-type clip pliers (VAS 5024 A)
• Cooling system charge unit (VAS 6096)
• Adapter (V.A.G 1274/8)
Draining
• Drained coolant must be stored in a clean container for disposal or reuse.
• Follow disposal regulations.
CAUTION!
Hot steam may escape when opening expansion tank. Wear protective goggles and protective clothing to prevent damage to eyes and scalding. Cover the cap with a rag and open very carefully.
- Open cap of coolant expansion tank.
- Remove noise insulation
- Place Drip tray (V.A.G 1306) or drip tray for workshop crane (VAS 6208) underneath.
- Open spring clamp - arrow - and disconnect coolant hose.
If quick acting coupling at lower radiator connection is pulled off, a large amount of coolant flows on to the bumper.
Filling
CAUTION!
Only use tap water for mixing. Well water does not have the quality necessary to ensure proper coolant function.
• On vehicles from model year 2008, only coolant additive G 12 plus-plus conforming to TL VW 774 G may be used.
• On vehicles through model year 2007, coolant additive G 12 plus conforming to TL VW 774 F and G 12 plus-plus conforming to TL VW 774 G can be used.
• G 12 plus plus may be mixed with the previous coolant additive G12 plus. Both are colored purple.
• Coolant additives marked with "Conforms to TL VW 774 G" or " Conforms to TL VW 774 F" prevent freezing and corrosion damage and scaling and they increase the boiling point. For this reason the system must be filled all year round with frost and corrosion protection additives.
• Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates.
• Freeze protection must be assured to about -25 °C (in arctic climatic countries to about -35 °C).
• 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%.
• If for climatic reasons a greater frost protection is required, the amount of coolant additive of can be increased, but only up to 60% (frost protection to about -40 °C), as otherwise frost protection is reduced again and cooling effectiveness is also reduced.
• The refractometer (T10007) is recommended for determining freeze protection density.
• If radiator, heat exchanger, cylinder head or cylinder head gasket is replaced, do not reuse old coolant.
Recommended mixture ratios:
1) The quantity of coolant can vary depending upon the vehicle equipment.
2) Only use clean tap water.
- Connect coolant hose onto connection and secure using spring-type clamp.
- Install noise insulation
Fill using cooling system filler unit (VAS 6096).
- Thread adapter (V.A.G 1274/8) on expansion tank.
- Fill coolant circuit using cooling system filling unit (VAS 6096) => Operating instructions for cooling system filler unit VAS 6096.
Filling without cooling system filler unit (VAS 6096)
- Slowly fill coolant up to top marking of hatched area - arrow - on expansion tank.
- Close expansion tank.
- Start engine and maintain an engine speed of about 2000 RPM for approximately 3 minutes.
- Let engine run until fan starts up.
- Turn off heater and air conditioning.
CAUTION!
Hot steam may escape when opening expansion tank. Wear protective goggles and protective clothing to prevent damage to eyes and scalding. Cover the cap with a rag and open very carefully.
- Check coolant level and top off as necessary.
• With engine at operating temperature, coolant level must lie at top marking of hatched area - arrow -.
• With engine cold, coolant level should be located approximately in the center of hatched area.