Audi Workshop Service and Repair Manuals

Special tools,
testers and auxiliary items required

• ◆ V.A.G 1274/1 (for vehicles with small filler cap)
• ◆ V.A.G 1274/8 (for vehicles with large filler cap)
• ◆ V.A.G 1274/10
• ◆ V.A.G 1306
• ◆ V.A.G 1921
• ◆ Special tool T10007 (for coolant additive G 012 A8 D)

Draining

Note:

Catch drained off coolant in a clean container for re use or disposal.

• ‒ Open the cover of the coolant expansion tank
• ‒ → Release quick release fasteners -A- and -B- and take off front noise insulation.

• ‒ Place drip tray V.A.G 1306 below engine.
• ‒ → Pull off bottom coolant hose retaining clip -arrow- and remove coolant hose from radiator.

Note:

→ When bumper is removed from vehicle, coolant can also be drained from radiator via drain screw -arrow-.

• ‒ → Remove bolts -arrows-, detach connection, O-ring and thermostat and drain remaining coolant.

Filling

Notes:

• ◆ The cooling system is filled all year round with a mixture of water and antifreeze/corrosion protection agent.
• ◆ Coolant additive G 011 A8 C (green) is used in vehicles up to 06.96.
• ◆ Only coolant additive G 012 A8 D (red) is used in vehicles from 07.96 onwards.

• ◆ If the fluid in the expansion tank is brown, this means G 012 A8 D has been mixed with another type of coolant. In this case, flush out the cooling system and fill with fresh coolant. To flush the system, fill it with clean water and run the engine for about 2 minutes. This should remove as much of the old coolant as possible.

• ◆ G 011 A8 C and G 012 A8 D (and coolant additives marked "meeting specification TL VW 774 C" or "meeting specification TL VW 774 D") prevent frost and corrosion damage, stop scaling and at the same time raise the boiling point of the coolant. For these reasons the cooling system must be filled all year round with the correct anti freeze and anti corrosion additive.
• ◆ Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates.
• ◆ Protection against frost 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 anti freeze ratio must be at least 40 %.
• ◆ If greater frost protection is required in very cold climates, the amount of G 012 A8 D can be increased, but only up to 60 % (this gives frost protection to about -40 °C), as otherwise frost protection is reduced again and cooling effectiveness is also reduced.
• ◆ If radiator, heat exchanger, cylinder head or cylinder head gasket is replaced, do not reuse old coolant.

• ◆ → Use special tool T10007 to check frost protection of coolant additive G012 A8 D in cooling system.

Recommended mixture ratios:

    1)    Coolant quantity: 6.0 litres (may vary depending upon the vehicle equipment).

• ‒ Clean and smooth down sealing surface for O-ring as required.
• ‒ Install thermostat, new O-ring and connection.
• ‒ Install lower coolant hose and secure.

Vehicles with small filler cap:

• ‒ → Screw adapter V.A.G 1274/1 onto coolant expansion tank.
• ‒ Fit special tool V.A.G 1274/10 onto adapter.

Vehicles with large filler cap:

• ‒ → Screw adapter V.A.G 1274/8 onto coolant expansion tank.
• ‒ Fit special tool V.A.G 1274/10 onto adapter.

All models:

Note:

To fill expansion tank without special tools, detach expansion tank and raise it about 100 mm.

• ‒ Push back bellows on connection of heater heat exchanger in plenum chamber.
• ‒ → Release coolant hose going to heat exchanger and pull back the hose until the bleeder hole in the hose -arrow- is no longer covered by the connection.
• ‒ Top up coolant until it flows out at the bleeder hole in coolant hose.
• ‒ Push coolant hose on connection and secure.
• ‒ Fit expansion tank cap.

• ‒ Start engine and maintain an engine speed of about 2000 rpm for approx. 3 minutes.
• ‒ Then allow engine to run at idling speed until the lower hose on radiator becomes hot.
• ‒ Check coolant level and top up if necessary. If the engine is warm, coolant level must be at max. mark; if cold, between min. and max. marks.

• ‒ Stop engine.

Tightening torque