SEAT Workshop Service and Repair Manuals

Draining and filling cooling system t  Empty → Anchor t  Filling → Anchor Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Measuring tool -T10007-, see equivalent → Anchor

t	Tray -T20173-, see equivalent → Anchor

t	Pliers -T20174- or pliers -SAT 1105-, see equivalent → Anchor

t	Adapter -VAG 1274/8-, see equivalent → Anchor

t	Coolant charger -VAS 6096-, see equivalent → Anchor

Draining –  Open cap on coolant expansion tank.   WARNING Steam may be released when opening the expansion tank. Cover the cap with a cloth and open carefully.

–  Release the fasteners -arrows- to remove the central soundproofing panel. –  Place the drip tray -T20173- under the engine. –  Drain the coolant by loosening the spring flange on the lower sleeve of the radiator.

–  To drain coolant from engine also remove coolant hose from oil cooler -arrow-.   Note Please observe requirements for disposal. Filling   Note t  With the range of models later than 2008, only Gº12º plus-plus anti-freeze agent must be used according to standard TL VWº774ºG. t  The range of models up to and including 2007 can use Gº12º plus anti-freeze agent, according to TLºVWº774ºF and Gº12º plus-plus, according to TLºVWº774ºG. t  G 12 plus-plus can be mixed with G 12 plus antifreeze agent. Both agents are coloured mauve. t  „TLºVWº774ºG“ or „TLºVWº774ºF“ anti-freeze agents prevent damage from rust, freezing or lime sediment, and also raise the boiling point of the coolant. Therefore, the cooling system must be filled all year round with coolant additive and corrosion protection additive. t  Thanks to this rise in the boiling point, the coolant guarantees good running, even when the engine undergoes heavy strain, especially in countries with tropical climates. t  The antifreeze protection must be guaranteed to approx. - 25 ºC (down to approx. -35 ℃ in countries with arctic climate). t  The concentration of the coolant must not be reduced by adding water in summer or in countries with hot climates. The amount of anti-freeze in the coolant must be at least 40 %. t  If the climate requires a stronger anti-freeze, the anti-freeze agent can be increased, but only up to 60% (anti-freeze protection down to approx. -40ºC). If the proportion is greater, the cooling and anti-freeze protection capacity is reduced. t  The refractometer -T10007- is recommended for determining the current anti-freeze density. t  If radiator, heat exchanger, cylinder head or cylinder head gasket has been replaced, do not reuse old coolant. Recommended mixture ratios:

Anti-freeze protection up to	Anti-freeze proportion	G 12 plus1) G 12 plus plus1)	Water 1)
-25 ℃  -35 ℃	40 % 50 %	3.2 l  4.0 l	4.8 l  4.0 l

1) The quantity of coolant can vary depending upon the vehicle specifications. –  Tighten the spring flange on the lower sleeve arrow of the radiator.

–  Connect the cooling liquid hoses to the oil cooler -arrow-.

–  Fill coolant reservoir -VAS 6096/1- with at least 8 l premixed coolant of the right mixture ratio –  Screw on adaptor -VAG 1274/8- to the coolant expansion tank. –  Fit the cooling system charge unit coolant charger -VAS 6096- onto the adapter -VAG 1274/8-. –  Run vent hose -1- into a small container -2-. As well as air, a small quantity of coolant will be expelled and must be collected. –  Close both valves -A and B-. To do this turn the lever at right angles to direction of flow. –  Connect hose -3- to compressed air. l  Pressure: 6 ... 10 bar of pressure.

–  Open valve -B-. To do this turn lever to direction of flow. The suction jet pump creates a vacuum in the cooling system. l  The display instrument needle must move to the green area –  Additionally, open briefly the valve -A-. To do this turn lever to direction of flow so that thecoolant reservoir -VAS 6096/1- hose can be filled with coolant. –  Close valve -A- again. –  Leave valve -B- open for another 2 minutes. l  The suction jet pump creates further vacuum in the cooling system l  The display instrument needle must remain in the green area –  Close valve -B-. l  The needle on the gauge should stop in the green zone. The vacuum level in the cooling system is then sufficient for subsequent filling. If the needle does not reach the green zone, repeat the process. If the vacuum drops the cooling system is leaking. –  Pull out pressure hose. –  Open valve -A-. The vacuum in the cooling system causes the coolant to be drawn out of the cooling system charge unit -VAS 6096/1-; the cooling system is then filled.

–  Check coolant level and fill coolant up to max. mark. –  Start engine and run at 1500 rpm for max. 2 minutes and at the same time fill with coolant up to overflow hole on expansion tank. –  Screw on cap on coolant expansion tank. –  Run engine until radiator fan cuts-in.   WARNING Hot vapour/hot coolant may escape when opening expansion tank. Cover cap with cloth and open carefully. –  Check coolant level and top up any missing coolant, if necessary. If the engine is warm, coolant level must be at max. mark; if cold, between min. and max. marks.