1.4 TSI engine (EA211) · Cooling · Cooling system/coolant

Draining and adding coolant

Special tools and workshop equipment required

Adapter for cooling system tester - V.A.G 1274/8-
Hose clamp pliers - VAS 6340-
Coolant system charge unit - VAS 6096-
Drip tray for workshop hoist - VAS 6208-
Refractometer - T10007 A-
Safety glasses
Safety gloves

Draining

Carefully open filler cap -1- on coolant expansion tank -2- in -direction of arrow-.

Remove noise insulation ⇒ General body repairs, exterior; Rep. gr. 66; Noise insulation.
Place drip tray for workshop hoist - VAS 6208- underneath.

Draining coolant from radiator:

Open spring-type clip -arrow- and pull coolant hose off.

Draining coolant from radiator for charge air cooling circuit:

Open spring-type clip -arrow-.
Pull coolant hose off water radiator for charge air cooling circuit.

Continued for all vehicles:

Filling

Note

The water used for mixing has a major influence on the effectiveness of the coolant. Because the water quality differs from country to country and even from region to region, the quality of the water to be used in the cooling system has been specified by Volkswagen. Distilled water fulfils all requirements. Therefore, only ever use distilled water when mixing coolant for topping up or renewing coolant.
Use only coolant additives which conform with the ⇒ Electronic parts catalogue (ETKA). Other coolant additives may reduce corrosion protection substantially. The resulting damage could lead to loss of coolant and subsequent severe damage to the motor.
Mixed in the proper proportions, coolant inhibits frost and corrosion damage as well as scaling. Such additives also raise the boiling point of the coolant. For this reason, the cooling system must be filled all-year-round with coolant additives.
Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates.
ONLY refractometer - T10007A- may be used for determining current anti-freeze value.
Frost protection must be guaranteed down to -25°C as a minimum and, in countries with arctic conditions, down to approx. -36°C. Increasing the frost protection is permissible only if climatic conditions require stronger frost protection. It may, however, be increased only to a maximum of -48°C. Otherwise, the cooling effect will be impaired.
Do not reduce the coolant concentration by adding water even in warmer seasons and in warmer countries. Frost protection must be guaranteed down to at least -25°C.
Read off anti-freeze figures for respective replenished coolant additives.
The temperature read off the refractometer - T10007A- corresponds the »ice flocculation point«. Flakes of ice may start forming in the coolant below this temperature.
Never reuse old coolant.
Use only a water/coolant additive mixture as a slip agent for coolant hoses.

Coolant mixture ratio

Frost protection to	Coolant additive concentration	Coolant additive ¹⁾	Distilled water ¹⁾
-25°C	40%	3.2 l	4.8 l
-36°C	50%	4.0 l	4.0 l

1) The quantity of coolant can vary depending on the vehicle equipment.

Coolant: ⇒ Electronic Parts Catalogue.

Connect coolant hose on bottom left to radiator.
Secure coolant hose with spring-type clip -arrow-.

Connect coolant hose to water radiator for charge air cooling circuit.
Secure coolant hose with spring-type clip -arrow-.

Fill spare container for cooling system charge unit - VAS 6096/1- of cooling system charge unit - VAS 6096- with at least 10 litres of pre-mixed coolant.
Make sure to use correct mixing ratio.
Screw adapter for cooling system tester - V.A.G 1274/8- onto coolant expansion tank -1-.
Install cooling system charge unit - VAS 6096- to adapter - V.A.G 1274/8-.
Feed vent hose -2- into a small container -3-.

Close valves -A- and -B- (turn lever transverse to direction of flow to do this).
Connect hose -4- to compressed air.

Pressure: 6 to 10 bar.

Open valve -B-; turn lever in direction of flow to do this.

The suction-jet pump reduces pressure in the cooling system to below atmospheric pressure.
The needle on the gauge should move into the green zone.

Also, open valve -A- briefly.
To do this, turn lever in direction of flow so that hose of spare container for cooling system charge unit - VAS 6096/1- is filled with coolant.
Close valve -A- again.
Leave valve -B- open for a further 2 minutes.

The suction-jet pump will continue generating a vacuum in the cooling system.
The needle on the gauge must remain in the green zone.

Close valve -B-.

The needle on the gauge must stay in the green zone.
The low pressure in the cooling system is then sufficient for subsequent filling.

Pull off compressed air hose.
Open valve -A-.

The vacuum in the cooling system draws coolant from the spare container for cooling system charge unit - VAS 6096/1-, thus filling the cooling system.

Remove cooling system charge unit - VAS 6096- from coolant expansion tank.

Fill coolant up to max. marking -arrow- on coolant expansion tank -1-.
Install noise insulation ⇒ General body repairs, exterior; Rep. gr. 66; Noise insulation.
On vehicles with auxiliary heater, switch on auxiliary heater for about 30 seconds.
Set temperature regulator to “HI”.
Switch off air conditioner compressor. To do this, press AC button.

LED in the button must not light up.

Start engine and run it for max. 2 min. at a speed of approx. 1,500 rpm.
Fill coolant up to the overflow hole of the coolant expansion tank while the engine is running.
Tighten cap of coolant expansion tank until it engages.
Run engine at idling speed until the coolant hoses on the radiator are heated up.
Switch off engine and let it cool off.

Check coolant level in coolant expansion tank -1-.

When the engine is cold, the coolant level must be between the min. and the max. markings.
When the engine is at operating temperature, it is permissible that the coolant level is at the "max." mark -arrow-.

Fill more coolant if necessary.