Work sequence

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Fig 1: Locating Coolant Hose Retaining Clip

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Install lower coolant hose and secure with retaining clamp - arrow -.

Fig 2: Locating Coolant Hoses At Oil Cooler

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Slide coolant hoses onto oil cooler unions - arrows - and secure with spring-type clamps.
Install center insulation tray: → 50 BODY, FRONT

Without using coolant system charging unit VAS 6096

Fig 3: Identifying Expansion Tank

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Fill coolant slowly up to top mark of hatched field on expansion tank.

Using coolant system charging unit VAS 6096

Screw adapter VAG 1274/8 onto expansion tank.
Fill coolant system using coolant system charging unit VAS 6096 : → Electrical Wiring Diagrams, Troubleshooting and Component Locations

With and without coolant system charging unit VAS 6096

Seal expansion tank.
Switch off heater and air conditioner.
Start engine and maintain an engine speed of about 2000 rpm for approx. 3 minutes.
Allow engine to run at idling speed until lower hose on radiator becomes hot.

Switch ignition off.

Fig 4: Identifying Expansion Tank

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Check coolant level and top up coolant if necessary: At normal engine operating temperature coolant level must reach top mark of hatched field. When engine is cold coolant level should be around middle of hatched field.