Passat Sedan L4-2.0L Turbo (BPY) (2007)
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Mark the coolant hoses - 1 - to prevent interchanging them.
CAUTION!
Contact with hot engine coolant can cause severe scalding.
Coolant temperature can be above 100 ? with a warm engine. The cooling system is under pressure.
If necessary, reduce pressure and temperature before repairs.
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Clamp off coolant hoses - 1 - using hose clamps up to dia. 40 mm (VAS 3093) and disconnect coolant hoses to heater core.
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Connect a section of hose - A - onto upper connection.
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Hold a container - B - under the lower connection - C -.
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Using a compressed air gun, carefully blow residual coolant out of heater core at heater core connection.