A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
Thermostat: Testing and Inspection
MAP Controlled Thermostat, Checking
Special tools, testers and auxiliary items required
‹› Connector test set (V.A.G 1594C)
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Remove Map Controlled Engine Cooling Thermostat ( F265). Refer to => [ MAP Controlled Thermostat ] See: Service and Repair.
‹› How to drain coolant. Refer to => [ Cooling System, Draining and Filling ] See: Service and Repair/Procedures.
‹› Always replace gaskets and seals.
‹› How to fill coolant. Refer to => [ Cooling System, Draining and Filling ] See: Service and Repair/Procedures.
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Check thermostat when cold: Large valve plat must seal all around against connection flange.
If this is not the case:
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Replace Map Controlled Engine Cooling Thermostat (F265).
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Connect contacts on Map Controlled Engine Cooling Thermostat (F265) to battery with adapter leads from Connector Set (V.A.G 1594C).
Carefully insert it perpendicular to flange in a pot with hot coolant (mixture ratio: 50% G12+) using pliers.
CAUTION!
Metal parts of thermostat must not be touched because they get hot. Risk of burning!
The heating element also warms the wax in thermostat.