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2004
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Cayenne Base
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Transmission
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Transmission Control Systems
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TIPTRONIC -- Diagnostics
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Fault code 0641
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ATF temperature
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Possible causes of fault
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Possible causes of fault
'Above upper limit', fault displayed in instrument cluster. Coolant shut-off valve faulty or does not switch. Cooler blocked, torque converter or transmission mechanical fault. Tiptronic control unit faulty.