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BMW
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2012
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335i 2D Convertible, Automatic Trans
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Repair and Diagnosis
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Engine Performance
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System
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Self Diagnosis - N55 - Diagnostic Trouble Codes - DTC P0478 (BMW DTC 138101) Through DTC P0440 (BMW DTC 191D01)
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DTC P303F; BMW DTC 138301: Radiator shutter, top, overtemperature, actuator: limit value exceeded
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Action in service
Action in service
If the fault has occurred one time only, clear the ECU fault memory. No further action necessary.
If the fault appears repeatedly, replace the radiator vent slat assembly.