Fitment: 2002-2009 Audi A4 2002-2009 Audi A4 Quattro Key Signs of a Damaged Cooling Fan Assembly: Engine Overheating: The engine temperature rises while idling or in stop-and-go traffic but cools down at highway speeds. Fan Not Activating: The fan does not turn on even when the engine is hot or the air conditioning is turned on. Unusual Noises: Rattling, grinding, or loud, unnatural whirring noises from the fan area indicate bad bearings or broken/bent blades. Physical Damage: Visually inspect for missing/broken fan blades, loose wires, or debris obstructing the blades. Electrical Issues: A blown fuse, damaged relay, or damaged wiring harness. .
