Battery warning light stays on or comes on while driving
Headlights dim, flicker, or get brighter and dimmer
Electrical accessories work poorly or shut off
Battery keeps dying even after being charged or replaced
Engine struggles to start or needs frequent jump-starts
Strange whining, grinding, or squealing noise from the alternator area
Burning smell from overheating wires or belt
Dashboard lights flicker or behave erratically
Power windows, radio, or AC act weak or inconsistent
Vehicle stalls after the battery loses charge
Multimeter shows low charging voltage
Alternator belt is loose, worn, or broken
Corroded or damaged alternator wiring or connections