A failing alternator will mean that your vehicle runs strictly on battery power, which will quickly deplete the battery until the engine dies. Shop Advance Auto Parts for OEM-quality alternators from brands like Carquest®, ACDelco®, and Bosch®, we'll even help you with diagnosis by testing your old alternator for free at your local store!
The alternator on your car's engine is what keeps the battery charged and provides power to the electrical system and ignition while the engine's running. Without a properly functioning alternator, your engine would run strictly on battery power which would deplete the battery within a few minutes. Signs of a failing alternator can include a battery that's quickly exhausted, dim or flickering headlights, difficulty in starting, or an illuminated warning light. It's easy to diagnose a failing alternator - we can test it for you at your local store!