Posted on 9/26/2025
Your vehicle relies on a steady supply of electrical power to keep everything running — from the ignition system to the headlights and onboard electronics. The alternator has a central role in this process by converting mechanical energy from the engine into electricity and keeping the battery charged. When the alternator stops charging, your car can only run on the remaining battery power, which won’t last long. Knowing the warning signs and potential consequences of a failing alternator can help you avoid being stranded and prevent damage to other components. The Alternator’s Role in Your Vehicle While the battery provides the initial power to start your engine, the alternator keeps everything running once the engine is on. It powers your vehicle’s electrical systems and replenishes the battery’s charge at the same time. When the alternator fails or stops charging, your battery takes over temporarily. Unfortunately, without the alter ... read more