Alternator and starter

Your alternator and starter are two of the most fundamental electrical components in your entire vehicle and when either one fails the result is immediate and unavoidable — your vehicle either will not start or it will not stay running. The starter motor is what engages the engine every single time you turn the key or press the start button. It draws a large burst of electrical current from the battery to spin the engine over and initiate the combustion process. The alternator takes over once the engine is running keeping the battery fully charged and providing electrical power to every system in the vehicle from the headlights and ignition system to the infotainment and safety electronics. Without a functioning alternator your battery will drain completely even while the engine is running and the vehicle will eventually shut down entirely.

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One of the most common and costly mistakes drivers make is replacing the battery when the real problem is actually a failing alternator or a weak starter. A new battery will not fix a charging system that is not maintaining proper voltage and it will not fix a starter that is drawing too much current. Brett's team at Zoom Tech tests before recommending any replacement. We use professional diagnostic equipment to measure alternator output voltage and current starter draw and overall charging system health to confirm exactly which component has actually failed before recommending any parts. That approach saves you money and makes sure the repair we perform actually solves the problem.