But it also might need reprogramming if you don’t use a battery memory saver. Your car will relearn some of that info over time. When you take out the battery, you might lose that info. Today’s cars use computers that control the engine, brakes, airbags, and infotainment systems.Įach computer stores info about your car’s performance and your driving details in the VRAM (Volatile Random Access Memory). Insert the OBD2 connector into your OBD port and connect the battery clamps to a battery in another vehicle or even a smaller 12V battery (like maybe a home alarm system). It also keeps your car’s computers running with the correct data it needs to run its systems.
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