The serpentine belt that turns the alternator is top of the list. Check The Serpentine Beltīefore testing your Cobalt’s battery, examine the basic things. The potential fixes are presented in a good way to check your car. The battery warning light tells the driver if there is an issue with the charging system.ĭirectly below are the common causes for the Chevy Cobalt battery warning light.The battery stores voltage for when the starter needs it or a sudden voltage demand increase.The voltage regulator produces a fixed output voltage, which keeps the system from overloading.The alternator charges the battery and powers your car.A serpentine belt turns the alternator.Here are the basics of how your Cobalt’s charging system works: The charging system in vehicles hasn’t changed that much in the last 50 years. That would indicate a bad battery, but it’s still worth your while to test it first.Ĭhevy Cobalt Battery Light Causes + Diagnosis You may have noticed your car struggling to start, and the battery light stays on after the start. Your Cobalt’s battery light can come on at any time while driving if the voltage drops below a certain threshold. Most battery lights will come on when a vehicle starts if the computer has detected that the voltage is too low to turn the starter at the proper RPM. Yes, Without Enough Voltage, the Engine Will DieĬlimate Control Failure, Weak Headlights, Random Misfiring, Red Battery Light (None at first) The battery light comes on because the voltage level at the battery is too low.įaulty Battery, Bad Alternator, Battery Cables, Battery Terminal Corrosion The charging system itself is relatively simple. If your Chevy Cobalt’s battery light is on, it is trying to warn you that there is an issue with the charging system.
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