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To fix the "Check Charging System" light on a 2004 Ford Taurus, first, inspect the battery and alternator connections for corrosion or looseness. Test the battery voltage; it should be around 12.6 volts when the engine is off and 13.7 to 14.7 volts when running. If the battery and connections are good but the light persists, the alternator may be faulty and should be tested or replaced. Lastly, check the serpentine belt for wear, as a slipping belt can also trigger the warning light.

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2mo ago

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