Battery drains when car not running

Asked by GuruS4DT2 May 07, 2019 at 05:58 PM about the 2004 Ford Taurus

Question type: Maintenance & Repair

What would make battery drain after key is off  
2004 Ford Taurus sel

1 Answer


Most likely a bad battery..easy to check go buy a cheap digital multimeter at Wal-Mart etc n test your battery..battery should be at 12 volts n running should be 12-14 volts w heat/ac,lights etc on if running it's below that then your ALTERNATOR isn't charging your battery n I would start have a drain on your system somewhere n it's usually ALWAYS battery or alternator that's what controls voltage in your car.

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