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Why does the battery light stay on the 2000 Ford Focus after the battery has been replaced?
Wiki User
∙ 12y ago
Alternator may not be working to keep battery charged properly.
Check with a voltmeter
Reading should be (with a fully charged battery) around 12.8 volts without vehicle running
With vehicle running reading should be 13.8-14.2 volts
Ford Focus 2001 - My experience with battery light coming on is the following: Put a volt meter on the battery if you get about 12.7 volts DC (Car Cold) or about 14.5 volts DC with the car running, your alternator should be fine. What you want too check is the fuse. In the fuse panel under the hood is a 10 amp fuse (red color) in position 10 (check your manual), if it is blown, that means your voltage monitor/regulator diagnostic module is suggesting it is not functioning. Replace the fuse should help. This also solved some stalling I had with the car, although I'm not sure why.
Wiki User
∙ 12y ago
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