Question about 2000 Volvo S70

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Battery Light is On

I know this means the charging system is not working and the car could suddenly die at anytime. I checked the voltage at the battery and it's 12.5. With the car running it's 10.3.
What part of the charcging system typically breaks? Is there a regulator that I can replace or is it built in the alternator?
I have a 2000 S70 SE with 130k miles.

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The alternator is not charging the battery. Could be alternator, voltage regulator (which is usually in the alternator) , dirty/loose connections. First I would inspect all relevant electrical connections, clean & tighten. If no change -- replace alternator.

But be sure to fully charge the battery before you run the new alternator (follow alternator installation instructions).

Posted on May 13, 2009

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