Cayenne 955/957 Porsche's SUV up to 2011. Cayenne, Cayenne S, and Cayenne Turbo message forum.

Alternator/Battery?

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Old Oct 1, 2017 | 09:13 PM
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Alternator/Battery?

hey all! 2009 CTTS. Over the last 2 days, I had to get my Cayenne jumpstarted on 2 separate occasions. Car starts up fine. Made 2 small trips, approx. 3 to 5 miles round trip. Next time i tried to start, just a click. Used jumper cables to jumpstart.

Attached is my Durametric report. I just replaced the battery 2 years ago (25,000 miles ago) with a Duralast Gold H9-DLG.

Been watching my volts via my Passport radar detector, and they start low and after driving for a few minutes, they are usually above 13.1. I've read tons of articles, and to be honest, I get confused with electricity, current, amps, etc, etc.

Got it charging on my CTEK all night, so maybe that will help.

I assume that if the volts are creeping up while driving, then the alternator should be fine? And that the battery may be bad. It has a 5 year warranty, so I may just go through the whole process of removing the thing and taking to my local autozone. Any thoughts or things i could look for to narrow down the focus? Thanks!
 
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Old Oct 2, 2017 | 09:31 AM
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