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      05-09-2012, 08:23 PM   #4
Tom K.
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Drives: '07 328iT, '13 Boxster
Join Date: Mar 2008
Location: Maryland

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Quote:
Originally Posted by mrogo44 View Post
The other day when I stopped driving, I turned off my engine and left the keys in with the music on for about 1-2 minutes. After 2 minutes, the service light with the yellow battery showed up. I took the keys out, and attempted to start the car and it did not lag or sound any different than usual. This happens pretty much every time I do anything in the car with the keys still in. This week I took the car to a nearby shop to get the battery tested, and it showed it was charging, and recharging fine. What could be the issue here?

Thank you!
The first time that happened to my '07 E91, the alternator and IBS unit were replaced. When the problem resurfaced 6 months later, it turned out to be a bad wire shorting to ground.

As I understand it, there is a service bulletin on the shorting problem so you might want to take it to a dealer.

Tom
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