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Join Date: Dec 2011
Location: River man
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No start

I have a 2011 Porsche 997 Speedster with 15K on it and it will not start. It' acts like a dead battery.
Its a new to me as having purchased it in December.
I have had the car stored from Jan. until July on a Ctek battery maintainer. In July I took her out for a 3 hr. drive with a number of stops along the way. 3 weeks ago drove it about 8 miles to a new home and put it on the battery maintainer.
Today I wanted to start her and I get nothing out of the battery, not even a click typical of a dead battery or near dead battery. Lights come on in the trunk, daytime running lights are nice and bright and the interior lights appear bright and not dim as you would expect in a near dead battery.
With the maintainer would the battery die completely?
Do I need a new battery or is there a switch or something needs to be reset

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Last edited by bcgreen; 08-25-2022 at 02:37 PM..
Old 08-25-2022, 02:24 PM
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BCGreen, not saying you did this, but my buddy put his charger on backwards and it killed the battery. It's also possible that a fuse blew in the battery tender. Now is the perfect time to get a voltmeter if you don't have one already and check both that the battery and battery tender is working. First check the battery not connected to the charger. It should be above 12V. If below, then there is a charging issue/possible bad battery. If the battery is showing above 12V, connect the charger and keep your eye on the meter. If it is working, the voltage should start slowly rising. If everything looks OK and the car won't start, then someone else is going to have to chime in on fault elsewhere, like the starter.
Old 08-25-2022, 02:57 PM
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Quote:
Originally Posted by Str8Razr View Post
BCGreen, not saying you did this, but my buddy put his charger on backwards and it killed the battery. It's also possible that a fuse blew in the battery tender. Now is the perfect time to get a voltmeter if you don't have one already and check both that the battery and battery tender is working. First check the battery not connected to the charger. It should be above 12V. If below, then there is a charging issue/possible bad battery. If the battery is showing above 12V, connect the charger and keep your eye on the meter. If it is working, the voltage should start slowly rising. If everything looks OK and the car won't start, then someone else is going to have to chime in on fault elsewhere, like the starter.
The battery tender was showing charging, it would alternate between charging and charged - amber light to green light.
Just checked with the voltmeter and it show something between 12.5 to 12.9Volt
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66 Shelby Hertz Renta-Racer
68 Shelby 500KR
78 Ferrrari 308
16 Macan S
11 Speedster

Last edited by bcgreen; 08-25-2022 at 03:12 PM..
Old 08-25-2022, 03:08 PM
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Issue solved - key fob.
​​​​​​​Tried the other key and it worked just fine.
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66 Shelby Hertz Renta-Racer
68 Shelby 500KR
78 Ferrrari 308
16 Macan S
11 Speedster
Old 08-25-2022, 04:21 PM
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Ah, then only $400 to reprogram the key fob!
Old 08-25-2022, 07:10 PM
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Just needs a new battery
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66 Shelby Hertz Renta-Racer
68 Shelby 500KR
78 Ferrrari 308
16 Macan S
11 Speedster
Old 08-25-2022, 07:30 PM
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Put in a new battery in the key fob and that didn't help.
I am wondering if the battery needs to be from the same maker. I bought the correct battery but it is from Energizer instead of Sony. The key with the Sony battery works just fine but the key with the Energizer does not.

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66 Shelby Hertz Renta-Racer
68 Shelby 500KR
78 Ferrrari 308
16 Macan S
11 Speedster

Last edited by bcgreen; 08-26-2022 at 05:37 PM..
Old 08-26-2022, 05:25 PM
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