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After a cold winter in Michigan locked in an unheated garage and no trickle charger I came to my rightful punishment of a dead battery. I replaced it with a new one and now my 08' GT will turn over but won't start up. I am also getting a TPMS calibration error which I believe is unrelated and have fixed before after driving it a little. Any thoughts I where I should start trouble shooting?
 
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I would start by looking around under the hood and making sure a rodent didn't call your home for the winter...Look up under the plastic under the hood for rats nest making materials etc...Start there..Jason
 

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I would start by looking around under the hood and making sure a rodent didn't call your home for the winter...Look up under the plastic under the hood for rats nest making materials etc...Start there..Jason
Hi Jason,

I did the entire "clean up protocol" to make sure no new roommates had appeared, all clean. I did just get a call back from a mechanic saying it could possibly be a security feature that does not allow the car to start after a dead battery. "Reprogramming of the key should do the trick" I was told... I'm going to give it a go and see what happens. Still open to other ideas though!

Thanks
 
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It is possible...Do you have another key? They can get messed up if you let the battery run dead on one...Better to disconnect instead...Jason
 

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That’s a bummer... lucky you have an extra key as my GT only came with one.

I assume this is only an issue when the car is stored or it is off for many months at a time, not something to expect with a normal dead battery... right?
 

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That’s a bummer... lucky you have an extra key as my GT only came with one.

I assume this is only an issue when the car is stored or it is off for many months at a time, not something to expect with a normal dead battery... right?
I'm not 100% sure and hopefully won't find out anytime soon. This was the first time I had both the car stored for a long period of time and the battery die, lesson learned for sure!
 

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Hmm, this is odd. It would seem to imply that the entirely passive RFID chip in the key has somehow been forgotten by the ECU, while the other one has not. I personally (notwithstanding Jason's always excellent technical skills) suspect there's something else awry

C
 
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