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Old Oct 29, 2012 | 03:49 PM
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Default Slow to awake.

If my 2008 Z51 sits for a few days It will take a long time to unlock and power up the car. Normal? Have not been able to determine what causes it to allow entry and start. Sometimes seconds - sometimes minutes. Ideas?
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Old Oct 29, 2012 | 04:24 PM
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Sounds like the car battery is about gone.
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Old Oct 29, 2012 | 06:31 PM
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Originally Posted by JimTN
Sounds like the car battery is about gone.
or key fob battery (which should give you a message on the DIC if key fob isn't recognized)
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Old Oct 30, 2012 | 06:41 AM
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What's the average life of the fob battery? The car sits idle a lot. 2008 with 9000 miles.
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Old Oct 30, 2012 | 10:41 AM
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Lithium batteries build up an internal resistance (passivation) layer in them when not used that causes their voltage to drop. The longer they aren't used, the worse the layer will become. Then once you use them, the layer breaks down and the voltage returns to normal and they start working properly.

I suspect this is what you're experiencing. It gets worse as the batteries age. It's probably time for you just to replace your FOB batteries. They only cost a couple bucks, but just be careful opening the key FOB, because they are poorly made and its easy to break off the tiny plastic tabs that hold them together if you aren't gentle with it.
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Old Oct 31, 2012 | 05:45 PM
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Originally Posted by river 1947
What's the average life of the fob battery? The car sits idle a lot. 2008 with 9000 miles.
I replaced mine when they were about 4 years old.
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