Quote:
Originally Posted by WNDSRFR
Batteries certainly do go dead.
It takes usually at least a couple years. But, then they just go dead..
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A battery sitting in a modern car will slowly drain from all the electronics in the car that continue to draw power from it, even when the car is turned off. Just having keyless entry means something is using power to monitor for the signal.
I doubt it would take two years to drain the battery. It's likely just a few weeks.