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Old 03-07-2018, 07:19 AM   #2
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,261
You got it in one: The newer keyless systems operate at a higher power level than the earlier "proximity" keys, which is why the batteries die faster. This is also how some cars disarm the alarm and unlock the driver's door as you approach.

The Boxster key is only active when within a certain distance of the key slot, other wise they cannot see each other. That said, I can't see why you would leave the key to the car laying about.
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