OK, here goes, just what you want to hear:How precisely does it present a security risk? If the car is outside of the complex (and the card has no markings identifying it's place of origin), how could it impact security? If the car is IN the complex, the security breach is in the complex, too, rendering said risk moot.
In any event, as my wife and I both use the card, it is logical that the card stay with the car, so that one of us doesn't end up carrying it off, and it being unavailable when needed.
Further, there was no warning given with the card that it could be impacted by heat.
Yes, it's all property management's fault. You should threaten to sue them for a gazillion bazillion dollars!
Seriously though: The technology used for key cards, key fobs, etc. can fail due to heat (they can also fail due to cold.) They can fail if they've been bent/creased, dropped too many times, or otherwise handled roughly.
And sometimes? These things just happen. It's a fluke. There is no rhyme or reason.
Twice in two weeks? very MINOR inconvenience. And there may not be anything the property mgr can do--especially if the card is reading that it is fine.
You need to make a written request for a new card (and maybe even pay the replacement fee, as there is no way to tell what or who is at fault). Or request a second card for the wife. Crap happens...sometimes technology doesn't always work like it's suppose to. No ONE person is at fault. Bits, pieces, parts, etc. just sometimes fail.
As far as security risk? Say a visitor to the complex lifted it out of your vehicle one night. Then the next night used it to gain access and kill someone.
If someone steals it out of your car, while it's not in the complex? You are under the mistaken impression that thiefs/criminals will not go to any lengths necessary to determine what exactly the key card opens--and then use said key card to their advantage. Would you keep the keys to your home in the car all the time??