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Is this good for only opening the door since it won't immobilize the alarm? That means it would only be a help if you leave a key in the car. Anybody know the answer, not in the manual.
I read somewhere in Porsche literature (or else I'm going nuts) that the plastic key does all that the regular keys do but Porsche sez it's not to be used routinely because it's plastic and, unlike brass, won't hold up over time.