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QUOTE (mamamia @ Jun 23 2010, 10:07 AM) index.php?act=findpost&pid=335537

If my old keys functioned well for 4.5 years, I guess the new, unused set will last at least another 4.5 years....

Same situation here... 4.5 years old, never a problem. Wife uses her key every day, I use mine maybe
once per month. So we'll switch while hers still works. It should last until the end, another 3-4 years.