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Jun 4, 2012 at 15:26 comment added Alex @mark: the key is chipped. I bought a used key and reprogrammed the chip to associate it with my car. It functions normally. I wanted to know if it's legal because I bought the key from a junk yard, not from a dealer.Mercedes does not sell programmable keys that I can program (I couldn't find any in my region).
Jun 3, 2012 at 16:10 comment added Zelda The keys use the same unlocking mechanism but the new styles of keys are different (and much nicer). If you buy a new key you'll get the new style. Mercedes keys don't need any hardware to be accociated, you just plug it into your car. However I've heard you're SOL if it's a used key, as they can only be programmed once.
Jun 2, 2012 at 19:35 history answered Mark Johnson CC BY-SA 3.0