How to Disable Mercedes S500 2012 Key with SKP1000 Key Programmer

How to Disable Mercedes S500 2012 Key with SKP1000 Key Programmer SKP1000 key programmer will enable/disable majority BMW and Mercedes keys, but not able to program. (Programming requires BMW/Mercedes specific key programmers.) Vehicle: Mercedes-Benz S500 W221 2012 Intention: The customer has 2 working keys in hand. He want to check if there is other keys,...