Thank you for your response.
I went to pick-up my car this afternoon at the dealer and my ML would not start. The mechnkic claims he tested the 2nd key and it worked for him. Another advisor handled my situation this afternoon. He claims that the "no stasrt" problems, in his opinion, is not the key since the car tries to start, but won't turn over - it makes a clicking sound as a dead battery or starter problem.

Question:
Is the clicking sound consistent with a malfunction electronic key, or does a dead key make the same clicking sound?
Thanks,
Jav