hello, I have a 2013 Toyota Venza with 1 proximity key. I am trying to register another key ( i actually have 2 additional keys) that have the exact fcc number as the original key. I follow the instructions on the screen of my MaxiDAS DS708, but when it tells me to place the key against the start button, I get nothing. I also tried erasing the existing keys but the process always fails. I cannot even program the keyless entry portion. can you tell me what I can do?

Tags: toyota , venza , smart , key , keyless , registration , programming