On the procurement process and the livaison is 5/5. No complaints. Delivery comply within the stated deadlines. By cons for replacing my c3 key (the one with two buttons) is a bit more complicated. First a little notice would have been the biggest help. Indeed, it was necessary that I find a YouTube video to discover he had a hunting pin to release the original key from its holder and install it in the new shell. Then, and this is the downside: there is too much play in the battery holder. What makes the electrical contact is not made well. After research of failure (I have an electric tester), I calibrate the battery with a piece of paper to make up the game. Since it works. I know that a resume injection matrix does a blind, then I suggest the seller to change the metal tabs of contact with the battery to ensure good electrical contact. That said, now it works as I wanted. That cost me time and a new one because I thought mine was HS when in fact it came from the battery support. So in the end = 3-star ...