It's interesting to hear 2 fobs required aftermarket remote start! Salesman said there are "3 choices" for remote start they install at dealership& the easiest was the one I saw (only saw/not demonstrated)had Mazda badging. He said "push button twice and then push something once".. Said it won't void warranty because they do install. When I asked if it was same key fob that would come with car if one didn't get remote & he said "nothing is different" but I'm hearing otherwise here. If he "neglected" to tell me I'll get 2 fobs, then I don't like his evading that so glad to find this forum before handing over $32K & getting surprised after! (I walk & already I hate having 1 fob in my pocket, so 2 is out) Salesman also said to avoid the MMS as the "technology isn't there yet "...( Tks for any input as taking hubby back today, so I'm here to see what else to ask them & check out during test drive!