I don't know where you're coming from but there's this shop in Nanuet, NY who works a lot on bimmers, Maserati, MB, etc. and seen them do remote starts on these brand cars. My brother just had his 2010 push to start X5 using a Viper 5902 with a Smart Start module and he loves it. The shops name is Sound Concept. I think their site is
www.soundconcept.com.