I also have an MS60 with an April delivery. My passenger door started popping open in the past 3 weeks, intermittently. Mainly when I closed my driver side door the passenger door would pop. I think it had to do with the colder weather we are having here in CA. I brought it to the Service Center, but could not replicate my problem, but did mention that the mechanism was a tad more sensitive than the rest of the doors, which would explain it popping open when I closed the driver side door. They replaced the door handle and mechanism today. Will see if it fixes the problem.