Well who cares anyway? Based on all these threads, the feature doesn't even work. Mine hasn't worked since last summer.it's the worst feature ever started. In reality, it does not save gas or emissions, it does strain your starter and battery system, and recently noted the chain tensioner wear on several posts.
Mine was replaced last December and still works fine to this day.After three trips to my dealer to charge the battery (ISG still not working after that ), they finally replaced the battery with a new one! Next day ISG works almost on every stop!!! Let see for how long will work.