[pcrispy]

I've searched quite a bit and either I'm searching the wrong stuff in the manual and online, or I'm overlooking this. Is there a way to completely power down the car in order to clean the interior without triggering every computerized function to kick on? I tried keeping the key in the house but regardless if you push this or that then boom it kicks on something which then reacts via the NAV, AC, etc for stuff getting pushed. I just picked up a 2016 750i this weekend and while the dealer had it cleaned well, there are some streaks and stuff on the interior screens and buttons that I want to get cleaned better.