That does not sound normal. My back up camera activates almost immediately as in a sec or two after putting the gear in reverse. It was like this even before I was upgraded to v27.1.

There is a delay when you put the gear back in drive, as if you have to drive off a certain speed before the camera deactivates. The dealer said this is normal.

I recommend a trip to the dealer. You already backed up on a kid, who knows what will happen next.

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2007 E70 3.0