I have just bought my 1st 4x4, navara aventura last week. I to was a little concerned with 4 wheeldrive when turning, locking up. However as I see from previous posts, this seems to be normal. I have only noticed this when trying it out on normal road. So best i wait till i really need it. On a different matter i am thinking of getting rear view camara. Does anyone know if this can be connected to the existing sat nav screen.