When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
That's normal for the side view mirrors to move down when reversing. If you want to turn it off, on the driver side where the side mirror controls are, press whichever side is lit so the light turns off. It should deactivate the mirrors. I actually find the feature convenient when backing in near a curb.
I was looking for that button for a while after the function was turned off accidentally after a service. I think it is very helpful, especially when you reverse into a parking stall you get to see the lines on both sides and you get to back in straight and leave both sides even spaces.