Cancelling R side mirror to not look down on reverse
Just switch the selection mirror button on the driver's door to the opposite side mirror and it will eliminate the feature.
I first saw this feature on by buddies 850i years ago. Cool at first, but then became a pain in the arse when you want to see higher than just the R side curb.
'99 BMW 540i6 (black on black)
'99 Lexus Rx300