Acura MDX Owner's Manual page 161

uuAdjusting the MirrorsuPower Door Mirrors
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Expanded View Driver's Mirror
Inner Segment
Outer Segment
160
The driver's side door mirror has outer and
inner segments.
The outer segment is slightly curved to provide
a wider angle view than a standard flat mirror.
This wider view may help you check areas that
are not visible using a standard door mirror.
1Expanded View Driver's Mirror
Objects visible in the outer segment of the driver's
side door mirror appear smaller than objects in the
rest of the mirror. But in fact, they are closer than
they appear.
Do not rely on your mirrors. Always look to the side
and behind your vehicle before changing lanes.