Acura 2010 MDX - Manual (Page 538)

The floor mats that came with your
vehicle hook over the floor mat
anchors. This keeps the floor mats
from sliding forward, possibly
interfering with the pedals, or
backwards, making the front
passenger's weight sensors
ineffective.
If you remove a floor mat, make sure
to re-anchor it when you put it back
in your vehicle.
If you use a non-Acura floor mat,
make sure it fits properly and that it
can be used with the floor mat
anchors. Do not put additional floor
mats on top of the anchored mats.
Front Rear
Floor Mats
531
Maintenance