FORD 2015 Fiesta - Manual (Page 159)

WARNINGS
Always make sure that objects
cannot fall into the driver foot well
while the vehicle is moving. Objects
that are loose can become trapped under
the pedals causing a loss of vehicle control.
Failure to properly follow floor mat
installation or attachment
instructions can potentially cause
interference with pedal operation causing
a loss of vehicle control.
E142666
To install floor mats, position the floor mat
so that the eyelet is over the retention post
and press down to lock in.
To remove the floor mat, reverse the
installation procedure.
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Fiesta (CCT), enUSA, Second Printing
Driving Hints