Lexus LFA Owner's Manual page 218

3-5. Other interior features
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Installing the floor mats
STEP 1
Heel stopper
STEP 2
STEP 3
216
Driver' s seat only:
Insert the front of the floor mat into
the groove under the heel stopper.
Place the holes at the rear end of
the floor mat over the retaining
hooks (clips).
Turn the retaining hooks (clips).