Toyota Display Audio system Owner's Manual page 716

3-7. Other interior features
Insert the locking plate into the
deck rail, rotate the tie-down
cleat 90° , and release the thumb
wheel.
Slide the cleat to the closest
detent in the rail system. You will
feel that the locking plate snaps
into a detent.
3
Tighten the thumb wheel in a
clockwise motion until the clutch
mechanism ratchets.
Check the tie-down cleat to con-
firm that it is locked into a detent
and securely mounted to the
deck rail system.
395