Lexus LX 470 1998 Owner's Manual page 111

COMFORT ADJUSTMENT
16X020b
To release the belt, press the buckle release button and allow the
belt to retract.
If the belt does not retract smoothly, pull it out and check for kinks
or twists. Then make sure it remains untwisted as it retracts.
94
Third (center seat) seat belt
16X214
Sit up straight and well back in the seat. To fasten your belt,
insert the tab into the buckle.
You will hear a click when the tab locks into the buckle.
If the belt is not long enough for you, hold the tab at a right angle to
the belt and pull on the tab.