Toyota Avalon Owner's Manual page 134

2. To remove the child booster
press the buckle release button and
allow the belt to retract.
112
'06 AVALON_U (L/O 0508)
—Using a top strap
seat, Follow the procedure below for a child
restraint system that requires the use
of a top strap.
I n f o r ma t i o n P r o v i d e d b y :
Symbol
Anchor brackets
Use the anchor bracket on the package
tray behind the rear seat to attach the top
strap.
Anchor brackets are installed for each
rear seating position.
This symbol indicates the location of the
anchor bracket.