TOYOTA 2010 Yaris - Manual (Page 127)

113
1-7. Safety information
1
Before driving
Child restraint systems with a top tether strap
Remove the luggage cover. ( →P. 234)
Remove the deck board and auxiliary boxes. ( →P. 233)
Remove the head restraint.
Split rear seats (type A), Non-split rear seat
Latch the hook onto the anchor
bracket and tighten the top tether
strap.
Make sure the top tether strap is
securely latched.