Toyota Prius+ Owner's Manual page 180

1-8. Safety information
(1) For the CRS which do not carry the ISO/XX size class identifica-
tion (A to G), for the applicable mass group, the car manufac-
turer shall indicate the vehicle specific ISOFIX child restraint
system(s) recommended for each position.
Key of letters inserted in the above table:
IUF: Suitable for ISOFIX forward-facing child restraints systems of
universal category approved for the use in this mass group.
IL: Toyota recommend to use "TOYOTA MIDI" approved for the use
in this mass group. When using this child restraint system,
adjust the support leg to 6th lock position from 1st lock position
where the support leg is shortest position. Move the seat to the
rear most lock position, and adjust the seat back to the 2nd lock
position from the most upright position.
X: ISOFIX position not suitable for ISOFIX child restraint systems
in this mass group and/or this size class.
*
: When you use a child restraint system in this position, remove
the head restraint.
The child restraint systems mentioned in the table may not be avail-
able outside of the EU area.
Other child restraint systems different from the systems mentioned in
the table can be used, but the suitability of the systems must be care-
fully checked with the child restraint system manufacturer and
retailer.
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PRIUS +_OM_OM47821E_(EE)