Toyota Highlander Hybrid 2017 Owner's Manual page 67

Anchor brackets (for top tether strap)
Second seats (8-seat models)

An anchor bracket is provided for
each second seat.
Second seats (7-seat models)

An anchor bracket is provided for
both second seats.
Third seats

An anchor bracket is provided for
the third center seat.
HIGHLANDER_HV_U (OM48F12U)
1-1. For safe use
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