Tesla MODEL S 2012 Owner's Manual page 32

Child Safety Seats
In the rear seats, install LATCH child safety seats in the
outboard seating positions only. Use only a seat belt
retained seat in the center position.
To install a LATCH child safety seat, carefully read and
follow the instructions provided by the manufacturer of
the child restraint system. These instructions describe
how to slide the child restraint system onto the seat's
anchor bars until you hear it "click" into place. You may
need to push the child restraint system firmly against the
seat back to ensure it fits snugly.
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Adjust until the child restraint system is fitted firmly
against the seat back. Ensure the child restraint system
fits snugly.
MODEL S Owner's Manual