Tesla MODEL X 2015 Owner's Manual page 45

Child Safety Seats
Third Row Seats
Infants and children can occupy a third row seat using a belt-based child restraint system.
Compatible with AS/NZS 1754 child restraint systems Type A, A2, A4, B, D, E, and F.
Larger children can also occupy a third row seat using a Type B2 booster attached as described in the instructions
provided by the child restraint system manufacturer.
NOTE: To accommodate a large rear-facing child restraint, you may need to move the corresponding second row
seats forward, and angle the seat back to 15 degrees (or 10 degrees rearward from its forward-most position) to
make room for the child restraint.
Seating and Safety Restraints 43