The front seats include integrated head supports that you can not adjust.
The second row outboard seats include an adjustable head support that you can
raise, lower, or remove. When either of these seats is occupied by a passenger
that is not in a child safety seat, the corresponding head support
Your Model Y seat belts are designed for adults and larger children. You must
restrain infants and small children in
rear seats only, and you must use a suitable child safety seat appropriate for
the child's age, weight, and size.
WARNING: Never seat a child in the front passenger seat, even if u