NISSAN 2015 Frontier - Owner's Manual - Manual (Page 60)

3. Pull the shoulder belt until the belt is fully
extended. At this time, the seat belt retractor
is in the ALR mode (child restraint mode). It
reverts to the ELR mode when the seat belt
is fully retracted.
4. Allow the seat belt to retract. Pull up on the
shoulder belt to remove any slack in the belt.
5. Remove any additional slack from the seat
belt; press downward and rearward firmly in
the center of the child restraint to compress
the vehicle seat cushion and seatback while
pulling up on the seat belt.
Rear-facing – step 3
LRS0669
Rear-facing – step 4
LRS0670
Rear-facing – step 5
WRS0762
Safety—Seats, seat belts and supplemental restraint system 1-39