The short answer
Use a child seat that fits your child and vehicle. The AAP recommends rear-facing as long as possible, until the seat’s height or weight limit is reached; age alone is not a reason to turn it.
In this guide · 12 sections
Keep in mind
- Keep your child rear-facing until the seat’s maximum rear-facing height or weight limit.
- After outgrowing that limit, use the next suitable seat as directed by its manufacturer.
- Check harness fit and installation against the seat and vehicle manuals.
- Children younger than 13 should ride in the back seat when possible.
Which way should a 31–36-month-old ride?
Keep your child rear-facing for as long as the seat allows, until they reach the seat’s maximum rear-facing height or weight limit. Age alone does not determine when to turn the seat.
Follow the labels and instructions for your exact car seat and child. Once the rear-facing limit is reached, use a forward-facing seat with a harness according to its instructions.
When should you switch to forward-facing?
Switch only after your child outgrows the rear-facing height or weight limit in the seat manual.
Keep using the forward-facing seat with its harness until your child reaches that seat’s upper height or weight limit.
How should the harness fit?
The harness should be snug against your child, with no slack that can be pinched at the shoulder.
If the seat has a chest clip, position it at armpit level. Check the manual for the correct harness setting and fit.
Where should the harness sit in a rear-facing seat?
For a rear-facing seat, route the shoulder straps through the harness slots at or below your child’s shoulders, as directed by the manufacturer.
Seats differ, so follow the instructions for your model rather than relying on a general picture or rule.
How can you check the installation?
Install the seat using the vehicle and seat manuals. At the belt path, it should not move more than about 1 inch side to side or front to back.
If you are unsure, seek help from a certified Child Passenger Safety Technician.
When is a top tether used?
Use the top tether for a forward-facing seat if the seat and vehicle instructions specify it. It can help limit how far the seat moves in a crash.
Check the vehicle manual for the correct anchor point; do not attach it to an unapproved hook or cargo point.
Can your child wear a thick coat in the seat?
Bulky coats can compress in a crash and leave the harness too loose. Use thin layers and tighten the harness first.
If needed, place the coat or a blanket over your child after they are securely buckled.
Where should your child sit in the car?
Children younger than 13 should ride in the back seat when possible.
Never place a rear-facing car seat in front of an active passenger air bag.
What can you check today?
Read the label and manual for your child’s seat and confirm the rear-facing height and weight limits. Do not turn the seat only because your child is 31–36 months old.
Check the harness fit, installation movement, and air-bag position. Get a qualified seat check if anything is unclear.
When to seek support
Some signs need emergency help; other concerns can be discussed with your child’s healthcare team.
- The seat does not fit the child or vehicle according to its instructions.
- Harness is loose, twisted, or incorrectly positioned.
- A rear-facing seat is placed in front of an active air bag.
- You are unsure whether the seat was installed correctly.
Sources used for this guide
- American Academy of Pediatrics / HealthyChildren.org — HealthyChildren – Rear-Facing Car Seats for Infants & Toddlers
- American Academy of Pediatrics / HealthyChildren.org — HealthyChildren – Car Seat Safety Checkup: 10 Questions to Consider
- American Academy of Pediatrics / HealthyChildren.org — HealthyChildren – Rear-Facing Car Seats for Infants & Toddlers
- American Academy of Pediatrics / HealthyChildren.org — HealthyChildren – Car Seat Safety Checkup: 10 Questions to Consider
- www.nhtsa.gov — regional guidance
English editorial review:
The English text and regional guidance have been checked editorially. This is not an individual clinical assessment.
Luluna provides general parenting information. It does not diagnose conditions or replace your child’s healthcare professional.
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