Kia Sedona: Placing a passenger seat belt into the auto lock mode
The auto lock mode will help prevent the normal movement of the child in the vehicle from causing the seat belt to loosen and compromise the child restraint system. To secure a child restraint system, use the following procedure.

To install a child restraint system on the outboard or center rear seats, do the following :
1. Place the child restraint system in the seat and route the lap/shoulder belt around or through the restraint, following the restraint manufacturer
Using a child restraint system
Securing a child restraint seat with tether anchor systemStarting the engine
WARNING - Proper footwear
Always wear appropriate shoes when operating your vehicle. Unsuitable shoes
(high heels, ski boots,etc.) may interfere with your ability to use the brake and
acceler ...
To unfasten the rear center belt
1. Press the release button on the buckle (D) and remove the tongue plate (B)
from the buckle (D).
2. To retract the rear center seatbelt, insert the tongue plate or similar small
rigid devic ...