ONEFIT^™ LX

Booster Installation & Usage

For children 40-100 lbs. (18-45.3 kg) and up to 57" (145 cm) tall.

For full details, refer to User Guide

Chicco OneFit LX & OneFit Max All-in-One Car Seat - Installing with Seatbelt: Forward-Facing

Learn how to correctly install the OneFit LX & OneFit Max All-in-One Car Seat forward-facing with the lap/shoulder vehicle seat belt

Secure to Vehicle: Booster

Quick Tip: Use of LATCH and top tether in booster mode is optional. If LATCH and top tether are not used, ensure the LATCH and tether straps are properly stored.

Chicco OneFit LX booster seat belt image

Place your OneFit^™ on your vehicle seat in forward-facing position. Make sure it is not blocking the vehicle seat belt buckle and that the base is flat on the vehicle seat surface. Lay the tether strap over the back of the vehicle seat.

Check that the headrest of the vehicle seat does not interfere with the headrest of the OneFit^™

Chicco OneFit LX recline adjustment image

Squeeze the Recline Adjustment Handle and pull forward to adjust to a reclined position.

Make sure the bubble level falls between the two lines for the proper forward-facing booster installation mode of use. Re-adjust recline as necessary.

Remove the LATCH connectors from the LATCH connector storage compartments. Make sure the LATCH adjuster straps labeled “Pull 1st” and “Pull 2nd” are loosened to their full length.

Slide both straps into the red forward-facing opening on both sides and close both LATCH connector storage compartments. Attach both LATCH connectors to the LATCH anchor bars in the vehicle.

Pull up on the LATCH adjuster strap labeled “Pull 1st” to tighten and remove the slack.

Then, pull down on the LATCH adjuster strap labeled “Pull 2nd” to secure the OneFit^™ in place.

Optional: Locate the tether anchor in your vehicle, attach the tether hook and pull the adjuster strap to tighten.

Check installation.

Secure Child: Booster

Chicco OneFit LX & OneFit Max All-in-One Car Seat - Securing Child: Booster

Once your child is between 40-100 lbs. and up to 57" tall, you will need to transition your OneFit LX or OneFit Max All-in-One Car Seat to Booster mode. Learn how to correctly secure your child.