Instructions for a Cosco Alpha Omega Elite

The Cosco Alpha Omega Elite is a 3-in-1 car seat that converts to accommodate infants, toddlers and older children. Installation instructions for the Alpha Omega Elite vary depending on the age and weight of your child. Install the seat in a rear-facing position for babies under one year and/or weighing less than 20 lbs. Toddlers weighing up to 40 lbs. can use the 5-point harness in the forward-facing position. Once your child outgrows the harness, you can install the seat as a belt-positioning booster seat.


Pull the seat pad off the front corners of the Alpha Omega car seat to expose the slots for the LATCH belt.

Thread the entire LATCH belt through the upper slot the reach your hand under the pad and pull one end of the belt between the crotch buckle and the rear harness slot and push the LATCH hook out through the rear-facing belt path. Repeat for the other side of the car seat.

Replace the seat pad and recline the car seat fully.

Place the Cosco Omega seat in a rear-facing position in a rear seat of your vehicle.

Connect the LATCH hooks on each side of the car seat to the anchors located in your vehicle. Consult your vehicle owner's manual for the location of the anchors.

Pull up on the loop of the belt while pressing firmly on the car seat to tighten the LATCH belt.


Feed the LATCH belt through the upper slot in the side of the car seat shell and out through the upper slot on the other side.

Place the Alpha Omega car seat flush against the seat back of a rear seat in your vehicle. Recline the seat if needed to make it flush with the back of the seat.

Fasten the LATCH hooks on both sides of the car seat onto the anchors in your vehicle seat. Consult your vehicle's owner's manual for locations of the anchors.

Push firmly on the Alpha Omega seat with your knee while pulling hard on the loop of the LATCH belt to tighten it.

Attach the LATCH hook of the top tether strap to the anchor above or behind your vehicle seat. Pull the tether belt to tighten it while continuing to press firmly on the car seat with your knee.

Belt-Positioning Booster

Fasten the LATCH belt hooks together behind the Alpha Omega car seat.

Remove the seat base before installing the seat in your vehicle. Recline the seat to the lowest setting and push the tab down on right side of base while pushing on and removing the bar from the other side. Pull the recline lever to lift the seat off its base.

Remove the harness by unfastening it from the T-shaped splitter plate on the back of the car seat and feeding it out through the slots to the front of the seat. Release the buckle section by and threading the metal plate on the underside of the seat up through the slot to the top of the seat.

Return the seat to the fully upright position.

Place the booster seat in the vehicle with the seat back flush against the back of the vehicle seat.

Place the child in the seat and pull the lap/shoulder safety belt of the vehicle over her chest and lap and lock the buckle.

Thread the safety belt through the notch in the belt positioning guide so that the belt lies against the child's chest without obstructing her face or neck.

Pull up on the safety belt to tighten it.


Always check that the seat is installed properly before using it. For rear-facing or forward-facing installations, the seat should not move more than one inch in any direction if installed correctly.

Your car seat has an expiration date printed on it. You must cease using the car seat once that date has passed.


The harness must be removed when using the seat as a booster, and the LATCH connectors must not be used.

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