Cosco Finale 2-in-1 Booster Car Seat: A Comprehensive Guide
This guide details installation, safe usage, and maintenance of the Cosco Finale 2-in-1 booster, ensuring your child’s safety and a pleasant shopping experience.
The Cosco Finale 2-in-1 Booster Car Seat is a popular choice for parents seeking a versatile and affordable child restraint system, readily available at Costco locations and online. This seat transitions seamlessly from a forward-facing harness booster to a high-back booster, accommodating children as they grow. Understanding the manual is crucial for correct installation and ensuring optimal safety.
Costco’s dedication to quality and value makes the Finale an attractive option, offering brand-name reliability at a competitive price. Before use, familiarize yourself with all components and instructions. Your child’s height, weight, and age dictate the appropriate mode – forward facing with harness or booster seat. Remember, proper installation and adherence to the manual’s guidelines are paramount for your child’s protection during every journey.
Understanding the 2-in-1 Functionality
The Cosco Finale 2-in-1’s core strength lies in its adaptability. It begins as a forward-facing car seat utilizing a five-point harness, securing children weighing over 22 pounds. As your child grows, the harness can be completely removed, transforming the seat into a high-back booster for children at least 40 pounds and 40 inches tall.
This transition is straightforward, detailed in the user manual. Removing the harness is only necessary for booster mode or cleaning the seat pad. The manual emphasizes checking your child’s height and weight to determine the correct configuration. This dual functionality extends the seat’s usability, offering long-term value. Always consult the manual for specific weight and height limits for each mode, ensuring a safe and comfortable ride for your growing child.
Key Features and Benefits
The Cosco Finale 2-in-1 boasts several features prioritizing safety and convenience. It includes a robust five-point harness system, ensuring a secure fit for forward-facing children. Side impact protection is integrated into the seat’s design, adding an extra layer of security. The easily removable harness facilitates the transition to booster mode when your child outgrows the harness restraints.
Beyond safety, the Finale offers practical benefits. The seat pad is removable and washable, simplifying cleaning. The manual details how to properly inspect the seat for wear and tear. Costco’s commitment to value means you receive these features at a competitive price. Ultimately, the Finale provides peace of mind, combining safety, comfort, and affordability for parents and children alike.

Installation Guide: Forward Facing with LATCH
Proper installation is crucial for safety; this section guides you through connecting the LATCH system and securing the Cosco Finale correctly in your vehicle.
Preparing for Installation
Before beginning, carefully read the Cosco Finale 2-in-1 manual to understand all instructions and safety guidelines. Ensure your vehicle’s seat is compatible and free from any obstructions. Locate the lower anchor points and top tether anchor in your vehicle – consult your vehicle owner’s manual for their precise location.
Fully loosen the harness straps on the car seat to allow for easier positioning. Verify the car seat is in forward-facing mode if that’s your intended configuration. Double-check that the car seat isn’t expired and that all parts are present and undamaged. A stable and correct installation is paramount for your child’s safety, so take your time and proceed methodically.
LATCH System Connection
To connect using the LATCH system, locate the car seat’s lower anchor connectors and align them with the vehicle’s lower anchors. Push the connectors firmly until they click securely into place. Ensure both connectors are engaged and locked. It’s crucial to verify a solid connection by pulling upwards on the car seat near the LATCH connectors – there should be minimal movement.
If your vehicle has weight limits for LATCH usage, confirm your child’s combined weight with the car seat doesn’t exceed those limits. Remember, the LATCH system is just one part of a secure installation; always proceed to securing the car seat and verifying proper installation afterward for optimal safety.
Securing the Car Seat
After connecting the LATCH system, or utilizing the vehicle’s seatbelt, it’s vital to secure the car seat further. Push down firmly on the car seat while simultaneously pulling the tightening strap (if equipped) to remove any slack. The car seat should not move more than one inch side-to-side or front-to-back when tested at the belt path.
Double-check that the harness straps are threaded correctly through the appropriate slots and are not twisted. A snug fit is essential; you should not be able to pinch any excess webbing at the shoulder. Regularly inspect the tightness of the connections, especially after shorter trips, to maintain a secure and safe ride for your child.
Checking for Proper Installation
To verify correct installation, grasp the car seat near the belt path and attempt to move it side to side and front to back. Movement should not exceed one inch in any direction. If excessive movement is detected, retighten the LATCH connectors or the vehicle seatbelt and re-evaluate.
Ensure the harness straps are flat and not twisted. Perform a “pinch test” at the shoulder area – if you can pinch any webbing, tighten the harness further. Confirm the car seat is level; an uneven installation can compromise safety. Regularly check the installation, especially after vehicle use, to guarantee continued security for your child during every journey.

Installation Guide: Booster Seat Mode
Transitioning involves removing the harness system for proper vehicle seatbelt positioning, ensuring your child’s height and weight align with booster guidelines.
Transitioning to Booster Mode
Before switching to booster mode, confirm your child has exceeded the forward-facing harness weight and height limits specified in the manual. This ensures a safe and appropriate transition. Carefully detach the existing five-point harness system; it’s crucial to store these parts safely as they will be needed if you ever revert back to the harnessed mode.
The harness components should be secured so they don’t interfere with the vehicle’s seatbelt. Double-check that all harness straps are completely loosened and stowed away according to the manual’s instructions. This step is vital for preventing accidental entanglement or misuse. Remember, only remove the harness for cleaning or when converting to booster mode.
Removing the Harness System

To safely remove the five-point harness, begin by fully loosening all harness straps. Simultaneously, push down on the harness buckle release button. This action allows for easier detachment of the straps from the buckle. Once loosened, carefully unthread the harness straps from the car seat’s slots, following the instructions detailed in the user manual.
It’s essential to store the harness components in a secure location, as they are required if you decide to return to the harnessed mode later. Only remove the harness system when cleaning the seat pad or transitioning to booster seat mode. Ensure no straps are left dangling or accessible to the child, preventing potential hazards.
Positioning the Child in the Booster Seat
Once transitioned to booster mode, ensure your child is properly positioned for optimal safety. Have your child sit with their back against the vehicle seat back, and their legs dangling comfortably over the seat edge. It’s crucial that the vehicle’s seat belt fits correctly across their shoulder and lap.
Never allow the shoulder belt to cross the child’s face or neck. Adjust the vehicle’s seat belt height if necessary to achieve a proper fit. The lap belt should lie low and snug across the upper thighs, not the stomach. Supervise your child to ensure they remain seated correctly throughout the journey, and remind them not to play with the belt.
Using the Vehicle Seat Belt
In booster mode, the Cosco Finale relies entirely on the vehicle’s seat belt system for restraint. Ensure the seat belt is securely fastened and lies flat across your child’s shoulder and lap. The shoulder belt should be positioned across the middle of the shoulder, not the neck or face. The lap belt must be low and snug on the upper thighs, never across the abdomen.
To tighten the belt, pull the shoulder strap. Check for any slack and readjust as needed. Regularly verify the belt’s proper positioning throughout the trip, as children can shift during travel. Never modify or add any padding to the seat belt, as this could compromise its effectiveness. Always follow vehicle manufacturer guidelines for seat belt usage.

Safety Features and Regulations
The Finale boasts a robust harness, side impact protection, and meets or exceeds all US safety standards for child restraint systems.
Harness System Details
The Cosco Finale 2-in-1 features a five-point harness system designed to securely restrain your child. Before each use, ensure the harness straps are fully loosened by pushing down on the harness adjuster buckle. This allows for easy placement and removal of your child. To tighten, pull the straps until snug, ensuring no slack remains.
Proper harness fit is crucial for safety. The straps should lie flat and be positioned across your child’s shoulders, at or below their ears. The chest clip should be positioned at armpit level. Regularly inspect the harness for any signs of wear or damage, and always replace it if necessary. Remember to only remove the harness when transitioning to booster mode or for cleaning the seat pad.
Side Impact Protection
The Cosco Finale 2-in-1 booster car seat incorporates crucial side impact protection features designed to enhance your child’s safety in the event of a collision. While specific details regarding the exact technology aren’t explicitly detailed in readily available manuals, the seat’s construction includes energy-absorbing foam and headrest wings.
These components work together to help distribute crash forces away from your child’s head, neck, and torso. Proper installation, following the guidelines in this manual, is paramount to maximizing the effectiveness of these safety features. Always ensure the car seat is securely installed using either the LATCH system or the vehicle seat belt, and that it fits snugly against the vehicle seat.
Compliance with Safety Standards
The Cosco Finale 2-in-1 booster car seat is engineered and manufactured to meet or exceed all applicable U.S. Federal Motor Vehicle Safety Standards (FMVSS) for child restraint systems. This commitment ensures the seat provides a high level of protection for your child during vehicle travel.
Specifically, it’s designed to pass stringent crash testing protocols, evaluating its performance in frontal, side, and rollover impacts. Adherence to these standards is verified through rigorous quality control processes throughout the manufacturing cycle. Owners should retain this manual for future reference, as it contains vital information regarding proper installation and usage, contributing to the seat’s continued compliance and your child’s safety. Regular inspection for wear and tear is also crucial.

Maintenance and Care
Regular cleaning of the seat pad and shell, alongside inspections for wear, will maintain the Cosco Finale’s functionality and ensure continued safety.
Cleaning the Seat Pad
To clean the Cosco Finale 2-in-1 booster seat pad, it’s crucial to first detach it from the car seat shell. The manual explicitly states only removing the harness system for cleaning or transitioning to booster mode. Gently remove the seat pad, checking for any loose debris beforehand.
The seat pad is typically machine washable – consult the care label for specific temperature and cycle recommendations. Use a mild detergent to avoid damaging the fabric or any integrated padding. After washing, ensure the seat pad is completely dry before reattaching it to the car seat.
Avoid harsh chemicals or abrasive cleaners, as these can compromise the pad’s integrity and potentially affect its safety features. Regular cleaning helps maintain hygiene and prolongs the life of your Cosco Finale booster seat.
Cleaning the Car Seat Shell
Maintaining the Cosco Finale 2-in-1 car seat shell requires a gentle approach. Wipe down the plastic surfaces with a damp cloth and mild soap solution. Avoid abrasive cleaners, as they can scratch or damage the shell’s protective coating. Pay particular attention to areas prone to spills or grime buildup, such as around the buckle and LATCH connectors.
Ensure all soap residue is thoroughly removed with a clean, damp cloth. Allow the shell to air dry completely before reinstalling the seat pad or using the car seat. Do not submerge the car seat shell in water, as this could damage internal components.
Regularly inspect the shell for cracks or damage. A clean shell contributes to the overall hygiene and longevity of your Cosco Finale booster seat, ensuring a safe and comfortable ride for your child.
Inspecting for Wear and Tear
Regular inspection of your Cosco Finale 2-in-1 booster is crucial for continued safety. Carefully examine the harness straps for fraying, cuts, or any signs of weakening. Check the buckle for smooth operation and ensure it securely locks and unlocks. Inspect the LATCH connectors for damage or corrosion, verifying they engage properly with the vehicle’s anchors.
The car seat shell should be checked for cracks or breaks. Pay close attention to areas around the impact zones. If any damage is detected, discontinue use immediately. Consistent monitoring ensures the car seat functions as intended.

Remember, your child’s safety depends on a properly maintained car seat. Replace any worn or damaged components promptly to guarantee optimal protection during every journey.

Costco Membership and Purchasing
To purchase the Cosco Finale 2-in-1, a valid Costco membership is required, either online via Costco.com.mx or at a local warehouse.
Finding a Costco Location
Locating a Costco warehouse to purchase the Cosco Finale 2-in-1 booster car seat is straightforward. Costco operates hundreds of locations globally, offering convenient access for members. You can easily find the nearest Costco using the store locator tool available on the official Costco website, Costco.com.mx. Simply enter your city or zip code, and the tool will display a map with nearby warehouse locations, addresses, and contact information;
Alternatively, you can contact Costco’s member services directly at 55 5246 5593 or 55 to inquire about the closest warehouse. Remember to have your membership information readily available when contacting member services. Visiting a physical Costco location allows you to inspect the car seat firsthand and receive assistance from store associates if needed, ensuring you make the best choice for your child’s safety.
Costco Online Purchasing Process
Purchasing the Cosco Finale 2-in-1 booster car seat online through Costco.com.mx is a convenient option for members. Begin by visiting the website and logging into your account using your membership credentials. Ensure your membership is current and registered for online purchases. Once logged in, use the search bar to locate the “Cosco Finale 2-in-1 Booster Car Seat.”
Add the car seat to your cart and proceed to checkout. Review your order carefully before submitting. Costco requires a valid membership to complete online purchases. For a digital membership experience, download and install the Costco app on your device. This streamlines the process and provides easy access to your membership details. Enjoy the convenience of home delivery for your child’s safety seat!
Costco Membership Requirements
To purchase the Cosco Finale 2-in-1 booster car seat at Costco, either in-store or online, a valid Costco membership is essential. Costco operates as a membership warehouse club, offering exclusive benefits and pricing to its members. Several membership tiers are available, including Gold Star and Executive, each with varying annual fees and rewards.
Before shopping online at Costco.com.mx, ensure your membership is active and registered on the website. You may need to create an online account linked to your membership number. For online purchases, having the Costco app installed on your mobile device and a digital membership card can simplify the checkout process. A current membership guarantees access to the best prices and exclusive member services when acquiring this important safety item.

Troubleshooting Common Issues
Addressing harness adjustments, LATCH connector difficulties, and installation verification challenges ensures proper car seat function and maximizes child safety during travel.
Harness Strap Adjustment Problems
Difficulty adjusting the harness straps is a common concern with the Cosco Finale 2-in-1 booster. Ensure the straps aren’t twisted, as this restricts smooth movement. Fully loosen the straps before attempting adjustment; pushing down on the harness buckle while pulling the shoulder straps can help.
If straps still won’t tighten, check for obstructions near the buckle or strap path. Verify the harness is correctly threaded through the car seat’s slots. Remember to always re-check tightness after each adjustment, ensuring a snug fit – no more than one finger’s width should fit between the strap and your child’s collarbone. Consistent checks are vital for optimal safety.

LATCH Connector Difficulties
Encountering trouble connecting the LATCH connectors is frequent during installation of the Cosco Finale 2-in-1. First, confirm the vehicle’s LATCH anchors are accessible and not obstructed. Ensure the car seat’s LATCH connectors click securely onto the vehicle anchors – a distinct ‘click’ sound confirms proper attachment.
If connectors won’t latch, try repositioning the car seat slightly. Sometimes, a small adjustment is all that’s needed. Double-check that the LATCH straps aren’t crossed or tangled. If issues persist, consult your vehicle’s owner’s manual for specific LATCH anchor information. Remember, a secure LATCH connection is crucial for the car seat’s stability and your child’s safety.
Installation Verification Challenges
Confirming correct installation of the Cosco Finale 2-in-1 can present challenges. After securing with LATCH or the vehicle seatbelt, perform the “inch test.” Grasp the car seat near the belt path and attempt to move it side-to-side or front-to-back. Movement exceeding one inch indicates a loose installation requiring readjustment.
Verify the car seat is level. An uneven installation compromises safety. Re-check the tightness of both the LATCH straps or the vehicle seatbelt. If using the seatbelt, ensure it’s locked. Don’t hesitate to seek assistance from a certified Child Passenger Safety Technician (CPST) if you’re unsure. Prioritize a firm, level, and secure installation for optimal child protection.
