Safety 1st Grow and Go Manual: A Comprehensive Guide
This manual, effective from November 8, 2023, details the Safety 1st Grow and Go (CC138) car seat. Adult assembly is required, prioritizing your child’s safety with detailed instructions.
Welcome to the Safety 1st Grow and Go 3-in-1 Convertible Car Seat! This versatile car seat, item number CC138, is designed to grow with your child, offering rear-facing, forward-facing, and booster modes. Prioritizing your child’s safety is paramount, and this manual provides essential guidance for correct installation and usage.
Before you begin, please take the time to thoroughly read and understand all instructions. Your child’s safety depends on proper installation and consistent use according to these guidelines. Remember that the manufacture date on the car seat must meet or exceed the user guide’s effective date – currently November 8, 2023, or later revisions.
This guide will walk you through each stage, ensuring a secure and comfortable ride for your little one, from infancy through childhood. Let’s begin the journey towards safer travels!
Understanding the 3-in-1 Functionality

The Safety 1st Grow and Go car seat excels in adaptability, seamlessly transitioning through three crucial stages to accommodate your growing child. Initially, it functions as a rear-facing car seat, suitable from infancy up to toddlerhood, providing maximum protection for the smallest passengers. As your child grows, it converts to a forward-facing car seat, securing them until they reach preschool age.
Finally, the Grow and Go transforms into a booster seat, continuing to offer safety and comfort as your child approaches big-kid status. This 3-in-1 design eliminates the need to purchase multiple car seats, offering long-term value and convenience. Understanding these modes and their corresponding weight and height limits, detailed within this manual, is vital for ensuring optimal safety throughout your child’s journey.

Installation & Setup
Proper installation is paramount for safety. This section guides you through rear-facing, forward-facing, and booster mode setups, utilizing both LATCH and vehicle seat belt methods.
Rear-Facing Installation (Newborn to Toddler)
Ensuring a secure rear-facing installation is crucial for your little one’s safety. Always prioritize using the first or second buckle slot when the car seat is rear-facing; this is a mandatory requirement for optimal protection. Begin by positioning the car seat at a 45-degree angle, then carefully thread the LATCH connectors or vehicle seat belt through the designated paths.
Confirm a tight fit, minimizing any side-to-side or front-to-back movement – it shouldn’t exceed one inch. Double-check that the car seat base is firmly planted on the vehicle seat. Remember to consult your vehicle’s owner’s manual for specific installation guidelines related to your car model. Regularly inspect the installation to guarantee continued security as your child grows. Proper recline is vital for infant head support.
Forward-Facing Installation (Toddler to Preschooler)
Transitioning to forward-facing requires careful attention to detail for continued safety. Unlike rear-facing, any buckle slot can be utilized when the car seat is positioned forward. Securely attach the LATCH connectors or vehicle seat belt, ensuring a snug fit without excessive movement – again, less than one inch is ideal.
Verify the car seat is level and firmly anchored to the vehicle seat. It’s essential to consult your vehicle’s manual for compatibility and specific instructions. Always double-check the harness height and tightness after installation, adjusting as needed for your growing child. Regularly inspect the installation to confirm it remains secure, especially after adjustments or travel. Proper installation is paramount for impact absorption.
Booster Mode Installation (Preschooler to Big Kid)
Booster mode is designed for older children who have outgrown the harness but are still too small for the vehicle’s seat belt to fit properly. Ensure the vehicle’s seat belt lies flat across your child’s shoulder and lap – never across the neck or face. The car seat should be securely positioned on the vehicle seat, utilizing either the LATCH system or the vehicle seat belt for stability.
Proper belt positioning is crucial in booster mode. Regularly check that the seat belt remains correctly positioned as your child grows. Avoid allowing your child to place the shoulder belt behind their back or under their arm. This mode relies heavily on the vehicle’s safety features, so correct installation and usage are vital for optimal protection during a collision.
Using LATCH System for Installation
The LATCH (Lower Anchors and Tethers for Children) system provides a secure and convenient method for installing the Safety 1st Grow and Go car seat. Locate the lower anchors in your vehicle’s seat bight – the space between the seat cushion and backrest. Connect the car seat’s lower anchor connectors to these vehicle anchors, ensuring a firm click to confirm a secure connection.
Always verify a tight installation. After connecting the lower anchors, firmly tug on the car seat at the belt path to confirm it doesn’t move more than one inch side-to-side or front-to-back. Utilize the tether strap, if applicable, to further stabilize the car seat, connecting it to the designated anchor point in your vehicle. Proper LATCH usage minimizes movement during a crash, maximizing your child’s safety.
Using Vehicle Seat Belt for Installation
The Safety 1st Grow and Go car seat can also be securely installed using your vehicle’s seat belt system. Route the vehicle’s seat belt through the designated belt path on the car seat, ensuring it lies flat and isn’t twisted. Buckle the seat belt and firmly tighten it by pushing down on the car seat while pulling the shoulder belt.
Locking the seat belt is crucial for a secure installation. Most vehicles have a locking latch plate; consult your vehicle owner’s manual to identify its location and operation. Once locked, continue to tighten the seat belt until the car seat doesn’t move more than one inch side-to-side or front-to-back. Regularly check the tightness of the seat belt, as it can loosen over time.

Harnessing & Adjustments
Proper harness use is vital for safety. Adjust the harness height and straps to ensure a snug, secure fit for your growing child, following all guidelines.
Harness Height Adjustment
Adjusting the harness height is crucial as your child grows to ensure optimal safety and comfort. The Safety 1st Grow and Go car seat features multiple harness height positions to accommodate your child’s increasing stature. Always ensure the harness straps are at or above your child’s shoulders when in rear-facing mode, and at or below their shoulders when forward-facing.
To adjust the harness height, locate the harness adjustment strap at the top of the car seat. Typically, this involves releasing a buckle or lever, then sliding the harness straps up or down to the appropriate height setting. It’s essential to re-thread the harness straps when making these adjustments to guarantee they are correctly positioned and securely locked. Verify the adjustment by confirming the straps are level and properly positioned relative to your child’s shoulders before each use. Incorrect harness height can compromise the car seat’s protective capabilities in a crash.
Buckle and Strap Adjustments
Proper buckle and strap adjustments are vital for a secure and comfortable fit for your child within the Safety 1st Grow and Go car seat. Begin by ensuring the buckle clicks securely, confirming a solid connection. To tighten the straps, pull the adjustment strap located near the buckle until the harness is snug – you should not be able to pinch any excess webbing at the shoulder.
When rear-facing, you MUST use the first or second buckle slots; any slot is acceptable when forward-facing. Regularly check the strap length and adjust as needed to maintain a proper fit. Loosen the straps by pressing the red release button on the buckle. Always double-check that the straps are not twisted and lie flat against your child’s body. A correctly adjusted harness minimizes movement in a crash, maximizing the car seat’s protective features.
Re-Thread the Harness
As your child grows, you’ll need to re-thread the harness to maintain the correct shoulder strap height for optimal safety in the Safety 1st Grow and Go car seat. Locate the harness slots behind the car seat shell. Completely loosen all straps by pressing the red release button on the buckle. Remove the harness straps from their current slots.
Select the next set of slots upward, corresponding to your child’s shoulder level – straps should be at or just above the shoulders in rear-facing mode, and at or just below the shoulders when forward-facing. Re-insert the straps through the chosen slots, ensuring they are not twisted. Re-buckle the harness and tighten the straps until snug, verifying you cannot pinch any excess webbing. Always confirm secure re-threading before each journey, prioritizing your child’s protection.
Proper Harness Tightness
Achieving proper harness tightness is crucial for your child’s safety within the Safety 1st Grow and Go car seat. After securing the harness, grasp the straps at the child’s shoulders and attempt to pinch excess webbing at the collarbone. If you can pinch any slack, the harness is too loose and must be tightened. Continue tightening the straps until you can no longer pinch any webbing.

The harness should lie flat against your child’s chest and shoulders, without any twists or bunching. Ensure the chest clip is positioned at armpit level. A snug fit prevents excessive forward movement in a crash. Regularly check harness tightness throughout your trip, as straps can loosen with movement. Prioritize a secure fit for maximum protection during every ride.

Safety Features & Warnings
The Safety 1st Grow and Go incorporates side impact protection and energy-absorbing foam for enhanced safety. Always heed important warnings and check the expiration date.

Side Impact Protection
The Safety 1st Grow and Go car seat is engineered with robust side impact protection features designed to significantly enhance your child’s safety during a collision. This crucial safety component works by distributing the forces away from your child, minimizing the risk of injury to the head, neck, and torso.
Specifically, the car seat incorporates specially designed headrests and energy-managing side wings. These components work in tandem to cradle your child’s head and body, providing a protective cocoon in the event of a side impact. The structural integrity of the car seat shell itself also plays a vital role, acting as a strong barrier against intrusion.
It’s important to remember that while side impact protection is a critical feature, it’s just one aspect of overall car seat safety. Proper installation, correct harness usage, and adherence to all manufacturer guidelines are equally essential for maximizing your child’s protection.
Energy-Absorbing Foam
A key safety feature of the Safety 1st Grow and Go car seat is its strategically placed, energy-absorbing foam. This foam isn’t simply cushioning; it’s a vital component designed to manage and reduce the impact forces during a vehicle collision. It’s integrated throughout the car seat shell, particularly in the headrest and side wings, to provide comprehensive protection.
During a crash, this specialized foam compresses and deforms in a controlled manner, absorbing a significant portion of the kinetic energy. This absorption minimizes the force transmitted to your child, lessening the potential for serious injury. The foam works in conjunction with the car seat’s rigid shell and harness system to create a multi-layered safety approach.
Regular inspection of the foam is recommended to ensure it remains intact and hasn’t been compromised. Maintaining this feature is crucial for continued optimal safety performance throughout the car seat’s lifespan.
Important Safety Warnings
Prioritize your child’s safety by carefully reviewing these critical warnings before using the Safety 1st Grow and Go car seat. Always read the entire manual and adhere to all instructions. Never leave your child unattended in the car seat or vehicle. Ensure the car seat is properly installed and the harness is securely fastened on every trip.
Crucially, always use the correct buckle slots – the first or second when rear-facing – and any slot when forward-facing. Do not modify the car seat in any way, as this could compromise its safety features. Regularly inspect the seat for damage and discontinue use if any issues are found.
Remember the car seat has an expiration date; do not use it beyond this date. Keep the manual readily available for future reference and always register your car seat with Safety 1st to receive important safety updates and recall notifications.
Expiration Date and Seat Lifespan
Understanding the lifespan of your Safety 1st Grow and Go car seat is paramount for continued safety. Car seats, like all safety equipment, degrade over time due to material breakdown and potential wear and tear. This seat has a defined expiration date, typically six to ten years from the date of manufacture – not the date of purchase.
Locate the manufacture date on the car seat itself; the user guide’s effective date (e.g., 6/8/2015 or 9/4/2019) must be equal to or precede this date. Do not use the car seat if it has expired.
Factors like sun exposure, temperature fluctuations, and general use contribute to this degradation. Even if the seat appears undamaged, its structural integrity may be compromised. Discontinue use upon expiration and responsibly dispose of the car seat, ensuring it cannot be used again for child safety.

Maintenance & Cleaning
Regular cleaning and inspection are vital for maintaining the Safety 1st Grow and Go car seat’s functionality. Keep covers and straps clean, and promptly address any damage.
Cleaning the Car Seat Cover

To clean the Safety 1st Grow and Go car seat cover, begin by removing it from the car seat frame, carefully following the instructions detailed in the user manual. Most covers are machine washable, but always check the label first for specific washing instructions – typically, a gentle cycle with cold water is recommended.
Use a mild detergent and avoid bleach or harsh chemicals, as these can damage the fabric and potentially compromise the cover’s integrity. After washing, allow the cover to air dry completely before reattaching it to the car seat. Do not use a dryer, as heat can cause shrinkage or damage.
For minor spills or stains, spot cleaning with a damp cloth and mild soap may suffice. Ensure all soap residue is removed before allowing the cover to dry. Regularly cleaning the cover helps maintain hygiene and extends the lifespan of your car seat.
Cleaning the Harness Straps
Maintaining clean harness straps is crucial for your child’s safety and hygiene with the Safety 1st Grow and Go car seat. Avoid machine washing the harness straps, as this can damage their integrity and affect their performance in a crash.
Instead, clean them manually using a damp cloth and mild soap. Gently scrub the straps to remove dirt, spills, or stains, paying close attention to areas that come into direct contact with your child. Rinse thoroughly with a clean, damp cloth to remove all soap residue.
Allow the harness straps to air dry completely before using the car seat. Do not use a dryer or direct heat, as this can weaken the straps. Regularly cleaning the harness straps helps prevent the buildup of bacteria and ensures a comfortable and safe ride for your little one. Inspect straps for wear after cleaning.
Inspecting for Damage
Regularly inspecting your Safety 1st Grow and Go car seat for damage is paramount to ensuring continued safety. Before each use, carefully examine the entire car seat, including the shell, harness, buckle, LATCH connectors, and vehicle belt paths.
Look for any signs of cracks, breaks, or wear and tear. Pay close attention to areas that experience stress during a crash, such as the impact zones and harness webbing. Check the manufacture date; the user guide must be equal to or exceed it.
If you discover any damage, discontinue use immediately and contact Safety 1st for assistance. Do not attempt to repair the car seat yourself, as this could compromise its safety features. A damaged car seat may not provide adequate protection in the event of a collision, potentially endangering your child. Prioritize safety through consistent inspection.

Troubleshooting
Common issues include installation difficulties, harness problems, and buckle malfunctions. Refer to this guide for solutions; always prioritize a secure fit and proper function.
Difficulty Installing the Car Seat
Encountering trouble securing the Safety 1st Grow and Go? Double-check the vehicle’s seat compatibility and ensure the car seat is level. Verify you’re using the correct installation method – either LATCH or the vehicle seat belt – for the chosen mode (rear-facing, forward-facing, or booster).
If using LATCH, confirm the connectors are firmly attached to the vehicle’s anchor points and that the tether strap (when applicable) is properly engaged. When utilizing the vehicle seat belt, ensure it’s locked and threaded correctly through the car seat’s belt path.
A common mistake is not tightening the installation sufficiently. Apply firm pressure while tightening the LATCH strap or vehicle seat belt to eliminate excessive movement. If issues persist, consult your vehicle’s owner’s manual for specific installation guidance or seek assistance from a certified Child Passenger Safety Technician (CPST).
Harness Issues
Experiencing difficulties with the Safety 1st Grow and Go harness? Ensure the harness straps are not twisted and are correctly positioned over your child’s shoulders. Verify the harness height is adjusted to the appropriate slot, aligning with or just at shoulder level for rear-facing, and at or above shoulder level for forward-facing.
If the buckle isn’t clicking easily, check for obstructions like fabric or debris. A common issue is difficulty tightening the harness; ensure the tightening strap is fully engaged and you’re pulling firmly. Remember to always use the first or second buckle slots when the car seat is rear-facing.
If re-threading the harness is needed, carefully follow the instructions in the manual to avoid incorrect installation. Never add padding or aftermarket products to the harness.
Buckle Problems
Encountering issues with the Safety 1st Grow and Go buckle? First, inspect the buckle for any visible damage or debris that might be preventing proper closure. Ensure the buckle tongue is fully inserted into the buckle receiver with a clear “click” sound, confirming a secure connection.
If the buckle releases too easily, double-check that it’s fully locked. Sometimes, a slight adjustment of the harness straps can resolve this. When rear-facing, always utilize the first or second buckle slots for optimal safety. For forward-facing, any slot is acceptable.
If the buckle remains problematic, do not use the car seat and contact Safety 1st customer support for assistance. Never attempt to repair the buckle yourself, as this could compromise its functionality and your child’s safety.