Introduction
The Evenflo All4One DLX 4-In-1 Convertible Car Seat is designed to provide safety and comfort for your child through various stages of growth. This versatile car seat converts from a rear-facing harness to a forward-facing harness, and then to a high-back booster and a no-back booster, accommodating children from infancy to big kid. It incorporates advanced features like the EasyClick LATCH system for secure installation and SensorSafe technology for real-time safety alerts. This manual provides essential information for proper installation, operation, maintenance, and understanding the features of your Evenflo All4One DLX car seat.

Image: Front view of the Evenflo All4One DLX 4-In-1 Convertible Car Seat in Kingsley Black.
Key Features
- 10 Years of Use: Converts from rear-facing harness (4-40 lbs) to forward-facing harness (22-65 lbs), high-back booster (40-120 lbs), and no-back booster (40-120 lbs).
- EasyClick LATCH System: Provides a secure installation that is 3x tighter than competitive LATCH systems, ensuring quick and correct securing.
- SensorSafe Technology: Sends real-time alerts to your phone for unexpected chest clip unbuckling, unsafe temperature, child unattended, and child seated too long.
- GREENGUARD Gold Certified: Meets low chemical emissions standards for a healthier environment for your child.
- Quick Clean Cover: Removable and machine washable fabric for easy cleaning.
- Side-Impact Technology: Helps absorb energy in the event of a collision.
- Live Video Installation Support: Access to certified car seat safety technicians for installation assistance.
Setup & Installation
Proper installation is crucial for your child's safety. The Evenflo All4One DLX features the innovative EasyClick LATCH system designed for a secure and straightforward installation process.
Using the EasyClick LATCH System
The EasyClick LATCH system allows for a rock-solid installation by ratcheting the LATCH connectors to achieve a secure fit. This system is designed to be 3x tighter than traditional LATCH systems, making installation quicker and more reliable.
- Locate the LATCH connectors on the car seat.
- Attach the LATCH connectors to your vehicle's lower anchors.
- Rachet the EasyClick LATCH strap until the car seat is securely installed and moves less than one inch side-to-side and front-to-back at the belt path.
- Always refer to your vehicle's owner's manual and the car seat's instruction manual for specific LATCH weight limits and installation guidelines.

Image: Illustration of the EasyClick LATCH system, highlighting its 3x tighter installation capability.

Image: Close-up view of a hand engaging the EasyClick LATCH mechanism for secure installation.
For personalized assistance with installation, Evenflo offers live video support with a certified car seat safety technician. Refer to the contact information section for details on how to access this service.
Operating Modes
The Evenflo All4One DLX is designed to adapt to your child's growth, offering four distinct modes of use:
- Rear-Facing Harness: For infants and toddlers weighing 4-40 lbs and 17-40 inches tall.
- Forward-Facing Harness: For children weighing 22-65 lbs and 28-49 inches tall, at least 2 years old.
- High-Back Booster: For children weighing 40-120 lbs and 44-57 inches tall, at least 4 years old.
- No-Back Booster: For children weighing 40-120 lbs and 44-57 inches tall, at least 4 years old.

Image: Visual guide illustrating the four convertible modes of the Evenflo All4One DLX car seat: Rear-Facing Harness, Forward-Facing Harness, High-Back Booster, and No-Back Booster.
SensorSafe Technology
The integrated SensorSafe technology provides an added layer of safety by connecting to your smartphone. It monitors critical conditions and sends alerts to help prevent common car seat-related incidents.
- Unexpected Chest Clip Unbuckling: Alerts you if your child unbuckles the chest clip during travel.
- Unsafe Temperature: Notifies you if the vehicle's temperature becomes too hot or too cold for your child.
- Child Unattended in Car: Reminds you if a child is still in the car after the vehicle is turned off.
- Child Seated Too Long: Prompts you to take a break if your child has been seated for an extended period.

Image: A child in the car seat with the SensorSafe chest clip, showing a smartphone display with SensorSafe alerts.
Maintenance
Keeping your car seat clean is essential for hygiene and longevity. The Evenflo All4One DLX features a Quick Clean Cover for easy maintenance.
Cleaning Instructions
- Quick Clean Cover: The seat pad and head/body pillows are designed for easy removal and are machine washable. Use cold water and a gentle cycle. Tumble dry on low heat or air dry. Do not use bleach.
- Harness Straps: Wipe harness straps with a damp cloth. Do not machine wash or submerge harness straps in water, as this can weaken the webbing.
- Plastic and Metal Parts: Wipe plastic and metal parts with a soft, damp cloth and mild soap. Do not use abrasive cleaners or solvents.

Image: A person placing the car seat cover into a washing machine, demonstrating the ease of cleaning.

Image: A hand demonstrating the removal of the Quick Clean Cover from the car seat.
Safety Features
Evenflo prioritizes your child's safety, and the All4One DLX car seat is equipped with features designed to exceed federal safety standards.
- Side-Impact Technology: Integrated technology helps to absorb energy and protect your child in the event of a side-impact collision.
- GREENGUARD Gold Certified: This certification ensures the product has met rigorous chemical emissions standards, contributing to healthier indoor air quality.
- Rigorous Testing: The car seat is structural integrity tested at energy levels approximately 2x the federal crash test standard, and is side-impact tested, rollover tested, and temperature tested.

Image: A parent securing a child in the car seat, highlighting the side-impact protection features.

Image: A family outdoors with the car seat, featuring the GREENGUARD Gold Certified logo, emphasizing environmental safety.
Troubleshooting
If you encounter any issues with your Evenflo All4One DLX car seat, please refer to the following general troubleshooting advice. For detailed solutions, always consult the full user manual or contact customer support.
- Installation Difficulty: Ensure the LATCH system is correctly engaged and ratcheted. Check for any obstructions. Verify the car seat is installed at the correct recline angle for your child's age and weight. Utilize the live video installation support if needed.
- Harness Adjustment Issues: Ensure the harness straps are not twisted and are routed correctly through the appropriate slots for your child's height. The harness should be snug, with no slack.
- SensorSafe Not Connecting/Alerting: Check your smartphone's Bluetooth connection and ensure the SensorSafe app is installed and updated. Verify the SensorSafe chest clip is properly buckled.
- General Malfunction: Do not attempt to repair the car seat yourself. Contact Evenflo customer service for guidance or replacement parts.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 23.5 x 18.75 x 24.75 inches |
| Item Model Number | 39312441COM |
| Minimum Weight Recommendation | 4 Pounds |
| Maximum Weight Recommendation | 120 Pounds |
| Minimum Height Recommendation | 17 Inches |
| Maximum Height Recommendation | 57 Inches |
| Material Type | Polyester |
| Material Composition | 100% Polyester |
| Number of Reclining Positions | 12 |
| Harness Type | 5-Point |
| Item Weight | 21.6 pounds |
| Color | Kingsley Black |
| Installation Type | Latch |
| Additional Features | Live Video Installation Support, Machine Washable Fabric, Parent Link Customer Service, SensorSafe Technology, Side-impact technology |

Image: Diagram showing the key dimensions (height, width, depth) of the Evenflo All4One DLX car seat.
Support & Warranty
For further assistance, product registration, or warranty information, please contact Evenflo Customer Service. Evenflo provides Parent Link Customer Service to support you with any questions or concerns regarding your car seat.
You can also refer to the official User Manual PDF for comprehensive details and safety warnings:
Download Official User Manual (PDF)
Always read all instructions and warnings on the product, product labels, and instruction manuals before use. Consult your vehicle owner's manual to determine proper placement of child restraint in your vehicle and familiarize yourself with your vehicle's components.





