Britax Allegiance Convertible Car Seat

1. Introduction

This manual provides essential information for the proper installation, use, and maintenance of your Britax Allegiance 3 Stage Convertible Car Seat. Please read all instructions carefully before using the car seat to ensure the safety and comfort of your child. Keep this manual in a safe place for future reference.

Image: The Britax Allegiance Convertible Car Seat, showcasing its design and fabric.

2. Safety Information

The Britax Allegiance car seat is designed with advanced safety features to protect your child. Always adhere to the following guidelines:

• Always secure your child in the car seat using the 5-point harness system.
• Ensure the car seat is correctly installed in your vehicle according to the instructions for either rear-facing or forward-facing mode.
• Never leave your child unattended in the car seat.
• Do not use the car seat if it has been involved in a moderate to severe crash, even if there is no visible damage.
• Register your car seat to receive important safety updates and recall information.

Image: The car seat with callouts for Side Impact Protection, 5-Point Safety Harness, and Premium Quick-Push LATCH Connectors.

Image: The car seat with callouts for Nap-Friendly Padding & Fabrics, High Strength Steel Frame, and 3-Position Recline.

3. Setup and Installation

The Britax Allegiance car seat supports both rear-facing and forward-facing installations. Refer to your vehicle's owner's manual for specific car seat installation instructions and locations.

3.1. Rear-Facing Installation (5-40 lbs)

For infants and toddlers weighing 5 to 40 pounds, the car seat must be installed in the rear-facing position. Ensure the child's head is at least 1 inch below the top of the car seat shell.

3.2. Forward-Facing Installation (20-65 lbs)

For children weighing 20 to 65 pounds and with a standing height of 49 inches or less, the car seat can be installed in the forward-facing position. The top of the child's ears must be below the top of the car seat's headrest.

Image: Two car seats illustrating the Rear-Facing (5-40 lbs) and Forward-Facing (20-65 lbs) positions.

3.3. LATCH Connectors and Built-In Lock-Offs

The car seat features push-button LATCH connectors and built-in lock-offs for easy and secure installation using your vehicle's LATCH system or seat belt. Always ensure a tight fit with less than 1 inch of movement at the belt path.

Image: The back of the car seat highlighting the Patented V-Shaped Tether and Built-In Lock-Offs for easy installation.

3.4. Recline Positions

The car seat offers multiple recline positions to ensure comfort and proper angle for your child, especially in the rear-facing mode. Adjust the recline using the lever located at the front of the seat base.

4. Operating the Car Seat

4.1. Securing Your Child

Place your child in the car seat. Bring the harness straps over their shoulders and buckle the chest clip and crotch buckle. Ensure the harness straps are snug against your child's body, with no slack. The chest clip should be positioned at armpit level.

4.2. Adjusting the Headrest and Harness

The 10-position quick-adjust headrest and harness system allows you to easily adjust the harness height without rethreading. Simply squeeze the adjustment handle at the top of the headrest and slide it up or down to the appropriate position. The harness straps should be at or just below the child's shoulders for rear-facing, and at or just above the shoulders for forward-facing.

Image: Illustration of the 10-Position Quick-Adjust Headrest & Harness mechanism.

4.3. Removable Body Pillow and Flip-Forward Buckle

The car seat includes a removable body pillow for smaller newborns to ensure a snug fit. The flip-forward buckle design helps keep the buckle out of the way when placing your child in the seat.

Image: The car seat with callouts for Easy to Remove Cover, Flip-Forward Buckle, and Removable Body Pillow.

4.4. Child Placement Examples

Image: An infant comfortably secured in the rear-facing Britax Allegiance car seat.

Image: A toddler comfortably secured in the forward-facing Britax Allegiance car seat.

5. Maintenance

5.1. Cleaning Instructions

The car seat cover is removable for easy cleaning. For best results, hand wash the fabric cover with mild soap and cold water. Line dry only. Do not machine wash, bleach, iron, or dry clean, as this may compromise the fabric's safety properties.

Wipe down the plastic and metal parts of the car seat with a damp cloth and mild soap. Do not use abrasive cleaners or solvents.

6. Troubleshooting

If you encounter issues with your Britax Allegiance car seat, consider the following common solutions:

• Loose Installation: Re-check the LATCH connectors or seat belt path. Apply firm pressure to the car seat while tightening the straps to remove slack. Ensure the car seat does not move more than 1 inch side-to-side or front-to-back at the belt path.
• Harness Difficulty: If the harness is difficult to tighten or loosen, check for twists in the straps or obstructions in the harness adjuster mechanism. Ensure the harness is routed correctly through the appropriate slots.
• Child Discomfort: Verify that the harness is adjusted to the correct height for your child's shoulders and that the chest clip is at armpit level. Ensure the recline angle is appropriate for their age and weight.

For persistent issues, refer to the full product manual or contact Britax customer support.

7. Specifications

Key specifications for the Britax Allegiance Convertible Car Seat (Model E1C147Z):

Image: Diagram showing the dimensions of the Britax Allegiance Car Seat: 26" H x 18.5" W x 21" D.

8. Warranty and Support

Britax provides a limited warranty for its car seats. For specific warranty details, registration, or customer support, please visit the official Britax website or contact their customer service department. Keep your proof of purchase for warranty claims.