Diono RXT Car Seat Manual

The Diono RXT is a premium 3-in-1 convertible car seat designed for children from 5 to 120 pounds. It features steel alloy frame construction, superior side impact protection, adjustable head support, multiple recline positions, fold-flat design for travel, and FAA-approved for aircraft use. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Adjustments 6. Proper Harnessing 7. Recline Positions 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Steel alloy frame, adjustable headrest, multiple recline positions, fold-flat design, premium fabric covers.

Feature	Description
Steel alloy frame	For maximum safety and durability
Adjustable headrest	12-position adjustable headrest with SafeStop technology
Recline positions	Multiple recline positions for comfort
Fold-flat design	For easy storage and travel
FAA approved	Certified for aircraft use
Premium fabric	Machine washable, breathable fabric covers
Side impact protection	Energy-absorbing foam and deep wings
Harness system	5-point harness with quick-adjust harness
Installation	LATCH system and seat belt compatible
Weight capacity	5-120 pounds (rear-facing: 5-50 lbs, forward-facing: 20-90 lbs, booster: 50-120 lbs)

Installation

Unpack and inspect contents. Read all instructions before installation.

Rear-facing installation: For children 5-50 pounds. Use recline positions 1-3.
Forward-facing installation: For children 20-90 pounds. Use recline positions 4-6.
Booster mode: For children 50-120 pounds. Remove harness and use vehicle seat belt.
LATCH installation: Use lower anchors for secure installation up to 65 pounds.
Seat belt installation: Use vehicle seat belt when LATCH weight limit is exceeded.

WARNING! Always ensure car seat is securely installed. Check for tight fit (less than 1 inch movement at belt path).

First-Time Setup

Proper setup ensures maximum safety and comfort.

Adjust harness height: Ensure harness straps are at or below shoulders for rear-facing, at or above for forward-facing.
Set recline angle: Use built-in angle indicators for proper recline position.
Install harness: Thread harness through appropriate slots based on child's size.
Adjust headrest: Position headrest to align with child's ears.
Test installation: Firmly pull on car seat to ensure less than 1 inch movement.

CAUTION! Never install in front of active airbags. Always follow vehicle manufacturer guidelines.

Specifications

Weight Range: 5-120 pounds
Height Range: Up to 57 inches
Seat Dimensions: 17"W x 19"D x 27"H
Weight: 26.5 pounds
Materials: Steel alloy frame, energy-absorbing foam, premium fabric
Harness Slots: 12 adjustable positions
Recline Positions: 6 positions
Certifications: FMVSS 213, FAA approved
Warranty: Limited 10-year warranty

Controls and Adjustments

Easy-to-use controls for proper adjustment and comfort.

Headrest Adjustment: Lift headrest adjustment handle and slide to desired position. Ensure proper alignment with child's ears.

Harness Adjustment: Pull quick-adjust harness strap to tighten. Press harness release button and pull straps to loosen.

Recline Adjustment: Pull recline adjustment handle while applying pressure to seat base. Use angle indicators for proper positioning.

LATCH Adjustment: Press LATCH adjustment button and pull straps to tighten. Ensure secure connection to vehicle anchors.

Proper Harnessing

Correct harnessing is critical for child safety.

Position child: Ensure child is sitting upright with back flat against seat.
Thread harness: Place harness straps through appropriate slots.
Buckle harness: Insert buckle tongues into crotch buckle until click is heard.
Tighten harness: Pull quick-adjust strap until harness is snug.
Check fit: Harness should be snug - you should not be able to pinch excess webbing.
Chest clip: Position chest clip at armpit level.

Tip: Always perform pinch test to ensure proper harness tightness.

Recline Positions

Proper recline ensures comfort and safety in different modes.

Rear-facing positions: Use positions 1-3 for infants and smaller children.
Forward-facing positions: Use positions 4-6 for older children.
Angle indicators: Use built-in angle indicators for proper installation.
Vehicle compatibility: Check vehicle seat contours for proper recline fit.

WARNING! Always use appropriate recline position for child's age and weight. Improper recline can compromise safety.

Care & Cleaning

Proper maintenance ensures longevity and cleanliness.

Remove covers according to instructions. Machine wash cold on gentle cycle. Air dry only - do not machine dry. Spot clean harness straps with mild soap and water. Do not bleach or use harsh chemicals.

CAUTION! Never submerge car seat frame or harness in water. Do not use abrasive cleaners.

Regulatory Information

FMVSS 213 compliant. FAA approved for aircraft use. Meets or exceeds all federal safety standards. This car seat is certified for use in motor vehicles and aircraft. Copyright © Diono LLC. For support, visit www.diono.com or contact 1-855-463-4666.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Car seat moves more than 1 inch	Loose installation	Reinstall using LATCH or seat belt; ensure tight fit at belt path.
Harness difficult to tighten	Twisted straps	Check for twisted harness straps; straighten and retighten.
Child slouching in seat	Improper recline	Adjust recline position; ensure proper angle for child's size.
Headrest not adjusting	Obstruction	Check for fabric obstruction; lift adjustment handle fully.
Buckle difficult to fasten	Debris in buckle	Clean buckle mechanism; ensure no food or debris present.

Service: 1-855-463-4666; www.diono.com