radian® 3 RXT

READ INSTRUCTION MANUAL

before using this child restraint

radian

3 RXT

All-in-one convertible

car seat

Instruction Manual

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WELCOME TO THE DIONO FAMILY!

BEFORE YOU BEGIN

Certiﬁcation

Safe Use Guide

Safe Use Checklist

Warnings & Safe Practices

Parts Listing

Vehicle Seating Locations

Top Tether

First Setup

REAR-FACING INSTALLATION

Rear-Facing Checklist

LATCH installation

Lap-shoulder belt installation

Lap Installation

FORWARD-FACING INSTALLATION

Forward-Facing Checklist

LATCH installation

Lap-shoulder belt installation

Lap Installation

BOOSTER MODE INSTALLATION

Securing Your Child, Harness Setup & Adjustment

Care and Maintenance

Belt Locking Clip, Safe Stop and Lap Belt Cushion

Comfort Features - Adjusting Headrest

Harness Removal & Replacement

Aircraft Installation

Infant Insert, Expandable Side Wings, and Cupholder Use

WARRANTY

CONTENTS BEFORE YOU BEGIN

7-8

9-10

11-15

16-17

18-23

24-25

26-28

29-37

30-31

32-35

36-37

38-49

39-40

41-45

46-49

50-51

52-55

56-57

58-60

62-63

65-66

67-69

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HELLO!

Please take a moment to ﬁll out the prepaid registration card

attached to the harness of the seat and mail it in today or register

online at: us.diono.com/register

Child restraints could be recalled for safety reasons. You must regis-

ter this restraint to be reached in a recall. Send your name, address,

e-mail address if available, and the restraint’s model number and

manufacturing date to:

Diono

PO Box 77129

Seattle, WA 98177

or call 1-855-463-4666 or register online at: us.diono.com/register

For recall information, call the U.S. Government’s Vehicle Safety

Hotline at 1-888-327-4236 (TTY: 1-800-424-9153), or go to

http://www.NHTSA.gov.

For future reference, in the case of a change of address. Please take a

moment to ﬁll out the following information:

This information can be found either on the registration card or on

the manufacturing label located on the seat.

Model Number

Serial Number :

Manufactured in (date) :

Purchase date:

Our Story

Time. It goes so fast...

Who would have thought that nearly two decades have passed since we ﬁrst

stepped out into the world and started a business dedicated to family travel.

Well the world has changed a lot, but we’re proud to say that we haven’t,

(sure we’ve grown up), but we’re still as passionate about what we do today as

we were back then.

Our story is ‘Made of Seattle’, a city like no other. This is a place where creative

minds and innovators rub shoulders within a landscape of adventure; a place,

With a love for design and an understanding of modern parenting, we strive to

create amazing products, so that you and your little ones can celebrate the joy

in every journey.

People who own Diono products can be found in all four corners of the big

blue green ball, we all call home. Some are fans and followers, some are

supporters, tweeters, social media magicians, miracle moms and devoted dads.

“lol”, we love you all.

Without your passion, pictures, words and stories, we would never hear your

voice. So tell us about your patch of grass, and join in the hustle

and bustle at www.diono.com

@diono@diono dionoUSA

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SAFE USE GUIDE

This child restraint system conforms to all

applicable Federal Motor Vehicle Safety

Standards (FMVSS 213).

CERTIFICATION

This child restraint is certiﬁed for use in aircraft

only when in harness mode.

This child restraint is not certiﬁed for use in air-

craft when used in booster mode. Aircraft seats

do not have shoulder belts which are required

for use with this booster.

Diono and the Federal Aviation Administration

(FAA) strongly urge you to secure your child in

a child restraint system (CRS) or device for the

duration of your ﬂight. Please contact the airline

for their speciﬁc policies.

YOUR CHILD’S SAFETY DEPENDS ON YOU.

DEATH OR SERIOUS INJURY CAN OCCUR.

No car seat can guarantee protection from

injury in every situation, but proper use helps

to reduce the risk of serious injury or death.

Carefully read and understand all instructions

and warnings in this manual. Your child’s

safety depends on you knowing how to setup,

install and use this Child Restraint properly.

Choose the correct mode of use for your

child, depending on their weight.

This Child Restraint is designed for use only

with children who weigh between 5 and

120 lbs (2.3 and 54 kg) and whose height is

57 inches (144 cm) or less in the following

modes.

WARNING – FAILURE TO FOLLOW THESE

INSTRUCTIONS AND THE PRODUCT

LABELS CAN RESULT IN SERIOUS INJURY

OR DEATH TO YOUR CHILD.

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SAFE USE GUIDE

DO NOT place this child restraint rear-facing in

a vehicle seating location with an active frontal

air bag, unless the air bag is turned o.

Choose the proper Child Restraint Belt Path

1. REAR-FACING SECTION

2. FORWARD-FACING SECTION

3. BOOSTER MODE SECTION

• Rear-Facing: 5-45 lbs (2.3-20 kg) and whose height is

44 inches (112 cm) or less.

• Forward-Facing: 20-65 lbs (9.1-29.5 kg) and whose

height is 57 inches (144 cm) or less.

• Booster Use: 50-120 lbs. (22.7-54 kg) and whose

height is 57 inches (144 cm) or less.

• Infants who weigh less than 20 lbs (9 kg) and are

under 1 year old, MUST use this car seat Rear-Facing.

For newborn infants, you must consult the infant’s

doctor before using this Child Restraint. A newborn

infant may have diculty breathing or have other

medical problems when placed in a seated position.

Before installing this Child Restraint in a vehicle, be

sure to also check the vehicle owner’s manual for

information on proper installation.

SAFE USE CHECKLIST

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ALWAYS install this Child Restraint in the back seat.

The back seat is the safest place for children 12 and

under. See your vehicle owner’s manual for Child

Restraint installations and instructions.

According to accident statistics, children are

safer when properly restrained in the rear seating

positions than in the front seating positions.

Child restraint systems should be securely belted

to the vehicle, even when they are not occupied.

In a crash an unsecured child restraint system may

injure other occupants.

Rear-Facing: Harness straps MUST be at or just

below the child’s shoulders. Top of head must be 1.5

inches below the headrest ears.

Forward-Facing: Harness straps MUST be just above

the child’s shoulders. Top of child’s ears must below

top of headrest. (If needed, adjust the headrest by

positioning it accordingly by sliding it up or down.)

Booster Mode: Child MUST be secured using ONLY

the vehicle Lap and Shoulder Belt. Child MUST weigh

at least 50 lbs, with shoulders positioned at the 4th

slot and remain in this position for the entire ride.

(If needed, adjust the headrest by positioning it

accordingly by sliding it up or down.)

SAFE USE CHECKLIST

Choose a suitable location for this car seat

in your vehicle. REVIEW VEHICLE SEATING

LOCATIONS.

Install this car seat tightly in your vehicle.

Grab the sides of the seat where the vehicle

seat belt or LATCH strap is and slide the car

seat side-to-side and front-to-back. If the

seat moves less than 1 inch (2.5 cm), it is tight

enough.

Secure harness snug and ﬂat on your child.

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• NEVER leave Child Restraint unsecured in your

vehicle even when it is unoccupied. It could injure

other occupants in a sudden stop or crash.

• DO NOT use any accessories, inserts or products not

included with this Child Restraint, unless approved by

Diono. Items not tested with this child restraint could

injure your child.

• DO NOT use this child restraint system if it has been

in a vehicle accident. You MUST replace this Child

Restraint if it has been involved in a crash, even if you

cannot see visible damage. A damaged Child Restraint

may not protect your child in a future crash.

• DO NOT modify your Child Restraint.

• NEVER remove harness from Child Restraint without

following the proper removal and installation

instructions available from Diono.

com or call 1-855-463-4666.

• NEVER install in rear facing, side facing or on the back

of a folded down vehicle seat.

• ALWAYS secure this Child Restraint with the vehicle’s

child restraint anchorage system (LATCH) if available

OR the vehicle seat belt.

• DO NOT use the lower anchors of the child restraint

anchorage system (LATCH system) to attach this child

restraint Rear-Facing when restraining a child weighing

more than 35lbs (15.8 kg) or Forward-Facing when

restraining a child weighing more than 40lbs (18 kg)

with the internal harnesses of the child restraint. The

top of child’s head should not be less than 1.5 inches

from the top of the headrest when in its highest

position.

• ALWAYS use the top tether strap on this child restraint

when installed Forward-Facing, if a tether anchor is

available.

• NEVER use Child Restraint in a vehicle seating

position where it cannot be secured tightly.

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EXPIRATION:

• DO NOT use the child restraint if any part is

damaged or broken, expired (over 10 years from date

of manufacture), missing instructions, missing parts,

or if the straps are cut, frayed, or damaged in any way.

Call 1-855-463-4666 to ﬁnd out if the damaged part

or parts can be replaced.

SAFE PRACTICES

• DO NOT leave loose objects, such as books, bags,

etc., in the back of the vehicle. In the event of a sharp

turn, sudden stop, or crash, loose objects can be

thrown around and possibly cause serious injury to

vehicle occupants.

• ALWAYS check all surfaces of restraint before

securing your child. In warm weather, child restraints

can become very hot. Do not allow children to play

with vehicle seat belts.

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PARTS LISTING

1. LATCH Storage

2. Top Tether

3. Safe Stop

4. Belt Locking Clip

5. Belt Storage Pocket

6. LATCH Routing Pocket

7. Instruction Manual Storage

8. Harness Straps

9. Harness Pads

10. Chest Clip

11. Buckle

12. Buckle Pad

13. Expandable Sides

14. Harness Adjuster

15. Harness Adjuster Strap

16. Detachable rear-facing base

17. Rear-facing top tether connecting strap

18. Cup holder

19. Infant Insert

20. Lap belt cushion

radian

3 RXT

PARTS AND FEATURES

radian

3 RXT

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VEHICLE SEATING LOCATIONS

WHAT IS LATCH?

Most vehicles manufactured after September 1, 2002

are equipped with LATCH (Lower Anchors and Tethers

for CHildren). Check your vehicle owner’s instruction

manual to determine LATCH lower anchor compatible

seating positions. Some vehicles owner’s manuals use

the term “ISOFIX” instead; LATCH can also be used in

vehicle seating systems that are equipped with ISOFIX.

Look for the LATCH symbol that may be visible by the

crease of the rear seat.

WARNING: DO NOT USE the LATCH lower anchor

belts to attach this Child Restraint rear facing when

restraining a child weighing over 35 lbs (15.8 kg) or

forward facing when restraining a child weighing over

40 lbs (18 kg).

DO NOT install using both the lower anchorage

connectors and the vehicle seat belt at the same time.

VEHICLE SEATING LOCATIONS

The safest seating position is one that works best for

your speciﬁc car seat, family and vehicle model.

When determining whether the Diono RXT Car Seat

can be used with lower anchors in the rear center

seating position, it is critical that you refer to your

vehicle owner’s instruction book. If the RXT does not

install best in the rear center seating location, it is

recommended to move to one of the outboard seating

positions.

Before installing this child restraint you must determine

the method of installation and the best vehicle seating

position for that method. This child restraint can be

installed either using LATCH or the Vehicle Seat Belt.

DO NOT install using both methods at the same time.

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VEHICLE SEATING LOCATIONS

Install Child Restraint Correctly

NEVER PLACE THIS CHILD RESTRAINT REAR-FACING

IN A VEHICLE SEATING LOCATION WITH AN ACTIVE

FRONTAL AIR BAG, UNLESS THE AIR BAG IS TURNED

OFF. If the airbag inﬂates, it can cause serious injury

or death to your child. For vehicles with side air bags,

refer to your vehicle owner’s manual for information

on your child restraint installation.

Take care to secure the child properly. Snugly adjust

the belts provided with this child restraint around your

child. A snug strap should not allow any slack. It lies

in a relatively straight line without sagging. It does not

press on the child’s skin or push the child’s body into

an unnatural position. Child may become tangled in

harness straps and suocate or strangle.

• ALWAYS check to ensure buckle is securely latched.

• NEVER leave child unattended. Do not allow

children to play in or around the Child Restraint.

• ALWAYS keep child properly secured in harness

whenever child is in Child Restraint.

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VEHICLE SEATING LOCATIONS

The following types of Vehicle Belts CANNOT BE

USED with your child restraint.

If any of the belt types listed below are in the chosen

seating position, you MUST choose another seating

position or use LATCH if available.

Please refer to your Vehicle Owners Manual for

speciﬁc information about seat belts and their use

with Child Restraints.

1. Motorized (Automatic) Vehicle Belts.

2. Dual Retractor Lap/Shoulder Belts

3. Non-Locking (ELR) Lap Belts

4. Inﬂatable Seat Belts *

5. Door Mounted Vehicle Belts

* ONLY Ford Inﬂatable seat belts are allowed to be

used with this Child Restraint. No other inﬂatable seat

belts have been tested with this Child Restraint.

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TOP TETHER

WHAT IS TOP TETHER?

A tether is designed to reduce movement of a rear-

facing and forward-facing child restraint in a crash and

aids in the achievement of a tight installation.

Vehicle tether locations can be found in many

locations within the vehicle. Some of the typical

locations are shown here. Please refer to your vehicle

owner’s manual for exact locations, requirements, and

anchor identiﬁcation points.

WARNING: Rear-facing Top Tether connector strap is

ONLY to be used in rear-facing installations.

1. Locate the track of vehicle seat that is bolted directly

to vehicle frame.

2. Wrap tether connecting strap around the track, and

thread metal ‘D” ring through the loop at the end of the

tether connecting strap. Pull strap to form a knot.

3. Now, use metal ‘D’ ring as an anchorage point for

top tether metal hook.

Rear -Facing Top Tether Installation

FLOOR

OF VEHICLE

REAR

SHELF

BACK

WALL

BACK

OF SEAT

FLOOR

OF VEHICLE

Forward-Facing Top Tether Installation

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UNFOLDING AND FOLDING:

1. Place car seat on its back on a ﬂat surface and

unfasten red carry strap from the bottom. Be sure the

harness adjuster moves freely and is not locked within

the bottom of the seat.

2. Rotate bottom until your hear it ‘click’, this conﬁrms

the car seat is locked for use.

3. Check proper operation - Pull harness adjusting

strap until harness begins to tighten. If it does not

tighten freely, check the belt path on the back of the

seat bottom is clear from obstruction. If necessary,

unfold seat by releasing the levers as shown and

repeat the above steps.

4. Tuck the red strap through the harness slot and store

behind the cover.

5. To fold, release lever shown and secure with red

strap.

FIRST SETUP

INITIAL SETUP

CLICK

Folding

release

lever

INITIAL SETUP

1. Place Your Child in the Seat

Make sure their back is ﬂat against the car seat back.

(This can be done in or out of the car). Avoid bulky or

heavy clothing because they will prevent the harness

straps from being tightened properly at ﬁrst ﬁtment.

2. Place Harness Straps Over Child’s Shoulders and

Buckle

You will hear a “click” when buckle tongues are

securely attached. Pull up on each buckle tongue to

make sure it is securely attached.

3. Be Sure the Harness Straps Are at the Proper Height

Rear-Facing: Harness straps MUST be at or just below

the child’s shoulders. Top of head must be 1.5 in. below

the headrest ears.

Rear-Facing

(Harness AT or just below shoulders)

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INITIAL SETUP

REAR FACING

installation instructions

REAR FACING FORWARD FACING

BOOSTER MODE

Forward-Facing: Harness straps MUST be just above

the child’s shoulders. Top of child’s ears below top of

headrest. (If needed, adjust the headrest by positioning

it accordingly by sliding it up or down.)

Check all installation conﬁgurations before discarding

the box. Diono cannot guarantee proper ﬁt in all

vehicles.

Forward-Facing

(Harness just above shoulders)

Children above 30 lbs

must use the Forward

Most Buckle Slot ONLY!

Children 20-30 lbs

must use the Middle

Buckle Slot ONLY!

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REAR-FACING INSTALLATIONS:

5-45 lbs (2.3-20 kg)

Infants who weigh less than 20 lbs (9 kg) and are

under 1 year old, MUST use this car seat

Rear-Facing.

Place car seat rear-facing in the vehicle back seat.

Make sure LATCH strap or vehicle seat belt is

routed through the rear-facing belt path marked

with the blue label and rear-facing illustrations.

Install this car seat tightly in your vehicle. The car

seat should not move at the rear-facing belt path

location by more than 1 in. (2.5 cm) from side to side,

front to back. If using a lap belt only, refer to your

vehicles owners manual for installation advice.

Harness straps MUST be at or just below the top

of your child’s shoulders. The chest clip should be

placed at armpit level.

The American Academy of Pediatrics (AAP) and

NHTSA recommend that children be rear-facing

until the age of 2 or until they reach the maximum

rear-facing height and weight. This car seat can

remain rear-facing up to 45 lbs.

Rear facing top tether is available.

REAR FACING

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REAR FACING

INSTALL USING LATCH: 5-35 lbs (2.3-15.8 kg)

Do Not Install by this method for a child weighing

more than 35 lbs (15.8 kg) Reinstall with vehicle belt

for weights between 35-45 lbs (15.8-20 kg).

1. Install Detachable Rear Base – Align posts as

shown in gray by aligning the color coded dots. Slide

the base into place to align the dots Blue to Blue,

Yellow to Yellow. Once aligned, press the lever shown

into the seat base to engage. Conﬁrm base is locked

and does not move.

2. Remove LATCH Strap from Storage Location on

back of seat.

Fold down cover on back of car seat. Locate the

LATCH Strap in the belt storage location shown. Push

in on the red buttons on the LATCH connectors and

remove from storage position 1.

3. Extend the LATCH Strap.

For easier installation, extend the LATCH strap to its

maximum length by pressing the grey button and

pulling on the strap.

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4. Place LATCH for access to

Rear-facing belt path. Unzip the

pocket to the right side of the latch

storage area, this will allow you to

move the latch connectors down

to the rear-facing belt path. Feed

LATCH anchors down, keeping

it under the cover and out the

bottom. Once completed, close

the zip pocket.

5. Place Car Seat Rear-Facing in

Back Seat of the Vehicle

Place rear-facing in vehicle seat

and center the car seat between

the lower LATCH anchors. The

base should sit ﬂat on the vehicle

seat.

6. Locate the LATCH Strap in the

Rear-Facing Belt Path.

Thread the LATCH strap through

the rear-facing belt path (marked

with the blue label) and out the

other side. The LATCH belt should

lie ﬂat and not be twisted.

REAR FACING

7. Attach LATCH Connectors to

Vehicle’s Lower LATCH Anchors

and listen for audible click to

conﬁrm engagement.

8. Tighten the LATCH Strap

Press down ﬁrmly in the center of

the car seat while tightening the

LATCH strap. You may need to

tighten further by pulling upwards

in-line with the belt path as shown.

9. Test for Tightness

Grab the side of the seat with

one hand where the LATCH strap

is and slide the car seat side-to-

side and front-to-back. If the seat

moves less than 1 inch (2.5 cm),

it is tight enough. Do not test by

grasping top of the seat.

10. To Remove LATCH Strap From

Vehicle

Push in on the red buttons on the

LATCH connects and pull them o

the anchor bars.

REAR FACING

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REAR FACING

INSTALL USING SHOULDER/LAP BELT WITH

5-POINT HARNESS : 5-45 lbs (2.3-20 kg)

1. Place Car Seat Rear-Facing in Back Seat of the

Vehicle with Detachable Base Installed (Page 32).

The base should sit ﬂat on the vehicle seat and must

sit fully on the seat.

2. Route the Vehicle Seat Belt

Thread the vehicle seat belt through the rear-facing

belt path (marked with the blue label) and out the

other side. Engage and buckle it. The seat belt should

lie ﬂat and not be twisted.

3. Tighten the Vehicle Seat Belt

In most vehicles today, slowly pull the shoulder belt

all the way out and then let it go back in. You will

hear a clicking sound as the belt retracts. Slowly pull

out on the belt and it should be locked. If not, please

review your car’s owner manual.

Press down ﬁrmly in the center of the car seat. To

tighten, pull from the shoulder belt on the side

nearest to the buckle while feeding the slack back

into the retractor.

4. Test For Tightness

Grab the side of the seat where the vehicle seat belt

is and slide the car seat side-to-side and front-to-

back. If the seat moves less than 1 in. (2.5 cm), it is

tight enough. Do not test by grasping top of the seat.

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REAR FACING

3. Tighten the Vehicle Seat Belt

Press down ﬁrmly in the center of the car seat. To

tighten, pull on the loose end of the vehicle lap belt

to tighten it.

4. Test For Tightness

Grab the side of the seat where the vehicle seat belt

is and slide the car seat side-to-side and front-to-

back. If the seat moves less than 2.5 cm (1"), it is tight

enough. Do not test by grasping top of the seat

INSTALL USING 5-POINT HARNESS WITH:

LAP BELT: 5-45 lbs (2.3-20 kg)

1. Place Car Seat Rear-Facing in Back Seat of the

Vehicle with Detachable Base installed (Page 32).

The base should sit ﬂat on the vehicle seat and must

sit fully on the seat.

2. Route the Vehicle Seat Belt

Thread the vehicle seat belt through the rear-facing

belt path (marked with the blue label) and out the

other side. Engage and buckle it. The seat belt should

lie ﬂat and not be twisted.

REAR FACING

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FORWARD FACING

installation instructions

REAR FACING FORWARD FACING

BOOSTER MODE

FORWARD FACING

FORWARD-FACING INSTALLATIONS:

20-65 lbs (9.1-29.5 kg)

NOTE: IF the child is UNDER 40 Lbs install the

Diono Safe Stop by following the instructions on

page 59 before proceeding.

IMPORTANT: The Safe Stop will need to be

removed once the child reaches 40 lbs.

NOTE: IF the child is OVER 40 LBS, go to Step 1

of Installation using a Shoulder/Lap With 5-Point

Harness

IMPORTANT: IF the child is OVER 25 LBS, lower the

adjustable bottom by following the instructions on

page 40.

NOTE: For Forward-Facing installations using a

LAP BELT ONLY with NO Top Tether anchor point

available, you MUST install the Diono Lap Belt

Cushion by following the instructions on page 60

before proceeding; otherwise go to Step 1 below.

Place car seat forward-facing in the vehicle back

seat. IF the child is over 25 lbs, lower the bottom.

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Lift the bottom bar up and over the inside channel

toward the seat bottom to release. Conﬁrm locked.

Make sure LATCH strap or vehicle seat belt is

routed through the forward-facing belt path marked

with the red label and forward-facing illustrations.

Install this car seat tightly in your vehicle. The car

seat should not move at the forward-facing belt

path location by more than 1 in. (2.5 cm) from side

to side, front to back. If using a lap belt only, refer to

your vehicles owners manual for installation advice.

Harness straps MUST be above the top of your

child’s shoulders. The chest clip should be placed at

armpit level.

The American Academy of Pediatrics (AAP) and

NHTSA recommend that children be rear-facing

until the age of 2 or until they reach the maximum

rear-facing height and weight. This car seat can

remain rear-facing up to 45 lbs.

FORWARD FACING

INSTALL USING LATCH: 20-40 lbs (2.3-18 kg)

Do Not Install by this method for a child weighing

more than 40 lbs (18 kg) Reinstall with vehicle belt

for weights between 40-65 lbs (18-29.5 kg).

1. Remove LATCH Strap from Storage Location on

back of seat.

Fold down cover on back of car seat. Locate the

Latch Strap in the belt storage location shown. Push

in on the red buttons on the LATCH connectors and

remove from storage position 1.

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2. Extend the LATCH Strap.

For easier installation, extend the

LATCH strap to its maximum length

by pressing the gray button and

pulling on the strap.

3. Unhook and Remove Top Tether

Strap from Storage Location on

back of seat.

Look for the Top Tether location 2.

FORWARD FACING

4. Place LATCH in Forward-facing

belt path.

Unzip the pocket to the right side

of the latch storage area, this will

allow you to move the latch

connectors down to the forward

facing belt path. Feed LATCH

anchors as shown; once

completed – close the zip pocket.

5. Place Car Seat Forward-Facing

in Back Seat of the Vehicle

Place forward-facing in vehicle

seat and center the car seat

between the lower LATCH

anchors. The base should sit ﬂat on

the vehicle seat.

6. Loosely Attach Top Tether Strap

Do not tighten. Consult vehicle’s

owner manual for speciﬁc location.

FORWARD FACING

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7. Locate the LATCH Strap in the

Forward-Facing Belt Path.

Thread LATCH strap through the

forward-facing belt path (marked

with the red label) and out the

other side. The LATCH anchors are

easier to feed through by pulling

forward on the front cover as

shown.

8. Attach LATCH Connectors to

Vehicle’s Lower LATCH Anchors

and listen for audible click to

conﬁrm engagement.

LATCH strap should lie ﬂat and not

be twisted.

9. Tighten the LATCH Strap

Press down ﬁrmly in the center of

the car seat while tightening the

LATCH strap. You may need to

tighten through the opening in the

pad at the belt path as shown, by

pulling it through and up.

FORWARD FACING

10. Tighten the Top Tether Strap

Push the car seat back while

tightening the tether strap to

remove all the slack.

11. Test for Tightness

Grab the side of the seat with one

hand where the LATCH strap is and

slide the car seat side-to-side and

front-to-back. If the seat moves

less than 1 inch (2.5 cm), it is tight

enough. Do not test by grasping

top of the seat.

12. To Remove LATCH Strap From

Vehicle

Push in on the red buttons on the

LATCH connects and pull them o

the anchor bars.

FORWARD FACING

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FORWARD FACING

INSTALL USING SHOULDER/LAP BELT WITH

5-POINT HARNESS : 20-65 lbs (9.1-29.5 kg)

1. Unhook and Remove Top Tether from Storage

Location on back of seat.

Look for the Top Tether location 2.

FORWARD FACING

2. Place Car Seat Forward-Facing

in Back Seat of the Vehicle. The

base should sit as ﬂat as possible

on the vehicle seat and must sit

fully on the vehicle seat.

3. Route the Vehicle Seat Belt

Thread the vehicle seat belt

through the forward-facing belt

path (marked with the red label)

and out the other side. Engage and

buckle it. The seat belt should lie as

ﬂat as possible and not be twisted.

4. Loosely Attach Top Tether Strap

Do not tighten. Consult vehicle’s

owner manual for speciﬁc location.

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FORWARD FACING

5. Tighten the Vehicle Seat Belt.

In most vehicles today, slowly

pull the shoulder belt all the way

out and then let it go back in. You

will hear a clicking sound as the

belt retracts. Slowly pull out on

the belt and it should be locked.

If not, please review your car’s

owner manual. Press down ﬁrmly

in the center of the car seat. Pull

on the shoulder belt to tighten

while feeding the slack back in the

retractor.

6. Tighten the Top Tether Strap.

Push the car seat back while

tightening the tether strap to

remove all the slack.

FORWARD FACING

7. Test For Tightness.

Grab the side of the seat on the

buckle side with one hand where

the LATCH strap is and slide the

car seat side-to-side and front-to-

back. If the seat moves less than 1

inch (2.5 cm), it is tight enough. Do

not test by grasping top of the seat.

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BOOSTER MODE

installation instructions

REAR FACING FORWARD FACING

BOOSTER MODE

BOOSTER MODE INSTALLATIONS:

50-120 lbs (22.7-54 kg)

WARNING! Use ONLY the vehicle lap and shoulder

belt system when restraining the child in this

booster seat. DO NOT use a lap belt only!

WARNING: Make sure the vehicle seat belt has

properly retracted before use.

NOTE: If 5-Point harness is installed, please review

the harness removal section. The 5-point harness

MUST be removed to use this seat in booster

mode.

1. Place Child In Seat

Have your child sit in the booster seat, with his/her

back ﬂat against the back of the booster seat.

2. Thread Vehicle’s Shoulder Belt Over Seat and

between inside of car seat shell and the belt guide

in the Headrest.

3. Buckle the Vehicle Lap/Shoulder Seat Belt

Be sure the shoulder belt lies across your child’s

shoulders, between the neck and edge of the

shoulder. Be sure the lap portion of the vehicle seat

belt goes under the side nubs and the belt lies low

across your child’s hips.

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INITIAL SETUP

1. Place Your Child in the Seat

Make sure their back is ﬂat against the car seat back.

(This can be done in or out of the car). Avoid bulky or

heavy clothing because they will prevent the harness

straps from being tightened properly at ﬁrst ﬁtment.

2. Place Harness Straps Over Child’s Shoulders and

Buckle

You will hear a “click” when buckle tongues are

securely attached. Pull up on each buckle tongue to

make sure it is securely attached.

3. Be Sure the Harness Straps Are at the Proper Height

SECURING YOUR CHILD SECURING YOUR CHILD

HARNESS SETUP

1. Loosen Harness Straps

Lift up on the harness adjuster while pulling out on the

harness straps at the chest clip. Unbuckle the chest clip

and the center buckle. Place harness straps o to the

sides.

2. Place Your Child in the Seat

Make sure their back is ﬂat against the car seat back.

Avoid bulky or heavy clothing. Doing so will prevent

the harness straps from being tightened properly.

3. Place Harness Straps Over Child’s Shoulders and

Buckle

You will hear a “click” when buckle tongues are

securely attached. Pull up on each buckle tongue to

make sure it is properly secured.

NOTE: Remember: The addition or removal of

clothing will change the ﬁt of the harness, especially

bulky winter jackets. Diono recommends harnessing

your child ﬁrst and placing a blanket over them or

putting their jacket on backwards.

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HARNESS ADJUSTMENT

Changing Harness Position

1. First Loosen the Harness Straps

Lift up on the harness release lever while pulling out

on the harness straps at the chest clip. Unbuckle the

chest clip. Detach the buckle tongues from the center

buckle.

2. Remove Harness Straps from Metal Plate

On back of seat, detach harness from metal plate.

Once detached, pull each harness through to the front

of the seat. Re-locate each harness to the correct

slot determined, push through to the back of the seat

taking care to keep each harness strap ﬂat. Re-secure

the Harness Straps to the Metal Plate. Check to ensure

proper engagement to the metal plate.

3. Check the Center Buckle Position

When rear-facing, the correct slot is the one that is

closest to your child without being underneath your

child. When forward-facing, children 20-30 lbs MUST

use the middle buckle slot only. Children above 30 lbs

MUST use the forward most buckle slot only.

4. To Adjust Center Buckle Strap

Reach into the Rear-Facing Belt path slot marked in

blue. You will feel the buckle strap metal retainer.

HARNESS ADJUSTMENT

5. Rotate Metal Retainer and Insert It Up Through the

Shell and Pad

From the top of the car seat, pull the buckle strap out.

6. Insert Metal Retainer in the New Buckle Slot

Position

Reach underneath the car seat and pull the metal

retainer through.

7. Pull Up on Center Buckle Strap to Make Sure it is

Secured

8. Pull All the Slack Out From Around the Waist

Pull up on the harness strap while pushing the chest

clip down. Do this to both sides.

9. Tighten the Harness by Pulling the Harness

Adjustment Strap

When you are not able to pinch any of the harness

webbing at your child’s shoulder, the harness is tight

enough. A snug harness should not allow any slack. It

lies in a relatively straight line without sagging. It does

not press on the child’s ﬂesh or push the child’s body

into an unnatural position.

10. Buckle the Chest Clip

You will hear a “click” when the chest clip is securely

buckled.

11. Raise the Chest Clip to the Child’s Armpit Level.

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CARE/MAINTENANCE

CLEANING FABRICS: Seat pad, Infant inserts, Buckle

pad and Shoulder pads.

Machine wash in cold water on gentle cycle with

mild detergent. Dry ﬂat and away from direct sunlight

before re-use or storage. DO NOT bleach, iron or dry

clean.

CLEANING HARNESS: Buckles, Harness, and Buckle

straps

Spot clean using warm water with mild detergent.

Air dry completely before re-use or storage. DO NOT

bleach or iron.

CLEANING PLASTIC: Spot clean using warm water

with mild detergent. Towel dry completely before

re-use or storage. DO NOT bleach.

CLEANING BUCKLE, SEAT FRAME AND LOWER

ANCHOR CONNECTOR HARDWARE NOTE: Buckle

should fasten with a “click” if not, rinse under warm

running water. DO NOT use detergents or lubricants.

CARE/MAINTENANCE

Machine wash in cold

water on gentle cycle.

Use mild detergent.

CLEANING FABRICS: Infant Insert, Harness and Buckle Pad.

Dry ﬂat and in

the shade only.

DO NOT bleach,

iron or dry clean.

30°

Spot clean only

with warm water.

Use mild detergent.

CLEANING HARNESS: Seat Pad, Buckles, Harness and Buckle Straps.

Dry ﬂat and in

the shade only,

before re-use.

DO NOT bleach

or iron.

30°

Spot clean only

with warm water.

Use mild detergent.

CLEANING PLASTICS: Seat Shell and Components.

Towel dry

completely

before re-use.

DO NOT bleach.

30°

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BELT LOCKING CLIP

WARNING: If your vehicles lap/shoulder seatbelt is

equipped with ELR (Emergency Locking Retractor)

that does not switch to function as an ALR (Automatic

Locking Retractor), you MUST use a locking clip to

secure lap portion of vehicle seat belt. If you have any

questions; please consult your vehicle owner’s manual

or contact the vehicle manufacturer.

1. Remove Lock Clip from Belt Storage Pocket.

2. Route the vehicle seat belt through the proper belt

path and buckle it in. Pull the vehicle seat belt tight.

While pushing down on seat, pinch the two straps

together behind the buckle tongue. Unbuckle the belt

without allowing it to slip.

2. Attach locking clip to lap and shoulder belts as

shown. Rebuckle belt. Check that lap belt does not

move by pulling hard. If belt loosens or lengthens,

repeat procedure.

SAFE STOP

SAFE STOP:

ONLY for use in Forward-Facing Installations from

20-40 lbs (9.1 - 18kg). DO NOT use Rear-Facing.

1. Look for the Belt Storage Icon on the back of the

seat and fold down the rear Velcro ﬂap. Detach the

Safe Stop and remove it for use.

2. Remove Harness Straps from Metal Plate –

Unzip cover on back of seat, detach harness from

metal plate. Once detached, thread both harness straps

onto the metal hook of the Safe Stop. Connect Left

side of harness ﬁrst, then follow with the right.

3. Thread bottom of Safe Stop onto the metal hook of

harness adjuster. Check to ensure proper engagement

to the metal plate. Close cover on back of seat, taking

care to ensure the strap is clear from any obstruction.

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LAP BELT CUSHION

LAP BELT CUSHION:

For Forward-Facing installations using a LAP BELT

ONLY with NO Top Tether available from 20-65 lbs

(9.1 - 29.5kg). DO NOT use Rear-Facing.

1. Remove the Center buckle pad by pulling it carefully

up and over the buckle.

2. Slide the Center buckle through the slot in the

cushion that matches the slot position being used on

the seat.

3. Reinstall the Center buckle pad. Should you need a

longer buckle, these are available by calling Customer

Service.

COMFORT FEATURES

ADJUSTING SIDE IMPACT HEADREST:

IMPORTANT: Head support is not recommended for

newborns or small toddlers. When your child ﬁts at

the third harness slot, the head support may now be

used at its lowest position.

1. Carefully unfasten the fabric panels by

detaching the velcro located on the upper sides and

beneath the headrest.

2. Position hand as shown, tilt the top of the headrest

slightly towards you and slide upwards. Note: You

might need two hands.

3. Carefully re-fasten the fabric panels.

4. To lower the headrest, follow the steps above; but

slide the headrest downwards.

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HARNESS STRAP REMOVE/REPLACE

1. Unzip Back Seat Cover to access harness. Remove

harness straps from the metal hook.

2. Pull the harness straps out from the back of the seat

and remove the Chest Clip and Harness Pads from

each side. Slide the harness strap out of the buckle

tongues.

3. Using a Phillips head screwdriver, take out the

screws and remove the access panel shown. Remove

old harness straps from seat.

4. Insert new harness strap through the slot shown

and pull the strap up.

5. Once the strap is pulled up until the metal D-ring

is located as shown, re-fasten and close the access

panels in step 3.

Slide the new harness straps through the buckle

tongues, re-attach the chest clip and reinstall the

harness pads.

Slide the harness straps through to the back of the seat

and re-install them to the metal hook in Step 1.

HARNESS STRAP REMOVE/REPLACE

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AIRCRAFT INSTALLATION

Rear-Facing Installation

1. Adjust the seat belt buckle to its shortest length to

ensure the buckle is accessible for release.

2. Ask the ﬂight attendant for a “seat belt extender” and

then use this extender to adjust the seat belt length.

3. Following the instructions in Rear-Facing installation

section for use with a Lap Belt to complete.

Forward-Facing Installation

1. Follow the instructions in the Forward-Facing

installation section for use with a Lap Belt.

INFANT INSERT - SIDE WINGS

INFANT INSERT USE:

1. To ensure a better ﬁt for smaller infants, we

recommend using the infant head and body support

inserts included with your car seat. Use of these inserts

is optional and does not aect the safety of the seat.

Slide the buckle through the bottom buckle slot on the

infant insert that matches the slot chosen on the seat.

ADJUSTING EXPANDABLE SIDE WINGS:

1. The side wings can be adjusted for comfort as

shown. These will not impact the safety of the car seat

in any manner. Simply push the side wings outward as

shown to extend.

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CUP HOLDER USE

1. To attach your cup holder, locate the cup holder tab

attached on the side of your preference.

2. Adjust expandable side to it’s most outer position.

3. Align the tab on the cup holder with the slot in the

seat as shown. Push down to securely engage the

cupholder into the slot and twist to ﬁrmly lock in place.

WARRANTY

LIMITED ONE-YEAR WARRANTY This product is

warranted against physical defects in materials or

workmanship as a result of normal use for one year

from the date of original retail purchase. Proof of

purchase is required. The exclusive remedy for this

warranty is that Diono will upon return of the product

to Diono and determination of any such defect, at its

sole option replace, repair or provide replacement

components for this product. Diono reserves the right

to discontinue or change fabrics, parts, models or

products, or to make substitutions. To make a claim

under this warranty, contact Diono Customer Care at

1-855-463-4666 (7:00 am to 5:00 pm PST.)

WARRANTY LIMITATIONS This warranty does not

include damages which arise from negligence, misuse

or use of the product not in accordance with the

product instruction. The use of non-Diono covers,

inserts, toys, accessories, or tightening devices is not

approved by Diono. Their use could cause a restraint

product to fail Federal Safety Standards or perform

worse in a crash. Their use automatically voids the

Diono warranty.

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WARRANTY

DIONO MAKES NO EXPRESS OR IMPLIED WARRANTIES

OF ANY KIND OR NATURE, EXCEPT THOSE STATED

IN THIS POLICY. DIONO DISCLAIMS ALL OTHER

WARRANTIES, EXPRESS OR IMPLIED, INCLUDING

WITHOUT LIMITATION IMPLIED WARRANTIES OF

MERCHANTABILITY, FITNESS FOR A PARTICULAR

PURPOSE AND NON INFRINGEMENT.

LIMITATION OF LIABILITY TO THE MAXIMUM

EXTENT PERMITTED BY LAW, IN NO EVENT SHALL

DIONO OR ITS THIRD PARTY SUPPLIERS BE

LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT

OR CONSEQUENTIAL DAMAGES WHATSOEVER,

WHETHER BASED ON TORT, CONTRACT OR OTHER

LEGAL THEORY, ARISING OUT OF THE USE OR

INABILITY TO USE THE PRODUCT, EVEN IF DIONO

HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH

DAMAGES. BECAUSE SOME STATES DO NOT ALLOW

THE EXCLUSION OR LIMITATION OF LIABILITY FOR

CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE

ABOVE LIMITATION MAY NOT APPLY. IN NO EVENT

WILL DIONO BE OBLIGATED TO PAY DAMAGES TO

ORIGINAL RETAIL PURCHASER OR RETAILER FOR ANY

AMOUNT EXCEEDING THE PRICE THAT PURCHASER

PAID FOR THE PRODUCT. DIONO IS NOT LIABLE FOR

ANY CLAIM MADE BY A THIRD PARTY OR MADE BY

PURCHASER FOR A THIRD PARTY.

WARRANTY

This warranty gives purchaser speciﬁc legal rights,

and purchaser may have other rights, which vary from

state to state. Neither Diono, nor the retailer selling

this product, authorizes any person to create for it any

other warranty, obligation, or liability in connection

with this product. This warranty information can also

be found in your Diono product’s instruction manual.

AUTHORIZED RETAILERS Please visit the nearest

authorized Diono retailer or authorized online retailer

to purchase Diono products. A list of Diono authorized

retailers can be found on our website. Not all products

are available at all retailers. Diono products purchased

from unauthorized retailers, online auction sites, or as

second-hand items, are not covered under warranty.

While the warranty may not be applicable for products

purchased from such sources, replacement parts can

be purchased.

Diono US LLC

14810 Puyallup Street E, Suite 200, Sumner, WA 98390

Tel: 1-855-463-4666 | Made in China | diono.com

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