Radian 3RX User manual

Car Seat Instruction Manual
Manuel d’Instructions du Siège d’Appoint
Manual de Instrucciones de Silla de Carro
LEA LAS INSTRUCCIONES
antes de usar este asiento de seguridad para niños
READ INSTRUCTION MANUAL
before using this child restraint
Radian®3RX
All-In-One Convertible
Tout-En-Un Convertible
Convertible Todo-En-Uno
LIRE LE MODE D'EMPLOI
avant d'utiliser ce dispositif de retenuepour enfant
5-120 lb / 2.3-54 kg

Radian® 3RX
2
WE LOVE TO HELP
Hello there, Welcome to the Diono family!
We’ve created
this lovingly engineered car seat to help keep your child
comfortable and safe with all of the goods and none of the
gimmicks. We look forward to lending a helping hand
each and every day.
Any questions?
Diono U.S.: 1-855-463-4666
Diono Canada: 1-866-954-9786
FRENCH
SPANISH
REGISTER THIS CAR SEAT
Certication
Safe Use Guide
Warnings & Safe Practices
Car Seat After Collision
Parts
Vehicle Seating Locations
LATCH/UAS
Top Tether
First Setup
Unfolding/Folding
Harness Setup
CONTENTS
68
138
4
6
7-11
12-15
16-17
18-19
20-22
23
24
25-28

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CONTENTS
Infant Support
Adjustable Headrest
REAR-FACING INSTALLATION
Rear-Facing Checklist
LATCH Installation
Lap/Shoulder Belt Installation
Lap Belt Installation
FORWARD-FACING INSTALLATION
Forward-Facing Checklist
Adjustable Bottom
Safe Stop
LATCH/UAS Installation
Lap/Shoulder Belt Installation
Lap Belt Cushion
Lap Belt Installation
BOOSTER MODE INSTALLATION
Changing Harness Position
Harness Strap Removal/Replace
Aircraft Installation
Comfort Features
Care and maintenance
Warranty
30-41
42-55
56-57
58-59
60-61
62
63
64-65
66-67

Radian® 3RX
4
REGISTER THIS CAR SEAT
Please take a few moments to promptly ll out and return the attached card
or register online using the direct link to the manufacturer’s registration
website provided.
Child restraints could be recalled for safety reasons. You must register 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 U.S., PO Box 77129, Seattle, WA 98177
or call 1-855-463-4666 or register online at: http://diono.com/product-
registration/
Diono Canada ULC, 2160 S. Service Rd. W.,Oakville, ON L6L 9Z9
Canada or call 1-866-954-9786 or register online at: http://diono.ca/
product-registration/
For future reference, in the case of a change of address, please take a
moment to ll out the following information:
Model Number:
Manufacture Date:
This information can be found either on the registration card or on the
manufacturing label located on the seat.
Time. It goes so fast... Who would have thought that over
two decades have passed since we rst 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 are 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 & innovators rub shoulders
within a landscape of adventure; a place where being‘a little
dierent’, is the everyday norm.
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 & followers, some are supporters, tweeters, social
media magicians, miracle moms and devoted dads.
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 diono.com.
share your journey @diono social
or nd the latest news

diono.com 5
OUR STORY
Time. It goes so fast... Who would have thought that over
two decades have passed since we rst 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 are 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 & innovators rub shoulders
within a landscape of adventure; a place where being‘a little
dierent’, is the everyday norm.
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 & followers, some are supporters, tweeters, social
media magicians, miracle moms and devoted dads.
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 diono.com.
share your journey @diono social
or nd the latest news

Radian® 3RX
6
This child restraint system conforms to all
applicable requirements of U.S Federal Motor
Vehicle Safety Standards (FMVSS) 213 and Canada
Motor Vehicle Safety Standards (CMVSS) 213,
213.1, 213.2.
This child restraint is certied for use in aircraft
only when in harness mode.
This child restraint is not certied for use in
aircraft when used in booster mode. Aircraft seats
do not have shoulder belts which are required for use with
this booster.
Register this restraint with the manufacturer.
Diono and the US Federal Aviation Administration (FAA)
strongly urge you to secure your child in a child restraint
system (CRS) or device for the duration of your ight. Please
contact the airline for their specic policies.
CERTIFICATION

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SAFE USE GUIDE
WARNING – FAILURE TO FOLLOW THESE INSTRUCTIONS
AND THE PRODUCT LABELS CAN RESULT IN SERIOUS
INJURY OR DEATH TO YOUR CHILD.
YOUR CHILD’S SAFETY DEPENDS ON YOU. DEATH OR
SERIOUS INJURY CAN OCCUR.
No child restraint 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 5–120 lb (2.3–54 kg) and whose height is 57 in
(144 cm) or less in the following modes.

Radian® 3RX
8
SAFE USE GUIDE
DO NOT place this child restraint rear-facing in a vehicle
seating location with an active front air bag.
Choose the proper child restraint belt path
1. REAR-FACING SECTION
2. FORWARD-FACING SECTION
3. BOOSTER MODE SECTION
Choose a suitable location for this child restraint in your
vehicle. REVIEW VEHICLE SEATING LOCATIONS.
Install this child restraint tightly in your vehicle. Grab the
sides of the seat where the vehicle seat belt or LATCH strap is
and slide the child restraint side-to-side and front-to-back. If
the seat moves less than 1 in (2.5 cm), it is tight enough.
Secure harness snug and at on your child.
Rear-facing: 5–50 lb (2.3–22.7 kg) and whose height
is 44 in (112 cm) or less.
Forward-facing: 22–65 lb (10–29.5 kg) and whose
height is 57 in (144 cm) or less.
Booster: 40–120 lb (18–54 kg) and whose height is
57 in (144 cm) or less.

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WEIGHT (
lb
)
REAR-FACING
LATCH/UAS
LAP/SHOULDER BELT
LAP BELT
FORWARD-FACING
LATCH/UAS
LAP/SHOULDER BELT
LAP BELT
w/
TOP TETHER
LAP BELT
w/o
TOP TETHER
BOOSTER
5
2.3
22
10
40
18
50
22.7
65
29.5
120
54
50
35
50
50
MUST BE
REAR-FACING
22
CAN BE
REAR-FACING
65
22
WITH
SAFE STOP WITHOUT
SAFE STOP
40
22 40
65
22
65
22
40
USE DETACHABLE REAR-FACING BASE
REMOVE 5-POINT
HARNESS
LAP/SHOULDER BELT ONLY
MUST USE LAP BELT CUSHION
65
22
57 in (145 cm)
or less
57 in (145 cm)
or less
(
kg
)
44 in (112 cm)
or less
INSTALLATION
SAFE USE GUIDE

Radian® 3RX
10
SAFE USE GUIDE
Infants who weigh less than 22 lb (10 kg) and are under 1
year old, MUST use this child restraint 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.
Check all installation congurations before discarding the box.
Diono cannot guarantee proper t in all vehicles.
According to accident statistics, children are safer when
properly restrained in the rear seating positions than in
the front seating positions.

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Rear-facing: Harness straps MUST be at or just below the
child’s shoulders. Top of head must be 1.5 in (3.8 cm) below
the top of the car seat shell.
Forward-facing: Harness straps MUST be just above the
child’s shoulders. Top of child’s ears MUST be below top of
car seat shell.
Booster mode: Child MUST be
secured using ONLY the vehicle lap/
shoulder belt. Child MUST weigh at
least 40 lb (18 kg), with shoulders
positioned at or above the 4th slot
and remain properly seated for the
entire ride.
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.
NEVER leave child restraint unsecured in your vehicle even
when it is unoccupied. It could injure other occupants in a
sudden stop or collision.
4
SAFE USE GUIDE

Radian® 3RX
12
Never place this child restraint rear-facing
in a vehicle seating location with an active
front air bag. Death or serious injury may
occur. If an air bag inates, it can hit the child
or child restraint with enough force to cause
serious injury or death to your child. For
vehicles with side passenger 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
harness straps 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.
For any questions or concerns please contact diono at:
Diono U.S.:
1-855-463-4666 or online at www.diono.com
Diono Canada:
1-866-954-9786 or online at www.diono.ca
WARNING!
DEATH or SERIOUS INJURY can occur.

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• DO NOT use child restraint in any conguration not
shown in the instructions.
• DO NOT modify your child restraint.
• 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/UAS) if
available OR the vehicle seat belt.
• NEVER use the restraint system in a vehicle seating
position where it cannot be secured tightly. A loosely
installed restraint system will not protect your child in a
collision.
• DO NOT use the LATCH/UAS system to attach this child
restraint rear-facing when restraining a child weighing
more than 35 lb (15.8 kg) or forward-facing when
restraining a child weighing more than 40 lb (18 kg).
• ALWAYS use the top tether strap on this child restraint
when installed forward-facing.
WARNING!
DEATH or SERIOUS INJURY can occur.

Radian® 3RX
14
• 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.
• NEVER remove harness from child restraint without
following the proper removal and installation
instructions available from Diono.
• DO NOT use child restraint without seat cover installed.
• ALWAYS check to ensure buckle is securely latched.
• NEVER leave child unattended. Do not allow children to
play in or around the child restraint. Child may become
tangled in harness straps and suocate or strangle.
• ALWAYS keep child properly secured in harness
whenever child is in child restraint.
WARNING!
DEATH or SERIOUS INJURY can occur.

diono.com 15
WARNING!
DEATH or SERIOUS INJURY can occur.
EXPIRATION
• DO NOT use the child restraint if any part is damaged
or broken, expired (over ten years from date of
purchase), missing instructions, missing parts, or if the
straps are cut, frayed, or damaged in any way. Call to
find out if the damaged part or parts can be replaced.
Diono U.S.: 1-855-463-4666
Diono Canada: 1-866-954-9786
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 collision, 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.

Radian® 3RX
16
CAR SEAT USE AFTER A COLLISION
UNITED STATES
The U.S. National Highway Trac Safety Administration
(NHTSA) recommends that car seats be replaced
following a MODERATE or SEVERE collision in order
to ensure a continued high level of collision protection
for child passengers. In the U.S., car seats do not
automatically need to be replaced following a MINOR
collision.
NHTSA defines a MINOR crash as one in which ALL of
the following apply:
• The vehicle was able to be driven away from the
crash site.
• The vehicle door nearest the car seat was not
damaged.
• None of the passengers in the vehicle sustained any
injuries in the crash.
• If the vehicle has air bags, the air bags did not deploy
during the crash; and
• There is no visible damage to the car seat.
NEVER use a car seat that has been involved in a
MODERATE or SEVERE collision.

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CAR SEAT USE AFTER A COLLISION
CANADA
• DO NOT USE THIS CHILD RESTRAINT SYSTEM IF
IT HAS BEEN IN A VEHICLE ACCIDENT.
• Transport Canada designates that you MUST
replace this child restraint if it has been involved in
a collision.
• You must dispose of your child seat or booset seat if
the child seat was in a vehicle during a crash. Even
if the child seat was empty or was not directly hit, it
may be damaged.
• You must dispose of your child seat or booset seat
if the shell is cracked or the webbing of the child car
seat is frayed, torn or discolored.

Radian® 3RX
18
RADIAN 3 RX SS21
i
PARTS
20
21
12
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
19
18

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PARTS
1. LATCH/UAS STORAGE
2. TOP TETHER
3. SAFE STOP
4. INSTRUCTION MANUAL
STORAGE
5. HARNESS STRAPS
6. HARNESS STRAP HOOK
7. FORWARDFACING
BELT PATH
8. CHEST CLIP
9. HARNESS PADS
10. BUCKLE
11. BUCKLE PAD
12. HARNESS RELEASE
13. HARNESS ADJUSTER STRAP
14. EXPANDABLE SIDE WINGS
15. REARFACING
BELT PATH
16. UPPER BOOSTER
BELT GUIDES
17. BOOSTER BELT GUIDE
18. DETACHABLE
REARFACING BASE
19. LAP BELT CUSHION
20. CUP HOLDER
21. INFANT SUPPORT PAD

Radian® 3RX
20
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. If the airbag inates, 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.