Cosco Scenera Next User manual

i ii
FUNSMARTSIMPLE
SCENERA NEXT
CONVERTIBLE CAR SEAT
Rear-Facing Mode: 2.3-18 kg (5-40 lb)
and 48-102 cm (19-40 in.)
Forward-Facing Mode: 10-18 kg
(22-40 lb) and 74-110 cm (29-43 in.)
and at least 1 year old
KEEP INSTRUCTIONS FOR FUTURE
USE. Read all instructions before
using this car seat.
WARNING Failure to follow the
warnings on the labels and in the
instruction manual can result in
serious injury or death to your child.
4358-7826 9.29.20

Overview
Welcome to the Cosco family and thank you for choosing
this car seat, also known as a child restraint!
To help you get started using your child’s new car seat,
here are the 4 main tasks you’ll need to complete:
Your child’s safety is worth the time it will take for you to read
and follow these instructions.
Ready? Let’s go!
Pages 1-3 will introduce you to the parts of the car seat.
Page 68 has our contact information. If at any point you would like assistance,
please feel free to reach out to us.
Adjust the Car Seat to Fit Your Child
Measure Your Child
Install the Car Seat into Your Vehicle
Secure Your Child in the Car Seat

Quick Navigation
REAR-FACING
2.3-18 kg (5-40 lb)
and 48-102 cm
(19-40 in.)
PAGE 5
Rear-Facing
Child Fit
PAGE 7
Forward-Facing
Child Fit
PAGE 8
Adjusting
Car Seat
PAGES 9-16
Securing
Child
PAGE 46
Vehicle Belt
PAGE 29
UAS Belt
PAGE 33
Vehicle Belt + Tether
PAGE 39
UAS Belt + Tether
PAGE 42
FORWARD-FACING
10-18 kg
(22-40 lb)
and 74-110 cm
(29-43 in.)
And at least
1 year old
PAGE 5

Contents
Getting Started
Parts of Car Seat ............................. 1
Accessory Use (On Select Models).3
Choosing Car Seat Mode ............... 4
Preparing Car Seat for Child Fit .......... 6
Rear-Facing Child Fit ...................... 7
Forward-Facing Child Fit .................. 8
Making Adjustments to Car Seat
Changing Buckle Position ............... 9
Changing Shoulder Harness Strap
Position .......................................... 11
Harness System Adjustments for Smaller
Infants ............................................. 13
Choosing UAS or Vehicle Belt
UAS Use ......................................... 17
Vehicle Belts .................................. 20
Tether Use ...................................... 25
Installation in Vehicle
Rear-Facing Mode .......................... 27
Rear-Facing Vehicle Belt Install ........ 29
Rear-Facing UAS Belt Install ............ 33
Forward-Facing Mode ................... 37
Forward-Facing Vehicle Belt + Tether
Install .............................................. 39
Forward-Facing UAS Belt + Tether
Install .............................................. 42
Securing Child in Car Seat ............. 46
Wash & Care of Car Seat Parts
Removing Seat Pad Set ..................... 49
Cleaning Parts of Car Seat & Installing
Seat Pad Set .................................... 50
Removing Harness System ............... 51
Installing Harness System ................. 53
Safety Information
Aircraft Information ....................... 57
Replacement and Expiration of Car
Seat ................................................ 58
Child Restraint Use ........................... 60
Installation in Vehicle ........................ 61
Vehicle Seating Position ................... 61
Transport Canada Regulations ........... 62
Registration and Safety Notices ......... 63
Additional Information
Troubleshooting ............................... 64
Warranty ......................................... 65
Replacement Parts List ..................... 67
Dorel Juvenile Group Information ...... 68
©2020 Dorel Juvenile. All Rights Reserved.

Parts of the Car Seat
1 2
Harness Strap
Chest Clip
Buckle Removable Cup Holder*
(attachment under pad)
Hip Harness Slots
Harness
Release Lever
(under flap)
Harness
Adjustment
Strap
Shoulder
Harness
Slots
Forward-Facing
Belt Path
Rear-Facing
Level Line
Shell
(car seat)
UAS Belt
Attachment for
Storage
(under side of
shell)
Rear-Facing Belt
Path
Tether Instruction
Manual
Storage
Splitter
Plate
Harness
Adjustment Strap
Tether
Attachment
for Storage
*See page 3 for Accessory Use.
UAS Belt (Universal
Anchorage System)
Bag May Be Located
in Forward-Facing
Belt Path

Accessory Use (On Select Models) Choosing Car Seat Mode
3 4
Measure your child’s weight and
height (do not guess) before choosing
the car seat’s mode.
Your child’s height, weight, and age
determine how the car seat should be
placed in the vehicle.
Children vary widely in body size, shape,
and temperament—please consult
your doctor before switching between
any of these modes within the limits
and fit requirements of the seat.
Provincial Laws: Please be certain to
follow your province’s laws regarding car
seat use.
American Academy of Pediatrics
Recommendations
Infants and Toddlers: Should ride in a
rear-facing car seat as long as possible,
until they reach the highest weight or
height allowed by their seat.
Toddlers and Preschoolers: Once they
are facing forward, children should use
a forward-facing car seat with a harness
for as long as possible, until they reach
the height and weight limits for their
seats.
School-Aged Children: Once they have
outgrown their forward-facing car seat,
children should use a belt-positioning
booster seat until the vehicle’s lap and
shoulder seat belt fits properly. This is
often when they have reached at least 4
feet 9 inches in height and are 8 to 12
years old.
continued on next page
Body Pillow
To remove,
1. Loosen
Harness Straps 2. Slide It Out From
Behind Harness Straps To install,
1. Loosen Harness Straps
2. Slide It Behind Harness Straps
Cup Holder
The cup holder can be
attached to either side
of the shell. Pull pad
off corner of shell. Align
symbol on cup holder with
symbol on shell. Hook
bottom of cup holder under
edge of shell. Snap top of
cup holder over edge of
shell. Replace pad.
Head Pillow
To remove, from
the back of the
head pillow gently pull the fabric
tabs out from the shoulder harness
slots.
To attach, slide the fabric tabs
into shoulder harness slots.
Harness Covers
To remove, pull the
fastening strips apart
and pull them off of the
harness strap.
For Use in Rear-Facing or Forward-Facing Mode
For wash and care instructions, see page 50.
Only For Use in Rear-Facing Mode

Release Chest Clip
Hold each side of the
chest clip.
Press on the release
button with your
thumb and pull the chest clip apart.
Prepare Car Seat to Fit Your Child
5 6
Place Child in Car
Seat to Determine
Proper Harness Fit
Your child’s bottom
and back should be
flat against the car
seat.
For Rear-Facing child fit, see page 7
For Forward-Facing child fit, see page 8.
Fully Loosen
Harness Straps
Push down on the
harness release
lever (through the
opening in the pad)
while pulling out on the harness
straps as shown.
Unbuckle
Harness
Press in towards
the top of the
red button to
release the buckle
tongues.
13
4
2
Older Children: All children younger than
13 years should be restrained in the rear
seats of vehicles for optimal protection.
REAR-FACING MODE
2.3-18 kg (5-40 lb) and 48-102 cm
(19-40 in.)
Children under 1 year of age must ride
Rear-Facing. In this car seat, your
child can remain Rear-Facing until
they outgrow any one of the follow-
ing:
• Weight Limit: 18 kg (40 lb); OR
• Height Limit: 102 cm (40 in.); OR
• Rear-Facing Child Fit requirements,
see page 7
FORWARD-FACING MODE
10-18 kg (22-40 lb) and 74-110 cm
(29-43 in.)
Children must be at least 1 year of age
to ride Forward-Facing.
In this car seat, your child can remain
harnessed Forward-Facing until they
outgrow any one of the following:
• Weight Limit: 18 kg (40 lb); OR
• Height Limit: 110 cm (43 in.); OR
• Forward-Facing Child Fit
requirements, see page 8

Rear-Facing Child Fit Forward-Facing Child Fit
7 8
Head Position
The tops of your child’s
ears must be below the
top of the car seat.
Buckle Position
The buckle can be used in
any buckle slot. Choose the
slot closest to your child.
The buckle should not be underneath or
behind your child.
Harness Strap Position
The harness strap must
be at or slightly above
the your child’s shoulders;
never below.
Need to make adjustments?
To change buckle position,
see pages 9-10.
To change harness strap position,
see pages 11-12.
Head Position
The top of your child’s
head must be at least
2.5 cm (1 in.) below the
top of the car seat.
Buckle Position
The buckle must be used
in either the 1st or 2nd
buckle slot.
Choose the slot closest to
your child.
The buckle should not be
underneath or behind
your child.
Harness Strap
Position
The harness strap must
be at or slightly below
your child’s shoulders; never above.
Need to make adjustments?
To change buckle position,
see pages 9-10.
To change harness strap position,
see pages 11-12.
1
2
Do not use
3rd slot in
Rear-Facing
mode.

Changing Buckle Postition
9 10
Pull Buckle’s
Metal Retainer
Completely
Through Pad
and Shell
Check Buckle
Pull up on the
buckle to make
sure it is secured.
The buckle must
not pull out.
Check your child’s fit often.
If you cannot achieve a snug harness
fit for your child, see pages 13-16.
To learn how to check harness
tightness, see pages 46-49.
Failure to place buckle’s metal
retainer completely through pad and
shell can result in serious injury or
death.
Turn Car Seat
Over
Locate the
buckle’s metal
retainer on the
bottom of the
shell.
Rotate Metal
Retainer and
Push It Up
Through Buckle
Slot in Shell
From Top of Seat,
Pull Buckle Out of
Shell and Pad
Insert Buckle’s
Metal Retainer into
Slot Closest to Child
The buckle must face
out.
Rear-Facing Mode:You must use the
1st or 2nd buckle slot.
Forward-Facing Mode: Any slot can
be used.
1
2
3
1 3 5
6
4
2

Changing Shoulder Harness Strap Position
11 12
Attach Harness
Strap Loops to
Splitter Plate
The sewn ends of
the harness strap
loops must face
towards you.
Do not twist the harness strap or the
harness adjustment strap.
Make sure the same harness strap
loops are fitted completely on both
sides of the splitter plate.
Check your child’s fit often.
sewn
end
If you cannot achieve a snug harness
fit for your child, see pages 13-16.
To learn how to check harness
tightness, see pages 46-49.
Check the harness straps often for
any wear or damage.
Do not use a child restraint with
damaged harness straps.
Fully Loosen
Harness Straps
Push down on
the harness
release lever
(through the
opening in the pad) while pulling
out on the harness straps as
shown.
From Back
of Car Seat,
Remove
Harness Straps
Loops From
Splitter Plate
Pull Harness
Straps Out of
Shoulder Harness
Slots
Rethread
Harness Straps
into Correct
Shoulder Harness
Slots For Your
Child
For Rear-Facing child fit, see
page 7.
For Forward-Facing child fit, see
page 8.
1
2
35
4

Harness System Adjustments for Smaller Infants
13 14
continued on next page
From Back of Car
Seat, Remove
Harness Strap
Loops From
Splitter Plate
Fully Loosen
Harness Straps
Check Buckle
Pull up on the
buckle to make
sure it is secured.
The buckle must
not pull out.
Check your child’s fit often.
To learn how to check harness
tightness, see pages 46-49.
Adjusting Harness Strap
If you cannot achieve a snug harness fit for your child, you may need to adjust the
buckle strap and/or harness strap length as shown in this section.
With Buckle in the
1st Slot As Shown,
Turn Car Seat Over
If you need to move
the buckle to the
1st slot, see pages
9-10.
From Bottom of
Car Seat, Pull
Metal Retainer
Towards You and
Push It Up into
Middle Slot As
Shown
Pull Up Front of
Seat Pad
Adjusting Buckle Strap
From Top of
Car Seat, Lay the
Metal Retainer
Flat Against
Shell As Shown
1 3
1
5 2
4
2Unthread Chest
Clip
Pull Harness
Straps Out of
Shoulder Harness
Slots
3
4

Attach Harness Strap
Loops to Splitter Plate
As Shown
The sewn ends of the
harness strap loops
must face towards you.
Do not twist the
harness strap or the
harness adjustment
strap.
Make sure the
harness strap loops are fitted
completely on both sides of the
splitter plate.
Check your child’s fit often.
Check the harness straps often for
any wear or damage.
Harness system must be
installed correctly. Do not use a
child restraint with damaged
harness straps.
15 16
Thread Buckle and
Chest Clip
The harness strap ends
go through the back of
the buckle tongues and
through the chest clip
front to back as shown.
Thread Harness
Strap Up Through
Slot in Seat Pad
Replace the seat pad
around the front of
the shell.
Make Harness
Strap Even
The sewn ends of
harness strap loops
must face each other.
front of seat bottom of seat
Weave Harness
Strap In and Out of
Shell as Shown
The harness strap
goes behind the
buckle strap.
Thread Harness Strap
Into Correct Shoulder
Harness Slots for Your
Child
sewn
end
Unthread Buckle
Do not unbuckle.
Lift Up Front of
Seat Pad,Turn
Seat Over and Pull
Harness Strap
Down and Out of
Hip Harness Slot
68
10
11
12
9
7
5

UAS Use
17 18
The UAS (Universal Anchorage System) is a universal system for installing child
restraints without using vehicle seat belts.
The UAS can ONLY be used in vehicles that have the UAS bars installed in designated
seating positions. Most vehicles manufactured after September 2002 are equipped
with UAS bars.
Check your vehicle owner’s manual to see which seating positions may be equipped
with UAS bars.
Seat Bight
continued on next page
UAS Anchor Bars
For Use in Rear-Facing
or Forward-Facing Mode Lower Anchor
Hooks
Adjuster To Remove UAS Belt from Storage Location
on Car Seat:
Squeeze spring lever on hooks and
remove hooks from storage attachments.
When installing this car seat with the
vehicle belts, the UAS hooks and belt must
be properly stored.
Do not use both the UAS belt and vehicle belt at the same time.
When used correctly the UAS belt or vehicle belts are equally safe.

Vehicle Belts
19 20
Storing UAS Belt:
When used Rear-Facing, thread UAS belt through Forward-
Facing Belt Path as shown. Then attach hooks to attachments
near Rear-Facing Belt Path as shown. Gently pull free end of
belt to
remove slack.
When used Forward-Facing, thread UAS belt through Rear-
Facing Belt Path. Then attach hooks to attachments near
Rear-Facing Belt Path as shown. Gently pull free end of belt to
remove slack.
To Remove UAS Belt from Vehicle UAS Bars:
Remove tension from the belt by pushing down
on side of car seat with the belt adjuster. Then
press the adjuster button to loosen belt.
Unhook from anchor by squeezing spring lever
on hook, pushing hook back into the seat bight,
and twisting. Then pull it out of the vehicle seat.
Your vehicle’s features may be considerably different than those pictured here.
If UAS are not an option, you must use the vehicle seat belt system to install the car
seat.
Not all vehicle belts and seating positions will work with child restraints. Please
go through the following steps to understand how to lock a child restraint in
Rear-Facing Mode or Forward-Facing Mode with a vehicle belt.
Vehicle Belts
continued on next page

21 22
You Must
Review Your
Vehicle
Owner’s
Manual
Your vehicle
owner’s manual will let you know
which vehicle belts and seat-
ing positions car seats can be
installed in.
Check How This Car
Seat Will Be Locked
Into Place
The vehicle belt must
not loosen after
tightening. This means
there needs to be a way to lock the
vehicle belt.
The ways this can be done are:
• By using the seat belt’s retractor, see
step 3; OR
• By using the seat belt’s latch plate,
see step 4.
continued on next page
Check
Retractor
Retractors pull
seat belts into
stored positions
and lock the belt
to hold passengers in place.
See the next page for some
common types of vehicle belt
retractors that will work with this
car seat.
Switchable Retractor
(most vehicles have this type)
This retractor can be switched to a locking
mode.
You must have the retractor in the
locking mode to use the seat belt with
this car seat.
Switching to locking mode: Slowly pull
the shoulder belt all the way out, then let it
go back in 2.5-5 cm (1-2 in.).
As it goes back in, you will most likely hear
a ratcheting sound.
Gently pull the belt to see if it has locked.
You will not be able to pull any more belt
out if the lock has engaged.
Types of Retractors
123

23 24
This retractor always locks.
It will automatically lock after slowly pull-
ing the seat belt out at least halfway and
letting the belt go back into the retractor
2.5-5 cm (1-2 in.).
If the retractor does not lock, it is most
likely an Emergency Locking Retractor.
These retractors only lock during a sud-
den stop or collision.
Automatic Locking
Retractor
Emergency Locking
Retractor
See Step 4,
“Check Latch
Plates”.
Locking Latch
Plate
Check Latch Plates
Latch plates are the
part of the seat belt
that goes into the
buckle.
To see if the latch
plate locks:
1. Buckle Vehicle
Belt
2. Firmly Tug Lap
Portion of Seat Belt
While Pulling It Up
You will need to determine if your seat
belt’s latch plate can lock the belt. See
step 4, “Check the Latch Plates”.
Emergency Locking
Retractor Lap Only Belt
Inflatable Seat Belts
Never Use With This
Car Seat
If the vehicle belt does not slide through
the latch plate, it’s locked.
If the latch plate slides up and down the
vehicle belt, it is a sliding latch plate.
Sliding latch plates
easily slip between
the lap and shoulder
portions of the belt.
Emergency
Locking
Retractor with
a Sliding Latch
Plate
If you have an Emergency Locking
Retractor with a Sliding Latch Plate,
you must use a locking clip.
Please contact us for one,
see page 67.
4

Tether Use
25 26
Your vehicle’s features may be
considerably different than those
pictured here.
Tether Anchors
For Forward-Facing
Mode Only
You must always attach, adjust, and secure the tether (top anchorage) strap
when installing the car seat in the Forward-Facing Mode with internal harness.
Tethers improve the installation and stability of car seats and reduce the risk of injury.
Attach the tether hook to the tether anchor designated by your vehicle manufacturer
for that seating position. Check your vehicle owner’s manual for more information.
If the seating position does not have a tether anchor, use a different seating position
or see your dealer or a qualified mechanic and have one installed.
Using this child restraint without the tether strap anchored as required by
the manufacturer would be a misuse of the child restraint and, in a sudden stop
or crash, could result in serious injury or death.
Do not fasten multiple tether hooks on the same tether anchor in the vehicle.
Storing Tether Strap
When installing in the Rear-Facing Mode or
when the car seat is not installed in a vehicle,
attach the tether hook to its storage attachment on
the back of the car seat as shown.
Gently tighten to remove slack.
Adjuster
Strap
Hook
Storage
Attachment
Tether Storage and Parts
Adjusting Tether Strap
To tighten:After the car seat is locked into place
with the UAS belt or vehicle belt, push down on
the car seat and gently pull on the free end of the
tether strap.
To loosen: Lift up on the tether adjuster and push
it towards the tether hook.
Pull free end of
belt to tighten
Lift adjuster up to
loosen

Rear-Facing Mode
27 28
2.3 -18 kg (5-40 lb) and 48-102 cm (19-40 in.)
UAS Belt Lap/Shoulder BeltLap Belt
Never install a rear-facing child restraint in the front seat of a vehicle
equipped with an active frontal airbag.
Do not use the tether for rear-facing mode. Secure the tether strap
hook to its storage attachment.
Do not use the UAS belt along with the vehicle lap or lap/shoulder belt.
Check the vehicle belt or the UAS belt before each use. Use only if the belt can
be tightened properly and locked securely in place.
Do not fasten multiple UAS hooks on the same UAS bar in the vehicle.
Even when unoccupied, this child restraint must be firmly secured to the
vehicle with a lower anchor belt or with the vehicle seat belt.
This child restraint must always face the rear of the vehicle until the child is at
least 1 year old and weighs 10 kg (22 lb).

Tighten Belt
Place your hand in
the car seat.
Firmly push the car
seat down and back
towards the vehicle seat back while
pulling the shoulder belt or the free
end of lap belt parallel with the
Rear-Facing Belt Path as shown.
Rear-Facing Vehicle Belt Install
29 30
Check Level Line
The level line on the
shell must be
parallel with the
ground.
Place Car Seat
Rear-Facing
in Back Seat
continued on next page
Check if Your
Vehicle Belts Will
Work With This
Car Seat
This is very
important because not all vehicle
belts will work with car seats.
Review pages 20-24 and your vehicle
owner’s manual to find out what kind
of vehicle belts you have and how to
lock a car seat in place.
Route Vehicle Belt
Thread the vehicle belt
into the Rear-Facing
Belt Path opening as
shown.
The belt goes:
• across the car
seat; AND
• under the car seat
pad; AND
• in front of the
buckle; AND
• out the other
Rear-Facing Belt
Path opening.
Do not twist belt.
1
2
Buckle Vehicle Belt
If your car’s vehicle
belt has a switchable
retractor, use it to
lock the vehicle belt.
1
2
3
4 5
6
Before you begin installing the seat
into your vehicle, did you check:
Your child’s weight and height?
See page 27.
Your child’s fit? See page 7.
Do you need to make adjustments to the
harness height or the buckle position?
For information about
switchable retractors, see page 22 or
review your vehicle owner’s manual.

31 32
Check Belt
Tightness
Hold the car seat
at the Rear-Facing
Belt Path with your
weaker hand.
Push and pull the car seat from side
to side. It should not move more than
2.5 cm (1 in.).
Secure Child in Car
Seat
To properly secure
your child in the
car seat, see pages
46-49.
Check your child’s fit often and make
any needed adjustments to the car seat
as they grow.
Only if necessary you
may need to place a
tightly rolled towel(s)
or foam pool noodle(s)
under the front of the
car seat’s base to help
get the correct recline angle for the
Rear-Facing Level Line.
Check often to make sure padding is still
in place and the belt is tight.
Recheck Rear-
Facing Level Line
Redo the installation
if the level line is
not parallel with the
ground.
Finished!
Check the tightness of the
install often to make sure it
has not loosened.
78
9
If it moves more than 2.5 cm
(1 in.), you can try:
• Pulling the belt tighter; OR
• Reinstalling the car seat; OR
• Changing to a different seating
location; OR
• Switching to UAS belt installation if
UAS anchors are available in your
vehicle