MaxiCosi Pria Chill All-in-One User manual

Send Us a Text: 1-812-652-2525
(US and Canada Only. Carrier Fees May Apply)
Find Us Online: www.maxicosi.com
Email Us: [email protected]
Give Us a Call: 1-800-951-4113
(Toll Free, US and Canada Only)
• Buckle Assembly
• Chest Clip
• Seat Pad Set
• 12V Power Cord*
• Removable Cup Holder (1)
• Lower Anchor Belt
• Locking Clip
• Instructions
For parts availability and
questions, call, text, or chat.
If requested color is not
available, similar color will be
substituted.
Applicable tax and shipping &
handling will also be added.
*Pria Chill model only
Replacement Parts List
(on select models)

4358-8405 8.11.23
Pria Chill All-in-One
Pria Max All-in-One
Pria All-in-One
Convertible Car Seat
Your model may look different than one shown on cover.
Read all instructions BEFORE USING this car seat.
KEEP INSTRUCTIONS FOR FUTURE USE.
Failure to follow the warnings on the labels and
in the instruction manual can result in serious injury
or death to your child. Serious injury may include
paralysis and/or permanent brain injury.

Welcome to the Maxi-Cosi Family!
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.
Measure
Your Child
Adjust Car Seat to
Fit Your Child
Your child’s safety is worth the time it will take to read
and follow these instructions.
Ready? Let’s go!
Pages 1, 2, 5-8 will introduce you to the parts of the car
seat.
The back cover of this manual and page 77 has our
contact information.
If at any point you would like assistance, please feel free to
reach out to us.

Install Car Seat
into Your Vehicle
Secure Your Child
in Car Seat
©2023 Dorel Juvenile Group, Inc. [phone] www.maxicosi.com.
Styles and colors may vary. Les styles et les couleurs peuvent varier. Made
in USA from American and imported parts (including seat pad). Fabriqué aux
ÉTATS-UNIS. Distributed by (distribué par) Dorel Juvenile Group, Inc., 2525
State St., Columbus, IN 47201-7494. Dorel Juvenile Canada, 2233 Argentia
Road, Suite 110, Mississauga, ON L5N 2X7. Importado y Distribuido en Chile
por: Comercial e Industrial Silfa S.A. - San Ignacio 0201 / Parque Industrial
Portezuelo Quilicura, Santiago Chile. Fono (562) 2339 9000. En Perú por:
Comexa S.A. - Los Libertadores 455 – San Isidro, Lima – Perú. Fono (511)
4469014. En Centro América, Caribe y Ecuador por: Best Brands Group S.A.
– Av. Balboa, Bay Mall Plaza, Planta Baja, local 9, Panamá. - Fono: (507) 300
2884. En Colombia por: Baby Universe S.A.S. Vía 40 No. 77-29, Barranquilla,
Colombia - Fono: [phone] Importador: DJGM, S.A. DE C.V. Gabriel
Mancera No. 1041 Col. Del Valle, Benito Juárez C.P. 03100
México, Ciudad de México R.F.C. DJG140305GN9
Tel. [phone]

1 Getting Started
1 Parts of Car Seat
3 Choosing Car Seat Mode
5 Accessory Use
9 VentMax Fan System Usage (Chill Model Only)
11 Making Adjustments to Car Seat
11 Changing Buckle Position
13 Buckle Adjustments for Smaller Infants
15 Reclining Car Seat
16 Changing Headrest/Harness Height
17 Rear-Facing Section
19 Rear-Facing Child Fit
22 Rear-Facing Vehicle Install
29 Forward-Facing Section
31 Forward-Facing Child Fit
34 Forward-Facing Vehicle Install
42 Securing Child in Car Seat
47 Booster Seat Section
49 Storing Harness System
Contents

54 Booster Seat Use in Vehicle
57 Booster Seat Child Fit
58 Wash & Care
58 Removing Seat Pad Set
63 Cleaning Parts of Car Seat &
Installing Seat Pad Set
64 LATCH & Vehicle Belt Information
64 LATCH: Lower Anchor Belt
66 Vehicle Belts
70 Top Tether
71 Safety Information
71 Child Restraint Use
72 Vehicle Seating Position
73 Installation in Vehicle
74 Replacement & Expiration
75 Registration & Safety Notices
76 Aircraft Information
77 Warranty
78 FCC Information

Chest Clip
Harness Covers*
Harness System
Buckle Cover*
Pria 3 in 1
Buckle
Shoulder
Harness Slots
Your model may look dierent than one shown.
Harness Straps
1Parts of Car Seat
Pria 3 in 1
Adjustable Headrest
Recline Handle
(under pad)
Harness
Adjustment Strap
Headrest/Harness
Adjustment Handle
Power Indicator
Light (in headrest
handle)†
LATCH: Lower Anchor Belt
(bag may be in the
Forward-Facing Belt Path)
Temperature Sensor
(behind pad;
not visible)†
In and Out Harness
Holders (on select
models)
Removable
Cup Holders*
Harness Covers*
Head Pillow*
Back Pillow*
Small Infant
Positioning Pillow*
Harness Release
Lever (through
opening in pad)

Pria 3 in 1
*See pages 5-8 for Accessory Use.
†Pria Chill model only
2
LATCH: Lower
Anchor Belt Storage
Attachments
Tether Strap
12V Accessory
Power Port†
VentMax
Fans (3) -
on back of
adjustable
headrest†
Tether Storage
Attachment
Instruction
Manual
Storage
Harness Strap
Splitter Plate
Tether Strap Adjuster
Pria 3 in 1
Forward-
Facing
Belt Path
Rear-Facing
Level Line
Base
Rear-Facing
Belt Path
Pria 3 in 1
Pria Chill 12V
Accessory Power Cord
Power
Indicator
Light
On/Off
Switch
I=On
O=Off

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 modes within
the limits and fit requirements of the car seat.
Infants and Toddlers
Must use the seat in rear-facing mode as long as possible, which is
until the child reaches the maximum weight or height limit for rear-
facing mode.
Toddlers and Preschoolers
Once they are facing forward, the child must use the seat in forward-
facing mode with a harness for as long as possible, which is until the
child reaches the maximum weight or height limit for forward-facing
mode.
School-Aged Children
Once they have outgrown their forward-facing car seat, the child must
use a belt-positioning booster seat until the vehicle’s lap and shoulder
seat belt fit properly.
If you have any questions regarding the proper mode for your child,
please see the back cover of this manual for our contact information.
WARNING:
Choosing Car Seat Mode
3
Failure to follow these instructions may result in serious
injury or death to your child. Serious injury can include
paralysis and/or permanent brain injury.
Be certain to measure your child’s weight and height (do not
guess) before choosing this car seat’s mode.

Rear-Facing Mode
4-40 lb (1.8-18 kg) and
19-40 in. (48-101.6 cm)
Children under 1 year of age MUST ride Rear-
Facing and your child MUST remain rear-facing
until they outgrow any one of the above.
Rear-Facing Section PAGE 17
Rear-Facing Child Fit PAGE 19
Rear-Facing Vehicle Install PAGE 22
Forward-Facing Mode
22-65 lb (10.1-29 kg) and
29-49 in. (73.6-125 cm)
Forward-Facing Section
PAGE 29
Forward-Facing Child Fit
PAGE 31
Forward-Facing Vehicle Install PAGE 34
Booster Seat Mode
40-100 lb (18.1-45.4 kg) and
43-52 in. (110.1-132.1 cm)
Booster Seat Section
PAGE 47
Storing Harness System
PAGE 49
Booster Seat Use in Vehicle
PAGE 54
Booster Seat Child Fit
PAGE 57
4

5
Buckle Cover
(on select models)
For Use in Rear-Facing Mode
or Forward-Facing Mode
To remove, undo the buckle and pull
the buckle cover off the buckle.
Head Pillow & Back Pillow
(on select models)
Only For Use in Rear-Facing Mode
The head and back pillows MUST be
used together.
To remove head pillow, pull it out from
behind the back pillow.
To remove back pillow, loosen the
harness straps and slide pillow out from
behind the harness straps.
Pria Max
Pria Max
Accessory Use

Harness Covers
(on select models)
For Use in Rear-Facing Mode or
Forward-Facing Mode
To remove, pull the fastening strips
apart and pull the harness covers off
of the harness straps.
Pria Max
Pria Max
EZ Out Buckle Cover
(on select models)
For Use in Rear-Facing Mode
or Forward-Facing Mode
To install,slide buckle into opening in
front of buckle cover.
NOTE: Slide buckle cover only through slot in pad and not through
buckle slot in shell. It lays flat underneath the pad as shown.
To remove, pull up on buckle cover and slide it off of the buckle and
pull it out of the buckle slot in the seat pad.
continued on next page
The harness covers help provide comfort to your child’s neck.
If the harness covers will not allow proper positioning of the
chest clip or interfere with getting a tight enough harness fit for a
smaller infant, remove and do not use.
Store until your child is large enough to use the harness covers
while maintaining a properly fitting harness.
6

7
Small Infant Positioning Pillow
Only For Use in Rear-Facing Mode
When using the small infant
positioning pillow, you must also
use the back and head pillows.
This pillow helps position your infant in the seat in order to achieve
proper harness fit.
To determine if the pillow is needed:
1. Place headrest in lowest position.
2. Place infant in car seat without the pillow.
3. Make sure the infant’s bottom and back are flat against the car seat.
Pria Max
Front View
Back View
EZ Out Harness Covers
(on select models)
For Use in Rear-Facing Mode or
Forward-Facing Mode
To remove, undo fasteners on headrest pad.
Pull the fastening strips on covers apart. Pull
harness straps out of covers. Slide covers out
from behind headrest pad.
To install, undo fasteners on headrest. With
the back of the harness covers facing you
slide covers behind headrest pad. Place
harness straps into covers. Fasten headrest
fasteners & harness covers.

8
Use Pillow if
Shoulder Harness
Slots are Above
Shoulders
Pria Max
Do Not Use
Pillow if Shoulder
Harness Slotsare At
or Below Shoulders
Pria Max
Removable Cup Holder(s)
(on select models)
For Use in All Modes
The cup holder(s) is top-rack dishwasher safe.
To remove cup holder, twist the cup holder
counterclockwise. Pull it out of the slot in the car
seat.
Pria Max
Pria Max
Check often to see how much your infant has grown.
Remove the infant pillow once they can sit in the car seat without the
infant pillow and the harness slots are at or below their shoulders
AND you can still achieve a snug harness fit.
To remove, lift the infant pillow up and pull the buckle & buckle cover
down out of the buckle slot in the infant pillow.
To install, feed the buckle & buckle cover up into the 1st or 2nd buckle
slot in the infant pillow, matching the buckle slot in the car seat.
To learn how to check buckle position, see pages 21 & 33, step 7.
To learn how to check harness tightness, see pages 42-46.

9VentMax Fan System
Usage (Chill model only)
From Back of
Car Seat, Plug
Power Cord into
12V Accessory
Power Port on
Back of Car Seat
1
Raise the headrest to its highest position
in forward-facing mode. This will create the
longest distance between the car seat and
the accessory port in your vehicle, ensuring
the power cord will remain plugged in
securely.
If your vehicle is equipped with multiple 12V accessory ports,
choose the one closest to the location of your car seat. If not, or if
you choose not to use the Pria Chill VentMax feature, store the 12V
accessory cord in a safe place for future use.
Route the power cord to the 12V vehicle accessory
port & plug:
• under/between vehicle seats
• under car seat and out front if accessory port is in front of the
seat
• out of the child’s reach
• under car mats
Plug in power cord to vehicle accessory port.

When the 12V accessory power cord is properly connected
and receiving power, the indicator light, located in the headrest
handle, will blink twice. Refer to your vehicle instruction manual
for specific details regarding your electrical system.
• When the temperature sensor reading is too low to make
ventilation necessary, the fan system and the indicator light will
remain off.
• When the temperature sensor reading is warm enough for the
ventilation function to engage, the fans will turn on, and the
indicator light will glow steadily.
• The system and indicator light will turn off automatically when
the temperature sensor reading reaches optimal temperature.
• If the voltage sensor detects a loss of voltage from the vehicle,
the unit will automatically power down. The indicator light may,
temporarily, continuously flash during this powering down
process.
• Pria Chill requires a vehicle accessory port and will not operate
via USB.
• Pria Chill VentMax fan system is designed to run only when
necessary.
• Aircraft electrical outlets are typically not compatible with the
VentMax system.
DO NOT use the Pria Chill fan system with a non-approved 12V
power cord.
STRANGULATION HAZARD! Children have STRANGLED in cords.
DO NOT allow children to handle the cord. DO NOT use the cord
with any other devices. DO NOT remove the warning label on the
cord.
WARNING:
10

1
2
3
1
2
31
2
3
1
2
3
1
2
31
2
3
Undo Buckle
It may be easier to undo the
buckle by pressing in towards
the top of the button.
Recline Car Seat
Reach under the car seat.
Rotate the buckle’s metal
retainer and push it up
through the car seat.
To recline seat, see page 15.
From Top of Car Seat,
Pull Buckle &
Buckle Cover Out of
Car Seat & Pad
1
2
3
1
2
31
2
3
11 Changing Buckle
Position
WARNING:
Failure to place buckle’s metal retainer completely through
pad and child restraint can result in serious injury or death.
Serious injury can include paralysis and/or permanent brain
damage.
1
2
3
1
2
3
1
2
3
1
2
3

1
2
3
1
2
31
2
3
Reach Under Car
Seat Between Base
& Car Seat
Pull the buckle’s metal
retainer completely through
the seat pad and car seat.
1
2
3
1
2
31
2
3
5
12
4
Check Buckle
Pull the buckle up to make
sure it is secured.
The buckle MUST NOT
pull out.
1
2
3
1
2
3
1
2
3
6
For Rear-Facing Child Fit, see page 19.
For Forward-Facing Child Fit, see page 31.
To learn how to check harness tightness, see pages 42-46.
If you cannot achieve a snug harness fit for your child, see
pages 11-14 & 16.
1
2
3
1
2
31
2
3
Insert Buckle’s
Metal Retainer
into Buckle Slot
Closest to Child
Tuck the ends of the buckle
cover into the same pad
slot as the buckle.
For EZ Out Style: Slide the
buckle cover into the seat
pad slot closest to the child
& then complete the rest of
step 4 above.

With Buckle in 1st
Slot, Fully Recline
Car Seat
If you need to move the
buckle to the 1st slot, see
pages 11-12.
Pull Front of
Car Seat Pad Up
13 Buckle Adjustments for
Smaller Infants
1
2
If you cannot achieve a snug harness fit for your child, you may
need to adjust the buckle strap length and location as shown in
this section.
The harness system MUST be installed correctly.
DO NOT use a child restraint with damaged harness straps.
WARNING:

continued on next page
14
From Top of Car
Seat, Lay Metal
Retainer Flat
Against Car Seat
Tuck Car Seat Pad
Around Front of
Car Seat & Check
Buckle
Pull the buckle up to
make sure it is secured.
The buckle MUST NOT
pull out.
Reach Under
Car Seat
Pull the buckle’s metal
retainer down and
then push it up into the
middle slot as shown.
4
5
3