Scion Q EV. Service Manual - part 3

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Front passenger occupant classification 

system

Your vehicle is equipped with a front passenger occupant classi-
fication system. This system detects the conditions of the front
passenger seat and activates or deactivates the devices for the
front passenger.

SRS warning light

“AIR BAG OFF” indicator light

“AIR BAG ON” indicator light

Front passenger’s seat belt reminder light

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2
3
4

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Adult

*

1

Condition and operation in the front passenger occupant classi-
fication system

Indicator/

warning light

“AIR BAG ON” and “AIR BAG OFF” 

indicator lights

“AIR BAG ON”

SRS warning light

Off

Front passenger’s seat belt reminder light

Off

*

2

 

or 

Flashing

*

3

Devices

Front passenger airbag

Activated

Side airbag 

on the front passenger seat

Curtain shield airbag 

in the front passenger side

Front passenger knee airbag

Seat cushion airbag 

in the front passenger side

Activated

*

2

or

deactivated

*

3

Front passenger’s seat belt pretensioner

Activated

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Child

*

4

 or child restraint system

*

5

■

Unoccupied

Indicator/

warning light

“AIR BAG ON” and “AIR BAG OFF” 

indicator lights

“AIR BAG 

OFF”

*

6

SRS warning light

Off

Front passenger’s seat belt reminder light

Off

*

2

 

or 

Flashing

*

3

Devices

Front passenger airbag

Deactivated

Side airbag 

on the front passenger seat

Activated

Curtain shield airbag 

in the front passenger side

Front passenger knee airbag

Deactivated

Seat cushion airbag 

in the front passenger side

Front passenger’s seat belt pretensioner

Activated

Indicator/

warning light

“AIR BAG ON” and “AIR BAG OFF” 

indicator lights

Not illuminated

SRS warning light

Off

Front passenger’s seat belt reminder light

Devices

Front passenger airbag

Deactivated

Side airbag 

on the front passenger seat

Activated

Curtain shield airbag 

in the front passenger side

Front passenger knee airbag

Deactivated

Seat cushion airbag 

in the front passenger side

Front passenger’s seat belt pretensioner

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There is a malfunction in the system

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1

: The system judges a person of adult size as an adult. When a smaller

adult sits in the front passenger seat, the system may recognize him/her
as a child depending on his/her physique and posture.

*

2

: In the event the front passenger is wearing a seat belt.

*

3

: In the event the front passenger does not wear a seat belt.

*

4

: When a larger child who has outgrown a child restraint system sits in the

front passenger seat, the system may recognize him/her as an adult
depending on his/her physique or posture.

*

5

: Never install a rear-facing child restraint system on the front passenger

seat. A forward-facing child restraint system should only be installed on
the front passenger seat when it is unavoidable. (

P. 52)

*

6

: In case the indicator light is not illuminated, consult this manual on how

to install the child restraint system properly. (

P. 57)

Indicator/

warning light

“AIR BAG ON” and “AIR BAG OFF” 

indicator lights

“AIR BAG OFF”

SRS warning light

On

Front passenger’s seat belt reminder light

Off

Devices

Front passenger airbag

Deactivated

Side airbag 

on the front passenger seat

Activated

Curtain shield airbag 

in the front passenger side

Front passenger knee airbag

Deactivated

Seat cushion airbag 

in the front passenger side

Front passenger’s seat belt pretensioner

Activated

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CAUTION

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Front passenger occupant classification system precautions

Observe the following precautions regarding the front passenger occupant
classification system. 
Failure to do so may cause death or serious injury.

●

Wear the seat belt properly.

●

Make sure the front passenger’s seat belt plate has not been left inserted
into the buckle before someone sits in the front passenger seat.

●

Make sure the “AIR BAG OFF” indicator light is not illuminated when using
the seat belt extender for the front passenger seat. If the “AIR BAG OFF”
indicator light is illuminated, disconnect the extender tongue from the seat
belt buckle, and reconnect the seat belt. Reconnect the seat belt extender
after making sure the “AIR BAG ON” indicator light is illuminated. If you
use the seat belt extender while the “AIR BAG OFF” indicator light is illumi-
nated, the SRS airbags for the front passenger will not activate, which
could cause death or serious injury in the event of a collision.

●

Do not apply a heavy load to the front passenger seat or equipment.

●

Do not put weight on the front passenger seat by putting your hands or
feet on the front passenger seat seatback from the rear passenger seat.

●

Do not let a rear passenger lift the front passenger seat with their feet or
press on the seatback with their legs.

●

Do not put objects under the front passenger seat.

●

Do not recline the front passenger seatback so far that it touches a rear
seat. This may cause the “AIR BAG OFF” indicator light to be illuminated,
which indicates that the SRS airbags for the front passenger will not
deploy in the event of a severe accident. If the seatback touches the rear
seat, return the seatback to a position where it does not touch the rear
seat. Keep the front passenger seatback as upright as possible when the
vehicle is moving. Reclining the seatback excessively may lessen the
effectiveness of the seat belt system.

●

If an adult sits in the front passenger seat, the “AIR BAG ON” indicator
light is illuminated. If the “AIR BAG OFF” indicator is illuminated, ask the
passenger to sit up straight, well back in the seat, feet on the floor, and
with the seat belt worn correctly. If the “AIR BAG OFF” indicator still
remains illuminated, either ask the passenger to move to the rear seat, or
if that is not possible, move the front passenger seat fully rearward.

●

When it is unavoidable to install a forward-facing child restraint system on
the front passenger seat, install the child restraint system on the front pas-
senger seat in the proper order. (

P. 57)

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CAUTION

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Front passenger occupant classification system precautions

●

Do not modify or remove the front seats.

●

Do not kick the front passenger seat or subject it to severe impact. Other-
wise, the SRS warning light may come on to indicate a malfunction of the
detection system. In this case, contact your Scion dealer immediately.

●

Child restraint systems installed on the rear seat should not contact the
front seatbacks.

●

Do not use a seat accessory, such as a cushion and seat cover, that cov-
ers the seat cushion surface.

●

Do not modify or replace the upholstery of the front seat.

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Safety information for children

● It is recommended that children sit in the rear seats to avoid acci-

dental contact with the shift lever, wiper switch etc.

● Use the window lock switch to avoid children opening the door

while driving or operating the power window accidentally.

● Do not let small children operate equipment which may catch or

pinch body parts, such as the power window, hood, back door,
seats etc.

Observe the following precautions when children are in the vehi-
cle.
Use a child restraint system appropriate for the child, until the
child becomes large enough to properly wear the vehicle’s seat
belt.

CAUTION

Never leave children unattended in the vehicle, and never allow children to
have or use the key.

Children may be able to start the vehicle or shift the vehicle into neutral.
There is also a danger that children may injure themselves by playing with
the windows or other features of the vehicle. In addition, heat build-up or
extremely cold temperatures inside the vehicle can be fatal to children.

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Child restraint systems

Studies have shown that installing a child restraint on a rear seat is
much safer than installing one on the front passenger seat.
● Choose a child restraint system that suits your vehicle and is appro-

priate to the age and size of the child. 

● For installation details, follow the instructions provided with the child

restraint system.
General installation instructions are provided in this manual. 
(

P. 57)

A child restraint system for a small child or baby must itself be
properly restrained on the seat with the lap portion of the lap/
shoulder belt.

The laws of all 50 states of the U.S.A. now require the use of
child restraint systems.

Points to remember

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Child restraint systems are classified into the following 3 types
according to the age and size of the child:

Types of child restraints



Rear facing 

 Infant seat/con-

vertible seat



Forward facing 

 Convertible

seat



Booster seat

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When installing the child restraint system on the rear seat
Adjust the front seat position so that the seat rails are completely covered by

the covers bearing a triangle mark.

■

When installing the child restraint system on the front passenger seat

■

Selecting an appropriate child restraint system

●

Use a child restraint system appropriate for the child until the child becomes

large enough to properly wear the vehicle’s seat belts.

●

If the child is too large for a child restraint system, sit the child on a rear seat

and use the vehicle’s seat belt. (P. 26)

Cover
Triangle mark
Seat rail

Slide the front seat forward until the seat

rail is no longer visible, when the cover tri-

angle section is viewed from above.

When you have to use a child restraint

system on the front passenger seat,

adjust the following:

●

The seatback to the most upright posi-

tion

●

The seat cushion to the fully rearward

position

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CAUTION

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Child restraint precautions

●

For effective protection in automobile accidents and sudden stops, a child
must be properly restrained, using a seat belt or child restraint system
depending on the age and size of the child. Holding a child in your arms is
not a substitute for a child restraint system. In an accident, the child can be
crushed against the windshield, or between you and the vehicle’s interior.

●

Scion strongly urges the use of a proper child restraint system that con-
forms to the size of the child, installed on the rear seat. According to acci-
dent statistics, the child is safer when properly restrained in the rear seat
than in the front seat.

●

Never install a rear-facing child restraint system on the front passenger
seat even if the “AIR BAG OFF” indicator light is illuminated. In the event
of an accident, the force of the rapid inflation of the SRS front passenger
airbag can cause death or serious injury to the child if the rear-facing child
restraint system is installed on the front passenger seat.

●

A forward-facing child restraint system may be installed on the front pas-
senger seat only when it is unavoidable. A child restraint system that
requires a top tether strap should not be used in the front passenger seat
since there is no top tether strap anchor for the front passenger seat.
Adjust the seatback as upright as possible and always move the seat as
far back as possible even if the “AIR BAG OFF” indicator light is illumi-
nated, because the SRS front passenger airbag could inflate with consid-
erable speed and force. Otherwise, the child may be killed or seriously
injured.

●

Do not use the seat belt extender when installing a child restraint system
on the front or rear passenger seat. If installing a child restraint system
with the seat belt extender connected to the seat belt, the seat belt will not
securely hold the child restraint system, which could cause death or seri-
ous injury to the child or other passengers in the event of a sudden stop,
sudden swerve or an accident.

●

Do not allow the child to lean his/her head or any part of his/her body
against the door or the area of the seat, front and rear pillars, roof side
rails or rear roof headlining from which the SRS side airbags or SRS cur-
tain shield airbags or SRS rear window curtain shield airbag deploy even if
the child is seated in the child restraint system. It is dangerous if the SRS
side and curtain shield airbags and SRS rear window curtain shield airbag
inflate, and the impact could cause death or serious injury to the child.

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CAUTION

■

Child restraint precautions

●

Make sure you have complied with all installation instructions provided by
the child restraint manufacturer and that the system is properly secured. If
it is not secured properly, it may cause death or serious injury to the child
in the event of a sudden stop, sudden swerve or an accident.

■

When children are in the vehicle

Do not allow children to play with the seat belt. If the seat belt becomes
twisted around a child’s neck, it may lead to choking or other serious injuries
that could result in death.
If this occurs and the buckle cannot be unfastened, scissors should be used
to cut the belt.

■

When the child restraint system is not in use

●

Keep the child restraint system properly secured on the seat even if it is
not in use. Do not store the child restraint system unsecured in the pas-
senger compartment.

●

If it is necessary to detach the child restraint system, remove it from the
vehicle. This will prevent it from injuring passengers in the event of a sud-
den stop, sudden swerve or an accident.

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Installing child restraints

Child restraint LATCH anchors

LATCH anchors are provided for
the rear seats. (Buttons displaying
the location of the anchors are
attached to the seats)

Seat belts equipped with a child
restraint locking mechanism
(ALR/ELR belts except driver’s
seat belt) (

P. 28)

Follow the child restraint system manufacturer’s instructions.
Firmly secure child restraints to the seats using the LATCH
anchors or a seat belt. Attach the top tether strap when installing
a child restraint.
The lap/shoulder belt can be used if your child restraint system
is not compatible with the LATCH (Lower Anchors and Tethers
for Children) system.

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Anchor brackets (for top tether
strap)

An anchor bracket is provided for
each rear seats.



Type A

Widen the gap between the seat cushion and seatback slightly.

Latch the hooks of the lower
straps onto the LATCH
anchors. If the child restraint
has a top tether strap, the top
tether strap should be latched
onto the top tether strap anchor. 

Installation with LATCH system

1

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

Type B

Widen the gap between the seat cushion and seatback slightly.

Latch the buckles onto the
LATCH anchors. If the child
restraint has a top tether strap,
the top tether strap should be
latched onto the top tether strap
anchor. 

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Rear-facing

 — 

Infant seat/convertible seat

Place the child restraint sys-
tem on the rear seat facing
the rear of the vehicle.

Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.

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2

Installing child restraints using a seat belt (child restraint lock
function belt)

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Fully extend the shoulder belt
and allow it to retract to put it
in lock mode. In lock mode,
the belt cannot be extended.

While pushing the child
restraint system down into
the rear seat, allow the
shoulder belt to retract until
the child restraint system is
securely in place.

After the shoulder belt has
retracted to a point where there
is no slack in the belt, pull the
belt to check that it cannot be
extended. 

■

Forward-facing

 — 

Convertible seat

Place the child restraint sys-
tem on the seat facing the
front of the vehicle.

Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.

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