Scion Q EV. Service Manual - part 2

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CAUTION

Observe the following precautions to reduce the risk of injury in the event of
sudden braking, sudden swerving or an accident.
Failure to do so may cause death or serious injury.

■

Wearing a seat belt

●

Ensure that all passengers wear a seat belt.

●

Always wear a seat belt properly.

●

Each seat belt should be used by one person only. Do not use a seat belt
for more than one person at once, including children.

●

Scion recommends that children be seated in the rear seat and always
use a seat belt and/or an appropriate child restraint system.

●

To achieve a proper seating position, do not recline the seat more than
necessary. The seat belt is most effective when the occupants are sitting
up straight and well back in the seats.

●

Do not wear the shoulder belt under your arm.

●

Always wear your seat belt low and snug across your hips.

●

Do not get the seat belt caught under
the adjustment lever when wearing it.

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CAUTION

■

Pregnant women

■

People suffering illness

Obtain medical advice and wear the seat belt in the proper way. (

P. 26)

■

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.

■

Seat belt pretensioners

●

Do not place anything, such as a cushion, on the front passenger’s seat.
Doing so will disperse the passenger’s weight, which prevents the sensor
from detecting the passenger’s weight properly. As a result, the seat belt
pretensioner for the front passenger’s seat may not activate in the event of
a collision.

●

If the pretensioner has activated, the SRS warning light will come on. In
that case, the seat belt cannot be used again and must be replaced at
your Scion dealer.

Obtain medical advice and wear the seat
belt in the proper way. (

P. 26)

Women who are pregnant should posi-
tion the lap belt as low as possible over
the hips in the same manner as other
occupants, extending the shoulder belt
completely over the shoulder and avoid-
ing belt contact with the rounding of the
abdominal area.

If the seat belt is not worn properly, not
only the pregnant woman, but also the
fetus could suffer death or serious injury
as a result of sudden braking or a colli-
sion.

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CAUTION

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Seat belt damage and wear

●

Do not damage the seat belts by allowing the belt, plate, or buckle to be
jammed in the door.

●

Inspect the seat belt system periodically. Check for cuts, fraying, and loose
parts. Do not use a damaged seat belt until it is replaced. Damaged seat
belts cannot protect an occupant from death or serious injury.

●

Ensure that the belt and plate are locked and the belt is not twisted.
If the seat belt does not function correctly, immediately contact your Scion
dealer.

●

Replace the seat assembly, including the belts, if your vehicle has been
involved in a serious accident, even if there is no obvious damage.

●

Do not attempt to install, remove, modify, disassemble or dispose of the
seat belts. Have any necessary repairs carried out by your Scion dealer.
Inappropriate handling may lead to incorrect operation.

■

Using a seat belt extender

●

Do not wear the seat belt extender if you can fasten the seat belt without
the extender.

●

Do not use the seat belt extender when installing a child restraint system
because the belt will not securely hold the child restraint system, increas-
ing the risk of death or serious injury in the event of an accident.

●

The personalized extender may not be safe on another vehicle, when
used by another person, or at a different seating position other than the
one originally intended.

NOTICE

■

When using a seat belt extender

When releasing the seat belt, press on the buckle release button on the
extender, not on the seat belt.
This helps prevent damage to the vehicle interior and the extender itself.

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SRS airbags

The SRS airbags inflate when the vehicle is subjected to certain
types of severe impacts that may cause significant injury to the
occupants. They work together with the seat belts to help reduce
the risk of death or serious injury.

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◆

SRS front airbags

SRS driver airbag/front passenger airbag
Can help protect the head and chest of the driver and front passen-
ger from impact with interior components.

SRS knee airbags
Can help provide driver and front passenger protection.

SRS seat cushion airbags 
Can help restrain the driver and front passenger.

◆

SRS side and curtain shield airbags

SRS side airbags
Can help protect the torso of the front seat occupants.

SRS curtain shield airbags
Can help protect primarily the head of occupants.

◆

Other SRS airbag

SRS rear window curtain shield airbag 
Can help protect primarily the head of rear occupants.

1

2

3

4

5

6

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SRS airbag system components

Rear impact sensors

Side impact sensors (front)

Curtain shield airbags

“AIR BAG ON” and “AIR BAG
OFF” indicator lights

Side airbags

Front passenger seat cushion
airbag

Front passenger airbag

Knee airbags

Seat belt pretensioners and
force limiters

Side impact sensors (front
door)

Front passenger occupant
classification system (ECU
and sensors)

Front impact sensors

Airbag sensor assembly

Front passenger’s seat belt
buckle switch

Rear window curtain shield
airbag

SRS warning light

Driver airbag

Driver’s seat belt buckle
switch

Driver’s seat position sensor

Driver seat cushion airbag

1
2
3
4

5
6

7
8
9

10

11

12
13
14

15

16
17
18

19
20

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Your vehicle is equipped with ADVANCED AIRBAGS designed based
on the US motor vehicle safety standards (FMVSS208). The airbag
sensor assembly (ECU) controls airbag deployment based on infor-
mation obtained from the sensors etc. shown in the system compo-
nents diagram above. This information includes crash severity and
occupant information. As the airbags deploy, a chemical reaction in
the inflators quickly fills the airbags with non-toxic gas to help restrain
the motion of the occupants.

CAUTION

■

SRS airbag precautions

Observe the following precautions regarding the SRS airbags. 
Failure to do so may cause death or serious injury.

●

The driver and all passengers in the vehicle must wear their seat belts
properly.
The SRS airbags are supplemental devices to be used with the seat belts.

●

The SRS driver airbag deploys with considerable force, and can cause
death or serious injury especially if the driver is very close to the airbag.
The National Highway Traffic Safety Administration (NHTSA) advises:

Since the risk zone for the driver’s airbag is the first 2 - 3 in. (50 - 75 mm)
of inflation, placing yourself 10 in. (250 mm) from your driver airbag pro-
vides you with a clear margin of safety. This distance is measured from
the center of the steering wheel to your breastbone. If you sit less than 10
in. (250 mm) away now, you can change your driving position in several
ways:

• Move your seat to the rear as far as you can while still reaching the ped-

als comfortably.

• Slightly recline the back of the seat. 

Although vehicle designs vary, many drivers can achieve the 10 in. (250
mm) distance, even with the driver seat all the way forward, simply by
reclining the back of the seat somewhat. If reclining the back of your
seat makes it hard to see the road, raise yourself by using a firm, non-
slippery cushion, or raise the seat if your vehicle has that feature.

• If your steering wheel is adjustable, tilt it downward. This points the air-

bag toward your chest instead of your head and neck.

The seat should be adjusted as recommended by NHTSA above, while
still maintaining control of the foot pedals, steering wheel, and your view
of the instrument panel controls.

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CAUTION

■

SRS airbag precautions

●

The SRS front passenger airbag also deploys with considerable force, and
can cause death or serious injury especially if the front passenger is very
close to the airbag. The front passenger seat should be as far from the air-
bag as possible with the seatback adjusted, so the front passenger sits
upright.

●

Improperly seated and/or restrained infants and children can be killed or
seriously injured by a deploying airbag. An infant or child who is too small
to use a seat belt should be properly secured using a child restraint sys-
tem. Scion strongly recommends that all infants and children be placed in
the rear seats of the vehicle and properly restrained. The rear seats are
safer for infants and children than the front passenger seat. (

P. 52)

●

If the seat belt extender has been con-
nected to the front seat belt buckle but
the seat belt extender has not also been
fastened to the latch plate of the seat
belt, the SRS front airbags will judge
that the driver and front passenger are
wearing the seat belt even though the
seat belt has not been connected. In
this case, the SRS front airbags may
not activate correctly in a collision,
resulting in death or serious injury in the
event of a collision. Be sure to wear the
seat belt with the seat belt extender.

●

Do not sit on the edge of the seat or
lean against the dashboard.

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CAUTION

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SRS airbag precautions

●

Do not allow a child to stand in front of
the SRS front passenger airbag unit or
sit on the knees of a front passenger.

●

Do not allow the front seat occupants to
hold items on their knees.

●

Do not lean against the door, the roof
side rail or the front, side and rear pil-
lars.

●

Do not allow anyone to kneel on the
passenger seat toward the door or put
their head or hands outside the vehicle.

●

Do not allow anyone to kneel on the
rear seat toward the back door.

●

Do not attach anything to or lean any-
thing against areas such as the dash-
board, steering wheel pad and lower
portion of the instrument panel. 
These items can become projectiles
when the SRS driver, front passenger
and knee airbags deploy.

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CAUTION

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SRS airbag precautions

●

If a vinyl cover is put on the area where the SRS knee airbags will deploy,
be sure to remove it.

●

Do not use seat accessories which cover the parts where the SRS side
airbags and SRS seat cushion airbags inflate as they may interfere with
inflation of the SRS airbags. Such accessories may prevent the SRS side
airbags and SRS seat cushion airbags from activating correctly, disable
the system or cause the SRS side airbags and SRS seat cushion airbags
to inflate accidentally, resulting in death or serious injury.

●

Do not strike or apply significant levels of force to the area of the SRS air-
bag components. 
Doing so can cause the SRS airbags to malfunction.

●

Do not touch any of the component parts immediately after the SRS air-
bags have deployed (inflated) as they may be hot.

●

If breathing becomes difficult after the SRS airbags have deployed, open a
door or window to allow fresh air in, or leave the vehicle if it is safe to do
so. Wash off any residue as soon as possible to prevent skin irritation. 

●

If the areas where the SRS airbags are stored, such as the steering wheel
pad, front and rear pillar, roof side rail garnishes and rear roof headlining
are damaged or cracked, have them replaced by your Scion dealer.

●

Do not place anything, such as a cushion, on the front passenger’s seat.
Doing so will disperse the passenger’s weight, which prevents the sensor
from detecting the passenger’s weight properly. As a result, the SRS front
airbags for the front passenger may not deploy in the event of a collision.

●

Do not attach anything to areas such as
a door, windshield glass, side and back
door glass, front and rear pillar, roof
side rail, rear roof headlining or assist
grip. (Except for the speed limit label
P. 365)

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If the SRS airbags deploy (inflate)

●

Bruising and slight abrasions may result from contact with a deploying
(inflating) SRS airbag.

●

A loud noise and white powder will be emitted.

●

Parts of the airbag module (steering wheel hub, airbag cover and inflator) as
well as the front seats, parts of the front and rear pillars, roof side rails and
rear roof headlining, may be hot for several minutes. The airbag itself may
also be hot.

●

The windshield may crack.

CAUTION

■

Modification and disposal of SRS airbag system components

Do not dispose of your vehicle or perform any of the following modifications
without consulting your Scion dealer. The SRS airbags may malfunction or
deploy (inflate) accidentally, causing death or serious injury.

●

Installation, removal, disassembly and repair of the SRS airbags

●

Repairs, modifications, removal or replacement of the steering wheel,
instrument panel, dashboard, seats or seat upholstery, front, side and rear
pillars, roof side rails or roof headlining

●

Repairs or modifications of the front fender, front and rear bumper, or side
or rear of the occupant compartment

●

Installation of snow plows, winches, etc. to the front grille (bull bars or kan-
garoo bar etc.)

●

Installation of racks etc. to the back door (strap racks, bicycle rack etc.)

●

Modifications to the vehicle’s suspension system

●

Installation of electronic devices such as mobile two-way radios and CD
players

●

Modifications to your vehicle for a person with a physical disability

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SRS airbag deployment conditions (SRS front airbags)

●

The SRS front airbags will deploy in the event of an impact that exceeds the
set threshold level (the level of force corresponding to an approximately 12 -
18 mph [20 - 30 km/h] frontal collision with a fixed wall that does not move or
deform).

However, this threshold velocity will be considerably higher in the following
situations:

• If the vehicle strikes an object, such as a parked vehicle or sign pole,

which can move or deform on impact

• If the vehicle is involved in an underride collision, such as a collision in

which the front of the vehicle “underrides”, or goes under, the bed of a
truck

●

Depending on the type of collision, it is possible that only the seat belt pre-
tensioners will activate.

●

The SRS front airbags for the front passenger will not activate if there is no
passenger sitting in the front passenger seat. However, the SRS front air-
bags for the front passenger may deploy if luggage is put in the seat, even if
the seat is unoccupied.

●

The SRS seat cushion airbags on the front seats will not operate if the occu-
pant is not wearing a seat belt.

■

SRS airbag deployment conditions (SRS side and curtain shield airbags)

●

The SRS side and curtain shield airbags will deploy in the event of an
impact that exceeds the set threshold level (the level of force corresponding
to the impact force produced by an approximately 3300 lb. [1500 kg] vehicle
colliding with the vehicle cabin from a direction perpendicular to the vehicle
orientation at an approximate speed of 12 - 18 mph [20 - 30 km/h]).

●

The SRS side and curtain shield airbags may also deploy in the event of a
severe rear collision.

●

The SRS curtain shield airbags may also deploy in the event of a severe
frontal collision.

■

SRS airbag deployment conditions (SRS rear window curtain shield air-
bag)

The SRS rear window curtain shield airbag is designed to inflate when the
passenger compartment is subjected to a severe impact from the rear or side.

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Conditions under which the SRS airbags may deploy (inflate), other than
a collision 

The SRS front airbags and SRS curtain shield airbags may also deploy if a
serious impact occurs to the underside of your vehicle. Some examples are
shown in the illustration.

The SRS rear window curtain shield airbag may also deploy if a serious
impact occurs to the underside of your vehicle. Some examples are shown in
the illustration.

■

Types of collisions that may not deploy the SRS airbags (SRS front air-
bags)

The SRS front airbags do not generally inflate if the vehicle is involved in a
side or rear collision, if it rolls over, or if it is involved in a low-speed frontal
collision. But, whenever a collision of any type causes sufficient forward
deceleration of the vehicle, deployment of the SRS front airbags may occur.

●

Hitting a curb, edge of pavement or hard
surface

●

Falling into or jumping over a deep hole

●

Landing hard or falling

●

Hitting a curb, edge of pavement or hard
surface

●

Falling into or jumping over a deep hole

●

Landing hard or vehicle falling

●

Collision from the side

●

Collision from the rear

●

Vehicle rollover

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Types of collisions that may not deploy the SRS airbags (SRS side and
curtain shield airbags)

The SRS side and curtain shield airbags may not activate if the vehicle is
subjected to a collision from the side at certain angles, or a collision to the
side of the vehicle body other than the passenger compartment.

The SRS side airbags do not generally inflate if the vehicle is involved in a
frontal collision, if it rolls over, or if it is involved in a low-speed side or low-
speed rear collision.

The SRS curtain shield airbags do not generally inflate if the vehicle rolls
over, or if it is involved in a low-speed side or low-speed frontal or low-speed
rear collision.

●

Collision from the side to the vehicle
body other than the passenger compart-
ment

●

Collision from the side at an angle

●

Collision from the front

●

Vehicle rollover

●

Vehicle rollover

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Types of collisions that may not deploy the SRS airbag (SRS rear win-
dow curtain shield airbag)

The SRS rear window curtain shield airbag is generally not designed to inflate
if the vehicle is involved in a front collision, if it rolls over, or if it is involved in a
low-speed rear or low-speed side collision.

■

When to contact your Scion dealer

In the following cases, the vehicle will require inspection and/or repair. Con-
tact your Scion dealer as soon as possible. 

●

Any of the SRS airbags have been inflated.

●

Collision from the front

●

Vehicle rollover

●

The front of the vehicle is damaged or
deformed, or was involved in an acci-
dent that was not severe enough to
cause the SRS front airbags to inflate.

●

A portion of a door or surroundings
areas is damaged or deformed, or the
vehicle was involved in an accident that
was not severe enough to cause the
SRS side and curtain shield airbags to
inflate.

●

The rear of the vehicle is damaged or
deformed, or the vehicle was involved in
an accident that was not severe enough
to cause the SRS rear window curtain
shield airbag to inflate.

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●

The pad section of the steering wheel,
dashboard near the front passenger air-
bag or lower portion of the instrument
panel is scratched, cracked, or other-
wise damaged.

●

The seat cushion surface is scratched,
cracked, or otherwise damaged.

●

The surface of the seats with the side
airbag is scratched, cracked, or other-
wise damaged.

●

The portion of the front pillars, rear pil-
lars or roof side rail garnishes (padding)
containing the curtain shield airbags
inside is scratched, cracked, or other-
wise damaged.

●

The portion of the rear roof headlining or
rear pillars containing the rear window
curtain shield airbag inside is scratched,
cracked, or otherwise damaged.