Scion iQ. Service Manual - part 17

282

5-2. Steps to take in an emergency

*

1

: When filled with less than 2.6 gal. (10 L, 2.2 Imp.gal.) per refueling, the fuel

gauge may not display accurately.

*

2

: Driver’s seat belt reminder:

The driver’s seat belt reminder sounds to alert the driver that his or her seat
belt is not fastened. Once the engine switch is turned to the ON or START
position, the buzzer sounds for 6 seconds. If the vehicle has reached a
speed of at least 12 mph (20 km/h), the buzzer sounds intermittently for
approximately 10 seconds. Then, if the seat belt is still unfastened, the
buzzer will sound in a different tone for approximately 20 more seconds.

(except Canada)

Maintenance required 
reminder light

Indicates that mainte-
nance is required accord-
ing to the driven distance 
on the maintenance 
schedule.

*

4

Illuminates for about 3 
seconds and then flashes 
for about 15 seconds 
approximately 4500 miles 
(7200 km) after the 
remainder light has been 
reset.

If necessary, perform 
maintenance.

Comes on and remains 
on if the distance driven 
exceeds 5000 miles 
(8000 km) after the main-
tenance data has been 
reset.
(The indicator will not 
work properly unless the 
remainder light has been 
reset.)

Perform the necessary 
maintenance.
Please reset the remain-
der light after the mainte-
nance is performed. 
(

P. 190)

Warning light

Warning light/Details

Correction procedure

5

W
h

en
 t

ro

ub
le 

ar

ise
s

283

5-2. Steps to take in an emergency

*

3

: Front passenger’s seat belt reminder:

The front passenger’s seat belt reminder sounds to alert the front passenger
that his or her seat belt is not fastened. The buzzer sounds intermittently for
approximately 10 seconds after the vehicle has reached a speed of at least
12 mph (20 km/h). Then, if the seat belt is still unfastened, the buzzer will
sound in a different tone for approximately 20 more seconds.

*

4

: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s Manual

Supplement” for the maintenance interval applicable to your vehicle.

■

SRS warning light

This warning light system monitors the airbag sensor assembly, front airbag
sensors, side and curtain shield airbag sensors, curtain shield airbag sen-
sors, rear airbag sensors, driver’s seat position sensor, driver’s seat belt
buckle switch, front passenger occupant classification system (ECU and
sensors), AIR BAG ON indicator light, AIR BAG OFF indicator light, front
passenger’s seat belt buckle switch, seat belt pretensioner assemblies, air-
bags, interconnecting wiring and power sources. (

P. 69)

■

Key reminder buzzer

The buzzer indicates that the key has not been removed with the engine
switch in the ACC or LOCK position and the driver’s door opened.

■

Electric power steering system warning light

When the battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may comes on.

■

If the malfunction indicator lamp comes on while driving

First check the following:

●

Is the fuel tank empty? 
If it is, fill the fuel tank immediately.

●

Is the fuel tank cap loose? 
If it is, tighten it securely.

The malfunction indicator lamp will go off after taking several driving trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact your Scion dealer as soon as possible.

284

5-2. Steps to take in an emergency

■

Front passenger detection sensor and passenger seat belt reminder

If luggage or other load is placed on the front passenger seat, depending on
its weight, the reminder light to flash and buzzer to sound.

■

When the tire pressure warning light comes on

Check the tire inflation pressure and adjust to the appropriate level. 
Pushing the tire pressure warning reset switch does not turn off the tire
pressure warning light.

■

The tire pressure warning light may turn on due to natural causes

The tire pressure warning light may turn on due to natural causes such
as natural air leaks or tire inflation pressure changes caused by temper-
ature. In this case, adjusting the tire inflation pressure will turn off the
warning light (after a few minutes).

■

If the tire pressure warning system is inoperative

The tire pressure warning system will be disabled in the following condi-
tions: 
(When the condition becomes normal, the system will work properly.)

●

If tires not equipped with tire pressure warning valves and transmit-
ters are used.

●

If the ID code on the tire pressure warning valves and transmitters is
not registered in the tire pressure warning computer.

●

If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm

2

 or bar) or

higher.

The tire pressure warning system may be disabled in the following condi-
tions: 
(When the condition becomes normal, the system will work properly.)

●

If electronic devices or facilities using similar radio wave frequencies
are nearby.

●

If a radio set at similar frequencies is in use in the vehicle.

●

If a window tint that affects the radio wave signals is installed.

●

If there is a lot of snow or ice on the vehicle, in particular around the
wheels or wheel housings.

5

W
h

en
 t

ro

ub
le 

ar

ise
s

285

5-2. Steps to take in an emergency

●

If non-genuine Scion wheels are used. (Even if you use Scion
wheels, the tire pressure warning system may not work properly with
some types of tires.)

●

If tire chains are used.

●

If emergency tire puncture repair kit is used.

■

If the tire pressure warning light frequently comes on after blinking
for 1 minute

If the tire pressure warning light frequently comes on after blinking for 1
minute when the engine switch is turned to the ON position, have it
checked by your Scion dealer.

■

Customization that can be configured at Scion dealer

The vehicle speed linked seat belt reminder buzzer can be disabled. 
(Customizable features 

P. 343)

CAUTION

■

When the electric power steering system warning light comes on

The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate using more force than usual.

■

If the tire pressure warning light comes on

Be sure to observe the following precautions. Failure to do so could
cause loss of vehicle control and result in death or serious injury.

●

Stop your vehicle in a safe place as soon as possible. Adjust the tire
inflation pressure immediately.

●

If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is probable that you have a flat tire. Check the tires.
If the tire is flat, temporary repair it with liquid sealants and have the
flat tire repaired or replaced by the nearest Scion dealer as soon as
possible.

●

Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.

■

If a blowout or sudden air leakage should occur

The tire pressure warning system may not activate immediately.

286

5-2. Steps to take in an emergency

CAUTION

■

Maintenance of the tire

Each tire, including the spare (if provided), should be checked monthly
when cold and inflated to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or tire inflation pressure
label (tire and load information label). (If your vehicle has tires of a differ-
ent size than the size indicated on the vehicle placard or tire inflation
pressure label [tire and load information label], you should determine the
proper tire inflation pressure for those tires.)

As an added safety feature, your vehicle has been equipped with a tire
pressure monitoring system (TPMS-tire pressure warning system) that
illuminates a low tire pressure telltale (tire pressure warning light) when
one or more of your tires is significantly under-inflated. Accordingly,
when the low tire pressure telltale (tire pressure warning light) illumi-
nates, you should stop and check your tires as soon as possible, and
inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.

Please note that the TPMS (tire pressure warning system) is not a sub-
stitute for proper tire maintenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-inflation has not reached the
level to trigger illumination of the TPMS low tire pressure telltale (tire
pressure warning light).

Your vehicle has also been equipped with a TPMS (tire pressure warning
system) malfunction indicator to indicate when the system is not operat-
ing properly. The TPMS (tire pressure warning system) malfunction indi-
cator is combined with the low tire pressure telltale (tire pressure
warning light). When the system detects a malfunction, the telltale will
flash for approximately one minute and then remain continuously illumi-
nated. This sequence will continue upon subsequent vehicle start-ups as
long as the malfunction exists. When the malfunction indicator is illumi-
nated, the system may not be able to detect or signal low tire pressure
as intended.

5

W
h

en
 t

ro

ub
le 

ar

ise
s

287

5-2. Steps to take in an emergency

CAUTION

TPMS (tire pressure warning system) malfunctions may occur for a vari-
ety of reasons, including the installation of replacement or alternate tires
or wheels on the vehicle that prevent the TPMS (tire pressure warning
system) from functioning properly. Always check the TPMS (tire pres-
sure warning system) malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the replacement or alter-
nate tires and wheels allow the TPMS (tire pressure warning system) to
continue to function properly.

NOTICE

■

To ensure the tire pressure warning system operates properly

Do not install tires with different specifications or makers, as the tire
pressure warning system may not operate properly.

288

5-2. Steps to take in an emergency

If you have a flat tire

A puncture caused by a nail or screw passing through the tire

tread can be repaired temporarily using the emergency tire punc-

ture repair kit. (The kit contains a bottle of sealant. The sealant

can be used only once to temporarily repair one tire without

removing the nail or screw from the tire.) After temporarily repair-

ing the tire with the kit, have the tire repaired or replaced by your

Scion dealer.

■

Before repairing the tire
● Stop the vehicle in a safe place on a hard, flat surface.
● Set the parking brake.
● Shift the shift lever to P.
● Stop the engine.
● Turn on the emergency flashers.

■

Location of the emergency tire puncture repair kit

Emergency tire 
puncture repair kit

Towing eyelet

5

W
h

en
 t

ro

ub
le 

ar

ise
s

289

5-2. Steps to take in an emergency

■

Emergency tire puncture repair kit components

Bottle

Air release cap

Hose

Stickers

290

5-2. Steps to take in an emergency

Compressor

Power plug

Air pressure gauge

Compressor switch

5

W
h

en
 t

ro

ub
le 

ar

ise
s

291

5-2. Steps to take in an emergency

Taking out the emergency tire puncture repair kit

Fold down the rear seat seatbacks. (

P. 40)

Turn the knobs and remove
them.

Remove the luggage box.

Take out the emergency tire
puncture repair kit.

Luggage 
box

Emergency tire 
puncture repair kit

292

5-2. Steps to take in an emergency

Before performing emergency repair

Check the degree of the tire damage.

A tire should only be repaired
with the emergency tire puncture
repair kit if the damage is caused
by a nail or screw passing
through the tire tread.

• Do not remove the nail or

screw from the tire. Removing
the object may widen the
opening and prevent emer-
gency repair with the repair kit.

• To avoid sealant leakage,

move the vehicle until the area
of the puncture, if known, is
positioned at the top of the
tire.

■

In the following cases, the tire cannot be repaired with the emer-
gency tire puncture repair kit. Contact your Scion dealer.

●

When the tire is damaged due to driving without sufficient air pres-
sure

●

When there are any cracks or damage at any location on the tire,
such as on the side wall, except the tread

●

When the tire is visibly separated from the wheel

●

When the cut or damage to the tread is 0.16 in. (4 mm) long or more

●

When the wheel is damaged

●

When two or more tires have been punctured

●

When more than 2 sharp objects such as nails or screws have
passed through the tread on a single tire

●

When the sealant has expired

5

W
h

en
 t

ro

ub
le 

ar

ise
s

293

5-2. Steps to take in an emergency

Emergency repair method

Take out the repair kit from the plastic bag. 

Remove the valve cap from the
valve of the punctured tire.

Remove the air release cap from
the hose.

You will use the air release cap
again. Therefore keep it in a
safe place.

Connect the hose to the valve.

Screw the end of the hose
clockwise as far as possible.

294

5-2. Steps to take in an emergency

Make sure that the compressor
switch is off.

Remove the rubber stopper from
the compressor.

Connect the power plug to the
power outlet socket. (

P. 177)

5

W
h

en
 t

ro

ub
le 

ar

ise
s

295

5-2. Steps to take in an emergency

Connect the bottle to the com-
pressor.

Make sure that the bottle is
securely connected.

Attach the 2 stickers as shown.

Remove any dirt and moisture
from the wheel before attaching
the label.

296

5-2. Steps to take in an emergency

Check the specified tire inflation pressure.

Tire inflation pressure is specified on the label on the driver’s side
pillar as shown. (

P. 327)

Start the vehicle’s engine. 

To inject the sealant and inflate
the tire, turn the compressor
switch on. 

5

W
h

en
 t

ro

ub
le 

ar

ise
s

297

5-2. Steps to take in an emergency

Inflate the tire until the specified
air pressure is reached.

The sealant will be injected
and the pressure will spike to
44 psi (300 kPa, 3.1 kgf/cm

2

or bar) or 58 psi (400 kPa,
4.1 kgf/cm

2

 or bar), and then

gradually decrease.

The air pressure gauge will
display the actual tire inflation
pressure about 1 minute (15
minutes at low temperature)
after the switch is turned on.

Inject to specified air pressure.

• Turn the compressor switch

off and then check the tire
inflation pressure. Being
careful not to over inflate,
check and repeat the inflation
procedure until the specified
tire inflation pressure is
reached.

• If the tire inflation pressure is

still lower than the specified
point after inflation for 10
minutes (40 minutes at low
temperature) with the switch
on, the tire is too damaged to
be repaired. Turn the com-
pressor switch off and con-
tact your Scion dealer.

• If the tire inflation pressure

exceeds the specified air
pressure, let out some air to
adjust the tire inflation pres-
sure. (

P. 301, 327)