Scion iQ. Service Manual - part 18

298

5-2. Steps to take in an emergency

With the compressor switch off, disconnect the hose from the
valve on the tire and then pull out the power plug from the
power outlet socket.

Some sealant may leak when the hose is removed.

Install the valve cap onto the valve of the emergency repaired
tire.

Attach the air release cap to the
end of the hose.

If the air release cap is not
attached, the sealant may leak
and the vehicle may get dirty.

Temporarily store the bottle in the luggage room while it is
connected to the compressor.

To spread the liquid sealant evenly within the tire, immediately
drive safely for about 3 miles (5 km) below 50 mph (80 km/h).

After driving for about 3 miles
(5 km), stop your vehicle in a
safe place on a hard, flat surface
and remove the air release cap
from the hose before reconnect-
ing the repair kit.

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299

5-2. Steps to take in an emergency

Turn the compressor switch on
and wait for several seconds,
and then turn it off. Check the tire
inflation pressure.

If the tire inflation pressure is
under 19 psi (130 kPa,
1.3 kgf/cm

2

 or bar): The punc-

ture cannot be repaired. Con-
tact your Scion dealer.
If the tire inflation pressure is
19 psi (130 kPa, 1.3 kgf/cm

2

or bar) or higher, but less than
the specified air pressure:
Proceed to 

.

If the tire inflation pressure is
the specified air pressure:
Proceed to 

.

Turn the compressor switch on to inflate the tire until the spec-
ified air pressure is reached. Drive for about 3 miles (5 km)
and then perform 

.

Attach the air release cap to the
end of the hose.

If the air release cap is not
attached, the sealant may leak
and the vehicle may get dirty.

Store the bottle in the luggage room while it is connected to
the compressor.

Taking precautions to avoid sudden braking, sudden accelera-
tion and sharp turns, drive carefully at under 50 mph
(80 km/h) to the nearest Scion dealer.

300

5-2. Steps to take in an emergency

■

Emergency tire puncture repair kit

●

The sealant stored in the emergency tire puncture repair kit can be
used only once to temporarily repair a single tire. If the sealant has
been used and needs to be replaced, contact your Scion dealer.

●

The sealant can be used when the outside temperature is from -40°F
(-40°C) to 140°F (60°C).

●

The repair kit is exclusively designed for size and type of tires origi-
nally installed on your vehicle. Do not use it for tires that a different
size than the original ones, or for any other purposes.

●

The sealant has a limited lifespan. The expiration date is shown on
the bottle. The sealant should be replaced before the expiration date.
Contact your Scion dealer.

●

If the sealant gets on your clothes, it may stain.

●

If the sealant adheres to a wheel or the surface of the vehicle body,
the stain may not be removable if it is not cleaned at once. Immedi-
ately wipe away the sealant with a wet cloth.

●

During operation of the repair kit, a loud operation noise is produced.
This does not indicate a malfunction.

●

Do not use to check or to adjust the tire pressure.

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301

5-2. Steps to take in an emergency

■

If the tire is inflated to more than the specified air pressure

Disconnect the hose from the valve.

Disconnect the hose from the valve, remove the air release cap
from the hose and then reconnect the hose.

Turn the compressor switch on and wait for several seconds,
and then turn it off. Check that the air pressure indicator shows
the specified air pressure.

If the air pressure is under the designated pressure, turn the
compressor switch on again and repeat the inflation procedure
until the specified air pressure is reached.

■

The valve of a tire that has been repaired

After a tire is repaired with the emergency tire puncture repair kit, the tire
pressure warning valve and transmitter should be replaced.

■

Note for checking the emergency tire puncture repair kit

Check the sealant expiration date occasionally. 
The expiry date is shown on the bottle.

Install the air release cap to the end of
the hose and push the protrusion on
the air release cap into the tire valve to
let some air out.

302

5-2. Steps to take in an emergency

CAUTION

■

Do not drive the vehicle with a flat tire

Do not continue driving with a flat tire. 
Driving even a short distance with a flat tire can damage the tire and the
wheel beyond repair.

Driving with a flat tire may cause a circumferential groove on the side
wall. In such a case, the tire may explode when using a repair kit.

■

Caution while driving

●

Store the repair kit in the luggage room. 
Otherwise, the repair kit may fly out and break in events such as sud-
den braking, and may cause an accident.

●

The repair kit is exclusively only for your vehicle. 
Do not use repair kit on other vehicles, which could lead to an accident
causing death or serious injury.

●

Do not use repair kit for tires that are different size than the original
ones, or for any other purpose. If the tires have not been completely
repaired, it could lead to an accident causing death or serious injury.

■

Precautions for use of the sealant

●

Ingesting the sealant is hazardous to your health. If you ingest sealant,
consume as much water as possible, and then immediately consult a
doctor.

●

If sealant gets in eyes or adheres to skin, immediately wash it off with
water. If discomfort persists, consult a doctor.

■

When fixing the flat tire

●

Stop your vehicle in a safe and flat area.

●

Do not touch the wheels or the area around the brakes immediately
after the vehicle has been driven. 
After the vehicle has been driven, the wheels and the area around the
brakes may be extremely hot. Touching these areas with hands, feet or
other body parts may result in burns.

●

Connect the valve and hose securely with the tire installed on the vehi-
cle. If the hose is not properly connected to the valve, air leakage may
occur as sealant may be sprayed out.

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303

5-2. Steps to take in an emergency

CAUTION

■

When fixing the flat tire

●

If the hose comes off the valve while inflating the tire, there is a risk
that the hose will move abruptly due to air pressure.

●

After inflation of the tire has completed, the sealant may splatter when
the hose is disconnected or some air is let out of the tire.

●

Follow the operation procedure to repair the tire. If the procedures not
followed, the sealant may spray out.

●

Keep back from the tire while it is being repaired, as there is a chance
of it bursting while the repair operation is being performed. If you
notice any cracks or deformation of the tire, turn off the compressor
switch and stop the repair operation immediately.

●

The repair kit may overheat if operated for a long period of time. Do not
operate the repair kit continuously for more than 60 minutes.

●

Parts of the repair kit become hot during operation. Be careful handling
the repair kit during and after operation. Do not touch the metal part
connecting the bottle and the compressor. It will be extremely hot.

●

Do not attach the vehicle speed warning sticker to an area other than
the one indicated. If the sticker is attached to an area where an SRS
airbag is located, such as the pad of the steering wheel, it may prevent
the SRS airbag from operating properly.

■

Driving to spread the liquid sealant evenly

Observe the following precautions to reduce the risk of accidents. 
Failing to do so may result in a loss of vehicle control and cause death or
serious injury.

●

Drive the vehicle carefully at a low speed. Be especially careful when
turning and cornering.

●

If the vehicle does not drive straight or you feel a pull through the
steering wheel, stop the vehicle and check the following.

• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If the tire inflation pressure is 19 psi (130

kPa, 1.3 kgf/cm

2

 or bar) or less, the tire may be severely damaged.

304

5-2. Steps to take in an emergency

NOTICE

■

When performing an emergency repair

●

A tire should only be repaired with the emergency tire puncture repair
kit if the damage is caused by a sharp object such as nail or screw
passing through the tire tread. 
Do not remove the sharp object from the tire. Removing the object may
widen the opening and disenable emergency repair with the repair kit.

●

The repair kit is not waterproof. Make sure that the repair kit is not
exposed to water, such as when it is being used in the rain.

●

Do not put the repair kit directly onto dusty ground such as sand at the
side of the road. If the repair kit vacuums up dust etc., a malfunction
may occur.

■

Precautions for the emergency tire puncture repair kit

●

The repair kit power source should be 12 V DC suitable for vehicle
use. Do not connect the repair kit to any other source.

●

If gasoline splatters on the repair kit, the repair kit may deteriorate.
Take care not to allow gasoline to contact it.

●

Place the repair kit in a storage to prevent it from being exposed to dirt
or water.

●

Store the repair kit in the luggage room out of reach of children.

●

Do not disassemble or modify the repair kit. Do not subject parts such
as the air pressure indicator to impacts. This may cause a malfunction.

■

To avoid damage to the tire pressure warning valves and transmit-
ters

When a tire is repaired with liquid sealants, the tire pressure warning
valve and transmitter may not operate properly. If a liquid sealant is
used, contact your Scion dealer or other qualified service shop as soon
as possible. Make sure to replace the tire pressure warning valve and
transmitter when replacing the tire. (

P. 223)

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305

5-2. Steps to take in an emergency

If the engine will not start

If the engine still does not start after following the correct starting

procedure (

P. 113) or releasing the steering lock (P. 114), confirm

the following points.

■

The engine will not start even when the starter motor oper-
ates normally.

One of the following may be the cause of the problem.

● There may not be sufficient fuel in the vehicle’s tank. 

Refuel the vehicle.

● The engine may be flooded.

Try to restart the engine once more following correct starting
procedures. (

P. 113)

● Vehicles with engine immobilizer system: There may be a

malfunction in the engine immobilizer system. (

P. 62)

■

The starter motor turns over slowly, the interior lights and
headlights are dim, or the horn does not sound or sounds at
a low volume.

One of the following may be the cause of the problem.

● The battery may be discharged. (P. 309)
● The battery terminal connections may be loose or corroded.

306

5-2. Steps to take in an emergency

■

The starter motor does not turn over, the interior lights and
headlights do not turn on, or the horn does not sound.

One of the following may be the cause of the problem.

● One or both of the battery terminals may be disconnected.
● The battery may be discharged. (P. 309)

Contact your Scion dealer if the problem cannot be repaired, or if
repair procedures are unknown.

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307

5-2. Steps to take in an emergency

If the shift lever cannot be shifted from P

If the shift lever cannot be shifted with your foot on the brake, there

may be a problem with the shift lock system (a system to prevent

accidental operation of the shift lever). Have the vehicle inspected by

your Scion dealer immediately. 

The following steps may be used as an emergency measure to

ensure that the shift lever can be shifted.

Set the parking brake.

Turn the engine switch to the ACC position.

Depress the brake pedal.

Pry the cover up with a flat-
head screwdriver or equiva-
lent.

Press the shift lock override
button.

The shift lever can be shifted
while the button is pressed.

308

5-2. Steps to take in an emergency

If you lose your keys

New genuine keys can be made by your Scion dealer using the key

number stamped on your key number plate. Vehicles with engine

immobilizer system, the dealer will also need the master key. 

(

P. 25)

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309

5-2. Steps to take in an emergency

If the vehicle battery is discharged

The following procedures may be used to start the engine if the vehi-

cle's battery is discharged.

You can call your Scion dealer or qualified repair shop.

If you have a set of jumper (or booster) cables and a second vehi-
cle with a 12-volt battery, you can jump start your Scion following
the steps below.

Connect the jumper cables.

Positive (+) battery terminal on your vehicle

Positive (+) battery terminal on the second vehicle

Negative (-) battery terminal on the second vehicle

Connect the jumper cable to ground on your vehicle as shown in
the illustration.

Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.

Maintain the engine speed of the second vehicle and start
the engine of your vehicle.

310

5-2. Steps to take in an emergency

■

Starting the engine when the battery is discharged

The engine cannot be started by push-starting.

■

Avoiding a discharged battery

●

Turn off the headlights and the audio system while the engine is turned
off.

●

Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic, etc.

■

Charging the battery

The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long time, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)

CAUTION

■

Avoiding battery fires or explosions

Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the battery.

●

Make sure the jumper cable is connected to the correct terminal and that it
is not unintentionally in contact with any part other than the intended termi-
nal.

●

Do not allow the jumper cables to come into contact with the “+” and “-” ter-
minals.

●

Do not smoke, use matches, cigarette lighters or allow open flame near
the battery.

Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.

Once the engine starts, have the vehicle checked at your Scion
dealer as soon as possible.

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311

5-2. Steps to take in an emergency

CAUTION

■

Battery precautions

The battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling the battery.

●

When working with the battery, always wear safety glasses and take care
not to allow any battery fluids (acid) to come into contact with skin, clothing
or the vehicle body.

●

Do not lean over the battery.

●

In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.

●

Always wash your hands after handling the battery support, terminals, and
other battery-related parts.

●

Do not allow children near the battery.

NOTICE

■

When handling jumper cables

Be careful that the jumper cables do not become tangled in the cooling fan
or any of the belts when connecting or disconnecting them.

312

5-2. Steps to take in an emergency

If your vehicle overheats

Correction procedures

Stop the vehicle in a safe place and turn off the air condition-
ing system, and then stop the engine.

If you see steam: 

Carefully lift the hood after the steam subsides.

If you do not see steam:

Carefully lift the hood.

After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks.

Radiator

Cooling fan

If a large amount of coolant leaks,
immediately contact your Scion
dealer.

The coolant level is satisfactory if
it is between the FULL and LOW
lines on the reservoir.

Reservoir

FULL

LOW

Radiator cap

The following may indicate that your vehicle is overheating.
● The high engine coolant temperature warning light (P. 278)

comes on or flashes, or a loss of engine power is experienced.
(For example, the vehicle speed does not increase.)

● Steam comes out from under the hood.

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313

5-2. Steps to take in an emergency

Add coolant if necessary.

Water can be used in an emer-
gency if coolant is unavailable.

Start the engine and turn the air conditioning system on to
check that the radiator cooling fan operates and to check for
coolant leaks from the radiator or hoses.

The fan operates when the air conditioning system is turned on
immediately after a cold start. Confirm that the fan is operating by
checking the fan sound and air flow. If it is difficult to check these,
turn the air conditioning system on and off repeatedly. 
(The fan may not operate in freezing temperatures.)

If the fan is not operating:

Stop the engine immediately and contact your Scion dealer.

If the fan is operating:

Have the vehicle inspected at the nearest Scion dealer.

CAUTION

■

To prevent an accident or injury when inspecting under the hood of
your vehicle

●

If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot, caus-
ing serious injuries such as burns.

●

Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fan and belts. Failure to do so may cause the hands or clothing to be
caught, resulting in serious injury.

●

Do not loosen the radiator cap and the coolant reservoir cap while the
engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.