Scion xB. Service Manual - part 20

308

5-2. Steps to take in an emergency

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Installing the spare tire

Remove any dirt or foreign mat-
ter from the wheel contact sur-
face.

If foreign matter is on the wheel
contact surface, the wheel nuts
may loosen while the vehicle is
in motion, causing the tire to
come off.

Install the spare tire and loosely
tighten each wheel nut by hand
by approximately the same
amount.

Tighten the wheel nuts until the
tapered portion comes into
loose contact with the disc
wheel seat.

Lower the vehicle.

STEP 

1 

STEP 

2 

Tapered portion

Disc wheel 

seat

STEP 

3 

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5-2. Steps to take in an emergency

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Firmly tighten each wheel nut
two or three times in the order
shown in the illustration.

Tightening torque:
76 ft•lbf (103 N•m, 10.5 kgf•m)

Stow the flat tire, tire jack and all tools.

STEP 

4 

STEP 

5 

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5-2. Steps to take in an emergency

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Stowing the flat tire

Put the flat tire on the center of
the luggage mat with the outer
side of the wheel facing up. Hook
one end of the belt (dark gray
portion) which is not forked to
either front cargo hook.

Pass the belts from between the
wheel spokes through the cen-
ter hole of the wheel.

Hook another end of the belt
(ivory portion) coming through
the center hole to the other front
cargo hook, and the other end
(dark gray portion) to the rear
cargo hook located diagonally to
the secondly used front hook.

STEP 

1 

STEP 

2 

STEP 

3 

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5-2. Steps to take in an emergency

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Make sure the flat tire is stowed
securely by tightening the belt
firmly using the adjuster.

STEP 

4 

■

The compact spare tire

●

The compact spare tire saves in your luggage compartment.

●

Its lighter weight helps to enhance fuel economy.

●

It permits easier installation in case of a flat tire.

●

Make sure to check the tire inflation pressure of the compact spare
tire. (

P. 340)

■

After completing the tire change

The tire pressure warning system must be reset. (

P. 239)

■

When using the compact spare tire

As the compact spare tire is not equipped with a tire pressure warning
valve and transmitter, low inflation pressure of the spare tire will not be
indicated by the tire pressure warning system. Also, if you replace the
compact spare tire after the tire pressure warning light comes on, the
light remains on.

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5-2. Steps to take in an emergency

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■

If you have a flat front tire on a road covered with snow or ice

Install the compact spare tire on one of the rear wheels of the vehicle.
Perform the following steps and fit tire chains to the front tires:

Replace a rear tire with the compact spare tire.

Replace the flat front tire with the tire removed from the rear of
the vehicle.

Fit tire chains to the front tires.

CAUTION

■

When using the compact spare tire

●

Remember that the compact spare tire provided is specifically
designed for use with your vehicle. Do not use your compact spare tire
on another vehicle.

●

Do not use more than one compact spare tire simultaneously.

●

Replace the compact spare tire with a standard tire as soon as possi-
ble.

●

Avoid sudden acceleration, deceleration and braking, as well as sharp
cornering.

■

When the compact spare tire is attached

The vehicle speed may not be correctly detected, and the following sys-
tems may not operate correctly:

●

ABS & Brake assist

●

VSC

●

TRAC

■

Speed limit when using the compact spare tire

Do not drive at speeds in excess of 50 mph (80 km/h) when a compact
spare tire is installed on the vehicle.

The compact spare tire is not designed for driving at high speeds. Failure
to observe this precaution may lead to an accident causing death or seri-
ous injury.

STEP 

1 

STEP 

2 

STEP 

3 

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5-2. Steps to take in an emergency

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CAUTION

■

Using the tire jack

Improper use of the tire jack may cause the vehicle to suddenly fall off
the jack, leading to death or serious injury.

●

Do not use the tire jack for any purpose other than replacing tires or
installing and removing tire chains.

●

Only use the tire jack that comes with this vehicle for replacing a flat
tire.
Do not use it on other vehicles, and do not use other tire jacks for
replacing tires on this vehicle.

●

Always check that the tire jack is securely set to the jack point.

●

Do not put any part of your body under the vehicle while it is supported
by the jack.

●

Do not start or run the engine while your vehicle is supported by the
jack.

●

Do not raise the vehicle while someone is inside.

●

When raising the vehicle, do not put an object on or under the jack.

●

Do not raise the vehicle to a height greater than that required to
replace the tire.

●

Use a jack stand if it is necessary to get under the vehicle.

Take particular care when lowering the vehicle to ensure that no one
working on or near the vehicle may be injured.

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5-2. Steps to take in an emergency

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CAUTION

■

Replacing a flat tire

Observe the following precautions to reduce the risk of death or serious
injury:

●

Do not touch the disc wheels or the area around the brakes immedi-
ately after the vehicle has been driven.
After the vehicle has been driven the disc wheels and the area around
the brakes will be extremely hot. Touching these areas with hands, feet
or other body parts while changing a tire, etc. may result in burns.

●

Have the wheel nuts tightened with a torque wrench to 76 ft

•

lbf

(103 N

•

m, 10.5 kgf

•

m) as soon as possible after changing wheels.

●

When installing a tire, only use wheel nuts that have been specifically
designed for that wheel.

●

If there are any cracks or deformations in the bolt screws, nut threads
or bolt holes of the wheel, have the vehicle inspected by your Scion
dealer.

Failure to follow these precautions could cause the wheel nuts to loosen
and the tire to fall off, resulting in death or serious injury.

■

When installing the wheel nuts

Be sure to install the wheel nuts with the tapered end facing inward. 
(

P. 251)

■

After using the tools and jack

Before driving, make sure all the tools and jack are securely in place in
their storage location to reduce the possibility of personal injury during a
collision or sudden braking.

■

When stowing the flat tire

●

Make sure the rear seats are in their original position.

●

When carrying the flat tire, secure it using a tire tie-down belts. Other-
wise, the flat tire may fly out in case of the sudden braking or an acci-
dent, resulting in death or serious injury.

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5-2. Steps to take in an emergency

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NOTICE

■

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.

■

Be careful when driving over bumps with the compact spare tire
installed on the vehicle. 

The vehicle becomes lower when driving with the compact spare tire
compared to when driving with standard tires. Be careful when driving
over uneven road surfaces.

■

Driving with tire chains and the compact spare tire

Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving
performance.

■

When replacing the tires

When removing or fitting the wheels, tires or the tire pressure warning
valve and transmitter, contact your Scion dealer as the tire pressure
warning valve and transmitter may be damaged if not handled correctly.

■

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. 239)

316

5-2. Steps to take in an emergency

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If the engine will not start

If the engine will not start even though correct starting procedures

are being followed (

P. 117), consider each of the following points:

■

The engine will not start even though the starter motor
operates 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 again following correct starting proce-
dures. (

P. 117)

● Vehicles with engine immobilizer system: There may be a

malfunction in the engine immobilizer system. (

P. 64)

■

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. 319)
● The battery terminal connections may be loose or corroded.

■

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. 319)

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

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5-2. Steps to take in an emergency

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If the shift lever cannot be shifted from P (automatic transmission)

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

there may be a problem with the shift lock system (a system to pre-

vent 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 tool.

Press the shift lock override
button.

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

STEP 

1 

STEP 

2 

STEP 

3 

STEP 

4 

STEP 

5 

318

5-2. Steps to take in an emergency

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If you lose your keys

New genuine keys can be made by your Scion dealer. Bring a master

key and the key number stamped on the key number plate.

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5-2. Steps to take in an emergency

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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 also call your Scion dealer or a 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 vehicle by follow-
ing the steps below.

Connect the jumper cables according to the following procedure:

Connect a positive jumper cable clamp to the positive (+) battery
terminal on your vehicle

Connect the clamp on the other end of the positive cable to the
positive (+) battery terminal on the second vehicle

Connect a negative cable clamp to the negative (-) battery termi-
nal on the second vehicle

Connect the clamp at the other end of the negative cable to a
solid, stationary, unpainted metallic point away from the battery
and any moving parts, 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.

STEP 

1 

STEP 

2 

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5-2. Steps to take in an emergency

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■

Starting the engine when the battery is discharged

Vehicles with an automatic transmission, the engine cannot be started by
push-starting.

■

To prevent battery discharge

●

Turn off the headlights and the air conditioning 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.

■

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.)

Maintain the engine speed of the second vehicle and start
the engine of your vehicle by turning the engine switch to
the “ON” position.

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

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

STEP 

3 

STEP 

4 

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5-2. Steps to take in an emergency

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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 each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.

●

Do not allow the + and - clamps of the jumper cables to come into contact
with each other.

●

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

■

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.

■

To prevent damage to the vehicle

Do not pull- or push-start the vehicle as the three-way catalytic converter
may overheat and become a fire hazard.

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5-2. Steps to take in an emergency

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NOTICE

■

When handling jumper cables

When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans or belt.

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5-2. Steps to take in an emergency

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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 fans

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

The following may indicate that your vehicle is overheating.

● The high engine coolant temperature warning light ( P. 290) 

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

● Steam is coming from under the hood.

STEP 

1 

STEP 

2 

STEP 

3