Scion iQ. Service Manual - part 12

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Positioning a floor jack

When raising your vehicle with a floor jack, position the jack cor-

rectly. Improper placement may damage your vehicle or cause injury.

■

Front

■

Rear

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CAUTION

■

When raising your vehicle

Make sure to observe the following to reduce the possibility of death or seri-
ous injury.

●

When using a floor jack, follow the instructions of the manual provided with
the jack.

●

Do not use the jack for tire replacement which can be purchased at Scion
dealer for your vehicle.

●

Do not put any part of your body or get underneath the vehicle supported
only by the floor jack.

●

Always use floor jack and/or automotive jack stands on a solid, flat, level
surface.

●

Do not start the engine while the vehicle is supported by the floor jack.

●

Stop the vehicle on level firm ground, firmly set the parking brake and put
the shift lever in P.

●

Make sure to set the floor jack properly at the jack point. 
Raising the vehicle with an improperly positioned floor jack will damage
the vehicle and may cause the vehicle to fall off the floor jack.

●

Do not raise the vehicle while someone is in the vehicle.

●

Lift up the vehicle using a floor jack
such as the one shown in the illustra-
tion.

●

Do not jack the vehicle at sections such
as the rear suspension. The vehicle
may be damaged.

Rear suspension

Front

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CAUTION

■

When raising your vehicle

●

When raising the vehicle, do not place any objects on top of or underneath
the floor jack.

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Replacing the tire

Replacing a tire

Chock the tires.

When raising your vehicle with a jack, position the jack correctly.

Improper placement may damage your vehicle or cause injury.

Jack, wheel nut wrench and wheel chocks can be purchased at

your Scion dealer.

■

Before jacking up the vehicle
● Stop the vehicle on a hard, flat surface.
● Set the parking brake.
● Shift the shift lever to P.
● Stop the engine.

Tire position

Wheel chock 

positions

Front

Left-
hand 
side

Behind and in 
front of the 
rear right-
hand side tire

Right-
hand 
side

Behind and in 
front of the 
rear left-hand 
side tire

Rear

Left-
hand 
side

Behind and in 
front of the 
front right-
hand side tire

Right-
hand 
side

Behind and in 
front of the 
front left-hand 
side tire

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Slightly loosen the wheel nuts
(one turn).

Check the jack point.

Turn the jack portion “A” by hand
until the notch of the jack is in
contact with the jack point.

Outer

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Raise the vehicle until the tire is
slightly raised off the ground.

Remove all the wheel nuts and
the tire.

When resting the tire on the
ground, place the tire so that the
wheel design faces up to avoid
scratching the wheel surface.

Installing the 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, and the tire may
come off the vehicle.

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

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

Lower the vehicle.

Firmly tighten each 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 jack and all tools.

Tapered portion

Disc
wheel
sheet

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CAUTION

■

Using the jack

Improper use of the jack may lead to death or serious injuries due to the
vehicle suddenly falling off the jack.

●

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

●

Do not use it on other vehicles, and do not use other jacks for replac-
ing tires on this vehicle.

●

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

●

Do not put any part of your body under the vehicle supported by a jack.

●

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

●

Do not raise the vehicle while someone is in it.

●

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 will be injured.

■

Replacing a tire

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

●

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.
Failure to follow these precautions could cause the nuts to loosen and
the wheel may fall off, which could lead to an accident causing death
or serious injury.

●

Do not attach a heavily damaged wheel ornament, as it may fly off the
wheel while the vehicle is moving.

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CAUTION

■

When installing the wheel nuts

●

Never use oil or grease on the wheel bolts or wheel nuts. 
Oil and grease may cause the wheel nuts to be excessively tightened,
leading to bolt or disc wheel damage. In addition, the oil or grease can
cause the wheel nuts to loosen and the wheel may fall off, causing an
accident and resulting in death or serious injury. Remove any oil or
grease from the wheel bolts or wheel nuts.

■

Location of tools

There are no place to install the jack, wheel nut wrench and wheel
chocks, so do not put it inside the vehicle.
Failure to follow the precaution could cause the interior to get damaged,
the tools may fly out in events such as sudden braking, and may cause
an accident.

●

Be sure to install the wheel nuts with
the tapered end facing inward. Install-
ing the nuts with the tapered end fac-
ing outward can cause wheel to
break and eventually cause a wheel
to come off while driving, which could
lead to an accident resulting in death
or serious injury.

Tapered
portion

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Engine compartment

Engine oil filler cap 

(

P. 212)

Engine oil level dipstick 

(

P. 211)

Battery

(

P. 218)

Brake fluid reservoir 

(

P. 217)

Fuse box

(

P. 244)

Washer fluid tank (

P. 220)

Radiator

(

P. 216)

Electric cooling fan

Condenser

(

P. 216)

Engine coolant reservoir 

(

P. 215)

Fuse box

(

P. 244)

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Engine oil

With the engine at operating temperature and turned off, check the oil
level on the dipstick.

■

Checking the engine oil

Park the vehicle on level ground. After turning off the engine,
wait more than 5 minutes for the oil to drain back into the bot-
tom of the engine.

Hold a rag under the end and
pull the dipstick out.

Wipe the dipstick clean.

Reinsert the dipstick fully.

Holding a rag under the end, pull the dipstick out and check
the oil level.

Low

Normal

Excessive

The shape of the dipstick may
differ depending on the type of
vehicle or engine.

Wipe the dipstick and reinsert it fully.

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Adding engine oil

If the oil level is below or near
the low level mark, add engine
oil of the same type as already in
the engine.

Make sure to check the oil type and prepare the items needed before
adding oil.

Remove the engine oil filler cap by turning it counterclock-
wise.

Add engine oil slowly.

Checking the dipstick.

Reinstall the engine oil filler cap by turning it clockwise.

The approximate quantity of oil needed to raise the level between low and
full on the dipstick is indicated as follows:

1.6 qt. (1.5 L, 1.3 Imp. qt.)

Engine oil selection

P. 323

Items

Clean funnel

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■

Engine oil consumption

A certain amount of engine oil will be consumed while driving. In the follow-
ing situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance intervals.

●

When the engine is new, for example directly after purchasing the vehicle
or after replacing the engine

●

If low quality oil or oil of an inappropriate viscosity is used

●

When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently

●

When leaving the engine idling for a long time, or when driving frequently
through heavy traffic

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CAUTION

■

Used engine oil

●

Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation or skin cancer, so care should
be taken to avoid prolonged and repeated contact. To remove used engine
oil from your skin, wash thoroughly with soap and water.

●

Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground. Call your Scion dealer, service station or auto parts store for infor-
mation concerning recycling or disposal.

●

Do not leave used engine oil within the reach of children.

NOTICE

■

To prevent serious engine damage

Check the oil level on regular basis.

■

When replacing the engine oil

●

Be careful not to spill engine oil on the vehicle components.

●

Avoid overfilling, as the engine could be damaged.

●

Check the oil level on the dipstick every time you refill the vehicle.

●

Be sure the engine oil filler cap is properly tightened.

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Engine coolant

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

Reservoir cap

FULL

LOW

If the level is on or below the
LOW line, add coolant up to the
FULL line.

■

If the coolant level drops within a short time after replenishing

Visually check the radiator, hoses, reservoir cap, radiator cap, drain cock
and water pump. 
If you cannot find a leak, have your Scion dealer pressure test the cap and
check for leaks in the cooling system.

■

Coolant selection

Only use “Toyota Super Long Life Coolant” or similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology.

Except Canada: “Toyota Super Long Life Coolant” is a mixture of 50% cool-

ant and 50% deionized water. (Enabled: -31

F [-35C])

Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and

45% deionized water. (Enabled: -44

F [-42C])

For more details about engine coolant, contact your Scion dealer.

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Radiator and condenser

Check the radiator and condenser and clear any foreign objects. 
If either of the above parts are extremely dirty or you are not sure of
their condition, have your vehicle checked by your Scion dealer.

CAUTION

■

When the engine is hot

Do not remove the coolant reservoir cap. 
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.

NOTICE

■

When adding engine coolant

Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.

■

If you spill coolant

Be sure to wash it off with water to prevent damage to parts or paint.

CAUTION

■

When the engine is hot

Do not touch the radiator or condenser, as they may be hot and may cause
serious injuries, such as burns.