inflation pressure TOYOTA IQ 2014 Owners Manual

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2-5. Driving informationCargo and luggage ............. 146
Vehicle load limits ............... 150
Winter driving tips ............... 151
Trailer towing ...................... 155
Dinghy towing ..................... 156
3-1. Using the air conditioning system and defogger
Air conditioning system ....... 158
Rear window defogger ........ 164
Rear window and outside rear view mirror
defoggers .......................... 165
3-2. Using the audio system Using the AUX port/USB port ........................... 167
Using the steering wheel audio switches .................. 168
3-3. Using the interior lights Interior lights list .................. 169
• Interior light ....................... 170
3-4. Using the storage features List of storage features ....... 171
• Cup holder ........................ 172
• Bottle holders .................... 173
• Auxiliary box ..................... 174 3-5. Other interior features
Sun visors........................... 175
Vanity mirrors ..................... 176
Power outlet ....................... 177
Assist grips ......................... 178
Floor mat ............................ 179
Luggage compartment features ............................ 181
4-1. Maintenance and care Cleaning and protecting the vehicle exterior ........... 184
Cleaning and protecting the vehicle interior ............ 187
4-2. Maintenance Maintenance requirements .................... 190
General maintenance ......... 192
Emission inspection and maintenance (I/M)
programs .......................... 195
4-3. Do-it-yourself maintenance Do-it-yourself service precautions....................... 196
Hood ................................... 199
Positioning a floor jack ....... 201
Replacing the tire ............... 204
Engine compartment .......... 210
Tires ................................... 222
Tire inflation pressure ......... 230
Wheels ............................... 234
Air conditioning filter ........... 236
3Interior features
4Maintenance and care

7
Tires
●Rotation
● Replacement
● Emergency repair
● Inflation pressure
● Information
P. 222
P. 204
P. 288
P. 230
P. 332
Back door P. 33
Side doors P. 30
Fuel filler door P. 58
Turn signal lights P. 117
Rear window defogger
P. 164, 165
License plate light P. 132
Tail and rear side marker
lights
P. 132
Rear window wiperP. 139

: If equipped

Maintenance and care4
183
4-1. Maintenance and careCleaning and protecting the vehicle exterior......... 184
Cleaning and protecting the vehicle interior.......... 187
4-2. Maintenance Maintenance requirements .................. 190
General maintenance....... 192
Emission inspection and maintenance (I/M)
programs........................ 195 4-3. Do-it-yourself maintenance
Do-it-yourself service precautions .................... 196
Hood ................................ 199
Positioning a floor jack ..... 201
Replacing the tire ............. 204
Engine compartment ........ 210
Tires ................................. 222
Tire inflation pressure ...... 230
Wheels ............................. 234
Air conditioning filter......... 236
Key battery ....................... 240
Checking and replacing fuses .............................. 244
Light bulbs........................ 255

194 4-2. Maintenance
Vehicle exterior
ItemsCheck points
Doors• Operate smoothly?
Engine hood • The lock system works properly?
Fluid leaks • Is there any leakage after park-
ing?
Tires • Inflation pressure is correct?
• Tire surfaces not worn or dam-
aged?
• Tires rotated according to the maintenance schedule?
• Wheel nuts are not loose?
CAUTION
■ If the engine is running
Turn the engine off and ensure that there is adequate ventilation before per-
forming maintenance checks.

197
4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■
When working on the engine compartment
●Keep hands, clothing, and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
● Do not leave anything that may burn easily, such as paper or rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
ItemsParts and tools
Light bulbs (P. 255)
• Bulb with same number and watt-
age rating as original
• Flathead screwdriver
Radiator and condenser (P. 216)
Tire inflation pressure ( P. 230)• Tire pressure gauge
• Compressed air source
Washer fluid (P. 220)
• Water washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding washer fluid)

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4-3. Do-it-yourself maintenance
Tires
Replace or rotate tires in accordance with maintenance sched-
ules and treadwear.
■Checking tires
New tread
Treadwear indicator
Worn tread
The location of treadwear
indicators is shown by the
“TWI” or “ ” marks, etc.,
molded on the sidewall of
each tire.
■Tire rotation
Rotate the tires in the order
shown.
To equalize tire wear and
extend tire life, Scion recom-
mends that tire rotation is
carried out at the same inter-
val as tire inspection.
■The tire pressure warning system
Your Scion is equipped with a tire pressure warning system that
uses tire pressure warning valves and transmitters to detect low
tire inflation pressure before serious problems arise. (P. 280)
Front

223
4-3. Do-it-yourself maintenance
4
Maintenance and care
Installing tire pressure warning valves and transmitters
When replacing tires or wheels, tire pressure warning valves and
transmitters must also be installed.
When new tire pressure warning valves and transmitters are installed,
new tire pressure warning valve and transmitter ID codes must be regis-
tered in the tire pressure warning computer and the tire pressure warning
system must be initialized. Have tire pressure warning valve and trans-
mitter ID codes registered by your Scion dealer.
Initializing the tire pressure warning system
The tire pressure warning system mu st be initialized when rotating
the tires on vehicles differing with front and rear tire inflation pres-
sures.
When the tire pressure warning syst em is initialized, the current tire
inflation pressure is set as the pressure benchmark.
■ How to initialize the tire pressure warning system
Park the vehicle in safe place and turn the engine switch off.
Initialization cannot be performed while the vehicle is moving.
Adjust the tire inflation pressure to the specified cold tire infla-
tion pressure level. ( P. 327)
Make sure to adjust the tire pressure to the specified cold tire
inflation pressure level. The ti re pressure warning system will
operate based on this pressure level.
Turn the engine switch to the ON position.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not
registered, the tire pre
ssure warning system will not work properly. After
driving for about 20 minutes, the tire pressure warning light blinks for 1
minute and stays on to indicate a system malfunction.
■Tire life
Any tire over 6 years old must be checked by a qualified technician even
if they have seldom or never been used or damage is not obvious.
■If the tread wears down below 0.16 in. (4 mm) on snow tires
The effectiveness of snow tires is lost.
■Maximum load of tire
Check that the maximum load of the replacement tire is greater than 1/2
of the Gross Axle Weight Ratings (GAW R) of either the front axle or the
rear axle, whichever is greater.
■Tire types
1 Summer tires
Summer tires are high-speed performance tires best suited to highway
driving under dry conditions. Since summer tires do not have the same
traction performance as snow tire s, summer tires are inadequate for
driving on snow-covered or icy roads. For driving on snow-covered
roads or icy roads, the use of snow tires is recommended. When
installing snow tires, be sure to replace all four tires.
2 All season tires All season tires are designed to provide better traction in snow and to
be adequate for driving in most winter conditions, as well as for use
year round. All season tires, however, do not have adequate traction
performance compared with snow tires in heavy or loose snow. Also,
all season tires fall short in acceleration and handling performance
compared with summer tires in highway driving.
For the GAWR, see the Certification
Label. For the maximum load of the
tire, see the load limit at maximum cold
tire inflation pressure mentioned on the
sidewall of the tire. ( P. 332)

226 4-3. Do-it-yourself maintenance
3Snow tiresFor driving on snow-covered roads or icy roads, we recommend using
snow tires. If you need snow tires, select tires of the same size, con-
struction and load capacity as the or iginally installed tires. Since your
vehicle has radial tires as original equipment, make sure your snow
tires also have radial construction. Do not install studded tires without
first checking local regulations for possible restriction. Snow tires
should be installed on all wheels. ( P. 151)
■Initializing the tire pr essure warning system
Initialize the tires with the tire inflati on pressure adjusted to the specified
level.
■If you push the tire pressure warning reset switch accidentally
If initialization is performed, adjust the tire in flation pressure to the speci-
fied level and initialize the tire pressure warning system again.
■When the initialization of the tire pressure warning system has
failed
Initialization can be completed in a few minutes. However, in the follow-
ing cases, the settings has not be en recorded and the system will not
operate properly. If repeated attempts to record tire inflation pressure
settings are unsuccessful, have the vehicle inspected by your Scion
dealer.
●When operating the tire pressure warning reset switch, the tire pres-
sure warning light does not blink 3 times.
●After carrying out the initialization procedure, the tire pressure warn-
ing light blinks for 1 minute then stays on after driving for about 20
minutes.
■Routine tire inflation pressure checks
The tire pressure warning system doe s not replace routine tire inflation
pressure checks. Make sure to check tire inflation pressure as part of
your routine of daily vehicle checks.

228 4-3. Do-it-yourself maintenance
CAUTION
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train, as well as
dangerous handling characteristics, which may lead to an accident
resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other t han those recommended by Scion.
●Do not mix differently constructed ti res (radial, bias-belted or bias-ply
tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
●Do not use tires if you do not know how they were used previously.
■When initializing the tire pressure warning system
Do not operate the tire pressure wa rning reset switch without first adjust-
ing the tire inflation pr essure to the specified level. Otherwise, the tire
pressure warning light may not come on even if the tire inflation pressure
is low, or it may come on when the tire inflation pressure is actually nor-
mal.