flat tire TOYOTA IQ 2012 User Guide

349 4-3. Do-it-yourself maintenance
4
Maintenance and care
iQ_WE_74014E
NOTICE
Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause losses in tire inflation pressure, reducing the
cushioning ability of the tires. In addition driving on rough roads may cause
damage to the tires themselves, as well as the vehicle’s wheels and body.
If tire inflation pressures become low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

350
4-3. Do-it-yourself maintenance
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Tire inflation pressure
Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
Reduced fuel efficiency
Reduced driving comfort and tire life
Reduced safety
Damage to the drive train
If a tire needs frequent refilling, have it checked by any authorized Toyota
dealer or repairer, or another duly qualified and equipped professional.
Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours and has not been
driven for more than 1.5 km or 1 mile, you will get an accurate cold tire
inflation pressure reading.
Always use a tire pressure gauge.
The appearance of the tire can be misleading. In addition, tire inflation
pressures that are even just a few pounds off can degrade ride and han-
dling.
Do not bleed or reduce tire inflation pressure after driving. It is normal for
the tire inflation pressure to be higher after driving.
Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is
balanced.
Make sure to maintain the proper tire inflation pressure. Tire inflation
pressure should be checked at least once per month. However,
Toyota recommends that tire inflation pressure be checked once
every two weeks. (P. 455)

351 4-3. Do-it-yourself maintenance
4
Maintenance and care
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CAUTION
Proper inflation is critical to save tire performance
Keep your tires properly inflated. Otherwise, the following conditions may
occur and result in an accident causing death or serious injury.
Excessive wear
Uneven wear
Poor handling
Possibility of blowouts resulting from overheated tires
Poor sealing of the tire bead
Wheel deformation and/or tire separation
A greater possibility of tire damage from road hazards
NOTICE
When inspecting and adjusting tire inflation pressure
Be sure to reinstall the tire valve caps.
Without the valve caps, dirt or moisture could get into the valve and cause
air leakage, which could result in an accident. If the caps have been lost,
replace them as soon as possible.

5When trouble arises
385
iQ_WE_74014E
5-1. Essential information
Emergency flashers .......... 386
If your vehicle needs
to be towed ..................... 388
If you think something
is wrong .......................... 395
Fuel pump shut off
system ............................ 3965-2. Steps to take
in an emergency
If a warning light turns on
or a warning buzzer
sounds... ......................... 397
If you have a flat tire ......... 405
If the engine will
not start........................... 423
If the shift lever cannot
be shifted from P
(vehicles with
a Multidrive) .................... 425
If you lose your keys ......... 426
If the electronic key does
not operate properly
(vehicles with smart
entry & start system)....... 427
If the vehicle battery is
discharged ...................... 430
If your vehicle
overheats ........................ 435
If the vehicle becomes
stuck ............................... 438
If your vehicle has
to be stopped
in an emergency ............. 440

5
395
5-1. Essential information
When trouble arises
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If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional, as
soon as possible.
Visible symptoms
Fluid leaks under the vehicle
(Water dripping from the air conditioning system after use is
normal.)
Flat-looking tires or uneven tire wear
High engine coolant temperature warning light flashes or
comes on
Low engine coolant temperature indicator comes on or does
not come on continuously
Audible symptoms
Changes in exhaust sound
Excessive tire squeal when cornering
Strange noises related to the suspension system
Pinging or other noises related to the engine
Operational symptoms
Engine missing, stumbling or running rough
Appreciable loss of power
Vehicle pulls heavily to one side when braking
Vehicle pulls heavily to one side when driving on a level road
Loss of brake effectiveness, spongy feeling, pedal almost
touches the floor

5
405
5-2. Steps to take in an emergency
When trouble arises
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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 puncture 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 repairing the tire with the kit,
have the tire repaired or replaced by any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
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 (Multidrive) or N (manual transmis-
sion).
Stop the engine.
Turn on the emergency flashers.
Location of the emergency tire puncture repair kit
Emergency tire
puncture repair kit

414 5-2. Steps to take in an emergency
iQ_WE_74014ECheck the specified tire inflation pressure.
Tire inflation pressure is specified on the label on the driver’s side
pillar as shown. (P. 455)
Left-hand drive vehicles
Right-hand drive vehicles
Start the vehicle’s engine.
To inject the sealant and inflate
the tire, turn the compressor
switch on.

5
415 5-2. Steps to take in an emergency
When trouble arises
iQ_WE_74014EInflate the tire until the specified
air pressure is reached.
The sealant will be injected
and the pressure will spike to
300 kPa (3.1 kgf/cm
2 or bar,
44 psi) or 400 kPa (4.1
kgf/cm
2 or bar, 58 psi), 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 min-
utes (40 minutes at low tem-
perature) with the switch on,
the tire is too damaged to be
repaired. Turn the compressor
switch off and contact any
authorized Toyota dealer or
repairer, or another duly quali-
fied and equipped profes-
sional.
• If the tire inflation pressure
exceeds the specified air pres-
sure, let out some air to adjust
the tire inflation pressure.
(P. 419, 455)

416 5-2. Steps to take in an emergency
iQ_WE_74014EWith 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 5 km (3 miles) below 80 km/h (50 mph).
After driving for about 5 km (3
miles), 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.

5
417 5-2. Steps to take in an emergency
When trouble arises
iQ_WE_74014ETurn 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 130 kPa (1.3 kgf/cm
2 or
bar, 19 psi): The puncture can-
not be repaired. Contact any
authorized Toyota dealer or
repairer, or another duly quali-
fied and equipped profes-
sional.
If the tire inflation pressure is
130 kPa (1.3 kgf/cm
2 or bar,
19 psi) 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 5 km (3 miles)
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.