engine overheat TOYOTA IQ 2012 User Guide

398 5-2. Steps to take in an emergency
iQ_WE_74014E
Stop the vehicle immediately.
The following warnings indicate the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional.
Have the vehicle inspected immediately.
Failing to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional, immedi-
ately.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system.
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low.
(Flashing or
comes on)High engine coolant temperature warning light
Indicates the engine is almost overheating. (P. 435)
Warning lightWarning light/Details
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system;
• The electronic Multidrive control system; or
• The emission control system.

5
435
5-2. Steps to take in an emergency
When trouble arises
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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 fan
If a large amount of coolant leaks,
immediately contact any autho-
rized Toyota dealer or repairer, or
another duly qualified and
equipped professional.
The following may indicate that your vehicle is overheating.
The high engine coolant temperature warning light (P. 398)
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.

464 Alphabetical index
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Care
Exterior.................................. 306
Interior ................................... 310
Seat belts .............................. 311
CD player .................................. 265
Chains ....................................... 233
Child restraint system
Baby seats, definition ............ 137
Baby seats, installation ......... 148
Child seats, definition ............ 137
Child seats, installation ......... 148
Installing CRS with ISOFIX
rigid anchors ....................... 154
Installing CRS with
seat belts ............................ 149
Installing CRS with
top straps ............................ 155
Junior seats, definition .......... 137
Junior seats, installation........ 148
Child safety
Airbag precautions ................ 132
Battery precautions ....... 344, 433
Child restraint system ........... 137
How your child should wear
the seat belt .......................... 89
Installing child restraints........ 148
Power window lock switch .... 100
Power window precautions ... 102
Removed key battery
precautions ......................... 360
Seat belt precautions .............. 89
Seat heater precautions ........ 297
Cleaning
Exterior.................................. 306
Interior ................................... 310
Seat belts .............................. 311
Clock ......................................... 209
Condenser ................................ 342Cooling system
Engine overheating ............... 435
CRS ........................................... 137
Cup holders.............................. 289
Curtain shield airbags ............. 124
Customizable features ............ 459
Daytime running light
system .................................... 214
Defogger
Rear window ................. 252, 254
Side mirrors .......................... 254
Dimension ................................ 444
Display
Audio..................................... 257
Trip information ..................... 205
Do-it-yourself maintenance .... 316
Doors
Back door................................ 75
Door glasses ......................... 100
Door lock..................... 39, 62, 73
Side doors............................... 72
Side mirrors ............................ 95
Double locking system ........... 117
Driver’s seat belt reminder
light......................................... 399
Driving
Break-in tips .......................... 167
Correct posture ..................... 122
Procedures ........................... 164
Winter driving tips ................. 231C
D

465 Alphabetical index
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Eco driving indicator
light ......................... 167, 201, 209
Electric power steering ........... 224
Emergency flashers
Switch ................................... 386
Emergency, in case of
If the electronic key does not
operate properly ................. 427
If the engine will not start ...... 423
If the shift lever cannot be
shifted from P ..................... 425
If the vehicle battery
is discharged ...................... 430
If the warning buzzer
sounds ................................ 397
If the warning light turns
on........................................ 397
If you have a flat tire ............. 405
If you lose your keys ............. 426
If you think something is
wrong .................................. 395
If your vehicle becomes
stuck ................................... 438
If your vehicle has to
be stopped in an
emergency .......................... 440
If your vehicle needs to be
towed .................................. 388
If your vehicle overheats ....... 435
Emergency tire puncture
repair kit ................................. 405
Engine
Compartment ........................ 334
Engine switch ................ 176, 179
Hood ..................................... 319
How to start the
engine ......................... 176, 179
Identification number............. 445
If the engine will not start ...... 423
Ignition switch .............. 176, 179
Overheating .......................... 435Engine coolant
Capacity ................................ 452
Checking ............................... 340
Preparing and checking
before winter....................... 231
Engine immobilizer system .... 108
Engine oil
Capacity ................................ 449
Checking ............................... 336
Preparing and checking
before winter....................... 231
Engine switch .................. 176, 179
EPS ........................................... 224
First-aid kit holder ................... 301
Floor mat .................................. 299
Fluid
Washer ................................. 346
Fog lights
Replacing light bulbs............. 373
Switch ................................... 216
Wattage ................................ 456
Front fog lights
Replacing light bulbs............. 373
Switch ................................... 216
Wattage ................................ 456
Front passenger’s seat belt
reminder light ........................ 399
Front position lights
Replacing light bulbs............. 373
Switch ................................... 211
Wattage ................................ 456
Front seats
Adjustment .............................. 79E
F

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License plate lights
Replacing light bulbs ............. 373
Switch ................................... 211
Wattage................................. 456
Light bulbs
Replacing .............................. 373
Wattage................................. 456
Lights
Emergency flasher switch ..... 386
Fog light switch ..................... 216
Hazard light switch ................ 386
Headlight switch .................... 211
Interior light switch ................ 287
Replacing light bulbs ............. 373
Turn signal lever ................... 193
Wattage................................. 456
Lock steering column...... 177, 182
Luggage box ............................ 301
Luggage compartment
features .................................. 301
Maintenance
Do-it-yourself
maintenance ....................... 316
Maintenance data ................. 444
Maintenance requirements ... 313
Manual air conditioning
system .................................... 238
Manual headlight
leveling dial ............................ 212
Meter ......................................... 197
Mirrors
Inside rear view mirror ............ 92
Side mirror heaters ............... 254
Side mirrors............................. 95
Vanity mirrors ........................ 294
MP3 disc ................................... 272Multidrive
7-Speed Sport Sequential
Shiftmatic mode.................. 187
If the shift lever cannot be
shifted from P ..................... 425
Multidrive .............................. 185
Multi-information
display .................................... 205
Odometer.................................. 206
Oil
Engine oil .............................. 336
Opener
Back door................................ 75
Fuel door............................... 103
Hood ..................................... 319
Outside rear view mirrors
Adjusting and folding .............. 95
Defogger ............................... 254
Outside temperature
display .................................... 205
Overheating, Engine................ 435
Parking brake ........................... 194
Power outlet ............................. 295
Power windows........................ 100
Radiator .................................... 342
Radio......................................... 260
Rear fog lights
Replacing light bulbs............. 374
Switch ................................... 216
Wattage ................................ 456
Rear passenger’s seat belt
reminder light ........................ 399
Rear seat
Folding down rear
seatbacks ............................. 82
Tumbling rear seat cushion .... 83L
M
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471
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What to do if...
What to do if...
A tire puncturesP. 405If you have a flat tire
The engine does not start
P. 423If the engine will not start
P. 108Engine immobilizer system
P. 430If the vehicle battery is discharged
P. 427If the electronic key does not
operate properly
The shift lever cannot be
moved outP. 425If the shift lever cannot be shifted
from P
The engine coolant temperature
warning light flashes or comes on
Steam can be seen coming
from under the hood
P. 435If your vehicle overheats
The key is lostP. 426If you lose your keys
The battery runs outP. 430If the vehicle battery is discharged
The doors cannot be locked
P. 7 2Side doors
P. 427If the electronic key does not
operate properly
P. 3 9Smart entry & start system
The horn begins to soundP. 1 1 9Alarm