Page 475 of 568

5
When trouble arises
475
5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
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 drivin
g 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 Toyota 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 Toyota 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. 390)
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5
When trouble arises
487
5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
If your vehicle overheats
Correction procedures■ If the high coolant temperatur e warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air condition-
ing system, and then stop the hybrid system.
If you see steam: Carefully lift the hood after the steam subsides.
If you do not see steam: Carefully lift the hood.
After the hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core
(radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The following may indicate that your vehicle is overheating.
●The high coolant temperature warning light ( P. 445) comes on
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle s peed does not increase.)
● The hybrid system overheat warning light ( P. 449) comes on.
● Steam comes out from under the hood.
STEP 1
STEP 2
STEP 3
Page 489 of 568
5
When trouble arises
489
5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
■
If the hybrid system overheat warning light comes on
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has
cooled down, inspect the hoses
and radiator core (radiator) for
any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The coolant level is satisfactory if
it is between the “F” and “L” lines
on the reservoir.Reservoir
“F”
“L”
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and check for the instrument cluster.
If the hybrid system overheat warning light does not turn off: Stop the hybrid system and c ontact your Toyota dealer.
If the hybrid system overheat warning light does not come on:
Have the vehicle inspected at the nearest Toyota dealer.
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
Page 516 of 568

516 6-1. Specifications
PRIUS v_OM_OM47840U_(U)
■Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C,
and they represent the tire’s ab ility to stop on wet pavement as
measured under controlled cond itions on specified government
test surfaces of asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking
(straight ahead) traction tests and does not include cornering (turn-
ing) traction.
■ Temperature A, B, C
The temperature grades are A (the highest), B, and C, represent-
ing the tire’s resistance to the generation of heat and its ability to
dissipate heat when tested under controlled conditions on a speci-
fied indoor laboratory test wheel.
Sustained high temperature can cause the material of the tire to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire failure.
Grade C corresponds to a level of performance which all passenger
car tires must meet under the Federal Motor Vehicle Safety Standard
No. 109.
Grades B and A represent higher levels of performance on the labo-
ratory test wheel than the minimum required by law.
Warning: The temperature grades of a tire assume that it is properly
inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either sepa-
rately or in combination, can cause heat buildup and possible tire fail-
ure.
Page 530 of 568
530 6-2. Customization
PRIUS v_OM_OM47840U_(U)
ItemFunctionDefault set-tingCustom-ized
setting
Panoramic
roof shades
door lock-
linked auto-
matic closing
function
( P. 321) Operates when
the “POWER”
switch is turned
off and the doors
are locked from
inside or outside
the vehicle using
the wireless
remote control,
or are locked
from outside the
vehicle using the
smart key sys-
tem or mechani-
cal key
ON OFF – – O
Reverse
warning
buzzer
( P. 190) Operation sig-
nals (buzzer)
when shifting
into R
Beeps
repeatedly Beeps
once ––O
Seat belt
reminder
( P. 452) Vehicle speed
linked seat belt
reminder buzzer
ON OFF – – O
Page 531 of 568
531
6
Vehicle specifications
PRIUS v_OM_OM47840U_(U)
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Maintenance data After the maintenance is performed P. 356
Tire pressure warning
system • When rotating the tires on vehicles
with differing front and rear tire infla-
tion pressures
• When changing the tire size P. 391
The following items must be init
ialized for normal system operation
after such cases as the 12-volt batt ery being reconnected, or mainte-
nance being performed on the vehicle.
Page 551 of 568
551
Abbreviation list
PRIUS v_OM_OM47840U_(U)
ABBREVIATIONSMEANING
OBDOn Board Diagnostics
PCSPre-Collision System
PWRPower
SRSSupplemental Restraint System
TINTire Identification Number
TPMSTire Pressure Monitoring (Warning) System
TRACTraction Control
TWITreadwear Indicator
VINVehicle Identification Number
VSCVehicle Stability Control
Page 552 of 568

552
PRIUS v_OM_OM47840U_(U)
Alphabetical index
Alphabetical index
A/CAir conditioning filter .............. 405
Automatic air conditioning
system ................................ 278
ABS ........................................... 250
Air conditioning filter............... 405
Air conditioning system Air conditioning filter .............. 405
Automatic air conditioning
system ................................ 278
Steering wheel climate remote control switches ...... 291
Airbags Airbag operating conditions............................ 128
Airbag precautions for your child .................................... 132
Airbag warning light............... 446
Curtain shield airbag
operating conditions............ 128
Curtain shield airbag
precautions ......................... 132
Front passenger occupant classification system ........... 138
General airbag precautions ......................... 132
Knee airbag ........................... 124
Locations of airbags .............. 124
Modification and disposal of airbags ............................ 137
Proper driving posture ........... 122
Side airbag operating conditions............................ 128
Side airbag precautions ........ 132
Side and curtain shield airbags operating
conditions............................ 128
Side and curtain shield airbags precautions ............ 132
SRS airbags .......................... 124
SRS airbag instructions for Canadian owners. ............... 538 Antenna .................................... 354
Anti-lock brake system ........... 250
Armrest ..................................... 319
Assist grips .............................. 324
Audio input
*
Audio remote control switches*
Audio system*
Audio/video system*
Automatic air conditioning
systemAir conditioning filter.............. 405
Air conditioning system ......... 278
Automatic air conditioning system ................................ 278
Steering wheel climate
remote control switches ...... 291
Automatic headlight leveling system .................................... 218
Automatic light control system .................................... 213
AUX port
*
Auxiliary box .................... 310, 328
Back door
Back door ................................ 79
Smart key system .. ................. 57
Wireless remote control .......... 72
Back-up lights Replacing light bulbs ............. 420
Wattage................................. 506
Battery Checking ............................... 384
If the 12-volt battery is
discharged .......................... 481
Preparing and checking
before winter ....................... 271
A
B