2018 TOYOTA PRIUS snow chains

PRIUS_OM_OM47B89U_(U)
6237-3. Do-it-yourself maintenance
7
Maintenance and care
■Tire types
●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 tires, summer tires are inadequate for
driving on snow-covered or icy ro ads. For driving on snow-covered
roads or icy roads, the use of snow tires is recommended. When install-
ing snow tires, be sure to replace all four tires.
●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 com-
pared with summer tires in highway driving.
●Snow tires
For 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 fo r possible restrictions. Snow tires
should be installed on all wheels. ( →P. 418)
■If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tire s as snow tires is lost.
■Low profile tires (vehicles with 17-inch tires)
Generally, low profile tires will wear mo re rapidly and tire grip perfor-
mance will be reduced on snowy and/ or icy roads when compared to
standard tires.
Be sure to use snow tires or tire chains on snowy and/or icy roads and
drive carefully at a speed appropriate for road and weather conditions.

624
PRIUS_OM_OM47B89U_(U)
7-3. Do-it-yourself maintenance
■Situations in which the tire pressure warning system may not oper-
ate properly
●In the following cases, the tire pressure warning system may not operate
properly.
• If non-genuine Toyota wheels are used.
• When a replacement tire is used , the system may not operate cor-
rectly due to the structure of the replacement tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• An auxiliary-supported run- flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheel housings.
• If the tire inflation pressure is extremely higher than the specified level.
• If wheel without the tire pressure warning valve and transmitter is
used.
• If the ID code on the tire pressure warning valves and transmitters is not registered in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, largedisplay, airport or other facility that generates strong radio waves or
electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wireless communication device
●When the vehicle is parked, the time taken for the warning to start or go
off could be extended.
●When tire inflation pressure declines rapidly for example when a tire has
burst, the warning may not function.
■The initialization operation
●Make sure to carry out in itialization after adjusting the tire inflation pres-
sure.
Also, make sure the tires are cold be fore carrying out initialization or tire
inflation pressure adjustment.
●If you have accidentally turned the po wer switch off during initialization,
it is not necessary to press the reset switch again as initialization will
restart automatically when the powe r switch has been turned to ON
mode for the next time.
●If you accidentally press the reset s witch when initialization is not neces-
sary, adjust the tire inflation pressu re to the specified level when the
tires are cold, and conduct initialization again.

7028-2. Steps to take in an emergency
PRIUS_OM_OM47B89U_(U)
■The compact spare tire (if equipped)
●The compact spare tire is identified by the label “TEMPORARY USE
ONLY” on the tire sidewall.
Use the compact spare tire temporarily, and only in an emergency.
●Make sure to check the tire inflation pressure of the compact spare tire.
(→ P. 752)
■When using the compact spare tire (if equipped)
As the compact spare tire is not equipped with a tire pressure warning
valve and transmitter, low inflation pressure of the spare tire will not be
indicated by the tire pressure warning system. Also, if you replace the
compact spare tire after the tire pressure warning light comes on, the light
remains on.
■When the compact spare tire is equipped (if equipped)
The vehicle height may become lower when driving with the compact
spare tire compared to when driving with standard tires.
■If you have a flat front tire on a road covered with snow or ice (vehi-
cles with compact spare tire)
Install the compact spare tire on one of the rear wheels of the vehicle.
Perform the following steps and fit tire chains to the front tires:
Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the vehi-
cle.
Fit tire chains to the front tires.
■Jack point
■Storing the jack The mark indicating the jack point is
stamped on the underside of the vehi-
cle.
Place the jack in the same direction as
the mark next to the storage space.
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815Alphabetical index
PRIUS_OM_OM47B89U_(U)
Power door lock switches ..... 173
Power switch......................... 231
Power window switch............ 204
Rear window wiper and washer switch ..................... 266
Rear window and outside rear view mirror
defoggers switch ........ 520, 530
Seat heater switches ............ 537
“SOS” button ......................... 574
S-APGS switch ..................... 366
Talk switch ............................ 488
Telephone switches .............. 488
TRIP switch............................. 93
Vehicle-to-vehicle distance switch ................... 311
VSC OFF switch ................... 410
Window lock switch............... 204
Windshield wipers and washer switch ..................... 260
Wireless charger power supply switch ...................... 557
Tail lights Light switch ........................... 248
Replacing light bulbs............. 660
Talk switch ............................... 488
Telephone switch .................... 488
Theft deterrent system Immobilizer system ................. 89 Tire inflation pressure
Maintenance data ................. 752
Warning light......................... 676
Tire pressure warning system
Function ................................ 620
Initializing .............................. 620
Initializing procedures ........... 621
Installing tire pressure
warning valves and
transmitters ........................ 620
Registering ID codes ............ 621
Warning light......................... 676
Tire information ....................... 758
Tires .......................................... 618 Chains .................................. 419
Checking............................... 618
Glossary ............................... 764
If you have a flat tire ..... 691, 705
Inflation pressure .................. 628
Replacing.............................. 691
Rotating tires ........................ 619
Size....................................... 752
Snow tires ............................. 418
Spare tire ...................... 691, 752
Tire identification number ..... 760
Tire pressure warning system .......... ...................... 620
Uniform Tire Quality Grading .............................. 762
Warning light......................... 676
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