snow chains TOYOTA SIENNA 2018 Owners Manual (in English)

SIENNA_OM_OM08019U_(U)
2694-5. Using the driving support systems
4
Driving
WARNING
■When to disable the pre-collision system
In the following situations, disable the system, as it may not operate prop-
erly, possibly leading to an accident resulting in death or ser ious injury:
● When the vehicle is being towed
● When your vehicle is towing another vehicle
● When transporting the vehicle via truck, boat, train or similar means of
transportation
● When the vehicle is raised on a lift with the engine running an d the tires
are allowed to rotate freely
● When inspecting the vehicle using a drum tester such as a chass is dyna-
mometer or speedometer tester, or when using an on vehicle whee l bal-
ancer
● When a strong impact is applied to the front bumper or front gr ille, due to
an accident or other reasons
● If the vehicle cannot be driven in a stable manner, such as when the vehi-
cle has been in an accident or is malfunctioning
● When the vehicle is driven in a sporty manner or off-road
● When the tires are not properly inflated
● When the tires are very worn
● When tires of a size other than specified are installed
● When tire chains are installed
● When a compact spare tire is used
● If equipment (snow plow, etc.) that may obstruct the radar sens or or cam-
era sensor is temporarily installed to the vehicle

SIENNA_OM_OM08019U_(U)
2814-5. Using the driving support systems
4
Driving
WARNING
■Before using LDA system
Do not rely solely upon the LDA system. The LDA system does not auto-
matically drive the vehicle or reduce the amount of attention that must be
paid to the area in front of the vehicle. The driver must always assume full
responsibility for driving safely by paying careful attention to the surround-
ing conditions and operating the steering wheel to correct the path of the
vehicle. Also, the driver must take adequate breaks when fatigu ed, such as
from driving for a long period of time.
Failure to perform appropriate driving operations and pay careful attention
may lead to an accident, resulting in death or serious injury.
■ To avoid operating LDA system by mistake
When not using the LDA system, use the LDA switch to turn the s ystem off.
■ Situations unsuitable for LDA system
Do not use the LDA system in the following situations.
The system may not operate properly and lead to an accident, re sulting in
death or serious injury.
● A spare tire, tire chains, etc. are equipped.
● When the tires have been excessively worn, or when the tire inf lation pres-
sure is low.
● Tires which differ by structure, manufacturer, brand or tread p attern are
used.
● Objects or patterns that could be mistaken for white (yellow) l ines are
present on the side of the road (guardrails, curbs, reflective poles, etc.).
● Vehicle is driven on a snow-covered road.
● White (yellow) lines are difficult to see due to rain, snow, fo g, dust, etc.
● Asphalt repair marks, white (yellow) line marks, etc. are prese nt due to
road repair.
● Vehicle is driven in a temporary lane or restricted lane due to construction
work.
● Vehicle is driven on a road surface which is slippery due to rainy weather,
fallen snow, freezing, etc.
● Vehicle is driven in traffic lanes other than on highways and freeways.
● Vehicle is driven in a construction zone.
● Vehicle is towing a trailer or another vehicle.

SIENNA_OM_OM08019U_(U)
3254-5. Using the driving support systems
4
Driving
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the s ystem from
overheating when there is frequent steering input over an exten ded period of
time. The steering wheel may feel heavy as a result. Should thi s occur, refrain
from excessive steering input or stop the vehicle and turn the engine off. The
EPS system should return to normal within 10 minutes.
■ Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assi st control will
operate:
● The shift lever is in a position other than P or N (when starting off forward/
backward on an upward incline).
● The vehicle is stopped.
● The accelerator pedal is not depressed.
● The parking brake is not applied.
■ Automatic system cancelation of hill-start assist control
The hill-start assist control will turn off in any of the following situations:
● The shift lever is shifted to P or N.
● The accelerator pedal is depressed.
● The parking brake is applied.
● Approximately 2 seconds elapse after the brake pedal is release d.
WARNING
■The ABS does not operate effectively when
● The limits of tire gripping performance have been exceeded (suc h as
excessively worn tires on a snow covered road).
● The vehicle hydroplanes while driving at high speed on wet or s lick roads.
■ Stopping distance when the ABS is operating may exceed that of nor-
mal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you, espe cially in the
following situations:
● When driving on dirt, gravel or snow-covered roads
● When driving with tire chains
● When driving over bumps in the road
● When driving over roads with potholes or uneven surfaces

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SIENNA_OM_OM08019U_(U)
4-6. Driving tips
4
Driving
Winter driving tips
●Use fluids that are appropriate t o the prevailing outside tempera-
tures. • Engine oil
• Engine coolant
• Washer fluid
● Have a service technician inspec t the condition of the battery.
● Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the front tires.
Ensure that all tires are the same size and brand, and that cha ins match
the size of the tires.
Perform the following accordi ng to the driving conditions:
● Do not try to forcibly open a window or move a wiper that is fr ozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
● Check for and remove any excess ic e or snow that may have accu-
mulated on the exterior lights, vehicle’s roof, chassis, around the
tires or on the brakes.
● Remove any snow or mud from the bottom of your shoes before
getting in the vehicle.
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a ma n-
ner appropriate to the prevailing weather conditions.
Preparation for winter
Before driving the vehicle

SIENNA_OM_OM08019U_(U)
3294-6. Driving tips
4
Driving
WARNING
■Driving with snow tires
Observe the following precautions to reduce the risk of acciden ts.
Failing to do so may result in a loss of vehicle control and ca use death or
serious injury.
● Use tires of the specified size.
● Maintain the recommended level of air pressure.
● Do not drive in excess of 75 mph (120 km/h), regardless of the type of
snow tires being used.
● Use snow tires on all, not just some wheels.
■ Driving with tire chains
Observe the following precautions to reduce the risk of acciden ts.
Failing to do so may result in the vehicle being unable to be d riven safely,
and may cause death or serious injury.
● Do not drive in excess of the speed limit specified for the tir e chains being
used or 30 mph (50 km/h), whichever is lower.
● Avoid driving on bumpy road surfaces or over potholes.
● Avoid sudden acceleration, abrupt steering, sudden braking and shifting
operations that cause sudden engine braking.
● Slow down sufficiently before entering a curve to ensure that v ehicle con-
trol is maintained.
NOTICE
■ Repairing or replacing snow tires
Request repairs or replacement of snow tires from Toyota dealer s or legiti-
mate tire retailers.
This is because the removal and attachment of snow tires affect s the opera-
tion of the tire pressure warning valves and transmitters.
■ Fitting tire chains
The tire pressure warning valves and transmitters may not funct ion correctly
when tire chains are fitted.

SIENNA_OM_OM08019U_(U)
4256-3. Do-it-yourself maintenance
6
Maintenance and care
■Situations in which the tire pressure warning system may not oper-
ate properly
The tire pressure warning syst em will be disabled in the follow ing condi-
tions:
(When the condition becomes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and tra nsmitters
are used.
●If the ID code on the tire pressure warning valves and transmit ters is not
registered in the tire pr essure warning computer.
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or
higher.
The tire pressure warning system may be disabled in the followi ng condi-
tions:
(When the condition becomes normal, the system will work properly.)
●If electronic devices or facilitie s using similar radio wave frequencies are
nearby.
●If a radio set at similar frequen cies is in use in the vehicle.
●If a window tint that affects the radio wave signals is installed.
●If there is a lot of snow or ice on the vehicle, in particular around the
wheels or wheel housings.
●If non-genuine Toyota wheels are used. (Even if you use Toyota wheels,
the tire pressure warning system may not work properly with som e types
of tires.)
●If tire chains are used.
■Initializing the tire pressure warning system
Initialize the system with the tire inflation pressure adjusted to the speci-
fied level.
■If you press the tire pressure warning reset switch accidentall y
If initialization is performed, adjust the tire inflation press ure to the speci-
fied level and initialize the tire pressure warning system again.
■When the initializati on of the tire pressure warning system has failed
Initialization can be completed i n a few minutes. However, in the following
cases, the settings has not been recorded and the system will n ot operate
properly. If repeated attempts to record tire inflation pressur e settings are
unsuccessful, have the vehicle in spected by your Toyota dealer.
●When operating the tire pressure warning reset switch, the tire pressure
warning light does no t blink 3 times.
●After driving for a certain period of time since the initializa tion has been
completed, the warning light comes on after blinking for 1 minute.

4967-2. Steps to take in an emergency
SIENNA_OM_OM08019U_(U)
■The compact spare tire
●The compact spare tire is identified by the label “TEMPORARY USE
ONLY” on the tire sidewall.
Use the compact spar e tire temporarily, and only in an emergenc y.
●Make sure to check the tire inflation pressure of the compact s pare tire.
(  P. 5 2 4 )
■After completing the tire change
The tire pressure warni ng system must be reset. ( P. 421)
■When using the compact spare tire
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 rep lace the
compact spare tire after the tire pressure warning light comes on, the light
remains on.
■When the compact spa re tire is equipped
The vehicle becomes lower when driving with the compact spare t ire
compared to when driving with standard tires
■If you have a flat front tire on a road covered with snow or ic e
Install the compact spare tire on one of the rear wheels of the vehicle.
Perform the following steps and f it 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.
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582Alphabetical index
SIENNA_OM_OM08019U_(U)
TiresChains................................... 328
Checking ............................... 420
Glossary................................ 535
If you have a flat tire ..... 485, 499
Inflation pressure .................. 429
Information ............................ 529
Replacing .............................. 485
Rotating tires......................... 420
Size ....................................... 522
Snow tires ............................. 327
Tire identification number ..... 531
Tire pressure warning system ......... ....................... 421
Uniform Tire Quality Grading............................... 533
Warning light ......................... 474
Tools ......................................... 488
Total load capacity .................. 516
Towing Dinghy towing ....................... 224
Emergency towing ................ 465
Trailer towing ........................ 210
Toyota Safety Sense P ............ 261
Traction control ....................... 322
TRAC (Traction Control) Function ................................ 322
TRAC OFF switch ................. 323
Trailer towing ........................... 210
Trip meter ................................... 90
Turn signal lights Replacing light bulbs ........... 450, 451, 454, 456
Turn signal lever ................... 239
Wattage ................................ 525 USB charging ports................. 368
USB memory
*
USB port*
Valet key ................................... 104
Vanity lights
Vanity lights .......................... 363
Wattage ................................ 525
Vanity mirrors .......................... 363 Vanity lights .......................... 363
Vehicle data recordings ...... 9, 262
Vehicle identification number ................................... 517
Vehicle stability control (VSC) ...................................... 322
Voice command system
*
VSC (Vehicle Stability
Control) .................................. 322
Warning buzzers Approach warning................. 296
Brake system ....... ................. 471
Electric power steering system .......... ...................... 472
Key reminder ........................ 226
Seat belt reminder ................ 473
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