
5678-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(U)
8
When trouble arises
NOTICE
■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.
■When driving over bumps
If a vehicle has a flat tire, the vehicle height will be lower than usual.
Ensure that nothing strikes the bottom of the vehicle.
■To avoid damaging 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. 493)

5818-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(U)
8
When trouble arises
NOTICE
■When loosening or tightening the spare tire clamp bolt
Do not use an impact wrench. Use the adapter socket and jack handle.
■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 driving 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. 493)
■After taking out or stowing the spare tire
Make sure to secure the tire carrier by tightening the clamp bolt to pre-
vent the holding bracket from hitting the under body of the vehicle dur-
ing driving.
■Using the tire carrier
●As the tire carrier is designed for use with the compact spare tire, it
cannot be used with standard tires.
●If the spare tire is flat, do not use t he tire carrier, as the tire may not be
held securely.

608
SIENNA_OM_OM08013U_(U)
9-1. Specifications
■Recommendation of the use of low emissions gasoline
Gasolines containing oxygenates such as ethers and ethanol, as well as
reformulated gasolines, are available in some cities. These fuels are typically
acceptable for use, providing they meet other fuel requirements.
Toyota recommends these fuels, since the formulations allow for reduced
vehicle emissions.
■ Non-recommendation of the use of blended gasoline
●If you use gasohol in your vehicle, be sure that it has an octane rating no
lower than 87.
● Toyota does not recommend the use of gasoline containing methanol.
■ Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT
(Methylcyclopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of gasoline that contains MMT. If fuel
containing MMT is used, your emission control system may be adversely
affected.
The malfunction indicator lamp on the instrument panel may come on. If this
happens, contact your Toyota dealer for service.
■ If your engine knocks
●Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time while accelerat-
ing or driving uphill. This is normal and there is no need for concern.
●
Use only gasoline containing up to 15%
ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 15% etha-
nol, including from any pump labeled
E30, E50, E85 (which are only some
examples of fuel containing more than
15% ethanol).
DO NOT use gaso-
line containing more
than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

614
SIENNA_OM_OM08013U_(U)
9-1. Specifications
This information has been prepared in accordance with regulations
issued by the National Highway Traffic Safety Administration of the
U.S. Department of Transportation.
It provides the purchasers and/or prospective purchasers of Toyota
vehicles with information on uniform tire quality grading.
Your Toyota dealer will help answer any questions you may have as
you read this information.
■DOT quality grades
All passenger vehicle tires must conform to Federal Safety
Requirements in addition to these grades. Quality grades can be
found where applicable on the tire sidewall between tread shoulder
and maximum section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rating based on the wear
rate of the tire when tested under controlled conditions on a speci-
fied government test course.
For example, a tire graded 150 would wear one and a half (1-1/2)
times as well on the government course as a tire graded 100.
The relative performance of tire s depends upon the actual condi-
tions of their use. Performance may differ significantly from the norm
due to variations in driving habits , service practices and differences
in road characteristics and climate.
■Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C,
and they represent the tire’s ability to stop on wet pavement as
measured under controlled conditio ns 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.
Uniform Tire Quality Grading

663Alphabetical index
SIENNA_OM_OM08013U_(U)
Reporting safety defects for U.S. owners............................ 634
Roof luggage carrier ............... 205
Resetting the message indicating maintenance is
required .................................. 471
Safety connect ......................... 457
Seat belts Adjusting the seat belt ............ 31
Automatic Locking
Retractor............................... 32
Child restra int system
installation ............................ 66
Cleaning and maintaining the seat belts ...................... 467
Emergency Locking Retractor............................... 32
How to wear your seat belt...... 28
How your child should wear the seat belt .......................... 32
Pre-collision seat belt.............. 31
Pregnant women,
proper seat belt use.............. 33
Reminder light....................... 543
Seat belt extenders ................. 32
Seat belt instructions for Canadian owners ............... 635
Seat belt pretensioners ........... 31
SRS warning light ................. 542
Seat heaters ............................. 420
Seat position memory ............. 169
Seating capacity ...................... 209 Seats
Adjustment.................... 149, 152
Adjustment
precaution .................. 151, 166
Child seats/child restraint
system installation ................ 56
Cleaning ............................... 467
Driver’s seat position memory .............................. 169
Head restraint ....................... 173
Properly sitting in the seat ...... 26
Seat heaters ......................... 420
Sensor Inside rear view mirror .......... 180
Intuitive parking assist .......... 275
Radar sensor ................ 270, 299
Rain-sensing windshield
wipers ................................. 252
Service reminder indicators ..... 82
Shift lever Automatic transaxle .............. 233
If the shift lever cannot be shifted from P ................ 584
Shift lock system ..................... 584
Side airbags ............................... 36
Side marker lights Light switch ........................... 239
Replacing.............. 521, 523, 527
Wattage ................................ 606
Side mirrors
Adjusting and folding ............ 181
BSM (Blind Spot Monitor) ..... 305
Heaters ................................. 412
Mirror position memory ......... 169
Sliding doors Sliding doors ......................... 121
Wireless remote control ........ 124
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