Page 334 of 860

334 2-4. Using other driving systems
SIENNA_U (OM45477U)
■Hill-start assist control can be operated when
• The shift lever is in a position other than P.
• The parking brake is not applied.
• The accelerator pedal is not depressed.
■ Hill-start assist control
● While hill-start assist control is operating, the brakes remain automati-
cally applied after the driver releases the brake pedal. The stop lights and
the high mounted stoplight turn on.
● Hill-start assist control operates for about 2 seconds after the brake pedal
is released.
● If the slip indicator does not flash and the buzzer does not sound when
the brake pedal is further depressed, slightly reduce the pressure on the
brake pedal (do not allow the vehicl e to roll backward) and then firmly
depress it again. If the system still does not operate, check if the operat-
ing conditions explained above have been met.
■ Hill-start assist control buzzer
● When hill-start assist control is activated, the buzzer will sound once.
● In the following situations, hill-start assist control will be canceled and the
buzzer will sound twice.
• No attempt is made to drive the vehicle within approximately 2 seconds
of releasing the brake pedal.
• The shift lever is moved to P.
• The parking brake is applied.
• The brake pedal is depressed again.
• The brake pedal has been depressed for more than approximately 3 minutes.
■ If the slip indicator comes on...
It may indicate a malfunction in the system. Contact your Toyota dealer.
Page 350 of 860

350 2-5. Driving information
SIENNA_U (OM45477U)
CAUTION
■When loading cargo
Observe the following precautions:
●Place the cargo so that its weight is distributed evenly between the
front and rear axles.
●If loading long or wide cargo, never exceed the vehicle overall length
or width. (P. 784)
●Before driving, make sure the cargo is securely fastened on the roof
luggage carrier.
●Loading cargo on the roof luggage carrier will make the center of grav-
ity of the vehicle higher. Avoid high speeds, sudden starts, sharp turns,
sudden braking or abrupt maneuvers, otherwise it may result in loss of
control or vehicle rollover due to failure to operate this vehicle correctly
and result in death or serious injury.
●If driving for a long distance, on rough roads, or at high speeds, stop
the vehicle now and then during the trip to make sure the cargo
remains in its place.
●Do not exceed 150 lb. (68 kg) cargo weight on the roof luggage carrier.
NOTICE
■When loading cargo (vehicles with moon roof)
Be careful not to scratch the surface of the moon roof.
Page 366 of 860

366 2-5. Driving information
SIENNA_U (OM45477U)
Trailer towing tipsYour vehicle will handle differently when towing a trailer. Help to avoid
an accident, death or serious injury, keep the following in mind when
towing:
● Speed limits for towing a trailer vary by state or province. Do not
exceed the posted towing speed limit.
● Toyota recommends that the vehicle-trailer speed limit is 65 mph
(104 km/h) on a flat, straight, dry road. Do not exceed this limit, the
posted towing speed limit or the speed limit for your trailer as set
forth in your trailer owner’s man ual, whichever is lowest. Instability
of the towing vehicle-trailer combin ation (trailer sway) increases as
speed increases. Exceeding speed limits may cause loss of con-
trol.
● Before starting out, check the trailer lights, tires and the vehicle-
trailer connections. Recheck after driving a short distance.
● Practice turning, stopping and reve rsing with the trailer attached in
an area away from traffic until you become accustomed to the feel
of the vehicle-trailer combination.
Page 367 of 860

367
2-5. Driving information
2
When driving
SIENNA_U (OM45477U)
●
Reversing with a trailer attached is difficult and requires practice.
Grip the bottom of the steering wheel and move your hand to the
left to move the trailer to the left. Move your hand to the right to
move the trailer to the right. (Thi s is generally opposite to reversing
without a trailer attached.) Avoid sharp or prolonged turning. Have
someone guide you when reversing to reduce the risk of an acci-
dent.
● As stopping distance is increased when towing a trailer, vehicle-to-
vehicle distance should be increased. For each 10 mph (16 km/h) of
speed, allow at least one vehicle and trailer length.
● Avoid sudden braking as you may skid, resulting in the trailer jack-
knifing and a loss of vehicle control. This is especially true on wet
or slippery surfaces.
● Avoid jerky starts or sudden acceleration.
● Avoid jerky steering and sharp turns, and slow down before mak-
ing a turn.
● Note that when making a turn, th e trailer wheels will be closer than
the vehicle wheels to the inside of the turn. Compensate by making
a wider than normal turning radius.
● Slow down before making a turn, in crosswinds, on wet or slippery
surfaces, etc.
Increasing vehicle speed can destabilize the trailer.
Page 369 of 860

369
2-5. Driving information
2
When driving
SIENNA_U (OM45477U)
●
Always place wheel blocks under both the vehicle’s and the
trailer’s wheels when parking. Ap ply the parking brake firmly, and
put the transmission in P. Avoid pa rking on a slope, but if unavoid-
able, do so only after performing the following:
Apply the brakes and keep them applied.
Have someone place wheel blo cks under both the vehicle’s
and trailer’s wheels.
When the wheel blocks are in pl ace, release the brakes slowly
until the blocks absorb the load.
Apply the parking brake firmly.
Shift into P and turn off the engine.
● When restarting after parking on a slope:
With the transmission in P, start the engine. Be sure to keep
the brake pedal pressed.
Shift into a forward gear. If reversing, shift into R.
Release the parking brake and brake pedal, and slowly pull or
back away from the wheel blocks. Stop and apply the brakes.
Have someone retrieve the blocks.
STEP1
STEP2
STEP3
STEP4
STEP5
STEP1
STEP2
STEP3
STEP4
Page 397 of 860

397
3-1. Using the air conditioning system
and defogger
3
Interior features
SIENNA_U (OM45477U)
■When the “A/C ON” in the mu lti-information display flashes
Press
and turn off the air conditioning system before turning it on
once more. There may be a problem in the air conditioning system if the indi-
cator light continues to flash. Turn the air conditioning system off and have it
inspected by your Toyota dealer.
■ Air conditioning odors
● During use, various odors from inside and outside the vehicle may enter
into and accumulate in the air conditioning system. This may then cause
odor to be emitted from the vents.
● To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air
mode prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time immediately after the air conditioning system is started in automatic
mode.
CAUTION
■To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The
difference between the temperature of the outside air and that of the wind-
shield can cause the outer surface of the windshield to fog up, blocking your
vision.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is stopped.
Page 406 of 860

406 3-1. Using the air conditioning system and defogger
SIENNA_U (OM45477U)
■The defogger can be operated when
Vehicles without a smart key system
The engine switch is in the “ON” position.
Vehicles with a smart key system
The “ENGINE START STOP” switch is IGNITION ON mode.
■ Outside rear view mirror defoggers (vehicles with outside rear view
mirror defoggers)
Turning the rear window defogger on will turn the outside rear view mirror
defoggers on.
■ The outside rear view mirror defo ggers and windshield wiper de-icer
(vehicles with windshield wiper de-icer)
Turning the rear window defogger on will turn the outside rear view mirror
defoggers and windshield wiper de-icer on.
CAUTION
■ Outside rear view mirror defoggers (vehicles with outside rear view
mirror defoggers)
The surfaces of the outside rear view mirrors become hot. Do not touch
them to prevent from burning yourself.
■ When the windshield wiper de-icer is on (vehicles with windshield
wiper de-icer)
Do not touch the glass at the lower part of the windshield or to the side of the
front pillars as the surfaces can become very hot and burn you.
Page 484 of 860

484 3-3. Using the Bluetooth
® audio system
SIENNA_U (OM45477U)Vehicles without a smart key system
When the portable player is on standby for the connection, it will be
automatically connected whenever the engine switch is in either
“ACC” or “ON” position.
If a portable player that has already been paired is selected, it is nec-
essary to select “From Car” or “From audio” setting.
Vehicles with a smart key system
When the portable player is on standby for the connection, it will be
automatically connected whenever the “ENGINE START STOP”
switch is in either ACCESSORY or IGNITION ON position.
If a portable player that has already been paired is selected, it is nec-
essary to select “From Car” or “From audio” setting.
Changing the registered name of a portable player
Select “Change Name” using a voice command or .
Select the name of the portable player to be changed by
either of the following methods, and select “Confirm” using a
voice command or :
a. Press the talk switch and say the name of the desired por-table player.
b. Press the talk switch and say “List Audio Players”. When
the name of the desired portable player is read aloud, press
the talk switch.
Press the talk switch or select “Record Name” using ,
and say the new name.
Select “Confirm” using a voice command or .
STEP1
STEP2
STEP3
STEP4