brakes TOYOTA SIENNA 2019 (in English) Owner's Manual

4647-1. Essential information
SIENNA_OM_OM08025U_(U)
WARNING
■If the engine has to be tu rned off while driving
● Power assist for the brakes and steering wheel will be lost, ma king the
brake pedal harder to depress and the steering wheel heavier to turn.
Decelerate as much as possible before turning off the engine.
● Vehicles without a smart key system: Never attempt to remove the key, as
doing so will lock the steering wheel.

4787-2. Steps to take in an emergency
SIENNA_OM_OM08025U_(U)
WARNING
■If both the ABS and the brake s ystem warning lights remain on
Stop your vehicle in a safe place immediately and contact your To y o t a
dealer. The vehicle will become extremely unstable during braki ng, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.
■ When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
When steering wheel operations are heavier than usual, grip the steering
wheel firmly and operate it using more force than usual.
■
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could
cause a loss of vehicle control and result in death or serious injury.
Vehicles with standard tires:
●Stop your vehicle in a safe place as soon as possible. Adjust t he tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inf lation pres-
sure adjustment, it is probable that you have a flat tire. Chec k the tires.
If a tire is flat, change it with the spare tire and have the f lat tire
repaired by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires dete riorate,
you could lose control of the steering wheel or the brakes.
Vehicles with run-flat tires:
●Decelerate to the lowest appropriate speed as soon as possible. Do
not drive over 50 mph (80 km/h).
●Check and adjust the tire infl ation pressure immediately.
●If the tire pressure warning light comes on even after tire inf lation pres-
sure adjustment, it is probable that you have a flat tire. Have the tire
replaced by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires dete riorate,
you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

4927-2. Steps to take in an emergency
SIENNA_OM_OM08025U_(U)
WARNING
■Replacing a flat tire
●Observe the following precautions.
Failure to do so may result in serious injury:
• Do not touch the disc wheels or the area around the brakes imm edi-
ately after the vehicle has been driven.
After the vehicle has been driven the disc wheels and the area
around the brakes will be extreme ly hot. Touching these areas with
hands, feet or other body parts while changing a tire, etc. may result
in burns.
• Remove the spare tire before jacking up the vehicle. If the sp are tire
is removed after jacking up the vehicle, the tire carrier and t he spare
tire may interfere with the jack and cause a serious accident.
●Failure to follow these precautions could cause the wheel nuts to
loosen and the t ire to fall off, resulting in death or serious injury.
• Have the wheel nuts tightened with a torque wrench to 76 ft•lbf (103 N•m, 10.5 kgf•m) as soon as possible after changing wheels.
• When installing a tire, only use wheel nuts that have been spe cifi-
cally designed for that wheel.
• If there are any cracks or defo rmations in the bolt screws, nut
threads or bolt holes of the wheel, have the vehicle inspected by
your Toyota dealer.
• When installing the wheel nuts, b e sure to install them with the
tapered end facing inward. ( P. 433)
●For vehicles with power sliding door and/or power back door: In cases
such as when replacing tires, make sure to turn off the power s liding
door main switch ( P. 124) and/or the power back door main switch
(  P. 136). Failure to do so may cause the sliding door and/or the back
door to operate unintentionally if the power sliding door switc h and/or
the power back door switch is accidentally touched, resulting i n hands
and fingers being caught and injured.

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SIENNA_OM_OM08025U_(U)
7-2. Steps to take in an emergency
7
When trouble arises
If the electronic key does not operate
properly (vehicles with a smar t key system)
Using the mechanical key
( P. 106) in order to perform
the following operations.
Locks all the doors
Unlocks the door(s)
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 3 seconds
unlocks the other doors.
Shift the shift lever to P and apply the brakes.
Touch the Toyota emblem side
of the electronic key to the
engine switch.
An alarm will sound to indicate that
the start function cannot detect the
electronic key that is touched to the
engine switch if any of the doors is
opened and closed while the key is
touched to the switch.
Press the engine switch within 10 seconds after the buzzer soun ds,
keeping the brak e pedal depressed.
In the event that the engine switch cannot be operated, contact your
Toyota dealer.
If communication between the electronic key and vehicle is
interrupted ( P. 119) or the electr onic key cannot be used
because the battery is depleted, the smart key system and wire-
less remote control cannot be used. In such cases, the doors
can be opened or the engine can be started by following the pro -
cedure below.
Locking and unlocking the door s and key linked functions
1
2
Starting the engine
1
2
3

522
SIENNA_OM_OM08025U_(U)
8-1. Specifications
*1: Minimum pedal clearance when depressed with a force of 110 lbf (490 N,
50 kgf) while the engine is running
*2: Parking brake pedal travel when depressed with a force of 67.4 lbf (300 N,
30.6 kgf)
17-inch tires
Brakes
Pedal clearance*12.99 in. (76 mm)
Pedal free play 0.04  0.24 in. (1  6 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit 0.04 in. (1.0 mm)
Parking brake pedal travel*23  6 clicks
Fluid type SAE J1703 or FMVSS No.116 DOT 3
Steering
Free play Less than 1.2 in. (30 mm)
Tires and wheels
Tire sizeP235/60R17 100T
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Rear:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Driving at high speeds (above 100
mph [160 km/h]) (in countries where
such speeds are permitted by law)
Add 3 psi (20 kPa, 0.2 kgf/cm
2 or
bar) to the front tires and rear tires.
Never exceed the maximum cold tire
inflation pressure indicated on the
tire sidewall.
Wheel size 17 x 7J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

SIENNA_OM_OM08025U_(U)
5358-1. Specifications
8
Vehicle specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressure Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressure The maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended
inflation pressure Cold tire inflation pressure recommended by a
manufacturer
Accessory weight The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded
vehicle weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight 150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distribution Distribution of occupants in a vehicle as speci-
fied in the third
column of Table 1
* below
Production options
weight The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy
duty battery, and special trim