horn TOYOTA SIENNA 2019 Owners Manual (in English)

1773-4. Adjusting the steering wheel and mirrors
3
Operation of each component
SIENNA_OM_OM08025U_(U)
Steering wheel
Hold the steering wheel and
push the lever down.
Adjust to the ideal position by
moving the steering wheel hori-
zontally and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
To sound the horn, press on or
close to the mark.
Adjustment procedure
1
2
Horn

SIENNA_OM_OM08025U_(U)
3214-5. Using the driving support systems
4
Driving
WARNING
■Sensors
Certain vehicle conditions and the surrounding environment may affect the
ability of a sensor to correctl y detect an obstacle. Particular instances where
this may occur are listed below.
● There is dirt, snow or ice on the sensor. (Wiping the sensors w ill resolve
this problem.)
● The sensor is frozen. (Thawing the area will resolve this probl em.)
In especially cold weather, if a sensor is frozen the screen ma y show an
abnormal display, or obstacles may not be detected.
● The sensor is covered in any way.
● The vehicle is leaning considerably to one side.
● On an extremely bumpy road, on an incline, on gravel, or on grass.
● The vicinity of the vehicle is noisy due to vehicle horns, moto rcycle
engines, air brakes of large vehicles, or other loud noises pro ducing ultra-
sonic waves.
● There is another vehicle equipped with parking assist sensors i n the vicin-
ity.
● The sensor is coated with a sheet of spray or heavy rain.
● The sensor is drenched with water on a flooded road.
● The vehicle is equipped with a fender pole or wireless antenna.
● Towing eyelets are installed.
● The bumper or sensor receives a strong impact.
● The vehicle is approaching a tall or curved curb.
● The detection range is reduced due to an object such as a sign.
● In harsh sunlight or intense cold weather.
● The area directly under the bumpers is not detected.
● If obstacles draw too close to the sensor.
● A non-genuine Toyota suspension (lowered suspension, etc.) is i nstalled.
● A backlit license plate is installed.
In addition to the examples above, there are instances in which , because of
their shape, signs and other objects may be judged by a sensor to be closer
than they are.

501
SIENNA_OM_OM08025U_(U)
7-2. Steps to take in an emergency
7
When trouble arises
If the engine will not star t
One of the following may be the cause of the problem:
● There may not be sufficient f uel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine again following correct starting proc edures.
(  P. 225, 228)
● There may be a malf unction in the engine immobilizer system.
(  P. 77)
One of the following may be the cause of the problem:
● The battery may be discharged. ( P. 505)
● The battery terminal connecti ons may be loose or corroded.
The engine starting system may be malfunctioning due to an elec trical
problem such as an electronic key battery depletion or a blown fuse.
However, an interim measure is a vailable to start the engine.
(  P. 502)
If the engine will not start eve n though correct starting proce -
dures are being followed ( P. 225, 228), consider each of the fol-
lowing points:
The engine will not start even t hough the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and he ad-
lights are dim, or the horn does not sound or sounds at a low
volume.
The starter motor does not turn over (vehicles with a smart key
system)

5027-2. Steps to take in an emergency
SIENNA_OM_OM08025U_(U)
One of the following may be the cause of the problem:
● One or both of the battery t erminals may be disconnected.
● The battery may be discharged. ( P. 505)
● There may be a malfunction in the steering lock system (vehicle
with a smart key system).
Contact your Toyota dealer if the problem cannot be repaired, o r if repair
procedures are unknown.
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the engine switch is fun ctioning
normally:
Set the parking brake.
Shift the shift lever to P.
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the engine can be start ed using the above steps, the sy stem
may be malfunctioning. Have the vehicle inspected by your Toyot a
dealer.
The starter motor does not turn over, the interior lights and h ead-
lights do not turn on, o r the horn does not sound.
Emergency start function (vehicles with a smart key system)
1
2
3
4

569What to do if... (Troubleshooting)
SIENNA_OM_OM08025U_(U)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 79)
To stop the alarm, turn the engine switch to the “ON” position (vehicles with-
out a smart key system) or IGNITION ON mode (vehicles with a sm art key
system) or start the engine.
●Is the message displayed on the multi-information display?
Check the message on the multi-information display. ( P. 481)
●When a warning light turns on or a warning message is displayed , refer to
P. 471, 481.
●Vehicles with run-flat tires:
Slow down the vehicle, drive wit h extra caution, and take your vehicle
to the nearest Toyota dealer or authorized tire dealer as soon as possi-
ble to have the tire replaced. ( P. 4 9 9 )
●Vehicles with a compact spare tire:
Stop the vehicle in a safe place and replace the flat tire with the spare
tire. ( P. 485)
●Try the procedure for when the vehicle becomes stuck in mud, di rt, or
snow. ( P. 512)
An alarm is activated and t he horn sounds (if equipped)
A warning buzzer sounds w hen leaving the vehicle
(vehicles with a smart key system)
A warning light turns on or a warning message is displayed
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

575Alphabetical index
SIENNA_OM_OM08025U_(U)
FuelCapacity ................................ 518
Fuel gauge .............................. 90
Fuel pump shut off system.... 470
Gas station information ......... 584
Information ............................ 526
Refueling............................... 258
Type ...................................... 518
Warning light ......................... 473
Fuel consumption information .............................. 99
Fuel filler door.......................... 258 Refueling............................... 258
Fuel pump shut off system ..... 470
Fuses ........................................ 439
Garage door opener ................ 374
Gauges ....................................... 89
Glove box ................................. 351
Grocery bag hooks .................. 373 Hands-free system
(for cellular phone)
*
HDMI port*
Head restraints ........................ 173
Headlights
Automatic High Beam system .......... ...................... 246
Discharge headlights
precautions......................... 459
Light switch ........................... 241
Manual headlight leveling dial...................................... 243
Replacing light bulbs .... 445, 447
Wattage ................................ 525
Heaters Front automatic air conditioning system............ 332
Heated steering wheel .......... 344
Outside rear view mirrors ..... 336
Rear automatic air conditioning system............ 341
Seat heaters ......................... 344
Hill-start assist control ........... 323
Hood ......................................... 407
Hooks
Cargo .................................... 361
Grocery bag .......................... 373
Retaining hooks (floor mat) .... 26
Horn .......................................... 177
G
H
*: Refer to “NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”