
279
SIENNA_OM_OM08007U_(U)
4-5. Using the driving support systems
4
Driving
Intuitive parking assist
Front corner sensors 
(if equipped)
Rear corner sensors
Rear center sensors
Turns  the  intuitive  parking  assist
on/off
When on, the indicator light comes
on and the buzzer sounds to inform
the driver that the system is opera-
tional.
: If equipped
The distance from your vehicle  to nearby obstacles when paral-
lel parking or maneuvering into  a garage is measured by the
sensors and communicated via the multi-information display,
the audio system screen and a buzzer. Always check the sur-
rounding area when using this system.
Types of sensors
1
2
3
Intuitive parking assist switch 

280
SIENNA_OM_OM08007U_(U)
4-5. Using the driving support systems
When  the  sensors  detect  an  obstacle,  the  following  displays  inform
the driver of the position an d distance to the obstacle.
■Multi-information display
Front  corner  sensor  opera-
tion
Rear corner sensor operation
Rear center sensor operation
■Audio system screenIntuitive  parking  assist  dis-
play
When the rear view monitor sys-
tem is not displayed.
A  graphic  is  automatically  dis-
played  when  an  obstacle  is
detected. The screen can be set
so  that  the  graphic  is  not  dis-
played. ( P. 283)
Insert display
When the rear view monitor sys-
tem is displayed.
A  simplified  image  is  displayed
on  the  right  upper  corner  of  the
audio  system  screen  when  an
obstacle is detected.
Display
1
2
3
1
2 

284
SIENNA_OM_OM08007U_(U)
4-5. Using the driving support systems
■The intuitive parking assist can be operated when
●The engine switch is in the “ON” position (vehicles without a smart key sys-
tem) or IGNITION ON mode (vehicles with a smart key system).
● Front corner sensors:
• The shift lever is not in P.
• The vehicle speed is approximately 6 mph (10 km/h) or less.
● Rear corner and rear center sensors:
The shift lever is in R.
■ Intuitive parking assist display
When  an  obstacle  is  detected  while  the  rear  view  monitor  system  is  in  use,
the warning indicator will appear in the upper corner of the screen even if the
display setting has been set to off.
■ Sensor detection information
●The  sensor’s  detection  areas  are  limited  to  the  areas  around  the  vehicle’s
bumper.
● Certain  vehicle  conditions  and  the  surrounding  environment  may  affect  the
ability of the sensor to correctly detect obstacles. Particular instances where
this may occur are listed below.
• There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve
this problem.)
• The sensor is frozen. (Thawing the area will resolve this problem.) 
In especially cold weather, if a sensor is frozen the screen may 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,  motorcycle
engines, air brakes of large vehicles, or other loud noises producing ultra-
sonic waves.
• There  is  another  vehicle  equipped  with  parking  assist  sensors  in  the
vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna.
• The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.
• 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 installed.
• People may not be detected if they are wearing certain types of clothing.
In  addition  to  the  examples  above,  there  are  instances  in  which,  because  of
their  shapes,  signs  and  other  objects  may  be  judged  by  the  sensor  to  be
closer than they are. 

SIENNA_OM_OM08007U_(U)
2854-5. Using the driving support systems
4
Driving
●The  shape  of  the  obstacle  may  prevent  the  sensor  from  detecting  it.  Pay
particular attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall  obstacles  with  upper  sections  projecting  outwards  in  the  direction  of
your vehicle
● The following situations may occur during use.
• Depending on  the shape  of the  obstacle  and other  factors,  the detection
distance may shorten, or detection may be impossible.
• Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between obstacle detection and display. Even at slow speeds, there is a possibility that the obstacle will come within the
sensor’s  detection  areas  before  the  display  is  shown  and  the  beep
sounds.
• Thin  posts  or  objects  lower  than  the  sensor  may  not  be  detected  when
approached, even if they have been detected once.
• It might be difficult to hear beeps due to the volume of audio system or air flow noise of the air conditioning system.
■ If the display flashes and a message is displayed
P. 556
■ Certification (Canada only)
This ISM device complies with Canadian ICES-001.
WARNING
■When using the Intuitive parking assist-sensor
Observe the following precautions. 
Failure  to  do  so  may  result  in  the  vehicle  being  unable  to  be  driven  safely
and possibly cause an accident.
●Do not use the sensor at speeds in excess of 6 mph (10 km/h).
● The sensors’ detection areas and reaction times are limited. When moving
forward  or  reversing,  check  the  areas  surrounding  the  vehicle  (especially
the  sides  of  the  vehicle)  for  safety,  and  drive  slowly,  using  the  brake  to
control the vehicle’s speed.
● Do not install accessories within the sensors’ detection areas. 

316
SIENNA_OM_OM08007U_(U)
4-5. Using the driving support systems
■Conditions under which the Rear  Cross Traffic Alert function may not
function correctly
The Rear Cross Traffic Alert function may not detect vehicles correctly in the
following conditions:
● When ice or mud etc. is attached to the rear bumper
● During bad weather such as heavy rain, fog, snow etc.
● When multiple vehicles approach continuously
● Shallow angle parking
● When a vehicle is approaching at high speed
● When parking on a steep incline, such as hills, a dip in the road etc.
● Directly after the BSM main switch is set to on
● When towing a trailer
● Vehicles  that  the  sensors  cannot  detect
because of obstacles 

SIENNA_OM_OM08007U_(U)
6319-2. Customization
9
Vehicle specifications
■Automatic light control system (P. 242)
*1: If equipped
*2: U.S.A. only
■
Intuitive parking assist*1 (  P. 279)
*1: If equipped
*2: When intuitive parking assist is operating.
■
Automatic air condi tioning system (P. 412)
FunctionDefault settingCustomized 
setting
Light sensor sensitivity Standard -2 to 2 O – O
Time elapsed before head-
lights automatically  turn off
after doors are closed 30 secondsOff
O–O
60 seconds
90 seconds
Automatic High Beam
*1On Off – – O
Daytime running light 
system
*2On Off – – O
123
FunctionDefault settingCustomized 
setting
Detection  distance  of  the
rear center sensor Far Near O – O
Buzzer volume Level 3 Level 1 to 5 O – O
Display setting
*2All sensors  displayed Display off O – O
123
FunctionDefault settingCustomized 
setting
A/C  on  operation  linked
with “AUTO” button On Off O – O
123 

664Alphabetical index
SIENNA_OM_OM08007U_(U)
Parking assist sensors (intuitive parking assist) ....... 279
Parking brake ........................... 241 Operation .............................. 241
Parking brake engaged warning 
buzzer/message ......... 545, 558
Parking lights
Light switch ........................... 242
Replacing light bulbs..... 525, 531
Wattage ................................ 608
PCS (Pre-Collision System) Function ................................ 302
Pre-collision braking off switch ................................. 303
Warning light ......................... 546
Warning  message ............. 555, 560, 564
Personal lights Switch ................................... 428
Wattage ................................ 608
Power back door...................... 133
Power outlets ........................... 445
Power windows Jam protection function......... 185
Operation .............................. 184
Window lock switch............... 184
Pre-collision system (PCS) Function ................................ 302
Pre-collision braking off switch ................................. 303
Warning light ......................... 546
Warning  message ............. 555, 560, 564 Quarter windows ..................... 187
Radar cruise control 
(dynamic radar cruise 
control)................................... 266
Radiator .................................... 491
Radio
*...................................... 340
Rear automatic air  conditioning system ............. 421
Rear ceiling light ..................... 429
Rear seat
Adjustment............................ 152
Folding third seats ........ 159, 160
Installing second seats ......... 158
Removing second seats ....... 156
Stowing third seats ....... 161, 163
Rear seat entertainment  system
*
Rear turn signal lights Replacing light bulbs ............ 528
Turn signal lever ................... 240
Wattage ................................ 608
Rear view mirror Compass .............................. 457
Inside rear view mirror .......... 179
Outside rear view mirrors ..... 181
Rear view monitor system ...... 287
Rear window defogger ............ 416
Rear window wiper .................. 257
Replacing  Electronic key battery ........... 511
Fuses .................................... 514
Light bulbs ............................ 517
Rear seat entertainment system control battery
*
Tires...................................... 572
Wireless remote control battery ................................ 511
PQ
R