Page 350 of 872
350 2-4. Using other driving systems
SIENNA_OM_OM45483U_(U)
The Blind Spot Monitor functionThe Blind Spot Monitor function uses radar sensors to detect vehicles
that are traveling in an adjacent la ne in the area that is not reflected
in the outside rear view mirror (the blind spot), and advises the driver
of the vehicles existence via the outside rear view mirror indicator.
The Blind Spot Monitor function detection areas
The areas that vehicles can be detected in are outlined below.
The range of the detection area
extends to:Approximately 11.5 ft. (3.5 m)
from the side of the vehicle
The first 1.6 ft. (0.5 m) from the
side of the vehicle is not in the
detection area
Approximately 9.8 ft. (3 m)
from the rear bumper
Approximately 3.3 ft. (1 m) for-
ward of the rear bumper
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2
When driving
SIENNA_OM_OM45483U_(U)
The Rear Cross Traffic Alert function
The Rear Cross Traffic Alert Functions when your vehicle is in
reverse. It can detect other vehicles approaching from the right or left
rear of the vehicle. It uses radar sensors to alert the driver of the
other vehicle’s existence through flashing the outside rear view mirror
indicators and sounding a buzzer.
Approaching vehicles
Detection areas
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356 2-4. Using other driving systems
SIENNA_OM_OM45483U_(U)
■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
■ Rear Cross Traffic Alert buzzer hearing
Rear Cross Traffic Alert function may be difficult to hear over loud noises
such as high audio volume.
●Vehicles that the sensors cannot detect
because of obstacles
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SIENNA_OM_OM45483U_(U)
■The outside rear view mirror indicators visibility
When under strong sunlight, the outside rear view mirror indicator may be
difficult to see.
■ When there is a malfunction in the Blind Spot Monitor system
If a system malfunction is detected due to any of the following reasons,
warning lights will turn on: ( P. 744)
● There is a malfunction with the sensors
● The sensors have become dirty
● The outside temperature is extremely high or low
● The sensor voltage has become abnormal
■ Certification for the Blind Spot Monitor system
For vehicles sold in the U.S.A.
FCC ID: OAYSRR2A
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference
that may cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
For vehicles sold in Canada
Applicable law: Canada 310
This device complies with Industry Canada licence-exempt RSS stan-
dard(s). Operation is subject to the following two conditions: (1) this device
may not cause interference, and (2) this device must accept any interfer-
ence, including interference that may cause undesired operation of the
device.
Frequency bands: 24.05-24.25 GHz
Output power: less than 20 milliwatts
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When driving
SIENNA_OM_OM45483U_(U)
CAUTION
■Handling the radar sensor
One Blind Spot Monitor sensor is installed inside the left and right side of the
vehicle rear bumper respectively. Observe the following to ensure the Blind
Spot Monitor system can function correctly.
●Do not subject the sensor or surrounding area on the bumper to a strong
impact. If the sensor moves even slightly off position, the system may mal-
function and vehicles that enter the detection area may not be detected. If
the sensor or surrounding area is subject to a strong impact, always have
the area inspected by your Toyota dealer.
● Do not disassemble the sensor.
● Do not attach accessories or stickers to the sensor or surrounding area on
the bumper.
● Do not modify the sensor or surrounding area on the bumper.
● Do not paint the sensor or surrounding area on the bumper.
●Keep the sensor and its surrounding
area on the bumper clean at all times.
Page 638 of 872
638 3-8. Other interior features
SIENNA_OM_OM45483U_(U)
NOTICE
■To avoid a compass malfunctions
Do not place magnets or any metal objects near the roof of the vehicle.
Doing this may cause a malfunction of the compass sensor.
■ To ensure normal operation of the compass
●Do not perform circling calibration of the compass in a place where the
earth’s magnetic field is subject to inte rference by artificial magnetic fields.
● During calibration, do not operate electric systems (moon roof, power win-
dows, etc.) as they may interfere with the calibration.
Page 650 of 872

650 4-1. Maintenance and care
SIENNA_OM_OM45483U_(U)
CAUTION
■When washing the vehicle
Do not apply water to the inside of the engine compartment. Doing so may
cause the electrical components etc. to catch fire.
■ When cleaning the windshield (vehicles with rain-sensing windshield
wiper)
●When the upper part of the windshield where the raindrop sensor is
located is touched by hand
● When a wet rag or similar is held close to the raindrop sensor
● If something bumps against the windshield
● If you directly touch the raindrop sensor body or if something bumps into
the raindrop sensor
■ Precautions regarding the exhaust pipe
Exhaust gasses cause the exhaust pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe until it has cooled
sufficiently, as touching a hot exhaust pipe can cause burns.
Set the wiper switch to off.
If the wiper switch is in “AUTO”, the wip-
ers may operate unexpectedly in the fol-
lowing situations, and may result in hands
being caught or other serious injuries and
cause damage to the wiper blades.
Off
Page 717 of 872

717
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_OM_OM45483U_(U)
FuseAmpereCircuit
32 ALT 140 A Charging system, horn, left-hand
headlight (low beam), right-hand
headlight (low beam), fog light, out-
side rear view mirror heaters, rear
window defoggers, windshield
wiper de-icer
33 RAD NO.1 15 A Audio system
34 DOME 7.5 AVanity lights, personal/interior
lights, personal lights, engine
switch light, rear ceiling lights, door
courtesy lights, luggage compart-
ment light, gauges and meters,
clock
35 ECU-B 10 AMain body ECU, smart key system,
wireless remote control, power
back door, power sliding door, rear
view monitor, multi information dis-
play, power window, outside rear
view mirror control, steering angle
sensor, auto-anti glare inside rear
view mirror, AUTO ACCESS SEAT
remote control, front passenger
occupant classification system
36 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
37 A/F 20 AMultiport fuel injection system/
sequential multiport fuel injection
system
38 STRG LOCK
*420 A Steering lock system
39 ALT-S 7.5 A Charging system