2023 TOYOTA SIENNA HYBRID Owners Manual

3034-5. Using the driving support systems
4
Driving
Multi-information display
Turning the BSM function/RCTA
function on/off.
Outside rear view mirror indi-
cators
BSM function:
When a vehicle is detected in a
blind spot of the outside rear view
mirrors or approaching rapidly from
behind into a blind spot, the outside
rear view mirror indicator on the detected side will illuminate. If the
turn signal lever is operated toward
the detected side, the outside rear
view mirror indicator will flash.
RCTA function:
When a vehicle approaching from
the right or left at the rear of the
vehicle is detected, both outside
rear view mirror indicators will flash.
BSM OFF indicator/RCTA
OFF indicator
When the Blind Spot Monitor is dis-
abled, the BSM OFF
indicator illu-
minates.
When the RCTA function is dis-
abled, the RCTA OFF indicator illu-
minates.
Monitor screen display
(RCTA function only)
If a vehicle approaching from the
right or left at the rear of the vehicle
is detected, the RCTA icon
(  P.308) for the detected side will
be displayed.
RCTA buzzer (RCTA func-
tion only)
If a vehicle approaching from the
right or left at the rear of the vehicle
is detected, a buzzer will sound
from behind the rear seat.
The BSM function and the
RCTA function can be
enabled/disabled on the
screen of the multi-information
display. ( P.112) Each time the
power switch is turned off then
changed to ON, the BSM func-
WARNING
■Cautions regarding the use of
the RCTA function
There is a limit to the degree of
recognition accuracy and control
performance that this system can
provide, do not ov erly rely on this
system. The driver is always
responsible for paying attention to
the vehicle’s surroundings and
driving safely.
System components
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3044-5. Using the driving support systems
tion//RCTA function will be
enabled automatically.
■Outside rear view mirror indica-
tors visibility
In strong sunlight, the outside rear
view mirror indicato r may be difficult
to see.
■Hearing the RCTA buzzer
The RCTA buzzer may be difficult to
hear over loud noises such as high
audio volume.
■When “Blind Spot Monitor
Unavailable” or “Rear Cross
Traffic Alert Unavailable” is
shown on the multi-information
display
The sensor voltage has become
abnormal, or water, snow, mud,
etc., may be built up in the vicinity of
the sensor area of the rear bumper.
(  P.304)
Removing the water, snow, mud,
etc., from the vicinity of the sensor
area should retur n it to normal.
Also, the sensor may not function
normally when used in extremely
hot or cold weather.
■When “Blind Spot Monitor Mal-
function Visit Your Dealer” or
“Rear Cross Traffic Alert Mal-
function Visit Your Dealer” is
shown on the multi-information
display
There may be a sensor malfunction
or misaligned. Have the vehicle
inspected at a Toyota dealer.
■Customization
Some functions can be customized.
(  P.548)
WARNING
■To ensure the system can
operate properly
Blind Spot Monitor sensors are
installed inside t he left and right
sides of the rear bumper respec-
tively. Observe the following to
ensure the Blind Spot Monitor can
function correctly.
●Keep the sensors and the sur-
rounding areas on the rear
bumper clean at all times.
If a sensor or its surrounding
area on the rear bumper is dirty
or covered with snow, the Blind
Spot Monitor may not operate
and a warning message
(  P.304) will be displayed. In
this situation, clear off the dirt or
snow and drive the vehicle with
the operation conditions of the
BSM function ( P.306) satis-
fied for approximately 10 min-
utes. If the warning message
does not disappear, have the
vehicle inspected by your
Toyota dealer.
●Do not subject a sensor or its
surrounding area on the rear
bumper to a strong impact.
If a sensor is moved even
slightly off position, the system
may malfunction and vehicles
may not be detected correctly.
In the following si tuations, have
your vehicle inspected by your
Toyota dealer.
• A sensor or its surrounding area is subject to a strong impact.

3054-5. Using the driving support systems
4
Driving
■Vehicles that can be detected by the Blind Spot Monitor
The BSM function uses radar sensors to detect the following veh i-
cles traveling in adjacent lanes and advises the driver of the pres-
ence of such vehicles via the indicators on the outside rear vi ew
mirrors.
Vehicles that are traveling in areas that are not visible using the
outside rear view mirrors (the blind spots)
Vehicles that are approaching r apidly from behind in areas that
WARNING

3064-5. Using the driving support systems
are not visible using the outside rear view mirrors (the blind spots)
■The BSM function detection areas
The areas that vehicles can be detected in are outlined below.
The range of each detection area is:
Approximately 1.6 ft. (0.5 m) to 11.5 ft. (3.5 m) from either s ide of
the vehicle
The area between the side of the vehicle and 1.6 ft. (0.5 m) fr om the side of
the vehicle cann ot be detected.
Approximately 3.3 ft. (1 m) forward of the rear bumper
Approximately 9.8 ft. (3 m) from the rear bumper
Approximately 9.8 ft. (3 m) to 197 ft. (60 m) from the rear bum per
The greater the difference in speed between your vehicle and th e detected
vehicle is, the farther away the vehicle will be detected, caus ing the outside
rear view mirror indicato r to illuminate or flash.
■The BSM function is operational
when
The BSM function is operational
when all of the following conditions
are met:
●The BSM function is on.
●The shift lever is in a position
other than R.
●The vehicle speed is greater than
approximately 10 mph (16 km/h).
■The BSM function will detect a
vehicle when
The BSM function will detect a vehi-
cle present in the detection area in
the following situations:
●A vehicle in an adjacent lane over- takes your vehicle.
●You overtake a vehicle in an adja-
cent lane slowly.
●Another vehicle enters the detec-
tion area when it changes lanes.
■Conditions under which the
system will not detect a vehicle
The BSM function is not designed to
detect the following types of vehi-
cles and/or objects:
●Small motorcycles, bicycles,
pedestrians, etc.*
●Vehicles traveling in the opposite
direction
●Guardrails, walls, signs, parked
vehicles and similar stationary
objects
*
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3074-5. Using the driving support systems
4
Driving
●Following vehicles that are in the
same lane*
●Vehicles traveling 2 lanes away
from your vehicle*
●Vehicles which are being over-
taken rapidly by your vehicle
*: Depending on the conditions, detection of a vehicle and/or
object may occur.
■Conditions under which the
system may not function cor-
rectly
●The BSM function may not detect
vehicles correctly in the following
situations:
• When the sensor is misaligned
due to a strong impact to the sen-
sor or its surrounding area
• When mud, snow, ice, a sticker, etc. is covering the sensor or sur-
rounding area on the rear bumper
• When driving on a road surface that is wet with standing water
during bad weather, such as
heavy rain, snow, or fog
• When multiple vehicles are approaching with only a small gap
between each vehicle
• When the distanc e between your
vehicle and a following vehicle is
short
• When there is a significant differ- ence in speed between your vehi-
cle and the vehicle that enters the
detection area
• When the difference in speed
between your vehicle and another
vehicle is changing
• When a vehicle enters a detection
area traveling at about the same
speed as your vehicle
• As your vehicle starts from a stop,
a vehicle remains in the detection
area
• When driving up and down con-
secutive steep inclines, such as
hills, dips in the road, etc.
• When driving on roads with sharp
bends, consecutive curves, or
uneven surfaces
• When vehicle lanes are wide, or when driving on the edge of a
lane, and the vehicle in an adja-
cent lane is far away from your
vehicle
• When an accessory (such as a hitch-mounted bicycle carrier) is
installed to the r ear of the vehicle
• When the vehicl e is heavily
loaded in the luggage compart-
ment
• When there is a significant differ- ence in height between your vehi-
cle and the vehicle that enters the
detection area
• Immediately after the BSM func-
tion/RCTA function are turned on
• When towing a trailer
●Instances of the BSM function
unnecessarily detecting a vehicle
and/or object may increase in the
following situations:
• When the sensor is misaligned due to a strong impact to the sen-
sor or its surrounding area
• When the distance between your vehicle and a guardrail, wall, etc.
that enters the detection area is
short
• When driving up and down con-
secutive steep inclines, such as
hills, dips in the road, etc.
• When vehicle lanes are narrow, or
when driving on the edge of a
lane, and a vehicle traveling in a
lane other than the adjacent lanes
enters the detection area
• When driving on r oads with sharp
bends, consecutive curves, or
uneven surfaces
• When the tires are slipping or spinning
• When the distance between your vehicle and a following vehicle is
short
• When an accessory (such as a hitch-mounted bicycle carrier) is
installed to the r ear of the vehicle
• When the vehicle throws up water
or snow behind.

3084-5. Using the driving support systems
■Operation of the RCTA
function
The RCTA function uses radar
sensors to detect vehicles
approaching from the right or left
at the rear of the vehicle and
alerts the driver of the presence
of such vehicles by flashing the
outside rear view mirror indica-
tors and sounding a buzzer.
Approaching vehicles
Detection areas
■RCTA icon display (if
equipped)
When a vehicle approaching
from the right or left at the rear
of the vehicle is detected, the
following will be displayed on
the audio system screen.
 When the Toyota parking
assist monitor (if equipped) is
displayed 
When the panoramic view
monitor (if equipped) is dis-
played
: The RCTA functi on is malfunc-
tioning ( P.304)
■The RCTA function detec-
tion areas
The areas that vehicles can be
detected in are outlined below.
The buzzer can alert the driver of
faster vehicles approaching from
farther away.
The Rear Cross Traffic
Alert function (if
equipped)
A
B

3094-5. Using the driving support systems
4
Driving
Example:
■The RCTA function is opera-
tional when
The RCTA function operates when
all of the followin g conditions are
met:
●The RCTA function is on.
●The shift lever is in R.
●The vehicle speed is less than
approximately 5 mph (8 km/h).
●The approaching vehicle speed is
between approximately 5 mph (8
km/h) and 17 mph (28 km/h).
■Setting the buzzer volume
The buzzer volume can be adjusted
on the multi-inform ation display.
(  P.112)
■Conditions under which the
system will not detect a vehicle
The RCTA function is not designed
to detect the following types of vehi-
cles and/or objects.
●Vehicles approaching from
directly behind
●Vehicles backing up in a parking
space next to your vehicle
●Vehicles that the sensors cannot
detect due to obstructions
●Guardrails, walls, signs, parked
vehicles and similar stationary
objects
*
●Small motorcycles, bicycles,
pedestrians, etc.*
●Vehicles moving away from your
vehicle
●Vehicles approaching from the
parking spaces nex t to your vehi-
cle
*
●The distance between the sensor
and approaching vehicle gets too
close
*: Depending on conditions, detec- tion of a vehicle and/or object may
occur.
■Situations in which the system
may not operate properly
The RCTA function may not detect
vehicles correctly in the following
situations:
●When the sensor is misaligned
due to a strong impact to the sen-
sor or its surrounding area.
●When mud, snow, ice, a sticker,
etc., is covering the sensor or sur-
rounding area on the rear bumper.
●When driving on a road surface
that is wet with standing water
during bad weather, such as
heavy rain, snow, or fog.
●When multiple vehicles are
approaching with only a small gap
between each vehicle.
●When a vehicle is approaching at
high speed.
●When equipment that may
obstruct a sensor is installed, such
Approach-
ing vehicleSpeed

Approxi- mate
alert dis- tance
Fast18 mph
(28 km/h)65 ft. (20 m)
Slow5 mph (8 km/h)18 ft. (5.5 m)
A

3104-5. Using the driving support systems
as a towing eyelet, bumper pro-
tector (an additional trim strip,
etc.), bicycle carrier, or snow
plow.
●When backing up on a slope with
a sharp change in grade.
●When backing out of a sharp
angle parking spot.
●When towing a trailer.
●When there is a significant differ-
ence in height between your vehi-
cle and the vehicle that enters the
detection area.
●When a sensor or the area around
a sensor is extremely hot or cold.
●If the suspension has been modi-
fied or tires of a size other than
specified are installed.
●If the front of the vehicle is raised
or lowered due to the carried load.
●When turning while backing up.
●When a vehicle tu rns into the
detection area.
■Situations in which the system
may operate even if there is no
possibility of a collision
Instances of the RCTA function
unnecessarily detecting a vehicle
and/or object may increase in the
following situations:
●When the parking space faces a
street and vehicles are being
driven on the street.
●When the distance between your
vehicle and metal objects, such as
a guardrail, wall, sign, or parked
vehicle, which may reflect electri-
cal waves toward the rear of the
vehicle, is short.