2022 TOYOTA 4RUNNER Owners Manual

2974-5. Using the driving support systems
4
Driving
4RUNNER (U)
Multi-information display
Turning the RCTA function on/off.
Outside rear view mirror indica-
tors
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.
Navigation system screen
If a vehicle approaching from the
right or left at the rear of the vehicle
is detected, the RCTA icon (P.
299) for the detected side will be
displayed.
RCTA buzzer
If a vehicle approaching from the right or left at the rear of the vehicle is
detected, a buzzer will sound.
The RCTA function can be enabl ed/disabled on screen of the
multi-information display. ( P. 9 7 )
When the RCTA function is disabled, the “RCTA OFF” indicator wi ll come
on. Each time the engine switch is turned to the “LOCK” position (vehicles
without smart entry & start system) or off (vehicles with smart entry & start
system) then changed to the “ON” position (vehicles without sma rt entry &
start system) or IGNITION ON mode (vehicles with smart entry & start sys-
tem), the RCTA function will be enabled automatically.
RCTA (Rear Cross Traffic Alert)
: If equipped
The RCTA function uses the BSM radar sensors installed on the
inner side of the rear bumper. This function is intended to ass ist
the driver in checking areas that are not easily visible when
backing up.
System components
1
2
3
Turning the RCTA function on/off
4

2984-5. Using the driving support systems
4RUNNER (U)
■Outside rear view mirror indicator visibility
In strong sunlight, the outside rear view mirror indicator may be difficult to
see.
■ Hearing the RCTA buzzer
The RCTA buzzer may be difficult to hear over loud noises, such as if the
audio system volume is high.
■ When “RCTA Unavailable” is shown on the multi-information displ ay
Water, snow, mud, etc., may be attached to the rear bumper around the sen-
sors ( P. 283). Removing the water, snow, mud, etc., from the vicinity of the
sensor area should return it to normal. Also, the sensor may no t function nor-
mally when used in extremely hot or cold weather.
■ When “RCTA Malfunction Visit Your Dealer” is shown on the multi -infor-
mation display
There may be a sensor malfunction or misaligned. Have the vehicle
inspected by your Toyota dealer.
■ Radar sensors
P. 283
■ Customization
Some functions can be customized. ( P. 566)

2994-5. Using the driving support systems
4
Driving
4RUNNER (U)■
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 a nd
alerts the driver of the presence of such vehicles by flashing the
outside rear view mirror indi cators and sounding a buzzer.
Approaching vehicles
Detection areas of approaching vehicles
■RCTA icon display
When a vehicle approaching
from the right or left at the rear
of the vehicle is detected, the
following will be displayed on
the navigation system screen.
Example: Vehicles are
approaching from both sides of
the vehicle.
RCTA function
1
2

3004-5. Using the driving support systems
4RUNNER (U)■
RCTA function detection 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.
Example:
Approaching vehicleSpeed Approximate alert distance
Fast35 mph (56 km/h)130 ft (40 m)
Slow5 mph (8 km/h)18 ft (5.5 m)
WARNING
■ Cautions regarding the use of the system
There is a limit to the degree of recognition accuracy and cont rol perfor-
mance that this system can provide, do not overly rely on this system. The
driver is always responsible for paying attention to the vehicl e’s surround-
ings and driving safely. ( P. 285)
■ To ensure the system can operate properly
 P. 283
1

3014-5. Using the driving support systems
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Driving
4RUNNER (U)
■The RCTA function is operational when
The RCTA function operates when all of the following conditions are met:
● The engine switch is in the “ON” position (vehicles without sma rt entry &
start system) or IGNITION ON m ode (vehicles with smart entry & start sys-
tem).
● The RCTA function is on.
● The shift lever is in R.
● The vehicle speed is less than approximately 9 mph (15 km/h).
● The approaching vehicle speed is between approximately 5 mph (8 km/h)
and 35 mph (56 km/h).
■ Muting a buzzer temporarily
A mute button will be displayed on the multi-information displa y when a vehi-
cle or an object is detected. To mute the buzzer, press. The bu zzers for the
RCTA function and Toyota parking assist-sensor will be muted si multane-
ously.
Mute will be automatically canceled in the following situations :
● When the shift position is changed.
● When there is a malfunction in a sensor or the system is temporarily
unavailable.
● When the function is disabled while it is operating.
● The engine switch is in the “LOCK” position (vehicles without s mart entry &
start system) or turned off (vehicles with smart entry & start system).
■ Conditions under which the system will not detect a vehicle
The RCTA function is not designed to detect the following types of vehicles
and/or objects:
● Vehicles approaching from directly behind
● Vehicles backing up in a parking space next to your vehicle
● Guardrails, walls, signs, parked vehicles and similar stationar y objects
*
●Small motorcycles, bicycles, pedestrians, etc.*
●Vehicles moving away from your vehicle
● Vehicles approaching from the parking spaces next to your vehic le
*
●The distance between the sensor and approaching vehicle gets to o close
*: Depending on the conditions, detection of a vehicle and/or obj ect may
occur.
●
Vehicles that the sensors cannot detect
due to obstructions

3024-5. Using the driving support systems
4RUNNER (U)■
Situations in which the syst em may not operate properly
The RCTA function may not detect vehicles correctly in the foll owing situa-
tions:
● When the sensor is misaligned due to a strong impact to the sensor or its
surrounding area
● When mud, snow, ice, a sticker, etc., is covering the sensor or surrounding
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 be tween
each vehicle
● When a vehicle is approaching at high speed
● When equipment that may obstruct a sensor is installed, such as a towing
eyelet, bumper protector (an additional trim strip, etc.), bicy cle carrier, or
snow plow
● When towing a trailer
● When there is a significant difference in height between your vehicle and the
vehicle that enters the detection area
● When a sensor or the area around a sensor is extremely hot or c old
● If the suspension has been modified or tires of a size other th an specified
are installed
● If the front of the vehicle is raised or lowered due to the car ried load
●
When backing up on a slope with a
sharp change in grade
● When backing out of a sharp angle park-
ing spot

3034-5. Using the driving support systems
4
Driving
4RUNNER (U)■
Situations in which the system may operate even if there is no possibil-
ity of a collision
Instances of the RCTA function unnecessarily detecting a vehicl e and/or
object may increase in the following situations:
● When equipment that may obstruct a sensor is installed, such as a towing
eyelet, bumper protector (an additional trim strip, etc.), bicy cle carrier, or
snow plow
●
When turning while backing up
● When a vehicle turns into the detection
area
● 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 electrical waves toward the rear
of the vehicle, is short

3044-5. Using the driving support systems
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When there are spinning objects near your vehicle such as the f an of an air
conditioning unit
● When water is splashed or sprayed toward the rear bumper, such as from a
sprinkler
● Moving objects (flags, exhaust fumes, large rain droplets or snowflakes, rain
water on the road surface, etc.)
● When the distance between your vehicle and a guardrail, wall, etc., that
enters the detection area is short
● Gratings and gutters
● When a sensor or the area around a sensor is extremely hot or c old
● If the suspension has been modified or tires of a size other th an specified
are installed
● If the front of the vehicle is raised or lowered due to the car ried load
●
When a vehicle passes by the side of
your vehicle
● When a detected vehicle turns while
approaching the vehicle