parking sensors TOYOTA COROLLA 2021 Owners Manual (in English)

2604-5. Using the driving support systems
COROLLA_U
■Operation of the RCTA function
The RCTA function uses rear side 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 out side
rear view mirror indicators 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 audio system display.
 Toyota parking assist moni-
tor: Vehicles are approaching
from both sides of the vehicle
■RCTA function detection areas
The areas that vehicles can be detected in are outlined below.
RCTA function

2614-5. Using the driving support systems
4
Driving
COROLLA_U
The buzzer can alert the driver
of faster vehicles approaching
from farther away.
Example:
■The RCTA function is opera-
tional when
The RCTA function operates when
all of the followin g conditions are
met:
●The engine swit ch is in ON.
●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 18 mph (28 km/h).
■Conditions under which the
RCTA function 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
*
*
: Depending on the conditions, detection of a v ehicle and/or
object may occur.
■Conditions under which the
RCTA function may not function
correctly
●The RCTA function may not detect
vehicles correctly in the following
situations:
• When a sensor i s misaligned due
to a strong impact to the sensor or
its surrounding area
• When mud, snow, ice, a sticker, etc. is covering a sensor or its 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
• If a vehicle is approaching the rear
of your vehicle rapidly
• When a towing eyelet is installed to the rear of the vehicle. (if
equipped)
• When backing up on a slope with a sharp change in grade
Approaching
vehicle speed Approximate
alert distance
18 mph (28
km/h) (fast)65 ft. (20 m)
5 mph (8 km/h) (slow)18 ft. (5.5 m)

2624-5. Using the driving support systems
COROLLA_U• When backing out of a shallow
angle parking spot
• Immediately after the RCTA func- tion is turned on
• Immediately after the engine is started with the RCTA function on
• When the sensors cannot detect a
vehicle due to obstructions
●Instances of the RCTA function
unnecessarily detecting a vehicle
and/or object may increase in the
following situations:
• When a vehicle passes by the side of your vehicle
• 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
• When a towing eyelet is installed to the rear of the vehicle (if
equipped)