BODY ELECTRICAL – TOYOTA PARKING ASSIST SYSTEM
02KBE48Y
Circuit Portion
Urethane Filled Portion
Ultrasonic Sensor*
1
(Front and Rear Corner)
Ultrasonic Sensor*
2
(Rear Center)
BE-110
JCONSTRUCTION AND OPERATION
1. Ultrasonic Sensor
D The ultrasonic sensors are provided with a distance calculation function in order to digitize the signals
between the clearance sonar ECU and the ultrasonic sensor. As a result, the number of wiring harnesses
has been reduced.
D There are two different types of ultrasonic sensors, for the front and rear corners*
1
and the rear center*
2
.
Each ultrasonic sensor consists of a sensor portion that transmits and receives ultrasonic waves and a
pre-amplifier that amplifies them. The distance calculation circuit calculates the distance between the
vehicle and the obstacle based on the received ultrasonic waves. The ultrasonic sensors transmit the
calculated distance signals to the clearance sonar ECU.
D The circuit portion is filled with urethane to prevent water from entering.
*
1
: Models with 4 sensor and 6 sensor type
*
2

: Models with 2 sensor and 6 sensor type
2. Clearance Warning Buzzer
D Depending on the detection distance and the detection area, the sound pattern of the clearance warning
buzzer will vary.
Detection Area
Detection Distance cm (in.)
Buzzer Sound Pattern ON/OFF Time
(sec.)
Long
50 ± 5 to 37.5 ± 4
(19.7 ± 2 to 14.8 ± 2)
0.15/0.15
Corner
Middle
37.5 ± 5 to 25 ± 3
(14.8 ± 2 to 9.8 ± 1.2)
0.075/0.075
Short
25 ± 3 or less
(9.8 ± 1.2 or less)
Continuous Sound/0
Longest
150 ± 15 to 60 ± 6
(59 ± 5.9 to 23.6 ± 2.4)
0.15/0.15
Rear Center
Long
60 ± 6 to 45 ± 5
(23.6 ± 2.4 to 17.7 ± 2)
0.15/0.15

Rear Center
Middle
45 ± 5 to 35 ± 4
(17.7 ± 2 to 13.8 ± 1.6)
0.075/0.075
Short
35 ± 4 or less
(13.8 ± 1.6 or less)
Continuous Sound/0
BE
BODY ELECTRICAL – TOYOTA PARKING ASSIST SYSTEM
263BE150
0.5 ± 0.005 sec.
1.5 ± 0.15 sec.
0.85 sec.
Buzzer
Beep Start
from OFF
ON
OFF
Beep Start
from ON
ON
OFF
Buzzer OFF 7 times
263BE151
0.5 ± 0.005 sec.
0.5 ± 0.05 sec.
0.25 sec.
Buzzer

Beep Start
from OFF
ON
OFF
Beep Start
from ON
ON
OFF
Buzzer OFF 3 times
BE-111
D When the front and rear sensors detect obstacles at the same time, the buzzer sounds as follows.
Buzzer Frequency (sec.)
Front
Short Middle Long Not detected
Rear
Short Middle Long Not detected
Short Buzzer Timing 2 Buzzer Timing 1 Buzzer Timing 1 Continuous Sound/0
Middle Buzzer Timing 1 0.15 0.15 0.15
Long Buzzer Timing 1 0.15 0.3 0.3
Longest Buzzer Timing 1 0.15 0.3 0.8
Not detected Continuous Sound/0 0.15 0.3 None
"
Buzzer Timing 1
A
"
Buzzer Timing 2
A
BODY ELECTRICAL – TOYOTA PARKING ASSIST SYSTEM
02KBE49TE
Front Corner LH

Rear Corner LH
Rear Center
Rear Corner RH
Front Corner RH
02KBE106TE
02KBE105TE
02KBE104TE
02KBE103TE
02KBE102TE
02KBE101TE
02KBE50TE
BE-112
3. Multi-information Display
D The items displayed by the multi-information display are the location of the obstacle, the approximate
distance between the vehicle and the obstacle, and warning messages relating to sensor malfunction,
sensor freezing, or presence of dirt on the sensor. When any warning messages are displayed, the master
warning light illuminates and the clearance warning buzzer sounds.
D The multi-information warning display is provided only for models with 4 and 6 sensor types.
D The number of lines shown on the display changes based on the actual distance and flashes when the
distance is short.
Detection Area
Detection Distance Multi-information Display Condition
Long
50 ± 5 to 37.5 ± 4
(19.7 ± 2 to 14.8 ± 2)
Line: Illuminates
Corner
Middle
37.5 ± 5 to 25 ± 3
(14.8 ± 2 to 9.8 ± 1.2)

Line: Illuminates
Short
25 ± 3 or less
(9.8 ± 1.2 or less)
Line: Flashes
Longest
150 ± 15 to 60 ± 6
(59 ± 5.9 to 23.6 ± 2.4)
Line: Illuminates
Rear Center
Long
60 ± 6 to 45 ± 5
(23.6 ± 2.4 to 17.7 ± 2)
Line: Illuminates
Rear Center
Middle
45 ± 5 to 35 ± 4
(17.7 ± 2 to 13.8 ± 1.6)
Line: Illuminates
Short
35 ± 4 or less
(13.8 ± 1.6 or less)
Line: Flashes
BE
BODY ELECTRICAL – TOYOTA PARKING ASSIST SYSTEM
02KBE110TE
Ultrasonic Sensor Malfunction Warning Ultrasonic Sensor Freeze/
Contamination Warning
02KBE111Y
0.25 ± 0.025 sec.

7.5 ± 0.75 sec. (1 Cycle x 5)
1.5 ± 0.15 sec.
(1 Cycle)
0.75 ± 0.075 sec.
Buzzer
ON
OFF
BE-113
"
Warning Message
A
"
Buzzer Timing
A