2003 Lexus LS 430 Owners Manual - Page 260

STARTING AND DRIVING Malfunction warning 31L149b 31L171a "Corner obstacles Depending on the distance between your vehicle and the obstacle, the display and beeps change as follows: 1 About 37.5 cm (1.1 ft.) to about 50 cm (1.5 ft.): 3 arcs appear on the corner of the vehicle mark where the obstacle is detected. At this time, the beeps remind you that your vehicle is getting closer to the obstacle by sounding intermittently. About 25 cm (0.8 ft.) to about 37.5 cm (1.1 ft.): The number of arcs will decrease from 3 to 2. The beeps sound at shorter intervals than in step 1 . Less than about 25 cm (0.8 ft.): The number of arcs will decrease from 2 to 1, and the bar blinks while the beeps sound continuously. If a sensor malfunctions, a beep sounds for about 7 seconds and blinking indicators show which sensor is not working properly. If the above screen appears on the display, the following causes are suspected. D The sensor is malfunctioning or a cable has broken. D Icicles, snowflakes or mud gets on the sensor. The sensors operate individually. When one sensor is malfunctioning, you will notice sounding beeps and blinking indicators to show that it is malfunctioning. If another sensor detects an obstacle during this time, the approximate distance to the obstacle will be shown by that sensor. 2 3 246