2004 Lexus LS 430 Navigation Manual - Page 162

OTHER FUNCTIONS Malfunction warning D "Clean Sonar" is displayed it icicles, snowflakes or mud get on the sensor or it becomes frozen, which would prevent the sensor from detecting an obstacle. Remove the foreign matter or de-ice the sensor. If the message does not appear after cleaning, the system is operating properly. The sensors operate individually. When one sensor is malfunctioning, 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. UNL404 5u002 "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 (yellow, orange and red) 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. 2 About 25 cm (0.8 ft.) to about 37.5 cm (1.1 ft.): The yellow arc disappears and the beeps sound at shorter intervals than in step 1 . 3 Less than about 25 cm (0.8 ft.): The orange arc disappears and the beeps sound continuously. The system self check is automatically performed when the Lexus park assist system is turned on. At this time it an error is detected, the master warning light comes on accompanied by 5 beeps, the faulty sensor blinks and an on screen message appears. D "Check Sonar" is displayed if the sensor is malfunctioning or a cable is broken. Although in this case the vehicle will continue to operate normally, have your vehicle checked by your Lexus dealer as soon as possible. 110