2006 Lexus GS 300 Owners Manual - Page 400

STARTING AND DRIVING The warning for the obstacle closer to the vehicle will be issued. The above illustration indicates the obstacle detected by the back sensors is closer to the vehicle. So, the warning for the obstacle detected by the back sensors will be given. 2 The obstacle detected on the front or rear of the vehicle is in an area where continuous beeping should sound: Detection range of sensors* If the possibility of collision with the obstacle is high as shown, the system warns the driver by continuous beeping (repeating 6 intermittent beeps and one longer beep as one cycle). 3 Both obstacles detected on the front and rear of the vehicle are in areas where continuous beeping should sound: G31061 If the possibility of collision with the obstacles is very high as shown, the system warns the driver by continuous beeping (repeating 2 quick beeps and one longer beep as one cycle). CAUTION It might be difficult to hear beeps due to the volume of audio or air flow noise of air conditioning. To avoid an accident or injury, drive slowly using the brakes while confirming a safe distance around your vehicle with your eyes. " 1 About 3 m (10 ft.) 2 About 1 m (3 ft.) 3 About 1m 50 cm (5 ft.) 4 About 50 cm (1.5 ft.) The sensor detection range is limited around the bumper. Be sure to confirm a safe distance around your vehicle and drive slowly. 376