2006 Lexus IS 350 Navigation Manual - Page 256

IS350/250_Navi_U (L/O 0508) 256 LEXUS PARKING ASSIST −SENSOR - Back sensors Multi−information display: The indicator bars come on depending on the distance to the obstacle and flash when the distance between the vehicle and the obstacle is than about 1.1 ft. (35 cm). Touch screen: When an obstacle is detected, indicator bars illuminate in yellow. The number of the indicator bars reduces as the vehicle gets closer to the obstacle, and turn red when the distance between the vehicle and obstacle is less than 1.1 ft. (35 cm). Beeps: As distance to the obstacle gets closer, the interval of the intermittent sound gets shorter, and then finally changes to a continuous sound when the distance between the vehicle and the obstacle is less than about 1.1 ft. (35 cm). " Multi−information display CAUTION When reversing, be sure to visually confirm a safe distance around your vehicle to avoid an accident. " Touch screen 1 About 1.8 ft. (60 cm) to about 4.5 ft. (150 cm) 2 About 1.4 ft. (45 cm) to about 1.8 ft. (60 cm) 3 About 1.1 ft. (35 cm) to about 1.4 ft. (45 cm) 4 Less than about 1.1 ft. (35 cm) The back sensor only operates when the transmission is in "R" (automatic transmission) or reverse (manual transmission), it checks the approximate distance to obstacles close to the rear of the vehicle, and sounds a warning depending on the distance.