2004 Lexus RX 330 Owners Manual - Page 502

STARTING AND DRIVING (l) Vehicle-to-vehicle warning distance control mode failure If "E1" appears on the display, the system cannot easily measure the vehicle-to-vehicle distance because of a dirty laser radar sensor glass while the dynamic laser cruise control is on. If this code appears, clean the sensor glass with a soft cloth and try setting the preset speed again. If the dirt is removed without cleaning, the system will automatically enter the ready mode. If the system does not enter the ready mode even after cleaning or the code remains on the display, the system might be malfunctioning. Although there is no problem to continue driving, please contact your Lexus dealer. 2 "CRUISE" indicator light " 1 Warning code 3 Master warning light CAUTION Always keep the sensor glass and never allow it to be covered with icicle or any substance, so it can detect the vehicle in front. If there is trouble somewhere in the dynamic laser cruise control while the vehicle-to-vehicle distance control mode is on, the master warning light comes on and the alarm sounds, and one of the warning codes "E1", "E2" or "E3" will appear on the display. Dynamic laser cruise control is automatically cancelled. If "E3" appears on the display, the "CRUISE" indicator light in the instrument cluster also flashes. 479