2005 Lexus RX 330 Owners Manual - Page 462

STARTING AND DRIVING 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. If "E2" appears on the display, the system cannot easily measure the vehicle−to−vehicle distance because of the following conditions: D The wipers are operating at high or low speeds D Direct sunlight from the front D It is difficult to make a measurement because of bad weather (such as rainy, foggy, or snowy weather) D Driving in "SNOW" mode In the following cases, dynamic laser cruise control switches to the ready mode: D The wipers are stopped or are switched to variable intermittent operation. D No direct sunlight from the front In the above conditions, push the lever up in the "+ RES" direction and release it. Dynamic laser cruise control will be restored. If the setting operation cannot be performed or if the warning code still appears even after the weather clears, the system might have malfunctioned. Although there is no problem to continue driving, please contact your Lexus dealer. CAUTION Always keep the sensor glass clear and never allow it to be covered with icicle or any substance, so it can detect the vehicle in front. 431