2007 Toyota Avalon Owners Manual - Page 610

If "C1" 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 Toyota dealer. If "C2" 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) In the following cases, dynamic laser cruise control switches to the ready mode: VEHICLE−TO−VEHICLE DISTANCE CONTROL MODE FAILURE WARNING 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 "C1", "C2" 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. D The wipers are stopped or switched to intermittent operation. are 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 Toyota dealer. 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. 190