2007 Toyota Avalon Owners Manual - Page 198

'06 AVALON_U (L/O 0508) This system operates by detecting primarily the reflectors of the vehicle ahead. The distance may not be accurately or absolutely detected in the following cases: CAUTION To avoid accidents, always keep the laser radar sensor glass clean and never allow it to be covered with icicle or any substance, so it can detect the vehicle in front. (See "LASER RADAR SENSOR" on page 189.) CAUTION Do not rely excessively on dynamic laser cruise control. Observe the following precautions in order to avoid serious injury or death: D The vehicle ahead has higher ground clearance, which means that the placement of the reflectors is in a higher position. D Under certain conditions where the vehicle in front slows drastically, or is stopped, the dynamic laser cruise control will neither warn you nor decelerate. You must depress the brake pedal to slow down, ensuring collision avoidance or that sufficient vehicle−to−vehicle distance is maintained. D The rear section of the vehicle ahead is extremely dirty. D The vehicle ahead or other vehicles around you are flinging up water or snow. D Excessive exhaust gas (black smoke) is coming from the vehicle ahead or other vehicles around you, obscuring your front view. D Do not use dynamic laser cruise control in the following conditions: In bad weather (such as rain, fog, snow, sandstorms or direct sunlight, or when raindrops or snowflakes get on the laser radar sensor glass), the vehicle−to−vehicle distance will not be measured accurately. When using the windshield wipers at high or low speeds the dynamic laser radar cruise control turns off. D There is an obstruction (protective film, sticker, etc.) on the reflectors on the vehicle ahead, or reflectors are not installed on the vehicle ahead or are damaged. D Heavy luggage in the luggage compartment or rear seats is causing the nose of your vehicle to tilt up. 182