2005 Lexus RX 330 Owners Manual - Page 452

STARTING AND DRIVING CAUTION Do not rely excessively on dynamic laser cruise control. Observe the following precautions in order to avoid serious injury or death: 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 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 cruise control turns off. On roads with heavy traffic or sharp bends, an appropriate speed cannot be maintained and an accident may occur. On slippery road surfaces (icy or snow−covered road surfaces), the tires will race and you will be unable to control the vehicle. When there is no vehicle detected ahead on steep downhill slopes, the preset speed will be easily exceeded because of inefficient engine braking. (In this case, automatic braking will not work.) If there is a vehicle detected ahead, the delay in deceleration timing could cause serious injury or death. When the alarm sounds frequently (because acceleration or deceleration was repeated or sufficient vehicle−to−vehicle distance was not maintained), an appropriate vehicle speed cannot be attained and an accident may occur. On roads with steep and short inclines and declines, failure to detect the vehicle ahead will shorten the distance between your vehicle and the vehicle ahead and an accident may occur. 421