2006 Lexus RX 330 Owners Manual - Page 446

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 when the vehicle in front slows abruptly, or is stopped, the dynamic laser cruise control may be unable to decelerate automatically or to warn you. You must apply the brakes manually in order to maintain a safe vehicle−to−vehicle distance or avoid collision. Therefore, pay careful attention to following distance, even when using the dynamic laser cruise control. 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 of frequent changes of speed or insufficient vehicle−to−vehicle distance), this indicates that the system cannot maintain an appropriate vehicle−to−vehicle distance 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