2005 Lexus LS 430 Owners Manual - Page 375

STARTING AND DRIVING Dynamic radar cruise control- D The millimeter wave radar sensor automatically detects dirt if it is sticking to the front of the sensor or grille cover of your vehicle, and if detected, a message is shown on the multi−information display. However, if the sensor or grille cover is covered with a metallic vinyl bag, icicle, snowflakes, etc., dirt may not be detected, resulting in improper vehicle−to−vehicle distance. Continue driving with due care to the vehicle ahead. If dirt is detected, the dynamic radar cruise control function is automatically cancelled. Always keep the sensor and grille cover clean. CAUTION Certain conditions make vehicle detection difficult or impossible. D As this system operates by detecting primarily the reflected wave from the rear end of the vehicle ahead, the distance cannot be accurately detected in the following cases, resulting in improper vehicle−to−vehicle distance. D The rear section of the vehicle ahead is extremely small such as an unloaded trailer. D The vehicle ahead or other vehicles around you are flinging up water or snow. D Heavy luggage which is loaded in your trunk or on top of your rear seats is raising up the nose of your vehicle. 336