2009 Lexus GS 450h Owners Manual - Page 255

2-4. Using other driving systems CAUTION n When the radar sensor may not be correctly detecting the vehicle ahead Apply the brakes as necessary when any of the following types of vehicles are in front of you. As the sensor may not be able to correctly detect these types of vehicles, the proximity alarm (→P. 528) will not be activated, and a serious or fatal accident may result. l Vehicles that cut in suddenly l Vehicles traveling at low speeds l Vehicles that are not moving l Vehicles with small rear ends (trailers with no load on board etc.) l Motorcycles traveling in the same lane n Conditions under which the vehicle-to-vehicle distance control may not function 2 When driving correctly Apply the brakes as necessary in the following conditions as the radar sensor may not be able to correctly detect vehicles ahead, and a serious or fatal accident may result. l When water or snow thrown up by the surrounding vehicles hinders the function- ing of the sensor l When your vehicle is pointing upwards (caused by a heavy load in the trunk, etc.) l When the road curves or when the lanes are narrow l When steering wheel operation or your position in the lane is unstable l When the vehicle ahead of you decelerates suddenly 193 GS_HV_U (OM30B44U) March 8, 2010 10:03 am