2010 Lexus HS 250h Owners Manual - Page 223

2-4. Using other driving systems l The vehicle speed deviates from the operating range of the LKA system func- tions. l When the lane lines cannot be recognized while driving. l Low speed or high speed wiper operation states. The buzzer may not beep when the LKA system functions are canceled because the notification of dynamic radar cruise control cancellation takes priority over the LKA system and cancels the function. l The no-handed driving warning activates while the lane keeping assist function is active. (The buzzer will beep twice.) n No-handed driving warning 2 If the steering wheel is not operated for about 15 seconds on a straight road or about 5 seconds on a curve, the buzzer will beep twice, indicators on the multiinformation display will flash, and the lane keeping assist function will be temporarily canceled. If you drive the vehicle with your hands lightly touching the steering wheel, this may also be detected as no-handed driving. n When the vehicle has been parked in the sun When driving The LKA system functions may not be available for a while after driving has started. In such cases, turn the LKA system off and turn it on again after normal temperature returns. When the temperature in the cabin decreases and the temperature around the camera sensor becomes suitable for its operation, the functions will begin to operate. n Warning lights and messages for LKA Warning lights and messages are used to indicate a system malfunction or to inform the driver of the need for caution while driving. (→P. 493, 505) 221