302 5-4 . Using the driving support systems
WARNING
● This system detects the condition of the driver through the operation of the steering wheel . This system may operate if the
driver is aware but intentionally and continuously does not operate the vehicle . Also , the system
may not operate if it cannot determine that the driver is not responsive , such as if they are
leaning on the steering wheel .
Summary of the system
Operation of this system is separated into 4 control states . Through control state “ warning phase 1 ” and “ warning phase 2 ”, the system determines if the driver is aware and responsive while outputting a warning and controlling the vehicle speed . If the system determines the driver is not responsive , it will operate in control state “ deceleration stop phase ” and “ stop hold phase ” and decelerate and stop the vehicle . It will then operate continuously in “ stop hold phase ”.
■ Operating conditions
This system operates when all of the following conditions are met :
●When the LTA is on
●When the vehicle speed is approximately 30 mph ( 50 km / h ) or more
■ Operation cancelation conditions
In the following situations , system operation will be canceled :
●When LTA control has been canceled ( the LTA switch has been pressed , etc .)
●When the dynamic radar cruise control has been canceled
●When driver operations are detected ( the steering wheel is
held , the brake pedal , accelerator pedal , parking brake , hazard light switch , or turn signal lever is operated )
●When the driving assist switch is pressed while in the stop and hold phase
●When the power switch has been turned from ON to OFF
●Situations in which some or all of the functions of the system cannot operate : �P . 266
■ LTA control when operation is canceled
When emergency driving stop system operation is canceled , LTA control may also be canceled .
Warning phase 1
If driving operations are not detected after the hands off steering wheel warning operates , a buzzer will sound intermittently and a message will be displayed to warn the driver , and the system will judge if the driver is responsive or not . If driving operations , such as holding the steering wheel , are not performed within a certain amount of time , the system will enter warning phase 2 .