Approach Warning - Lexus IS250 U Owner's Manual

Approach warning

When your vehicle is too close to a vehicle ahead, and sufficient automatic
deceleration via the cruise control is not possible, the display will flash and the
buzzer will sound to alert the driver. An example of this would be if another driver
cuts in front of you while you are following a vehicle. Apply the brakes to ensure
an appropriate vehicle-to-vehicle distance.
Warnings may not occur when
■
In the following instances, there is a possibility that the warnings will not occur:
When the speed of the vehicle ahead matches or exceeds your vehicle
●
speed
When the vehicle ahead is traveling at an extremely slow speed
●
Immediately after the cruise control speed was set
●
At the instant the accelerator is applied
●
Selecting conventional constant speed control mode
When constant speed control mode is selected, your vehicle will maintain a set
speed without controlling the vehicle-to-vehicle distance. Select this mode only
when vehicle-to-vehicle distance control mode does not function correctly due
to dirt etc.
Press the "ON/OFF" button to acti-
1
vate the cruise control.
Press the button again to deactivate the
cruise control.
Switch to constant speed control
2
mode.
(Push the lever forward and hold for
approximately one second.)
Constant speed control mode indicator will come on.
When in constant speed control mode, to return to vehicle-to-vehicle distance con-
trol mode, push the lever forward again and hold for approximately 1 second.
After the desired speed has been set, it is not possible to return to vehicle-to-vehicle
distance control mode.
If the engine switch is turned off and then turned to IGNITION ON mode again, the
vehicle will automatically return to vehicle-to-vehicle distance control mode.
Adjusting the speed setting: P. 193
Canceling and resuming the speed setting: P. 193
IS350/250_U (OM53C50U)
4-5. Using the driving support systems
201
4