2014 Lexus IS250 cruise control

192
IS350/250_U (OM53758U)4-5. Using the driving support systems
Use the cruise control to maintain a set speed without depressing the accelera-
tor pedal.
Indicators
Cruise control switch
Press the “ON/OFF” button to acti-
vate the cruise control.
Cruise control indicator will come on.
Press the button again to deactivate the
cruise control.
Accelerate or decelerate the vehicle
to the desired speed, and push the
lever down to set the speed.
“SET” indicator will come on.
The vehicle speed at the moment the
lever is released be comes the set speed.
Cruise control

: If equipped
Summary of functions
1
2
Setting the vehicle speed
1
2

1944-5. Using the driving support systems
IS350/250_U (OM53758U)
■Cruise control can be set when
●The shift lever is in D.
●Range 4 or higher of D has been se lected by using the paddle shift.
●Vehicle speed is above approximately 25 mph (40 km/h).
■Accelerating after setting the vehicle speed
●The vehicle can be accelerated normally. After acceleration, the set speed resumes.
●Even without canceling the cruise control, the set speed can be increased by first accel-
erating the vehicle to the desired speed and then pushing the lever down to set the new
speed.
■Automatic cruise control cancelation
Cruise control will stop maintaining the vehicl e speed in any of the following situations.
●Actual vehicle speed falls more than approximately 10 mph (16 km/h) below the preset
vehicle speed.
At this time, the memorized set speed is not retained.
●Actual vehicle speed is below approximately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
■If the warning message for the cruise contro l is shown on the multi-information display
Press the “ON/OFF” button once to deactivate the system, and then press the button
again to reactivate the system.
If the cruise control speed cannot be set or if the cruise control cancels immediately after
being activated, there may be a malfunction in the cruise control system. Have the vehi-
cle inspected by your Lexus dealer.

1954-5. Using the driving support systems
4
Driving
IS350/250_U (OM53758U)
CAUTION
■To avoid operating the cruise control by mistake
Switch the cruise control off using the “ON/OFF” button when not in use.
■Situations unsuitable for cruise control
Do not use cruise control in any of the following situations.
Doing so may result in loss of control and could cause an accident resulting in death or
serious injury.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as thos e covered with rain, ice or snow
●On steep hills
Vehicle speed may exceed the set speed when driving down a steep hill.
●During emergency towing

1964-5. Using the driving support systems
IS350/250_U (OM53758U)
Dynamic radar cruise control supplement s conventional cruise control with a
vehicle-to-vehicle distance control. In vehicle-to-vehicle distance control mode,
the vehicle automatically accelerates or de celerates in order to maintain a set
following distance from vehicles ahead.
Vehicle-to-vehicle distance button
Display
Set speed
Indicators
Cruise control switch
Dynamic radar cruise control

: If equipped
Summary of functions
1
2
3
4
5

1974-5. Using the driving support systems
4
Driving
IS350/250_U (OM53758U)
Press the “ON/OFF” button to acti-
vate the cruise control.
Dynamic radar cruise control indicator
will come on.
Press the button again to deactivate the
cruise control.
Accelerate or decelerate the vehicle
to the desired speed, and push the
lever down to set the speed.
“SET” indicator will be displayed.
The vehicle speed at the moment the
lever is released becomes the set speed.
Setting the vehicle speed (vehicle-to-vehicle distance control mode)
1
2

1994-5. Using the driving support systems
4
Driving
IS350/250_U (OM53758U)
Pressing the button changes the vehi-
cle-to-vehicle distance as follows:Long
Medium
Short
The vehicle-to-vehicle distance is set
automatically to long mode when the
engine switch is turned to IGNITION
ON mode.
If a vehicle is running ahead of you, the preceding vehicle mark will also be displayed.
Select a distance from the table below. Note that the distances shown corre-
spond to a vehicle speed of 50 mph (8 0 km/h). Vehicle-to-vehicle distance
increases/decreases in accordance with vehicle speed.
Pulling the lever toward you cancels
the cruise control.
The speed setting is also canceled when
the brakes are applied.
Pushing the lever up resumes the
cruise control and returns vehicle
speed to the set speed.
Resuming is available when the vehicle
speed is more than approximately 25
mph (40 km/h).
Changing the vehicle-to-vehicle distance
Preceding
vehicle mark
1
2
3
Vehicle-to-vehicle distance settings
Distance optionsVehicle-to-vehicle distance
LongApproximately 160 ft. (50 m)
MediumApproximately 130 ft. (40 m)
ShortApproximately 100 ft. (30 m)
Canceling and resuming the speed control
1
2

2014-5. Using the driving support systems
4
Driving
IS350/250_U (OM53758U)
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 ex ample of this would be if another driver
cuts in front of you while you are followi ng 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 po ssibility 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
When constant speed control mode is sele cted, your vehicle will maintain a set
speed without controlling the vehicle-to-vehicle distance. Select this mode only
when vehicle-to-vehicle distance contro l mode does not function correctly due
to dirt etc.
Press the “ON/OFF” button to acti-
vate the cruise control.
Press the button again to deactivate the
cruise control.
Switch to constant speed control
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 agai n 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. 1 9 3
Canceling and resuming the speed setting: P. 1 9 3
Approach warning
Selecting conventional constant speed control mode
1
2

2024-5. Using the driving support systems
IS350/250_U (OM53758U)
■Dynamic radar cruise control can be set when
●The shift lever is in D.
●Range 4 or higher of D has been se lected by using the paddle shift.
●Vehicle speed is above approximately 30 mph (50 km/h).
■Accelerating after setting the vehicle speed
The vehicle can accelerate normally. After acceleration, the set speed resumes. How-
ever, during vehicle-to-vehicle distance control mode, the vehicle speed may decrease
below the set speed in order to maintain the distance to the vehicle ahead.
■Automatic cancelation of vehicle-to-vehicle distance control
Vehicle-to-vehicle distance control driving is automatically canceled in the following situ-
ations:
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
●The sensor cannot operate correctly because it is covered in some way.
●The windshield wipers are operating at high speed (when the wipers are in AUTO
mode or the high speed wiper operation).
●When snow mode is set.
●Pre-collision braking is activated.
If vehicle-to-vehicle distance control driving is automatically canceled for any other rea-
son, there may be a malfunction in the system. Contact your Lexus dealer.
■Automatic cancelation of constant speed control
The cruise control will stop maintaining the vehicle speed in the following situations:
●Actual vehicle speed is more than approximately 10 mph (16 km/h) below the set vehi-
cle speed.
At this time, the memorized set speed is not retained.
●Vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
●Pre-collision braking is activated.