2013 Lexus IS300h cruise control

2204-2. Driving procedures
IS300h_EE(OM53B95E)
When the “-” paddle shift switch is operated with the shift lever in the D position
The shift range is downshifted to a range that enables engine braking force that is
suitable to driving conditions.
Automatic deactivation of shift range selection in the D position
Shift range selection in the D position will be deactivated in the following situa-
tions:
When the vehicle comes to a stop
If the accelerator pedal is depressed for more than a certain period of time
When the shift lever is shifted to a position other than D
Downshifting restriction warning buzzer
To help ensure safety and driving performance, downshifting operation may
sometimes be restricted. In some circumstances, downshifting may not be possi-
ble even when the shift lever or paddle shift switch is operated. (A buzzer will
sound twice.)
Snow mode automatic deactivation
Snow mode is automatically deactivated if the power switch is turned off after
driving in snow mode.
When driving with cruise control or dynamic radar cruise control activated
Even when performing the following actions with the intent of enabling engine
braking, engine braking will not activate because cruise control or dynamic radar
cruise control will not be canceled.
While driving in D or S mode, downshifting to 5 or 4. (P. 245, 249)
When switching the driving mode to sport mode while driving in D position.
(P. 283)
If the shift lever cannot be shifted from P
P. 547

245
4
Driving
IS300h_EE(OM53B95E)4-5. Using the driving support systems
Use the cruise control to maintain a set speed without depressing the
accelerator pedal.
Indicators
Cruise control switch
Press the “ON/OFF” button to
activate the cruise control.
Cruise control indicator will come
on.
Press the button again to deactivate
the cruise control.
Accelerate or decelerate the vehi-
cle 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 becomes the set
speed.
Cruise control

: If equipped
Summary of functions
1
2
Setting the vehicle speed
1
2

2474-5. Using the driving support systems
4
Driving
IS300h_EE(OM53B95E)
Cruise control can be set when
The shift lever is in D or range 4 or higher of S has been selected.
Range 4 or higher of D has been selected by using the paddle shift.
Vehicle speed is above approximately 40 km/h (25 mph).
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 accelerating 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 vehicle speed in any of the following sit-
uations.
Actual vehicle speed falls more than approximately 16 km/h (10 mph) below
the preset vehicle speed.
At this time, the memorized set speed is not retained.
Actual vehicle speed is below approximately 40 km/h (25 mph).
VSC is activated.
TRC is activated for a period of time.
When the VSC or TRC system is turned off by pressing the VSC OFF switch.
If the warning message for the cruise control is shown on the multi-information
display
Press the “ON/OFF” button once to deactivate the system, and then press the but-
ton again to reactivate the system.
If the cruise control speed cannot be set or if the cruise control cancels immedi-
ately after being activated, there may be a malfunction in the cruise control sys-
tem. Have the vehicle inspected by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.

2484-5. Using the driving support systems
IS300h_EE(OM53B95E)
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 those covered with rain, ice or snow
On steep hills
Vehicle speed may exceed the set speed when driving down a steep hill.
When your vehicle is towing a trailer or during emergency towing

2494-5. Using the driving support systems
4
Driving
IS300h_EE(OM53B95E)
Dynamic radar cruise control supplements conventional cruise control
with a vehicle-to-vehicle distance control. In vehicle-to-vehicle distance
control mode, the vehicle automatically accelerates or decelerates in
order to maintain a set following distance from vehicles ahead.
Vehicle-to-vehicle distance but-
ton
Display
Set speed
Indicators
Cruise control switch
Dynamic radar cruise control

: If equipped
Summary of functions
1
2
3
4
5

2504-5. Using the driving support systems
IS300h_EE(OM53B95E)
Press the “ON/OFF” button to
activate the cruise control.
Dynamic radar cruise control indica-
tor will come on.
Press the button again to deactivate
the cruise control.
Accelerate or decelerate the vehi-
cle 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

2524-5. Using the driving support systems
IS300h_EE(OM53B95E)
Pressing the button changes the
vehicle-to-vehicle distance as fol-
lows:
Long
Medium
Short
The vehicle-to-vehicle distance is set
automatically to long mode when the
power switch is turned to 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 cor-
respond to a vehicle speed of 80 km/h (50 mph). Vehicle-to-vehicle dis-
tance increases/decreases in accordance with vehicle speed.
Pulling the lever toward you can-
cels 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 approxi-
mately 40 km/h (25 mph).
Changing the vehicle-to-vehicle distance
Preceding
vehicle
1
2
3
Vehicle-to-vehicle distance settings
Distance optionsVehicle-to-vehicle distance
LongApproximately 50 m (160 ft.)
MediumApproximately 40 m (130 ft.)
ShortApproximately 30 m (100 ft.)
Canceling and resuming the speed control
1
2

2544-5. Using the driving support systems
IS300h_EE(OM53B95E)The system accelerates until the set speed is reached. The system then returns
to constant speed cruising.
When your vehicle is too close to a vehicle ahead, and sufficient auto-
matic 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 dis-
tance.
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 vehi-
cle 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 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 func-
tion correctly due to dirt etc.
Press the “ON/OFF” button to
activate 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 1 second.)
Constant speed control mode indicator will come on.
When in constant speed control mode, to return to vehicle-to-vehicle distance
control mode, push the lever forward again and hold for approximately 1 sec-
ond.
After the desired speed has been set, it is not possible to return to vehicle-to-
vehicle distance control mode.
Approach warning
Selecting conventional constant speed control mode
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2