Page 243 of 628
2434-3. Operating the lights and wipers
4
Driving
IS300h_EE(OM53D56E)
Wiper intervals can be adjusted when intermittent operation is selected.Increases the intermittent wind-
shield wiper frequency
Decreases the intermittent wind-
shield wiper frequency
The intermittent windshield wiper
operates more frequently as vehicle
speed becomes higher.
Washer/wiper dual operation
The wipers will automatically operate
a couple of times after the washer
squirts.
When the power switch is in ON
mode and the headlights are on, if the
lever is pulled, the headlight cleaners
will operate once. After this, the
headlight cleaners will operate every
5th time the lever is pulled.
5
6
7
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2454-3. Operating the lights and wipers
4
Driving
IS300h_EE(OM53D56E)
CAUTION
■Caution regarding the use of windshield wipers in AUTO mode
The windshield wipers may operate unexpectedly if the sensor is touched or the wind-
shield is subject to vibration in AUTO mode. Take care that your fingers or anything
else do not become caught in the windshield wipers.
■Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshield becomes warm. The
fluid may freeze on the windshield and cause low visibility. This may lead to an accident,
resulting in death or serious injury.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled toward you and
held continually.
■When a nozzle becomes blocked
In this case, contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Do not try to clear it with a pin or other object. The nozzle will be damaged.
Page 256 of 628
2564-5. Using the driving support systems
IS300h_EE(OM53D56E)
Press the “ON/OFF” button to acti-
vate the cruise control.
Radar cruise control indicator will come
on and a message will be displayed on
the multi-information display.
Press the button again to deactivate the
cruise control.
Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (above
approximately 50 km/h [30 mph])
and push the lever down to set the
speed.
Cruise control “SET” indicator and set
speed 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
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2574-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D56E)
To change the set speed, operate the lever until the desired set speed is dis-
played.Increases the speed
Decreases the speed
Fine adjustment: Momentarily move
the lever in the desired direction.
Large adjustment: Hold the lever in the
desired direction.
In the vehicle-to-vehicle distance control mode, the set speed will be increased
or decreased as follows: • When the set speed is shown in “MPH”
Fine adjustment: By approximately 8 km/h (5 mph) each time the lever is operated
Large adjustment: By approximately 8 km/h (5 mph) for each 0.3 seconds the lever is
held
• When the set speed is shown in “km/h”
Fine adjustment: By approximately 5 km/h (3.1 mph) each time the lever is operated
Large adjustment: By approximately 5 km/h (3.1 mph) for each 0.3 seconds the lever
is held
In the constant speed control mode ( →P. 260), the set speed will be increased
or decreased as follows:
Fine adjustment: By approximately 5 km/h or 5 mph each time the lever is operated
Large adjustment: The set speed can be incr eased or decreased continually until the
lever is released.
Adjusting the set speed
1
2
Page 260 of 628

2604-5. Using the driving support systems
IS300h_EE(OM53D56E)
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-
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 1 second.)
Cruise control 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 power switch is turned off and then turned to ON mode again, the vehicle will
automatically return to vehicle-to-vehicle distance control mode.
Adjusting the speed setting: →P. 2 5 1
Canceling and resuming the speed setting: →P. 2 5 1
Selecting constant speed control mode
1
2
Page 262 of 628
2624-5. Using the driving support systems
IS300h_EE(OM53D56E)
■Radar sensor and grille cover
Always keep the sensor and grille cover clean to ensure that the vehicle-to-vehicle dis-
tance control mode operates properly. (Some obstructions, such as snow, ice and plastic
objects, cannot be detected by the obstruction sensor.)
Dynamic radar cruise control is canceled if an obstruction is detected.
■Operation guide display
When the dynamic radar cruise control switch is operated, a guidance display is shown
on the meters for a few seconds as to how to operate the dynamic radar cruise control
switch or distance switch. ( →P. 1 1 8 )
■Warning messages and buzzers for dynamic radar cruise control
Warning messages and buzzers are used to in dicate a system malfunction or to inform
the driver of the need for caution while driving. ( →P. 5 3 2 )
Grille cover
Radar sensor
1
2
Page 293 of 628