
2384-5. Using the driving support systems
IS200t_EE(OM53D19E)
●When the engine automatically restarts while stopped by the Stop & Start system
■Stop & Start system warning messages
If a system malfunction occurs, a warning message will be displayed on the multi-infor-
mation display to inform the driver of the need for caution. ( →P. 5 1 2 )
■If the Stop & Start cancel indicator continues to flash
The system may be malfunctioning. Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional. “Non-Dedicated
Battery.”
A non-dedicated battery for the Stop & Start sys-
tem may have been installed.
The Stop & Start system does not operate. Have
the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
MessageDetails
MessageDetails
“For Climate Con-
trol.”
• The air conditioning system has been turned on or is being used.
• has been turned on.
“For Brake System.”
The brake pedal has been depressed further or
pumped. The system will be enabled after the engine runs
and the brake booster vacuum reaches a prede-
termined level.
“Battery Charging.”
The battery charge amount may be low. The engine is restarted to prioritize battery
charging. Operating the engine for a short while
allows the system to recover.
“Steering Wheel
Tu r n e d . ”
The steering wheel was operated.
“Driver Seat Belt
Unbuckled.”
The driver seat belt has been unfastened.

2634-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D19E)
■Temporary cancelation of the LDA system functions
If any of the following occurs, the LDA system functions will be temporarily canceled. The
functions will resume after the necessary operating conditions have returned.
●The turn signal lever is operated.
●The vehicle speed deviates from the operating range of the LDA system functions.
●When the lane lines cannot be recognized while driving.
●When the lane departure warning sounds.
The lane departure warning function will not operate again for a several seconds after it
has been activated, even if the vehicle leaves the lane again.
■The lane departure warning
Depending on the audio system sound level or air conditioning fan noise while the audio
system or air conditioning system is in use, it may be difficult to hear the warning sound.
■After the vehicle has been parked in the sun
The LDA system may not be available and a warning message ( →P. 511) will be displayed
for a while after driving has started. When the temperature in the cabin decreases and
the temperature around the camera sensor ( →P. 260) becomes suitable for its opera-
tion, the functions will begin to operate.
■If there are lane markers on only one side of the vehicle
The lane departure warning will not operate fo r the side on which lane markers could not
be recognized.
■Conditions in which the function may not operate correctly
In the following situations, the camera sensor may be unable to recognize lane markers
causing the lane departure warning function to operate incorrectly. However, this does
not indicate a malfunction.
●When driving through an area with no lane markers, such as a tollbooth, a crossing or
before a ticket checkpoint
●When driving on a sharp curve
●When lane markers are extremely narrow or extremely wide
●When the vehicle leans to one side an unusual amount due to a heavy load or improper
tire inflation pressure
●When the following distance between your vehicle and the vehicle ahead is extremely
short
●When the lane markers are yellow (These may be more difficult for the system to rec-
ognize compared to white markers.)
●When the lane markers are broken, Botts’ dots (raised pavement markers) or stones
●When the lane markers are on a curb etc.
●When lane markers are obscured or partially obscured by sand, dirt, etc.
●When there are shadows on the road running parallel with lane markers, or if a shadow
covers the lane markers
●When driving on a particularly brig ht road surface, such as concrete
●When driving on a road surface that is bright due to reflected light
●When driving in a location where the light level changes rapidly, such as the entrance to
or exit from a tunnel

2714-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D19E)
■Sensor detection information
●The sensor’s detection areas are limited to the areas around the vehicle’s front corner
and rear bumpers.
●Certain vehicle conditions and the surrounding environment may affect the ability of
the sensor to correctly detect obstacles. Particular instances where this may occur are
listed below.
• There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve this prob- lem.)
• The sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen the screen may show an abnormal
display, or obstacles may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass.
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle engines, air
brakes of large vehicles, or other loud noises producing ultrasonic waves.
• There is another vehicle equipped with parking assist sensors in the vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna.
• Towing eyelets are installed.
• The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather.
• The area directly under the bumpers is not detected.
• If obstacles draw too close to the sensor.
• A non-genuine Lexus suspension (low ered suspension etc.) is installed.
• People may not be detected if they are wearing certain types of clothing.
In addition to the examples above, there are instances in which, because of their shape,
signs and other objects may be judged by the sensor to be closer than they are.
●The shape of the obstacle may prevent the sensor from detecting it. Pay particular
attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your vehi- cle
●The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection distancemay shorten, or detection may be impossible.
• Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between obst acle detection and display. Even at slow
speeds, there is a possibility that the obstacl e will come within the sensor’s detection
areas before the display is shown and the warning beep sounds.
• Thin posts or objects lower than the sensor may not be detected when approached, even if they have been detected once.
• It might be difficult to hear beeps due to the volume of the audio system or air flow noise of the air conditioning system.
■If a message is displayed on the multi-information display
→ P. 5 0 8

2844-5. Using the driving support systems
IS200t_EE(OM53D19E)
■Operation of the air conditioning system in Eco drive mode
Eco drive mode controls the heating/cooling operations and fan speed of the air condi-
tioning system to enhance fuel efficiency ( →P. 398). To improve air conditioning perfor-
mance, adjust the fan speed or turn off Eco drive mode.
■Sport mode automatic deactivation
Sport mode is automatically deactivated if the engine switch is turned off after driving in
sport mode.

3155-1. Basic Operations
5
Lexus Display Audio system
IS200t_EE(OM53D19E)
■“MENU” screen
To display the “MENU” screen, press the button on the controller unit.
ButtonFunction
“A u d i o ”Display the audio top screen
( → P. 338, 340, 347, 350, 355, 364)
“Climate”Automatic air conditioning system ( →P. 3 9 8 )
“Telephone”Display the phone top screen ( →P. 3 6 6 )
“Car” Consumption information ( →P. 1 0 9 )
“Info”Display the “Information” screen ( →P. 3 8 9 )
“Setup”Setup menu ( →P. 323)
“Display”Display settings ( →P. 3 2 8 )

384
IS200t_EE(OM53D19E)5-11. Bluetooth
®
■When using the Bluetooth® audio system
●In the following situations, the system may not function.
• If the portable audio player is turned off
• If the portable audio player is not connected
• If the portable audio player’s battery is low
●There may be a delay if a cellular phone connection is made during Bluetooth® audio
play.
●Depending on the type of portable audio player that is connected to the system, opera-
tion may differ slightly and cert ain functions may not be available.
■When using the hands-free system
●The audio system is muted when making a call.
●If both parties speak at the same time, it may be difficult to hear.
●If the received call volume is overly loud, an echo may be heard.
If the Bluetooth® phone is too close to the system, quality of the sound may deteriorate
and connection status may deteriorate.
●In the following situations, it may be difficult to hear the other party:
• When driving on unpaved roads
• When driving at high speeds
•If a window is open
• If the air conditioning is blowing directly on the microphone
• If there is interference from the network of the cellular phone
■Conditions under which th e system will not operate
●If using a cellular phone that does not support Bluetooth®
●If the cellular phone is turned off
●If you are outside of cellular phone service coverage
●If the cellular phone is not connected
●If the cellular phone’s battery is low
●When outgoing calls are controlled, due to heavy traffic on telephone lines, etc.
●When the cellular phone itself cannot be used
●When transferring phonebook data from the cellular phone
Bluetooth®

397
6Interior features
IS200t_EE(OM53D19E)
6-1. Using the air conditioning system
Automatic air conditioning system ......................................... 398
Heated steering wheel/ seat heaters/
seat ventilators ........................ 409
6-2. Using the interior lights Interior lights list.............................411• Interior lights ........................... 412
• Personal lights......................... 412
6-3. Using the storage features
List of storage features.............. 414
• Glove box................................. 415
• Console box ............................ 415
•Cup holders/Bottle holders ......................... 416
Trunk features ............................... 418 6-4. Using the other interior
features
Other interior features ..............421 • Sun visors ..................................421
• Vanity mirrors ..........................421
• Clock ..........................................421
• Power outlet ........................... 422
• Armrest.................................... 423
• Rear sunshade....................... 423
• Assist grips.............................. 425
• Coat hooks ............................. 425

398
IS200t_EE(OM53D19E)6-1. Using the air conditioning system
Automatic air conditioning system
Air outlets and fan speed are automatically adjusted according to the temper-
ature setting.
Vehicles with a Lexus Display Audio system: Press the “MENU” button on the
Lexus Display Audio controller, then select “Climate” to display the air condi-
tioning operation screen.
For details on the Lexus Display Audio controller, refer to “Lexus Display
Audio controller” on P. 316.
Vehicles with a navigation system:
Press the “MENU” button on the Remote
Touch, then select “Climate” to display the air conditioning control screen.
For details on the Remote Touch, refer to the “NAVIGATION AND MULTI-
MEDIA SYSTEM OWNER’S MANUAL”.
The illustrations below are for left-hand drive vehicles.
The button positions and shapes will di ffer for right-hand drive vehicles.
Also, the display and button positions will differ depending on the type of the
system.