Page 354 of 440

3527-2. Steps to take in an emergency
1Locks all the doors
2 Unlocks the door
Turning the key rearward unlocks the
driver’s door. Turning the key once again
within 5 seconds unlocks the other doors.
■Trunk
Turn the mechanical key clockwise to
open. ( P.61)
■Key linked functions
1 Closes the windows and moon roof
(turn and hold)
*
2Opens the windows and moon roof
(turn and hold)
*
*
: This setting must be customized at your Lexus dealer.
1
Ensure that the shift lever is in P and
depress the brake pedal.
2 Touch the Lexus emblem side of the
electronic key to the engine switch.
When the electronic key is detected, a
buzzer sounds and the engine switch will
turn to IGNITION ON mode.
When the smart access system with
push-button start is deactivated in
customization setting, the engine switch
will turn to ACCESSORY mode.
3 Firmly depress the brake pedal and
check that is shown on the
multi-information display.
4 Press the engine switch.
In the event that the engine still cannot
WARNING
■When using the mechanical key and
operating the power windows or
moon roof
Operate the power window or moon
roof after checking to make sure that
there is no possibility of any passenger
having any of their body parts caught in
the window or moon roof.
Also, do not allow children to operate the
mechanical key. It is possible for children
and other passengers to get caught in
the power window or moon roof.
Starting the engine
Page 359 of 440

3577-2. Steps to take in an emergency
7
When trouble arises
1Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the engine.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the engine has cooled down
sufficiently, inspect the hoses and
radiator core (radiator) for any
leaks.
WARNING
●When working with the battery, always
wear safety glasses and take care not
to allow any battery fluids (acid) to
come into contact with skin, clothing
or the vehicle body.
●Do not lean over the battery.
●In the event that battery fluid comes
into contact with the skin or eyes,
immediately wash the affected area
with water and seek medical attention.
Place a wet sponge or cloth over the
affected area until medical attention
can be received.
●Always wash your hands after handling
the battery support, terminals, and
other battery-related parts.
●Do not allow children near the battery.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entan-
gled in the cooling fans or engine drive
belt.
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
The needle of the engine coolant
temperature gauge ( P.69)
enters the red zone or a loss of
engine power is experienced.
(For example, the vehicle speed
does not increase.)
“Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the
multi-information display.
Steam comes out from under the
hood.
Correction procedures
Page 362 of 440

3607-2. Steps to take in an emergency
multi-information display.
If the message does not disappear:
Stop the engine and contact your
Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Lexus dealer.
WARNING
■When inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious
injury such as burns.
●If steam is seen coming from under the
hood, do not open the hood until the
steam has subsided. The engine com-
partment may be very hot.
●Keep hands and clothing (especially a
tie, a scarf or a muffler) away from the
fans and belts.
Failure to do so may cause the hands
or clothing to be caught, resulting in
serious injury.
●IS350 AWD/IS350/IS300 AWD:
Do not loosen the coolant inlet cap or
coolant reservoir cap while the engine
and radiator are hot. (The coolant inlet
cap is located under the engine cover.)
High temperature steam or coolant
could spray out.
●IS300: Do not loosen the coolant inlet
cap, coolant reservoir cap, or inter-
cooler reservoir cap while the engine
and radiator are hot. High tempera-
ture steam or coolant could spray out.
●IS500: Do not loosen the coolant inlet
cap or coolant reservoir cap while the
engine and radiator are hot. High tem-
perature steam or coolant could spray
out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has
cooled down sufficiently. Adding cool
coolant to a hot engine too quickly can
cause damage to the engine.
■To prevent damage to the cooling sys-
tem
Observe the following precautions:
●Avoid contaminating the coolant with
foreign matter (such as sand or dust
etc.).
Page 390 of 440

3888-2. Customization
8-2.Customization
■Changing by using the meter con-
trol switches
1 Press or to select .
2 Operate the switches to select a
desired item.
3 Change the setting by referring to
the message displayed on the
screen.
■Changing by using the Remote
Touch
1 Press the “MENU” button on the
Remote Touch.
2 Select “Setup” on the menu screen
and select “Vehicle”.
3 Select “Vehicle Customization” or
“Drive Mode Customization”.
Various setting can be changed. Refer to
the list of settings that can be changed for
details.
This system can also be operated by the
touch screen.
For details on the Remote Touch, refer
to the “NAVIGATION AND MULTI-
MEDIA SYSTEM OWNER’S MAN-
UAL”.
■When customizing using the Remote
Touch
Stop the vehicle in a safe place, apply the
parking brake, and shift the shift lever to P.
Also, to prevent battery discharge, leave
the engine running while customizing the
features.
Some function settings are changed simultaneously with other functions being cus-
tomized. Contact your Lexus dealer for further details.
Settings that can be changed using the Remote Touch
Settings that can be changed using the meter control switches
Settings that can be changed by your Lexus dealer
Customizable features
Your vehicle includes a variety of
electronic features that can be per-
sonalized to suit your preferences.
The settings of these features can
be changed by using the meter con-
trol switches, the Remote Touch, or
at your Lexus dealer.
Customizing vehicle features
WARNING
■During customization
As the engine needs to be running
during customization, ensure that the
vehicle is parked in a place with ade-
quate ventilation. In a closed area such as
a garage, exhaust gases including harm-
ful carbon monoxide (CO) may collect
and enter the vehicle. This may lead to
death or a serious health hazard.
NOTICE
■During customization
To prevent battery discharge, ensure that
the engine is running while customizing
features.
Customizable features
A
B
C
Page 391 of 440
3898-2. Customization
8
Vehicle specifications
Definition of symbols: O = Available, — = Not available
■Gauges, meters and multi-information display ( P.64, 69, 75)
Function*1Default settingCustomized setting
LanguageEnglishFrenchOO—Spanish
Units*2miles (MPG US)
miles (MPG Impe-
rial)
OO—km (L/100 km)
km (km/L)
Eco Driving Indicator LightOnOff—O—
Switch settings*3Drive information 1Desired status
screen
*4—O—
Drive information 1
Current fuel con- sumption
Customizable items: P.78
—O—Average fuel econ-omy (after reset)
Drive information 2
Distance (driving range)
—O—Average vehicle
speed (after reset)
Drive information 3*3
Average fuel con- sumption (after refuel)
—O—
Elapsed time (after start)
Pop-up displayOnOff—O—
ColorColor 1Color 2OO—
Rev indicator*55000 rpm
2000 - 6800
rpm
*6
2000 - 6100 rpm*7
2000 - 7300 rpm
*8
—O—
Off
ABC
Page 392 of 440
3908-2. Customization
*1: For details about each function: P.81
*2: The default setting varies according to country.
*3:Except F SPORT models
*4: Some status screens cannot be registered (i ndicated on the multi-information display)
*5: F SPORT models
*6: IS350 AWD/IS350/IS300 AWD
*7:IS300
*8:IS500
■Door lock (P.90, 94, 351)
Rev peak*5OnOff—O—
Rear seat reminder functionOnOff—O—
FunctionDefault settingCustomized setting
Unlocking using a mechani-
cal key
Driver’s door
unlocked in one step, all doors
unlocked in two steps
All doors unlocked in one step——O
Automatic door lock
Shifting the shift
lever to position other than P
Off
O—OVehicle speed is
approximately 12
mph (20 km/h) or
higher
Automatic door unlockShifting the shift lever to POff
O—ODriver’s door is opened
Locking/unlocking of the
trunk when all doors are
locked/unlocked
OnOff——O
Function*1Default settingCustomized settingABC
ABC
Page 396 of 440

3948-2. Customization
■Lights (P.145)
*: U.S.A. only
■PCS (Pre-Collision System) ( P.165)
*: The system is automatically enabled each time the engine switch is turned to IGNITION
ON mode.
■LTA (Lane Tracing Assist) ( P.175)
■RSA (Road Sign Assist)* ( P.184)
*:If equipped
FunctionDefault settingCustomized setting
Daytime running lights*OnOffO—O
FunctionCustomized setting
PCS (Pre-Collision System)*On, Off—O—
Adjust alert timingEarly, Middle, Late—O—
FunctionCustomized setting
Lane centering functionOn, Off—O—
Alert typeSteering wheel vibration,
Buzzer—O—
Alert sensitivityHigh, Standard—O—
Vehicle sway warning functionOn, Off—O—
Vehicle sway warning sensitivityHigh, Standard, Low—O—
FunctionCustomized setting
RSA (Road Sign Assist)On, Off—O—
Excess speed notification
methodDisplay only, Display and buzzer, No notifi- cation—O—
Excess speed notification
level1 mph (2 km/h), 3 mph (5 km/h), 5 mph (10 km/h)—O—
Other notifications method
(No-entry notification)Display only, Display and buzzer, No notifi- cation—O—
ABC
ABC
ABC
ABC
Page 416 of 440
414What to do if... (Troubleshooting)
tion display. (P.338)
When a warning light turns on or a
warning message is displayed, refer
to P.329, 338.
Stop the vehicle in a safe place and
replace the flat tire with the spare
tire. ( P.341)
Try the procedure for when the vehi-
cle becomes stuck in mud, dirt, or
snow. ( P.361)
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck