Page 572 of 628
5588-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
After the hybrid system has
cooled down, inspect the hoses
and radiator core (radiator) for
any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact any
authorized Lexus dealer or
repairer, or another duly quali-
fied and equipped professional.
The coolant level is satisfac-
tory if it is between the “F”
and “L” lines on the reservoir.
Reservoir
“F”
“L”
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and check for the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
If the message is not displayed:
Have the vehicle inspected at the nearest authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
3
1
2
4
1
2
3
5
6
Page 581 of 628

5669-1. Specifications
IS300h_EE(OM53B95E)
Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows
cold startability. Oils with a lower value before the W allow for eas-
ier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the oil
when the oil is at high temperature. An oil with a higher viscosity
(one with a higher value) may be better suited if the vehicle is oper-
ated at high speeds, or under extreme load conditions.
How to read oil container labels:
Either or both API registered marks are added to some oil containers to
help you select the oil you should use.
API Service Symbol
Top portion: “API SERVICE SN”
means the oil quality designation
by American Petroleum Institute
(API).
Center portion: “SAE 0W-20”
means the SAE viscosity grade.
Lower portion: “Resource-
Conserving” means that the oil
has fuel-saving and environmen-
tal protection capabilities.
ILSAC Certification Mark
The International Lubricant Specification Advisory Committee (ILSAC)
Certification Mark is displayed on the front of the container.
1
2
Page 590 of 628

575
IS300h_EE(OM53B95E)
9
Vehicle specifications
9-2. Customization
Changing by using the Remote Touch or Lexus Display Audio control-
ler (if equipped)
Vehicles with a Remote Touch
Press the “MENU” button on the Remote Touch.
Select “Setup” on the “Menu” screen and select “Vehicle”.
Various setting can be changed. Refer to the list of settings that can be
changed for details.
Vehicles with a Lexus Display Audio controller
Press the “MENU” button on the Lexus Display Audio controller.
Select “Setup” on the “MENU” screen and select “Vehicle”.
Various setting can be changed. Refer to the list of settings that can be
changed for details.
Changing by using the meter control switches
P. 1 1 7
Customizable features
Your vehicle includes a variety of electronic features that can be person-
alized to your preferences. The settings of these features can be changed
by using the meter control switches, the Remote Touch or Lexus Display
Audio controller or at any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
Customizing vehicle features
1
2
1
2
Page 591 of 628

5769-2. Customization
IS300h_EE(OM53B95E)
Some function settings are changed simultaneously with other functions
being customized. Contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Vehicles with a Remote Touch or Lexus Display Audio controller: Set-
tings that can be changed using the Remote Touch or Lexus Display
Audio controller
Vehicles with a Remote Touch or Lexus Display Audio controller: Set-
tings that can be changed using the meter control switches
Vehicles without a Remote Touch or Lexus Display Audio controller:
Settings that can be changed using the meter control switches
Settings that can be changed by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
Definition of symbols: O = Available, — = Not available
Gauges, meters and multi-information display (P. 104, 110, 116)
Customizable features
1
2
3
4
Function*1Default set-
tingCustomized set-
ting
Language*2English
French
—OO—
German
Spanish
Italian
Russian
Units*2km (L/100
km)km (km/L)—OO—miles (MPG)
Maintenance system
initializationOFFON—OO—
EV indicator
ON
(Self-light-
ing)
OFF—OO—
switch settings*3Drive
information 1Desired status
screen
*4—OO—
1234
Page 592 of 628
577
9 9-2. Customization
Vehicle specifications
IS300h_EE(OM53B95E)
*1: For details about each function: P. 1 1 8
*2: The default setting varies according to country.
*3:Except F SPORT models
*4: Some status screens cannot be registered (indicated on multi-information dis-
play).
Drive information 1
Current fuel
economy
*5—OO—Average fuel
economy
(after reset)
Drive information 2
Distance
(range)
*5—OO—Average
speed
(after reset)
Pop-up displayONOFF—OO—
Accent color*3BlueRedOOO—
Tachometer settingsON (Self-
changing)
Hybrid System
Indicator
(Always)
—OO—
Tachometer
(Always)
Needle*6BlueRed—OO—White
Speed indicator*6OFF
50 to 200 km/h
(30 to 125
mph)
*7
—OO—50 to 160 km/h
(30 to 100
mph)
*7
REV indicator*64000 r/min
2000 to 6000
r/min
—OO—
OFF
REV peak*6ONOFF—OO—
Function*1Default set-
tingCustomized set-
ting1234
Page 598 of 628
583
9 9-2. Customization
Vehicle specifications
IS300h_EE(OM53B95E)
Lexus parking assist-sensor*1 (P. 271)
*1: If equipped
*2: When Lexus parking assist-sensor is operating.
Automatic air conditioning system (P. 398)
FunctionDefault set-
tingCustomized set-
ting
Detection distance of the
front center sensorFarNearO——O
Detection distance of the
rear center sensorFarNearO——O
Buzzer volume31 to 5O——O
Display setting*2All sensors
displayedDisplay offO——O
1234
FunctionDefault set-
tingCustomized set-
ting
Switching between out-
side air and recirculated
air mode linked to
“AUTO” switch operation
OnOffO——O
A/C Auto switch opera-
tionOnOffO——O
1234
Page 600 of 628

585
9 9-2. Customization
Vehicle specifications
IS300h_EE(OM53B95E)
Vehicle customization
When the speed-detecting automatic door lock and shift-linked automatic door
lock are both on, the door lock operates as follows.
• When shifting the shift lever to any position other than P, all the doors will
be locked.
• If the vehicle is started with all doors locked, the speed-detecting automatic
door lock will not operate.
• If the vehicle is started with any door unlocked, the speed-detecting auto-
matic door lock will operate.
When the smart entry & start system is off, the entry unlock function cannot be
customized.
When the doors remain closed after unlocking the doors and the timer activated
automatic door lock function activates, signals will be generated in accordance
with the operation buzzer volume and operational signal (Emergency flashers)
function settings.
When customizing using the Remote Touch or Lexus Display Audio controller
Stop the vehicle in a safe place, apply the parking brake, and shift the shift lever
to P. Also, to prevent 12-volt battery discharge, leave the hybrid system operating
while customizing the features.
CAUTION
During customization
As the hybrid system needs to be operating during customization, ensure that
the vehicle is parked in a place with adequate ventilation. In a closed area such
as a garage, exhaust gases including harmful carbon monoxide (CO) may col-
lect and enter the vehicle. This may lead to death or a serious health hazard.
NOTICE
During customization
To prevent 12-volt battery discharge, ensure that the hybrid system is operating
while customizing features.
Page 607 of 628
591What to do if... (Troubleshooting)
IS300h_EE(OM53B95E)
Is the message displayed on the multi-information display?
Check the message on the multi-information display. (P. 514)
When a warning light turns on or a warning message is displayed, refer
to
P. 507, 514.
Vehicles with an emergency tire puncture repair kit
Stop the vehicle in a safe place and repair the flat tire temporarily with
the emergency tire puncture repair kit. (P. 531)
Vehicles with run-flat tires
Slow down and drive with extra caution. Take your vehicle to the near-
est Lexus dealer or authorized tire dealer to have the flat tire replaced.
(P. 545)
Try the procedure for when the vehicle becomes stuck in mud, dirt, or
snow. (P. 560) A warning buzzer sounds when leaving the vehicle
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