Page 532 of 628

5328-2. Steps to take in an emergency
IS300h_EE(OM53D56E)
(If equipped)
Indicates that the radar sensor is dirty or covered with
iceA buzzer also sounds.
→ Clean the sensor.
(If equipped)
Indicates that the dynamic radar cruise control system is
unable to judge vehicle-to-vehicle distance
A buzzer also sounds.
→ Tu r n o f f s n o w m o d e .
If the windshield wipers are on, turn them off or set
them to a mode other than AUTO or high speed
wiper operation.
(If equipped)
Indicates that the LDA (Lane Departure Alert) system is
suspended
The camera sensor temperature is higher than the
operation temperature range.
A buzzer also sounds.
→ Restart the LDA after driving for a while.
(If equipped)
Indicates that:
• The grille shutter system cannot operate; or
• The grille shutter is dirty or covered with ice
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
(If equipped)
Indicates that a Blind Spot Monitor sensor or the sur-
rounding area on the bumper is dirty or covered with ice
A buzzer also sounds.
→ Clean the sensor and its surrounding area on the
bumper.
(If equipped)
Indicates a malfunction in:
• The cruise control system; or
• The dynamic radar cruise control system
Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Wa r n i n g m e s s a g eDetails/Actions
Page 536 of 628

5368-2. Steps to take in an emergency
IS300h_EE(OM53D56E)
Indicates that remaining fuel is approximately 10 L (2.6
gal., 2.2 Imp. gal.) or less
→Refuel the vehicle.
Indicates that the TRC (Tr action Control) system has
been deactivated
→ Tu r n t h e T R C o n . ( →P. 2 9 8 )
Indicates that the engine oil is scheduled to be changed.
(The indicator will not work properly unless the message
has been reset.)
→ Check the engine oil, and change if necessary.
After changing the engine oil, the message should
be reset.
Indicates that the engine oil should be changed. (After
the engine oil is changed and the message has been
reset.)
→Check and change the engine oil, and oil filter by
any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional. After
changing the engine oil, the message should be
reset.
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
→ Turn the high beam on and press the Automatic
High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-crash brake system oper-
ation is stopped
→Tu r n t h e V S C o n . ( →P. 2 9 8 )
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is not
currently functional because the grille cover or the sen-
sor is dirty
→ Check the grille cover and the sensor and clean
them if they are dirty.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
Page 597 of 628

597
9
9-2. Customization
Vehicle specifications
IS300h_EE(OM53D56E)
■Tu r n s i g n a l l e v e r (
→P. 225)
*1: After flashing the turn signal lights when turn ing left or right while this function is off
and the turn signal lever is moved to the first position in the direction of the flashing
light, the turn signal lights can be selected to be flashing or off.
*2: The turn signal lights keep flashing if the turn signal lever is moved to the first position in the direction of flashing light.
*3: The turn signal lights will be off if the turn signal lever is moved to the first position inthe direction of flashing light.
■Automatic light control system ( →P. 2 2 9 )
FunctionDefault settingCustomized setting
The number of times the turn
signal lights flash automati-
cally when the turn signal
lever is moved to the first
position during a lane
change
*1
3
5
——O7
Off *2
Off*3
123
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2O—O
Time elapsed before head-
lights automatically turn off30 seconds
60 seconds
——O90 seconds
120 seconds
123
Page 598 of 628
5989-2. Customization
IS300h_EE(OM53D56E)
■Lexus parking assist-sensor*1 ( → P. 2 76 )
*1: If equipped
*2: When Lexus parking assist-sensor is operating.
■Automatic air conditioning system ( →P. 4 1 2 )
■Seat heaters* (→ P. 4 2 3 )
*:If equipped
FunctionDefault settingCustomized setting
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 dis-
playedDisplay offO—O
123
FunctionDefault settingCustomized setting
Switching between outside
air and recirculated air mode
linked to “AUTO” switch
operation
OnOffO—O
A/C Auto switch operationOnOffO—O
123
FunctionDefault settingCustomized setting
Seat heater timer controlOffOnO—O
123
Page 603 of 628
603
Index
IS300h_EE(OM53D56E)
What to do if... (Troubleshooting)................................604
Alphabetical index.................................608
For vehicles with a navigation or multimedia system, refer to
“NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S
MANUAL” for information regarding the equipment listed below.
•Navigation system
• Audio/video system • Lexus parking assist-sensor
• Lexus parking assist monitor
Page 606 of 628

606What to do if... (Troubleshooting)
IS300h_EE(OM53D56E)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( →P. 1 8 5 )
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not operating) for a period of time.
(→ P. 2 1 4 )
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( →P. 5 2 3 )
●The parking brake indicator is on
Is the parking brake released? ( →P. 2 2 7 )
Depending on the situation, other types of warning buzzer may also sound.
( → P. 5 2 1 , 5 2 7 )
●Did anyone inside the vehicle open a door or anything move inside the vehicle
during setting the alarm?
The sensor detects them and the alarm sounds. ( →P. 9 6 )
Do one of the following to deactivate or stop the alarm: • Unlock the doors or open the trunk using the entry function or wireless
remote control.
• Start the hybrid system. The windows do not open or close by operating the power window
switches
The power switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and th
e horn sounds (if equipped)
Page 616 of 628

616Alphabetical index
IS300h_EE(OM53D56E)
HooksCargo hooks........................................ 432
Coat hooks ........................................... 439
Retaining hooks (floor mat)............. 34
Horn ............................................................ 178
Hybrid battery (traction battery).......83
Hybrid battery (traction battery) air vents.....................................................84
Hybrid system ........................................... 79 Emergency shut off system.............. 84
Energy monitor/consumption screen.........................121
EV drive mode ..................................... 217
High voltage components ...............83
Hybrid System Indicator ................... 113
Hybrid system precautions.............. 83
Hybrid vehicle driving tips ............320
If the hybrid system will not start ...................................... 560
Overheating ...........................................571
Power (ignition) switch ..................... 212
Starting the hybrid system............... 212
Hybrid System Indicator .......................113
Hybrid transmission .............................. 219 If the shift lever cannot be shifted from P ...................................562
Paddle shift switches .......................... 221
S mode.................................................... 222 Identification
Engine ..................................................... 579
Vehicle.................................................... 579
Ignition switch (power switch) ..........212
Illuminated entry system .................... 426
Immobilizer system................................. 90
Indicators .................................................. 106
Initialization Engine oil maintenance data .......458
Moon roof.................................................191
Multi-information display................... 117
Power windows ...................................186
Tire pressure warning
system.................................................. 468
Inside door handle lights ................... 425
Inside rear view mirror ......................... 179
Instrument panel light control ............ 112
Interior lights........................................... 425 Wattage ................................................ 588
Intrusion sensor and tilt sensor .......... 99
ISOFIX rigid anchors ............................ 69
Jack Positioning the jack .......................... 454
Vehicle-equipped jack................... 476
Jack handle ..............................................476
Jam protection function Moon roof...............................................190
Power window .....................................186I
J
Page 617 of 628

617Alphabetical index
IS300h_EE(OM53D56E)
Keyless entrySmart entry & start system ......................................... 136, 143
Wireless remote control ....... 136, 143
Keys ............................................................. 130
Battery-Saving Function ................. 150
Electronic key ....................................... 130
If the electronic key does not operate properly ............................563
Key number plate ............................... 130
Keyless entry ............................... 136, 143
Mechanical key...................................... 131
Power switch ......................................... 212
Replacing the battery...................... 488
Warning buzzer ................................... 137
Wireless remote control ................. 130
Knee airbags.............................................. 43 Lane Departure Alert (LDA) .......... 270
Language
(multi-information display) ............... 117
LDA (Lane Departure Alert) .......... 270
Lever Auxiliary catch lever......................... 453
Hood lock release lever ................ 453
Shift lever ................................................. 219
Turn signal lever..................................225
Wiper lever .......................................... 238
Lexus Display Audio controller...... 330
Lexus Display Audio system............ 328
Lexus parking assist-sensor ..............276
License plate lights .............................. 229 Light switch............................................229
Replacing light bulbs ....................... 507
Light bulbs
Replacing............................................... 497
Wattage ................................................ 588
KL