
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

588
IS300h_EE(OM53B95E)What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
If you lose your mechanical keys, new genuine mechanical keys can be
made by any authorized Lexus dealer or repairer, or another duly qual-
ified and equipped professional. (P. 132)
If you lose your electronic keys, the risk of vehicle theft increases sig-
nificantly. Contact any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional immediately. (P. 135)
Is the electronic key battery weak or depleted? (P. 472)
Is the power switch in ON mode?
When locking the doors, turn the power switch off. (P. 210)
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on
your person.
The function may not operate properly due to the condition of the radio
wave. (P. 151)
Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock
is set. Open the rear door from outside and then unlock the child-pro-
tector lock. (P. 1 4 0 )
If you have a problem, check the following before contacting any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped
professional.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

589What to do if... (Troubleshooting)
IS300h_EE(OM53B95E)
The function to prevent the electronic key from being left inside the
trunk will operate and you can open the trunk as usual. Take the key
out from the trunk. (P. 146)
Did you press the power switch while firmly depressing the brake
pedal?
(P. 209)
Is the shift lever in P? (P. 2 1 1 )
Is the electronic key anywhere detectable inside the vehicle? (P. 149)
Is the steering wheel unlocked? (P. 212)
Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. (P.
550)
Is the 12-volt battery discharged? (P. 551)
Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with
the power switch in ON mode. (P. 548)
It is locked automatically to prevent theft of the vehicle. (P. 212) The trunk lid is closed with the electronic key left inside
If you think something is wrong
The hybrid system does not start
The shift lever cannot be shifted from P even if you depress the
brake pedal
The steering wheel cannot be turned after the hybrid system is
stopped

590What to do if... (Troubleshooting)
IS300h_EE(OM53B95E)
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. 184)
The auto power off function will be operated if the vehicle is left in
ACCESSORY or ON mode (the hybrid system is not operating) for a
period of time. (P. 211)
The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (P.
509)
The parking brake indicator is on
Is the parking brake released? (P. 224)
Depending on the situation, other types of warning buzzer may also
sound.
(P. 507, 514)
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 )
To stop the alarm, turn the power switch to ON mode or 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 the horn sounds (if equipped)

592
IS300h_EE(OM53B95E)Alphabetical index
Alphabetical index
A/C ............................................398
Air conditioning filter ...........470
Automatic air conditioning
system.................................398
S-FLOW mode .....................400
Blower customization ...........405
AAC disc ...................................341
ABS (Anti-lock Brake System) .293
Function ................................293
Warning light........................508
Accent color ..............................118
Adaptive Variable Suspension
system .....................................294
Air conditioning filter ...............470
Air conditioning system ............398
Air conditioning filter ...........470
Automatic air conditioning
system.................................398
S-FLOW mode .....................400
Blower customization ...........405Airbags ....................................... 43
Airbag manual on-off system 54
Airbag operating conditions .. 49
Airbag precautions for
your child ............................ 45
Correct driving posture .......... 36
Curtain shield airbag operating
conditions ............................ 49
Curtain shield airbag
precautions .......................... 47
General airbag precautions .... 45
Locations of airbags............... 43
Modification and disposal of
airbags ................................. 48
Side airbag operating
conditions ............................ 49
Side airbag precautions.......... 45
Side and curtain shield airbags
operating conditions ............ 49
Side and curtain shield airbags
precautions .......................... 45
SRS airbags............................ 43
SRS warning light................ 508
Airbag manual on-off system ..... 54
Alarm .......................................... 96
Anchor brackets.......................... 70
Antennas (smart entry &
start system) .......................... 149
A

596Alphabetical index
IS300h_EE(OM53B95E)
Doors .........................................136
Automatic door locking and
unlocking system................140
Door glasses .........................184
Door lock ..............................139
Open door warning buzzer ...137
Open door warning
light ....................................509
Outside rear view mirrors .....180
Rear door child-protector ....140
Drive information ......................117
Drive info 1/Drive info 2...........118
Driver’s and front passenger’s
seat belt reminder light ...........509
Driver’s seat position memory ..168
Driving ......................................192
Break-in tips .........................193
Correct driving posture ...........36
Driving mode select switch ..290
Hybrid vehicle driving tips ...309
Procedures ............................192
Winter drive tips ...................311
Dynamic radar cruise control ....249E-mail ....................................... 375
Eco drive mode......................... 290
Elapsed time ............................. 117
Electric motor (traction motor)... 79
Electric Power Steering (EPS) . 293
Function ............................... 293
Warning light ....................... 508
Electronic key ........................... 130
Battery-saving function ....... 150
If the electronic key does not
operate properly ................ 549
Replacing the battery ........... 472
Emergency, in case of
If the 12-volt battery is
discharged ......................... 551
If the electronic key does not
operate properly ................ 549
If the hybrid system will not
start .................................... 546
If the shift lever cannot be
shifted from P .................... 548
If the warning buzzer sounds507
If the warning light turns on 507
If the warning message is
displayed ........................... 514E

597Alphabetical index
IS300h_EE(OM53B95E)
If you have a flat tire ....531, 545
If you think something
is wrong ..............................506
If your vehicle becomes stuck ....
560
If your vehicle has to be
stopped in an emergency ....499
If your vehicle needs to
be towed .............................500
If your vehicle overheats ......556
Emergency brake signal ............294
Emergency flashers ...................498
Emergency tire puncture
repair kit ..................................531
Energy monitor..........................122
Engine .......................................564
Accessory mode....................210
Compartment ........................439
Engine switch .......................209
Hood .....................................437
How to start the hybrid
system.................................209
Identification number ...........563
Ignition switch
(power switch)....................209
Overheating ..........................556
Power switch ........................209Engine coolant .......................... 444
Capacity ............................... 567
Checking .............................. 444
Preparing and checking
before winter ..................... 311
Engine coolant temperature
gauge ...................................... 110
Engine oil ................................. 440
Capacity ............................... 565
Checking .............................. 440
Preparing and checking
before winter ..................... 311
Engine switch ........................... 209
EPS (Electric Power Steering) . 293
Function ............................... 293
Warning light ....................... 508
EV drive mode.......................... 214
EV indicator ............................. 118

600Alphabetical index
IS300h_EE(OM53B95E)
Hooks
Cargo hooks ..........................417
Coat hooks ............................424
Retaining hooks (floor mat) ...34
Horn...........................................177
Hybrid battery (traction battery) .83
Hybrid battery (traction battery)
air vents .....................................84
Hybrid system .............................79
Emergency shut off system ....84
Energy monitor/
consumption screen ............122
EV drive mode......................214
High voltage components .......83
Hybrid System Indicator ......114
Hybrid system precautions .....83
Hybrid vehicle driving tips ...309
If the hybrid system
will not start .......................546
Overheating ..........................556
Power (ignition) switch ........209
Starting the hybrid system ....209
Hybrid System Indicator ...........114
Hybrid transmission ..................216
If the shift lever cannot be
shifted from P .....................548
Paddle shift switches ............218
S mode ..................................219Identification
Engine .................................. 563
Vehicle ................................. 563
Ignition switch (power switch) . 209
Illuminated entry system .......... 412
Immobilizer system .................... 90
Indicators .................................. 106
Initialization
Moon roof ............................ 189
Multi-information display.... 118
Power windows.................... 185
Tire pressure warning
system................................ 451
Inside door handle lights .......... 411
Inside rear view mirror ............. 178
Instrument panel light control .. 113
Interior lights ............................ 411
Wattage ................................ 572
Intrusion sensor and tilt sensor ... 99
ISOFIX rigid anchors ................. 70I