2018 Lexus IS300 roof

5428-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Indicates that the engine switch is turned off or turned to
ACCESSORY mode and the driver’s door is opened
while the lights are turned on
A buzzer also sounds.
→ Turn the lights off.
(If equipped)
Indicates that the moon roof is not fully closed (with the
engine switch off, and the driver’s door open)
A buzzer also sounds.
→ Close the moon roof.
Indicates that the windows are not fully closed (with the
engine switch off, and the driver’s door open)
A buzzer also sounds.
→ Close all the windows.
(If equipped)
Indicates that the windows and the moon roof are not
fully closed (with the engine switch off, and the driver’s
door open)
A buzzer also sounds.
→ Close all the windows and the moon roof.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)

5698-2. Steps to take in an emergency
8
When trouble arises
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■Doors
Use the mechanical key (→P. 111) in
order to perform the following oper-
ations:
Locks all the doors
Closes the windows and moon
roof (turn and hold)
*
Unlocks the door
Turning the key rearward unlocks the
driver’s door. Turning the key once
again within 5 seconds unlocks the
other doors.
Opens the windows and moon roof (turn and hold)*
*
: This setting must be custom ized at your Lexus dealer.
■Trunk
Turn the mechanical key clockwise
to open. (→P. 72)
If the electronic key does not operate properly
If communication between the electron ic key and vehicle is interrupted (→P.
129) or the electronic key cannot be us ed because the battery is depleted, the
smart access system with push-button st art and wireless remote control can-
not be used. In such cases, the doors and trunk can be opened and the engine
can be started by follow ing the procedure below.
Locking and unlocking the doors, unlocking the trunk and key linked
functions
1
2
3
4

5718-2. Steps to take in an emergency
8
When trouble arises
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when stopping
the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( →P. 500)
■Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is pressed.
( → P. 179)
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features: → P. 611)
●Check if battery-saving mode is set. If it is set, cancel the function. (→P. 128)
WARNING
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof afte r 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 op erate the mechanical key. It is possible for children and
other passengers to get caught in the power window or moon roof.
3

6069-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has no t been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in exce ss of those standard items
which may be replaced) of automatic transmission,
power steering, power brakes, power windows, power
seats, radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in the
third column of Table 1
* below
Production options weight
The combined weight of in stalled regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

6159-2. Customization
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■Driving position memory* (→ P. 139)
*: If equipped
■Power windows ( →P. 154)
■Moon roof* (→ P. 158)
*: If equipped
FunctionDefault settingCustomized setting
Driver’s seat movement when
exiting the vehicleStandardOffOOPartial
Doors linked to the driving posi-
tion memory recall functionDriver’s doorAll doors—O
12
FunctionDefault settingCustomized setting
Mechanical key linked operationOffOn—O
Wireless remote control linked
operationOffOn (Open only)—O
Wireless remote control linked
operation signal (buzzer)OnOff—O
12
FunctionDefault settingCustomized setting
Mechanical key linked operationOffOn—O
Linked operation of components
when mechanical key is used
(open only)Slide onlyTilt only—O
Wireless remote control linked
operationOffOn (Open only)—O
Linked operation of components
when wireless remote control is
usedSlide onlyTilt only—O
Wireless remote control linked
operation signal (buzzer)OnOff—O
12

637What to do if... (Troubleshooting)
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
●Is the electronic key left inside the vehicle or the moon roof opened?
Check the message on the multi-information display. (→ P. 529)
●When a warning light turns on or a warning message is displayed, refer to
P. 522, 529.
●Stop the vehicle in a safe place and replace the flat tire with the spare tire.
(→ P. 556)
●Try the procedure for when the vehicle becomes stuck in mud, dirt, or snow.
(→ P. 580)
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

641Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Child safety ................................................ 52
Airbag precautions ..............................38
Battery precautions ............... 481, 575
Child restraint system ......................... 53
How your child should wear the seat belt .......................................... 32
Installing child restraints..................... 57
Moon roof precautions...................... 161
Power window lock switch ............ 154
Power window precautions .......... 157
Rear door child-protectors ............. 119
Removed electronic key battery precautions................ 501
Seat belt extender precautions ........................................... 35
Seat belt precautions ..........................56
Seat heater precautions................... 416
Trunk precautions............................... 125
Child-protectors...................................... 119 Cleaning ....................................... 452, 456
Aluminum wheels .............................. 453
Exterior ................................................... 452
Interior ..................................................... 456
Seat belts................................................ 457
Clock.......................................................... 427
Coat hooks ............................................... 431
Compass ................................................. 439
Condenser...............................................478
Console box ............................................422
Cooling system ...................................... 476 Engine overheating .......................... 576
Cruise control Dynamic radar cruise control ..... 239
Cup holders.............................................423
Current fuel consumption .............................. 104, 105
Curtain shield airbags ............................36
Customizable features ......................... 611

645Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Hands-free system
(for cellular phone) ........................... 363
HD Radio
® system .............................. 330
Head restraints ........................................144
Headlights .................................................194 AFS (Adaptive Front-lighting System) ................................................. 195
Light switch ............................................ 194
Replacing light bulbs ....................... 509
Headlights cleaner............................... 202
Heaters Air conditioning system ..................407
Heated steering wheel ..................... 416
Outside rear view mirrors ...............412
Seat heaters ............................................417
Hill-start assist control ........................ 292
Hood .......................................................... 468 Open ....................................................... 468
Hooks Cargo hooks ........................................425
Coat hooks ............................................ 431
Retaining hooks (floor mat) ............. 26
Horn ............................................................ 148 I/M test ..................................................... 465
Identification
Engine .................................................... 586
Vehicle ................................................... 585
Ignition switch (engine switch) ......... 178
Illuminated entry system ..................... 419
Immobilizer system ................................ 68
Indicators .....................................................78
Initialization Engine oil maintenance data ....... 475
Maintenance ........................................460
Moon roof .............................................. 160
Multi-information display.................. 95
Power windows................................... 155
Tire pressure warning system ...............................485
Initiators (tire pressure warning system) .................................. 491
Inside door handle lights ..................... 418
Inside rear view mirror......................... 149
Instrument panel light control ............ 84
Intercooler ...............................................478
Intercooler coolant............................... 476 Capacity................................................ 590
Checking ............................................... 476
Preparing and checking before winter .................................... 297
Interior lights ............................................ 419 Wattage .................................................595
Intuitive parking assist .......................... 251
HI