Page 413 of 600

4137-2. Maintenance
7
Maintenance and care
IS350/300/200t_U (OM53D18U)
■Repair and replacement
It is recommended that genuine Lexus parts be used for repairs to ensure performance
of each system. If non-Lexus parts are used in replacement or if a repair shop other than
a Lexus dealer performs repairs, confirm the warranty coverage.
■Resetting the message indicating maintenance is required (For vehicle sold in U.S.A.
and IS200t for Canada)
After the required maintenance is performed according to the maintenance schedule,
please reset the message.
To reset the message, follow the procedure described below:While the engine is running, switch the mu lti-information display to the “Settings”
screen. ( P. 81)
Select “Scheduled Maintenance” on the “Settings” screen.
Select “Yes” on the “Scheduled Maintenance” screen.
■Allow inspection and repairs to be performed by a Lexus dealer
●Lexus technicians are well-trained specialists an d are kept up to date with the latest ser-
vice information. They are well informed ab out the operations of all systems on your
vehicle.
●Keep a copy of the repair order. It proves that the maintenance that has been per-
formed is under warranty coverage. If any problem should arise while your vehicle is
under warranty, your Lexus dealer will promptly take care of it.
A message will be disp
layed when the reset
procedure has been completed.
1
2
3
Page 427 of 600

4277-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/300/200t_U (OM53D18U)
■After changing the engine oil (IS200t only)
The engine oil maintenance data should be reset. Perform the following procedures:
While the vehicle is stopped, press the me ter control switch on the steering wheel.
Press the or meter control switch on the steering wheel, se lect, and then
press the meter control switch.
Press or meter control switch on the steering wheel to select “Oil Maintenance”
and then press .
Select “Yes” and then press .
A message will be displayed on the multi-information display.
CAUTION
■Used engine oil
●Used engine oil contains potentially harm ful contaminants which may cause skin dis-
orders such as inflammation and skin canc er, so care should be taken to avoid pro-
longed and repeated contact. To remove used engine oil from your skin, wash
thoroughly with soap and water.
●Dispose of used oil and filters only in a sa fe and acceptable manner. Do not dispose of
used oil and filters in household tras h, in sewers or onto the ground.
Call your Lexus dealer, service station or auto parts store for information concerning
recycling or disposal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly tightened.
1
2
3
4
Page 433 of 600
4337-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/300/200t_U (OM53D18U)
If any washer does not work or the
warning message appears on the multi-
information display, the washer tank
may be empty. Add washer fluid.
Washer fluid
CAUTION
■When adding washer fluid
Do not add washer fluid when the engine is hot or running as washer fluid contains
alcohol and may catch fire if spilled on the engine etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces.
■Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the label of the washer fluid bottle.
Page 435 of 600

4357-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/300/200t_U (OM53D18U)
Your vehicle is equipped with a tire pressure warning system that uses tire pres-
sure warning valves and transmitters to detect low tire inflation pressure before
serious problems arise.
●If the tire pressure drops below a predetermined level, the driver is warned by
a screen display and a warning light. ( P. 4 8 8 )
◆Installing tire pressure warning valves and transmitters
When replacing tires or wheels, tire pressure warning valves and transmitters
must also be installed.
When new tire pressure warning valves and transmitters are installed, new ID
codes must be registered in the tire pressure warning computer and the tire
pressure warning system must be initialized. Have tire pressure warning valve
and transmitter ID codes registered by your Lexus dealer. ( P. 4 3 7 )
◆Initializing the tire pressure warning system
■The tire pressure warning system must be initialized in the following circum-
stances:
●When rotating the tires.
When the tire pressure warning system is initialized, the current tire inflation
pressure is set as the benchmark pressure.
Tire pressure warning system
●The tire pressure detected by the tire
pressure warning system can be dis-
played on the multi-information display.
Page 439 of 600

4397-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/300/200t_U (OM53D18U)
■If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is lost.
■Situations in which the tire pressure warning system may not operate properly
●In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• An auxiliary-supported run-flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheelhousings.
• If the tire inflation pressure is extremely higher than the specified level.
• If tires not equipped with tire pressure warning valves and transmitters are used.
• If the ID code on the tire pressure warning valves and transmitters is not registered in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display, air- port or other facility th at generates strong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wireless
communication device
If tire position information is not correctl y displayed due to the radio wave conditions,
the display may be corrected by driving and changing the radio wave conditions.
●When the vehicle is parked, the time taken for the warning to start or go off could be
extended.
●When tire inflation pressure declines rapidly for example when a tire has burst, the
warning may not function.
■The initialization operation
●Make sure to carry out initialization af ter adjusting the tire inflation pressure.
Also, make sure the tires are cold before carry ing out initialization or tire inflation pres-
sure adjustment.
●If you have accidentally turned the engine swit ch off during initialization, it is not neces-
sary to press the reset switch again as init ialization will restart automatically when the
engine switch has been turned to IG NITION ON mode for the next time.
●If you accidentally press the reset switch when initialization is not necessary, adjust the
tire inflation pressure to the specified level when the tires are co ld, and conduct initial-
ization again.
Page 443 of 600
4437-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/300/200t_U (OM53D18U)
The recommended cold tire inflation
pressure and tire size are displayed on
the tire and loading information label.
(P. 5 3 4 )
Tire inflation pressure
Tire inflation pressure
Page 465 of 600

465
When trouble arises8
IS350/300/200t_U (OM53D18U)
8-1. Essential informationEmergency flashers .................. 466
If your vehicle has to be stopped
in an emergency ...................... 467
8-2. Steps to take in an emergency
If your vehicle needs to be towed ................................468
If you think something is wrong ........................................ 474
Fuel pump shut off system ...... 475
If a warning light turns on or a warning buzzer
sounds........................................... 476
If a warning message is displayed ................................ 482
If you have a flat tire................... 496
If the engine will not start ........506
If the shift lever cannot be shifted from P .................... 508
If the electronic key does not operate properly .............509
If the vehicle battery is discharged .............................. 512
If your vehicle overheats .......... 516
If the vehicle becomes stuck ............................................. 520
Page 482 of 600
4828-2. Steps to take in an emergency
IS350/300/200t_U (OM53D18U)
Master warning light
The master warning light also comes on or flashes in order to indicate that a
message is currently being displayed on the multi-information display.
Multi-information display
If any of the warning lights come on again after the following actions have been
performed, contact your Lexus dealer.
If a warning message is displayed
If a warning is shown on the multi-information display, stay calm and perform
the following actions:
Except F SPORT modelsF SPORT models (when the main
meter is in the center position)
F SPORT models (when the main
meter is in the right-side position)
1
2