tire pressure Lexus IS250 2014 Maintenance data (fuel, oil level, etc.) / LEXUS 2014 IS250,IS350 OWNERS MANUAL (OM53758U)

TABLE OF CONTENTS6
IS350/250_U (OM53758U)
7-1. Maintenance and careCleaning and protecting the vehicle exterior ................ 384
Cleaning and protecting the vehicle inte rior.................. 387
7-2. Maintenance Maintenance requirements ............................ 390
General maintenance.............. 393
Emission inspection and maintenance (I/M)
programs .................................... 396
7-3. Do-it-yourself maintenance Do-it-yourself service precautions.................................397
Hood ............................................... 399
Positioning a floor jack.............400
Engine compartment ................ 401
Tires..................................................... 411
Tire inflation pressure ............... 420
Wheels ........................................... 423
Air conditioning filter ............... 425
Electronic key battery...............427
Checking and replacing fuses.............................................. 429
Light bulbs .................................... 432 8-1. Essential information
Emergency flashers .................. 446
If your vehicle has to be stopped in
an emergency ...........................447
8-2. Steps to take in an emergency
If your vehicle needs to be towed................................ 448
If you think something is wrong....................................... 453
Fuel pump shut off system ...... 454
If a warning light turns on or a warning buzzer
sounds ......................................... 455
If a warning message is displayed .................................. 461
If you have a flat tire ...................475
If the engine will not start ........ 485
If the shift lever cannot be shifted from P ..................... 487
If the electronic key does not operate properly .............488
If the vehicle battery is discharged............................. 490
If your vehicle overheats ......... 494
If the vehicle becomes stuck .............................................. 497
7Maintenance and care8When trouble arises

15Pictorial index
IS350/250_U (OM53758U)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 182
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 254
To prevent freezing (windshield wiper de-icer)
* . . . . . . . . . . . . . . . . . . . . . . . P. 350
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 385
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 1 8 8
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 188
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 502
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 411
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 507
Winter tires/tire chain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 254
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . . . . P. 411
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 475
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 399
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 399
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 502
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 494
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 46 3
Headlights/parking lights/daytime running lights . . . . . . . . . . . . . . . . . . . P. 173
Fog lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 181
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 170
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 173
Stop lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 146
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 17 3
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 16 4
Side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 173
4
5
6
7
Light bulbs of the exterior lights for driving(Replacing method: P. 432, Watts: P. 509)
*: If equipped
8
9
10
11
12
13
14
15

19Pictorial index
IS350/250_U (OM53758U)
Driving position memory switches*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 123
Outside rear view mirror switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 134
Door lock switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 105
Power window switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 137
Window lock switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 137
Tire pressure warning reset switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 413
PCS OFF switch
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 241
*1: If equipped
*2: For vehicles with a navigation system, refer to “Navigation System Owner's Manual”.
1
2
3
4
5
6
7

772. Instrument cluster
2
Instrument cluster
IS350/250_U (OM53758U)
Warning lights inform the driver of malfunctions in the indicated vehicle systems.
Warning lights
*1
(U.S.A.)
Brake system warning light
( P. 4 5 5 )
*1, 2
(if equipped)
Pre-collision system warn-
ing light
( P. 4 5 6 )
*1
(Canada)
Brake system warning light
( P. 4 5 5 )*1
Slip indicator ( P. 4 5 6 )
*1Charging system warning
light ( P. 4 5 5 )*1 Automatic headlight level-
ing system warning light
( P. 4 5 6 )
*1
(U.S.A.)
Malfunction indicator lamp
( P. 4 5 5 )*1Open door warning light
( P. 4 5 6 )
*1
(Canada)
Malfunction indicator lamp
( P. 4 5 5 )Low fuel level warning light
( P. 4 5 6 )
*1SRS warning light
( P. 4 5 5 )Seat belt reminder light
( P. 4 5 6 )
*1
(U.S.A.)
ABS warning light
( P. 4 5 5 )*1Master warning light
( P. 4 5 6 )
*1
(Canada)
ABS warning light
( P. 4 5 5 )*1Tire pressure warning light
( P. 4 5 7 )
*1Electric power steering sys-
tem warning light
( P. 4 5 5 )

882. Instrument cluster
IS350/250_U (OM53758U)
■Distance (driving range/after start)*
Displays the estimated maximum distance that can be driven with the quantity
of fuel remaining and the distance driv en after the engine was started respec-
tively.
• This distance is computed based on your average fuel consumption. As a result,
the actual distance that can be driven may differ from that displayed.
• When only a small amount of fuel is added to the tank, the display may not be
updated.
When refueling, turn the engine switch off. If the vehicle is refueled without turning
the engine switch off, the display may not be updated.
■Eco Driving Indicator
 P. 9 0
■Tire inflation pressure
P. 4 1 2
■Gear positions
P. 1 6 8
*: Displayed when the item is set in “Drive Info 1” or “Drive Info 2”. Use these values as a
reference.
■Language
Select to change the language on the display.
■Units
Select to change the unit of measure for fuel consumption.
■Maintenance system
Select to reset the maintenance data after the required maintenance is per-
formed. (
 P. 3 9 1)
■Eco Driving Indicator Light
Select to activate/deactivate th e Eco Driving Indicator Light.
■ switch settings (except F SPORT models)
Displays a procedure to register a desired screen to .
You can register 1 screen as a shortcut, which can be displayed by pressing . (
P. 8 7 )
■Drive information 1 /Drive information 2
Select to select up to 2 items that will be displayed on the “Drive Info 1” screen
and “Drive Info 2” screen respectively. (
 P. 8 7 )
Settings display

912. Instrument cluster
2
Instrument cluster
IS350/250_U (OM53758U)
■Tire inflation pressure
●It may take a few minutes to display the tire inflation pressure after the engine switch is
turned to IGNITION ON mode. It may also take a few minutes to display the tire infla-
tion pressure after inflation pressure has been adjusted.
●“---” may be displayed if the tire information cannot be determined due to unfavorable
radio wave conditions.
●Tire inflation pressure changes with temperature. The displayed values may also be dif-
ferent from the values measured using a tire pressure gauge.
■Liquid crystal display
P. 8 4
CAUTION
■The information display at low temperatures
Allow the interior of the vehicle to warm up before using the liquid crystal information
display. At extremely low temperatures, th e information display monitor may respond
slowly, and display changes may be delayed.
For example, there is a lag between the driver’s shifting and the new gear number
appearing on the display. This lag could cau se the driver to downshift again, causing
rapid and excessive engine braking and po ssibly an accident resulting in death or
injury.
■Cautions during setting up the display
As the engine needs to be running during sett ing up the display, ensure that the vehicle
is parked in a place with adequate ventila tion. In a closed area such as a garage,
exhaust gases including harmful carbon monoxide (CO) may collect and enter the
vehicle. This may lead to death or a serious health hazard.
NOTICE
■During setting up the display
To prevent battery discharge, ensure that th e engine is running while setting up the dis-
play features.

2114-5. Using the driving support systems
4
Driving
IS350/250_U (OM53758U)
■Temporary cancelation of the LDA system functions
If any of the following occurs, the LDA system functions will be temporarily canceled. The
functions will resume after the necessar y operating conditions have returned.
●The turn signal lever is operated.
●The vehicle speed deviates from the operating range of the LDA system functions.
●When the lane lines cannot be recognized while driving.
●When the lane departure warning sounds.
The lane departure warning function will no t operate again for a several seconds after it
has been activated, even if the vehicle leaves the lane again.
■The lane departure warning
Depending on the audio system sound level or air conditioning fan noise while the audio
system or air conditioning system is in use, it may be difficult to hear the warning sound.
■After the vehicle has been parked in the sun
The LDA system may not be available and a warning message ( P. 465) will be dis-
played for a while after driving has started. When the temperature in the cabin decreases
and the temperature around the camera sensor ( P. 196) becomes suit able for its oper-
ation, the functions will begin to operate.
■If there are lane markers on only one side of the vehicle
The lane departure warning will not operate fo r the side on which lane markers could not
be recognized.
■Conditions in which the functi on may not operate correctly
In the following situations, the camera sensor may be unable to recognize lane markers
causing the lane departure warn ing function to operate incorrectly. However, this does
not indicate a malfunction.
●When driving through an area with no lane markers, such as a tollbooth, a crossing or
before a ticket checkpoint
●When driving on a sharp curve
●When lane markers are extremely narrow or extremely wide
●When the vehicle leans to one side an unus ual amount due to a heavy load or improper
tire inflation pressure
●When the following distance between your vehicle and the vehicle ahead is extremely
short
●When the lane markers are yellow (These may be more difficult for the system to rec-
ognize compared to white markers.)
●When the lane markers are broken, Botts’ dots (raised pavement markers) or stones
●When the lane markers are on a curb etc.
●When lane markers are obscured or partially obscured by sand, dirt, etc.
●When there are shadows on the road running parallel with lane markers, or if a shadow
covers the lane markers
●When driving on a particularly brig ht road surface, such as concrete
●When driving on a road surface that is bright due to reflected light
●When driving in a location where the light level changes rapi dly, such as the entrance to
or exit from a tunnel
●When sunlight or the headlights of oncoming vehicles are shining directly into the cam-
era lens

2284-5. Using the driving support systems
IS350/250_U (OM53758U)
■If you notice any symptoms
If you notice any of the following symp toms, refer to the likely cause and the
solution, and re-check.
If the symptom is not resolved by the solution, have the vehicle inspected by
your Lexus dealer.
Things you should know
Likely causeSolution
 The image is difficult to see
• The vehicle is in a dark area
• The temperature around the lens is
either high or low
• The outside temperature is low
• There are water droplets on the cam- era
• It is raining or humid
• Foreign matter (mud etc.) is adhering to the camera
• There are scratches on the camera
• Sunlight or headlights are shining directly into the camera
• The vehicle is under fluorescent lights, sodium lights, mercury lights etc.
If this happens due to these causes, it
does not indicate a malfunction.
Back up while visually checking the vehi-
cle’s surroundings. (Use the monitor
again once conditions have been
improved.)
To adjust the image on the rear view mon-
itor system screen. ( P. 2 7 2 )
 The image is blurry
Dirt or foreign matter (such as water
droplets, snow, mud etc.) is adhering to
the camera.Rinse the camera lens with water and
wipe it clean with a soft cloth.
Wash with a mild soap if the dirt is stub-
born.
The image is out of alignment
The camera or surrounding area has
received a strong impact.Have the vehicle inspected by your Lexus
dealer.
The fixed guide lines are very far out of alignment
• The vehicle is tilted (there is a heavy
load on the vehicle, tire pressure is low
due to a tire puncture, etc.)
• The vehicle is used on an incline.If this happens due to these causes, it
does not indicate a malfunction. Back up
while visually checking the vehicle's sur-
roundings.
The camera position is out of alignment.Have the vehicle inspected by your Lexus
dealer.

2394-5. Using the driving support systems
4
Driving
IS350/250_U (OM53758U)
CAUTION
■The ABS does not operate effectively when
●The limits of tire gripping performance have been exceeded (such as excessively
worn tires on a snow covered road).
●The vehicle hydroplanes while driving at high speed on wet or slick roads.
■Stopping distance when the ABS is operating may exceed that of normal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always maintain a
safe distance from the vehicle in front of you, especially in the following situations:
●When driving on dirt, gravel or snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with potholes or uneven surfaces
■TRAC may not operate effectively when
Directional control and power may not be achievable while drivin g on slippery road
surfaces, even if the TRAC system is operating.
Drive the vehicle carefully in conditions where stability and power may be lost.
■Hill- start assist control does not operate effectively when
●Do not overly rely on hill-start assist contro l. Hill-start assist control may not operate
effectively on steep inclines and roads covered with ice.
●Unlike the parking brake, hill-start assist control is not intended to hold the vehicle
stationary for an extended period of time. Do not attempt to use hill-start assist con-
trol to hold the vehicle on an incline, as doing so may lead to an accident.
■When the VSC is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may cause an
accident. Exercise particular care when the indicator light flashes.
■When the TRAC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road conditions. As these
are the systems to ensure vehicle stability and driving force, do not turn the TRAC/
VSC systems off unless necessary.
■Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire infla-
tion pressure level.
The ABS, TRAC and VSC systems will not function correctly if different tires are
installed on the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■Handling of tires and the suspension
Using tires with any kind of problem or modi fying the suspension will affect the driving
assist systems, and may caus e a system to malfunction.

2564-6. Driving tips
IS350/250_U (OM53758U)
CAUTION
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in a loss of ve hicle control and cause death or serious injury.
●Use tires of the specified size.
●Maintain the recommended level of air pressure.
●Do not drive in excess of 75 mph (120 km/h), regardless of the type of snow tires
being used.
●Use snow tires on all, not just some wheels.
■Driving with tire chains (except vehicles with 18-inch tires)
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in the vehicle being unable to be driven safely, and may
cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains being used, or 30
mph (50 km/h), whichever is lower.
●Avoid driving on bumpy road surfaces or over potholes.
●Avoid sudden acceleration, ab rupt steering, sudden braking and shifting operations
that cause sudden engine braking.
●Slow down sufficiently before entering a cu rve to ensure that vehicle control is main-
tained.
●Do not use LDA (Lane Departure Alert) system.
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow tires from Lexus dealers or legitimate tire
retailers.
This is because the removal and attachment of snow tires affects the operation of the
tire pressure warning valves and transmitters.
■Fitting tire chains (except vehicles with 18-inch tires)
The tire pressure warning valves and transmitters may not function correctly when tire
chains are fitted.