check engine Lexus IS250 2015 VOICE COMMAND SYSTEM OPERATION / LEXUS 2015 IS250/350 OWNERS MANUAL (OM53C50U)

TABLE OF CONTENTS6
IS350/250_U (OM53C50U)
6-4. Using the other interior features
Other interior features .............377 • Sun visors .................................377
• Vanity mirrors .........................377
• Clock .........................................377
• Power outlet ........................... 378
• Armrest.....................................379
• Rear sunshade .......................379
• Assist grips .............................. 381
• Coat hooks .............................. 381
Garage door opener ............... 382
Compass ....................................... 387
LEXUS Enform Safety Connect...................................... 390
7-1. Maintenance and care Cleaning and protecting the vehicle exterior ................ 396
Cleaning and protecting the vehicle inte rior.................. 399
7-2. Maintenance Maintenance requirements ............................ 402
General maintenance.............. 405
Emission inspection and maintenance (I/M)
programs ....................................408 7-3. Do-it-yourself maintenance
Do-it-yourself service precautions................................ 409
Hood .................................................. 411
Positioning a floor jack............... 412
Engine compartment .................413
Tires.................................................. 423
Tire inflation pressure ............... 432
Wheels ........................................... 435
Air conditio ning filter ................437
Electronic key battery.............. 439
Checking and replacing fuses................................................ 441
Light bulbs .................................... 444
8-1. Essential information Emergency flashers .................. 456
If your vehicle has to be stopped in an
emergency .................................457
7Maintenance and care
8When trouble arises

8
IS350/250_U (OM53C50U)Please note that this manual applies to all
models and explains all equipment, including
options. Therefore, you may find some expl anations for equipment not installed on your
vehicle.
All specifications provided in this manual are current at the time of printing. However,
because of the Lexus policy of continual pr oduct improvement, we reserve the right to
make changes at any time without notice.
Depending on specifications, the vehicle show n in the illustrations may differ from your
vehicle in terms of color and equipment.
Approximately five hours after the engine is turned off, you may hear sound coming from
under the vehicle for several minutes. This is the sound of a fuel evaporation leakage
check and, it does not indicate a malfunction.
A wide variety of non-genuine spare parts and accessories for Lexus vehicles are cur-
rently available in the market. You should know that Toyota does not warrant these prod-
ucts and is not responsible for their performance, repair, or replacement, or for any
damage they may cause to, or adverse effect they may have on, your Lexus vehicle.
This vehicle should not be modified with non-genuine Lexus products. Modification with
non-genuine Lexus products could affect its performance, safety or durability, and may
even violate governmental regulations. In addition, damage or performance problems
resulting from the modification may not be covered under warranty.
The installation of a mobile two-way radio sy stem in your vehicle could affect electronic
systems such as:
●Multiport fuel injection system/sequential multiport fuel injection system
●Dynamic radar cruise control system
●Cruise control system
●Anti-lock brake system
●Vehicle dynamics in tegrated management
●SRS airbag system
●Seat belt pretensioner system
Be sure to check with your Lexus dealer fo r precautionary measures or special instruc-
tions regarding insta llation of a mobile two-way radio system.
For your information
Main Owner’s Manual
Noise from under vehicle after turning off the engine
Accessories, spare parts and modification of your Lexus
Installation of a mobile two-way radio system

15Pictorial index
IS350/250_U (OM53C50U)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 182
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 260
To prevent freezing (windshield wiper de-icer)
* . . . . . . . . . . . . . . . . . . . . . . . . P. 362
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 397
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 1 8 8
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 188
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 514
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 423
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 519
Winter tires/tire chain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 260
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . . .P. 423
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 486
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 411
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 411
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 514
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 506
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 4 74
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. 444, Watts: P. 521)
*: If equipped
8
9
10
11
12
13
14
15

271-1. For safe use
1
For safety and security
IS350/250_U (OM53C50U)
CAUTION
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering with the ped-
als while driving. An unexpectedly high spee d may result or it may become difficult to
stop the vehicle, leading to an accident, or leading to death or a serious injury.
■When installing the driver’s floor mat
●Do not use floor mats designed for other models or different model year vehicles,
even if they are Lexus Genuine floor mats.
●Only use floor mats designed for the driver’s seat.
●Always install the floor mat securely using the retaining hooks (clips) provided.
●Do not use two or more floor mats on top of each other.
●Do not place the floor mat bottom-side up or upside-down.
■Before driving
●Check that the floor mat is securely fixed in
the correct place with all the provided retain-
ing hooks (clips). Be especially careful to per-
form this check after cleaning the floor.
●With the engine stopped and the shift lever in
P, fully depress each pedal to the floor to
make sure it does not interfere with the floor
mat.

681-1. For safe use
IS350/250_U (OM53C50U)
Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if inhaled.
CAUTION
Exhaust gases include harmful carbon monoxi de (CO), which is colorless and odorless.
Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an accident
caused by light-headedness, or may lead to death or a serious health hazard.
■Important points while driving
●Keep the trunk lid closed.
●If you smell exhaust gases in the vehicle ev en when the trunk lid is closed, open the
windows and have the vehicle inspected at your Lexus dealer as soon as possible.
■When parking
●If the vehicle is in a poorly ventilated area or a closed area, such as a garage, stop the
engine.
●Do not leave the vehicle with the engine on for a long time.
If such a situation cannot be avoided, park the vehicle in an open space and ensure
that exhaust fumes do not enter the vehicle interior.
●Do not leave the engine running in an area with snow build-up, or where it is snowing.
If snowbanks build up around the vehicle wh ile the engine is running, exhaust gases
may collect and enter the vehicle.
■Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or crack caused
by corrosion, damage to a joint or abnormal exhaust noise, be sure to have the vehicle
inspected and repaired by your Lexus dealer.

782. Instrument cluster
IS350/250_U (OM53C50U)
*1: These lights turn on when the engine switch is turned to IGNITION ON mode to indicate that a system check is being perfor med. They will turn off after the engine is
on, or after a few seconds. There may be a ma lfunction in a system if the lights do not
come on, or turn off. Have the vehi cle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
The indicators inform the driver of the operating state of the vehicle’s various sys-
tems.
Indicators
Turn signal indicator
( P. 1 7 0 )
(if equipped)
LDA (Lane Departure
Alert) indicator ( P. 2 0 8 )
(U.S.A.)
Headlight indicator
( P. 1 7 3 )

(if equipped)
Intuitive parking assist indi-
cator ( P. 2 1 4 )
(Canada)
Tail light indicator
( P. 1 7 3 ) *1, 2 Slip indicator ( P. 2 4 1 )
Headlight high beam indi-
cator ( P. 1 74 )
*1VSC OFF indicator
( P. 2 4 2 )
(if equipped)
Automatic High Beam indi-
cator ( P. 1 76 )*1, 3
(if equipped)
Pre-collision system warn-
ing light
( P. 2 4 7 )
(if equipped)
Fog light indicator
( P. 1 8 1 )*4, 5
(if equipped)
BSM (Blind Spot Monitor)
outside rear view mirror
indicators ( P. 252)
Cruise control indicator
(  P. 192, 196)
*6Security indicator
( P. 6 9 , 7 1 )
(if equipped)
Dynamic radar cruise con-
trol indicator ( P. 1 9 6 )*7Low outside temperature
indicator ( P. 8 1 )
Cruise control “SET” indica-
tor ( P. 192, 196)
*1Eco Driving Indicator Light
( P. 9 0 )

792. Instrument cluster
2
Instrument cluster
IS350/250_U (OM53C50U)
*1: These lights turn on when the engine switch is turned to IGNITION ON mode toindicate that a system check is being perfor med. They will turn off after the engine is
on, or after a few seconds. There may be a ma lfunction in a system if the lights do not
come on, or turn off. Have the vehi cle inspected by your Lexus dealer.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when the system is turned off. The light flashes faster than usual to
indicate that the system is operating.
*4: In order to confirm operation, the BSM outside rear view mirror indicators illuminatein the following situations:
• When the engine switch is turned to IGNITION ON mode while the BSM main
switch is set to ON.
• When the BSM main switch is set to ON while the engine switch is in IGNITION
ON mode.
If the system is functioning correctly, the BSM outside rear view mirror indicators will
turn off after a few seconds.
If the BSM outside rear view mirror indica tors do not illuminate or do not turn off,
there may be a malfunction in the system.
If this occurs, have the vehicle inspected by your Lexus dealer.
*5: This light illuminates on the outside rear view mirrors.
*6: This light illuminates on the center panel.
*7: When the outside temperature is approximately 37 F (3 C) or lower, the indicator
will flash for approximately 10 seconds, then stay on.
*8:Except F SPORT models
*9:F SPORT models
*8Eco drive mode indicator
( P. 2 3 7 )*9
(if equipped)
“SPORT S+” indicator
( P. 2 3 7 )
*9Eco drive mode indicator
( P. 2 3 7 )*8Snow mode indicator
( P. 1 6 5 )
*8“SPORT” indicator
( P. 2 3 7 )*9Snow mode indicator
( P. 1 6 5 )
*9
(if equipped)
“SPORT” indicator
( P. 2 3 7 )*1, 6“AIR BAG ON/OFF”
indicator ( P. 4 7 )
*9
(if equipped)
“SPORT S” indicator
( P. 2 3 7 )

852. Instrument cluster
2
Instrument cluster
IS350/250_U (OM53C50U)
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indicates
the maximum engine speed.
●The engine may be overheating if the engine coolant temperature gauge is in the red
zone (H). In this case, immediately stop the vehicle in a safe place, and check the
engine after it has cooled completely. (P. 5 0 6 )

1173-2. Opening, closing and locking the doors and trunk
3
Operation of each component
IS350/250_U (OM53C50U)
■Note for the entry function
●Even when the electronic key is within the effective range (detection areas), the system
may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near the
ground, or in a high place when the doors are locked or unlocked.
• The electronic key is near the ground or in a high place, or too close to the rear
bumper center when the trunk is opened.
• The electronic key is on the instrument pa nel, rear package tray or floor, or in the
door pockets or glove box when the engine is started or engine switch modes are
changed.
●Do not leave the electronic key on top of th e instrument panel or near the door pockets
when exiting the vehicle. Depending on the radio wave reception conditions, it may be
detected by the antenna outside the cabin and the doors will become lockable from the
outside, possibly trapping the el ectronic key inside the vehicle.
●As long as the electronic key is within the effective range, the doors may be locked or
unlocked by anyone. However, only the door s detecting the electronic key can be used
to unlock the vehicle.
●Even if the electronic key is not inside the vehicle, it may be possible to start the engine
if the electronic key is near the window.
●The doors may unlock or lock if a large amou nt of water splashes on the door handle,
such as in the rain or in a car wash, when th e electronic key is within the effective range.
(The doors will automatically be locked af ter approximately 30 seconds if the doors
are not opened and closed.)
●If the wireless remote control is used to lo ck the doors when the electronic key is near
the vehicle, there is a possibility that the door may not be unlocked by the entry func-
tion. (Use the wireless remote control to unlock the doors.)
●Touching the door lock or unlock sensor while wearing gloves may prevent lock or
unlock operation.
●When the lock operation is performed using the lock sensor, recognition signals will be
shown up to two consecutive times. After this, no recognition signals will be given.
●If the door handle becomes wet while the el ectronic key is within the effective range,
the door may lock and unlock repeatedly. In this case, follow the following correction
procedures to wash the vehicle:
• Place the electronic key in a location 6 ft. (2 m) or more away from the vehicle. (Take
care to ensure that the key is not stolen.)
• Set the electronic key to battery-saving mode to disable the smart access system with push-button start. ( P. 1 1 5 )
●If the electronic key is insi de the vehicle and a door handle becomes wet during a car
wash, a message may be shown on the mult i-information display and a buzzer will
sound outside the vehicle. To turn off the alarm, lock all the doors.
●The lock sensor may not work properly if it comes into contact with ice, snow, mud, etc.
Clean the lock sensor and attempt to operate it again, or use the lock sensor on the
lower part of the door handle.
●A sudden handle operation or a handle operation immediately after entering the effec-
tive range may prevent the doors from bein g unlocked. Touch the door unlock sensor
and check that the doors are unlocked before pulling the door handle again.
●Unlocking the vehicle may take more time if another electronic key is within the effec-
tive range.

1243-3. Adjusting the seats
IS350/250_U (OM53C50U)
Your preferred driving position (the posi tion of the driver’s seat, steering wheel
and outside rear view mirrors) can be recorded and recalled by pressing a but-
ton.
Three different driving positions can be recorded into memory.
■Recording procedure
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Adjust the driver’s seat, steering wheel, and outside rear view mirrors to the
desired positions.
While pressing the “SET” button,
or within 3 seconds after the
“SET” button is pressed, press
button “1”, “2” or “3” until the
buzzer sounds.
If the selected button has already
been preset, the previously recorded
position will be overwritten.
■Recall procedure
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Press one of the buttons for the
driving position you want to recall
until the buzzer sounds.
Driving position memory
1
2
3
4
1
2
3