check engine light Lexus IS250 2014 Owner's Manual

TABLE OF CONTENTS6
IS250_EE(OM53C51E)
7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .................404
Cleaning and protecting
the vehicle interior ................. 408
7-2. Maintenance
Maintenance
requirements................................ 411
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ................................. 413
Hood ................................................ 415
Positioning a floor jack .............. 416
Engine compartment..................417
Tires .................................................. 427
Tire inflation pressure................436
Wheels........................................... 438
Air conditioning filter................440
Electronic key battery .............. 442
Checking and replacing
fuses .............................................. 445
Light bulbs ..................................... 4498-1. Essential information
Emergency 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 (vehicles
with a spare tire) ...................... 496
If you have a flat tire
(vehicles without a
spare tire) ................................... 507
If the engine will not start ......... 521
If the shift lever cannot
be shifted from P ..................... 523
If the electronic key does
not operate properly ............. 524
If the vehicle battery is
discharged ................................. 527
If your vehicle overheats .......... 531
If the vehicle becomes
stuck.................................................534
7Maintenance and care8When trouble arises

13Pictorial index
IS250_EE(OM53C51E)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 215
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 288
To prevent freezing (windshield wiper de-icer)
*1. . . . . . . . . . . . . . . . . . . . . . . .P. 383
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 406
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 221
Refueling method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 2 2 1
Fuel type/fuel tank capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 540
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 427
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 546
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 288
Checking/rotation/tire pressure warning system
*1 . . . . . . . . . . . . . . . . . . . . . P. 427
Coping with flat tires. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 496, 507
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 415
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 415
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 541
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 531
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 484
Headlights/front position lights/daytime running lights . . . . . . . . . . . . P. 206
Front fog lights
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 213
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 203
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 206
Stop lights
Emergency brake signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 266
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 206
Rear fog light
*3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 213
Back up light
*2
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 197
Rear fog light*2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 213
Back up light
*3
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 197
4
5
6
7
Light bulbs of the exterior lights for driving
(Replacing method: P. 449, Watts: P. 548)
*1: If equipped
*2: Left-hand drive vehicles
*3: Right-hand drive vehicles
8
9
10
11
12
13
14
15

761-1. For safe use
IS250_EE(OM53C51E)
Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if inhaled.
CAUTION
Exhaust gases include harmful carbon monoxide (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 even when the trunk lid is closed, open the
windows and have the vehicle inspected at any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional 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 while 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 any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.

912. Instrument cluster
2
Instrument cluster
IS250_EE(OM53C51E)
Warning lights inform the driver of malfunctions in the indicated vehicle systems.
*1: These lights turn on when the engine switch is turned to IGNITION ON mode to
indicate that a system check is being performed. They will turn off after the engine is
on, or after a few seconds. There may be a malfunction in a system if the lights do not
come on, or turn off. Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
*2: The light flashes to indicate a malfunction.
*3: This light illuminates on the center panel.
Wa r n i n g l i g h t s
*1Brake system warning light
(→P. 4 76 )*1 Automatic headlight level-
ing system warning light
(→P. 477)
*1Charging system warning
light (→P. 4 76 )Open door warning light
(→P. 4 7 8 )
*1Malfunction indicator
lamp (→P. 4 76 )Low fuel level warning light
(→P. 4 7 8 )
*1SRS warning light
(→P. 4 76 )Driver’s and front passen-
ger’s seat belt reminder light
(→P. 4 7 8 )
*1ABS warning light
(→P. 477)*3Rear passengers’ seat belt
reminder lights (→P. 4 7 8 )
*1Electric power steering sys-
tem warning light
(→P. 477)*1Master warning light
(→P. 4 7 8 )
*1, 2
(if equipped)
Pre-crash safety system
warning light (→P. 477)
*1
(if equipped)
Tire pressure warning light
(→P. 4 7 8 )
*1Slip indicator
(→P. 477)

932. Instrument cluster
2
Instrument cluster
IS250_EE(OM53C51E)
*1: These lights turn on when the engine switch is turned to IGNITION ON mode to
indicate that a system check is being performed. They will turn off after the engine is
on, or after a few seconds. There may be a malfunction in a system if the lights do not
come on, or turn off. Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
*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 illuminate
in 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 indicators do not illuminate or do not turn off,
there may be a malfunction in the system.
If this occurs, have the vehicle inspected by any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
*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 3°C (37°F) or lower, the indicator
will flash for approximately 10 seconds, then stay on.
*8:Except F SPORT models
*9:F SPORT models
*9Eco drive mode indicator
(→P. 2 6 3 )*8Snow mode indicator
(→P. 1 9 8 )
*8“SPORT” indicator
(→P. 2 6 3 )*9Snow mode indicator
(→P. 1 9 8 )
*9“SPORT” indicator
(→P. 2 6 3 )*1, 6“PASSENGER AIR
BAG” indicator
(→P. 5 2 )

1543-3. Adjusting the seats
IS250_EE(OM53C51E)
Each electronic key (including a card key) can be registered to recall your pre-
ferred driving position.
■Registering procedure
Record your driving position to button “1”, “2” or “3” before performing the
following:
Carry only the key you want to register, and then close the driver’s door. If 2 or
more keys are in the vehicle, the driving position cannot be recorded properly.
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Recall the driving position that you want to record.
While pressing the recalled but-
ton, press and hold the door lock
switch (either lock or unlock) until
the buzzer sounds.
If the button could not be registered,
the buzzer sounds continuously for
approximately 3 seconds.
■Recall procedure
Carry the electronic key that has been registered to the driving position,
and then unlock and open the driver’s door using the entry function or
wireless remote control.
The driving position will move to the recorded position (not including the steering
wheel). However, the seat will move to a position slightly behind the recorded posi-
tion in order to make entering the vehicle easier.
If the driving position is in a position that has already been recorded, the seat and
outside rear view mirrors will not move.
Turn the engine switch to ACCESSORY mode or IGNITION ON mode,
or fasten a seat belt.
The seat and steering wheel will move to the recorded position.
Memory recall function (driver’s side only)
1
2
3
4
1
2

1784-1. Before driving
IS250_EE(OM53C51E)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When starting the vehicle
Always keep your foot on the brake pedal while stopped with the engine running. This
prevents the vehicle from creeping.
■When driving the vehicle
●Do not drive if you are unfamiliar with the location of the brake and accelerator ped-
als to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake pedal will
result in sudden acceleration that may lead to an accident.
• When backing up, you may twist your body around, leading to a difficulty in oper-
ating the pedals. Make sure to operate the pedals properly.
• Make sure to keep a correct driving posture even when moving the vehicle only
slightly. This allows you to depress the brake and accelerator pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake pedal using
your left foot may delay response in an emergency, resulting in an accident.
●Do not drive the vehicle over or stop the vehicle near flammable materials.
The exhaust system and exhaust gases can be extremely hot. These hot parts may
cause a fire if there is any flammable material nearby.
●During normal driving, do not turn off the engine. Turning the engine off while driving
will not cause loss of steering or braking control, but the power assist to these systems
will be lost. This will make it more difficult to steer and brake, so you should pull over
and stop the vehicle as soon as it is safe to do so.
However, in the event of an emergency, such as if it becomes impossible to stop the
vehicle in the normal way: →P. 4 6 7
●Use engine braking (downshift) to maintain a safe speed when driving down a steep
hill.
Using the brakes continuously may cause the brakes to overheat and lose effective-
ness. (→P. 1 9 7 )
●Do not adjust the positions of the steering wheel, the seat, or the inside or outside rear
view mirrors while driving.
Doing so may result in a loss of vehicle control.
●Always check that all passengers’ arms, heads or other parts of their body are not
outside the vehicle.

1794-1. Before driving
4
Driving
IS250_EE(OM53C51E)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving on slippery road surfaces
●Sudden braking, acceleration and steering may cause tire slippage and reduce your
ability to control the vehicle.
●Sudden acceleration, engine braking due to shifting, or changes in engine speed
could cause the vehicle to skid.
●After driving through a puddle, lightly depress the brake pedal to make sure that the
brakes are functioning properly. Wet brake pads may prevent the brakes from func-
tioning properly. If the brakes on only one side are wet and not functioning properly,
steering control may be affected.
■When shifting the shift lever
●Do not let the vehicle roll backward while the shift lever is in a driving position, or roll
forward while the shift lever is in R.
Doing so may cause the engine to stall or lead to poor brake and steering perfor-
mance, resulting in an accident or damage to the vehicle.
●Do not shift the shift lever to P while the vehicle is moving.
Doing so can damage the transmission and may result in a loss of vehicle control.
●Do not shift the shift lever to R while the vehicle is moving forward.
Doing so can damage the transmission and may result in a loss of vehicle control.
●Do not shift the shift lever to D while the vehicle is moving backward.
Doing so can damage the transmission and may result in a loss of vehicle control.
●Moving the shift lever to N while the vehicle is moving will disengage the engine from
the transmission. Engine braking is not available when N is selected.
●Be careful not to shift the shift lever with the accelerator pedal depressed. Shifting the
shift lever to a gear other than P or N may lead to unexpected rapid acceleration of
the vehicle that may cause an accident and result in death or serious injury.
■If you hear a squealing or scraping noise (brake pad wear indicators)
Have the brake pads checked and replaced by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional as soon as possible.
Rotor damage may result if the pads are not replaced when needed.
Moderate levels of brake pad and disc wear allow enhanced braking power. As a
result, the discs may wear more quickly than conventional brake discs. Therefore, when
replacing the brake pads, Lexus recommends that you also have the thickness of the
discs measured.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or those
of the brake discs are exceeded.

1964-2. Driving procedures
IS250_EE(OM53C51E)
NOTICE
■To prevent battery discharge
●Do not leave the engine switch in ACCESSORY or IGNITION ON mode for long
periods of time without the engine running.
●If “ACCESSORY” or “IGNITION ON” is displayed on the meters while the engine is
not running, the engine switch is not off. Exit the vehicle after turning the engine
switch off.
●Do not stop the engine when the shift lever is in a position other than P. If the engine is
stopped in another shift lever position, the engine switch will not be turned off but
instead be turned to ACCESSORY mode. If the vehicle is left in ACCESSORY
mode, battery discharge may occur.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked
by any authorized Lexus dealer or repairer, or another duly qualified and equipped
professional immediately.
■Symptoms indicating a malfunction with the engine switch
If the engine switch seems to be operating somewhat differently than usual, such as the
switch sticking slightly, there may be a malfunction. Contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional immediately.

2044-2. Driving procedures
IS250_EE(OM53C51E)
■Turn signals can be operated when
The engine switch is in IGNITION ON mode.
■If the indicator flashes faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.
■If the turn signals stop flashing before a lane change has been performed
Operate the lever again.
■Customization
The number of times the turn signals flash during a lane change can be changed.
(Customizable feature →P. 5 5 1 )