warning lights Lexus IS200t 2017 s Owner's Guide

5417-3. Do-it-yourself maintenance
7
Maintenance and care
IS200t_EE(OM53D77E)
WARNING
■Replacing light bulbs
●Turn off the lights. Do not attempt to replace the bulb immediately after turning off the
lights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. When it is unavoid-
able to hold the glass portion, use and hold with a clean dry cloth to avoid getting
moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failure to do so may result
in heat damage, fire, or wate r entering the headlight unit. This may damage the head-
lights or cause condensation to build up on the lens.
■To prevent damage or fire
●Make sure bulbs are fully seated and locked.
●Check the wattage of the bulb before installing to prevent heat damage.
NOTICE
■When replacing the outer foot lights
If the front window is stopping you from conducting the replace operation properly,
open the window on the side you are working on to allow you enough space to work.
Continuing the operation without giving yourself enough space to work could lead you
to scratch the vehicle.

5548-2. Steps to take in an emergency
IS200t_EE(OM53D77E)
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by any authorized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and contact any
authorized Lexus retailer or Lexus authorized repairer, or any
reliable repairer. Continuing to drive the vehicle may be dan-
gerous.
(If equipped)
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and contact any
authorized Lexus retailer or Lexus authorized repairer, or any
reliable repairer.
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system
 Have the vehicle inspected by an y authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.
SRS warning light Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
 Have the vehicle inspected by an y authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

5578-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D77E)
*1: Parking brake engaged warning buzzer: P. 564
*2: Open door warning buzzer:
 P. 562
Warning lightWarning light/Details/Actions
Open door warning light (warning buzzer)*2
Indicates that a door or the trunk is not fully closed
 Check that all the doors and the trunk are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 10 L (2.6 gal., 2.2 Imp.
gal.) or less
 Refuel the vehicle.
Driver’s and front passenger’s seat belt reminder light (warning
buzzer)
*3
Warns the driver and/or front passe nger to fasten their seat belts
 Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s
seat belt also needs to be fastened to make the warning light
(warning buzzer) turn off.
Rear passengers’ seat belt reminder lights (warning buzzer)*3
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.
Master warning light
A buzzer sounds and the warning light comes on and flashes to
indicate that the master warnin g system has detected a malfunc-
tion.
 P. 560
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes ( P. 558)
• Flat tire ( P. 586, 601)
 Adjust the tire inflation pres sure to the specified level.
The light will turn off after a few minutes. In case the light does
not turn off even if the tire inflation pressure is adjusted, have the
system checked by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
When the light comes on af ter blinking for 1 minute:
Malfunction in the tire pressure warning system
 Have the system checked by an y authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.

5598-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D77E)
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized Lexus retailer
or Lexus authorized repairer, or any reliable repairer. The vehicle will become
extremely unstable during braking, and the ABS system may fail, which could cause an
accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
When steering wheel operations are heavier than usual, grip the steering wheel firmly
and operate it using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
Vehicles with a compact spare tire
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change it
with the spare tire and have the flat tire repaired by the nearest authorized Lexus
retailer or Lexus authorized repa irer, or any reliable repairer.
●Avoid abrupt maneuvering and braking. If th e vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
Vehicles with an emergency tire puncture repair kit
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, repair the
flat tire by using emergency tire puncture repair kit.
●Avoid abrupt maneuvering and braking. If th e vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
NOTICE
■To ensure the tire pressure warning system operates properly
Do not install tires with different specifications or makers, as the tire pressure warning
system may not operate properly.

5608-2. Steps to take in an emergency
IS200t_EE(OM53D77E)
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 any authorized Lexus retailer or Lexus authorized repairer,
or any reliable repairer.
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 modelsF 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

5738-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D77E)
Indicates that the engine was stopped while drivingA buzzer also sounds.
 Operate the steering wheel with more force than
usual.
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)

5778-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D77E)
Indicates that the engine oil should be changed. (After
the engine oil is changed and the message has been
reset.)
Check and change the engine oil, and oil filter by
any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer. After changing the
engine oil, the message should be reset.
(If equipped)
Indicates that the fuel injectors require maintenance
Have any authorized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer add injector
cleaner to the fuel tank and reset the message.
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
Turn the high beam on and press the Automatic
High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-collision braking and pre-
collision brake assist are stopped (The pre-collision
warning function will be operational)
 Turn the VSC on. ( P. 343)
Warning messageDetails/Actions

659Alphabetical index
IS200t_EE(OM53D77E)
DAB (Digital Audio Broadcast) .....378
Daytime running light system .......... 219
DefoggerOutside rear view mirrors............ 458
Rear window ....................................... 458
Windshield ........................................... 458
Differential ............................................... 637
Digital Audio Broadcast (DAB) .....378
Dimensions..............................................630
Display Drive information ................................ 103
Dynamic radar cruise control ..... 274
LDA (Lane Departure Alert
with steering control) ................... 264
Multi-information display .................. 97
Warning message............................ 560
Do-it-yourself maintenance ............. 495
Door courtesy lights Location..................................................465
Wattage..................................................639
Door lock
Doors ........................................................ 128
Smart entry & start system ............... 141
Wireless remote control .................. 122 Doors...........................................................128
Automatic door locking and
unlocking system ............................. 132
Door lock ................................................ 128
Open door warning buzzer .......... 129
Open door warning light .............. 557
Outside rear view mirrors .............. 173
Rear door child-protector ............. 132
Side windows .........................................177
Drive information .................................. 103
Driver’s and front passenger’s seat belt reminder light .................. 557
Driver’s seat position memory ........... 161
Drive-Start Control ...............................187
Driving ....................................................... 186 Break-in tips........................................... 187
Correct driving posture.....................34
Driving mode select switch.......... 338
Procedures.............................................186
Winter drive tips ................................ 346
Dynamic radar cruise control ..........274
D

661Alphabetical index
IS200t_EE(OM53D77E)
First-aid kit storage belt ..................... 472
Flat tireVehicles with a spare tire ............... 601
Vehicles with emergency tire puncture repair kit ................ 586
Floor mats ................................................... 32
Fluid Automatic transmission ..................636
Brake........................................................ 637
Washer .................................................. 508
Fog light .................................................... 225
Replacing light bulbs....................... 540
Switch ...................................................... 225
Follow me home system ..................... 219
Footwell light .......................................... 465 Wattage..................................................639
Front personal lights ............................ 466
Wattage..................................................639
Front position lights............................... 218
Light switch ............................................ 218
Replacing light bulbs....................... 540 Front seats ................................................. 157
Adjustment ............................................. 157
Cleaning ................................................ 490
Correct driving posture.....................34
Driving position memory ..................161
Head restraints ..................................... 166
Power easy access system...............161
Seat heaters.......................................... 464
Seat position memory .........................161
Seat ventilators ................................... 464
Front turn signal lights .......................... 216 Replacing light bulbs ....................... 535
Turn signal lever................................... 216
Wattage ................................................. 639
Fuel ............................................................. 234 Capacity................................................. 632
Fuel gauge ............................................... 93
Fuel pump shut off system ............ 553
Information............................................ 640
Refueling .................................................234
Type ............................................. 234, 632
Warning light....................................... 557
F

663Alphabetical index
IS200t_EE(OM53D77E)
IdentificationEngine........................................................631
Vehicle ......................................................631
Ignition switch (engine switch) ........204
Illuminated entry system .................... 466
Indicators.....................................................90
Initialization Engine oil maintenance data .......502
Moon roof .............................................. 183
Multi-information display .................107
Power windows....................................178
Tire pressure warning system ..................................................... 511
Inside door handle lights .................... 465
Inside rear view mirror .......................... 171
Instrument panel light control ............ 96
Intercooler ...............................................504
Intercooler coolant ............................. 503 Capacity .................................................635
Checking .............................................. 503
Preparing and checking
before winter .................................... 346
Interior lights ........................................... 466
Wattage..................................................639
Intrusion sensor and tilt sensor ..........84
ISOFIX rigid anchors............................. 65
Jack
Positioning the jack.......................... 498
Vehicle-equipped jack ......588, 602
Jack handle ..................................588, 602
Jam protection function Moon roof .............................................. 182
Power window ......................................178 Keyless entry
Smart entry & start system......................................... 128, 135
Wireless remote control ...... 128, 135
Keys.............................................................. 122
Battery-Saving Function .................. 142
Electronic key........................................ 122
Engine switch ...................................... 204
If the electronic key does not operate properly ..............................615
Key number plate ................................ 122
Keyless entry............................... 128, 135
Mechanical key .................................... 123
Replacing the battery .......................527
Warning buzzer................................... 129
Wireless remote control ................. 122
Knee airbags ............................................... 41
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