lights Lexus IS200t 2015 Repair Manual

4857-3. Do-it-yourself maintenance
7
Maintenance and care
IS200t_EE(OM53D19E)
■Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped profes-
sional.
●Headlights
●Front position lights and daytime running lights
●Side turn signal lights
●Front fog lights (if equipped)
●Stop/tail lights
●Tail lights
●Rear fog light
●High mounted stoplight
●License plate lights
■Discharge headlights (if equipped)
If voltage to the discharge bulbs is insufficient, the bulbs may not come on, or may go out
temporarily. The discharge bulbs will come on when normal power is restored.
■LED Lights
The lights other than the discharge headlights (if equipped), front turn signal lights, rear
turn signal lights, back-up light and outer foot lights each consist of a number of LEDs. If
any of the LEDs burn out, take your vehicle to any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional to have the light replaced.
■Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not indicate a
malfunction. Contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional for more information in the following situations:
●Large drops of water have built up on the inside of the lens.
●Water has built up inside the headlight.
■When replacing the front turn signal lights (vehicles with LED headlights)
When the washer fluid filler opening is remove d with a large amount of washer fluid con-
tained in the washer tank, washer fluid may spill onto the vehicle and cleaning may be
required.
■When replacing light bulbs
→ P. 4 7 2

4867-3. Do-it-yourself maintenance
IS200t_EE(OM53D19E)
CAUTION
■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 bu lb 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 water entering th e headlight unit. This may damage the head-
lights or cause condensation to build up on the lens.
■Discharge headlights (if equipped)
●Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional before replacing the discharge headlights (including light
bulbs).
●Do not touch the discharge headlight’s high voltage socket when the headlights are
turned on.
An extremely high voltage of 30000 V will be discharged and could result in death
or serious injury by electric shock.
●Do not attempt to take apart or repair the headlight bulbs, connectors, power supply
circuits, or related components.
Doing so could result in electric shock and death or serious injury.
■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.
●Vehicles with discharge headlights: While the
headlights are turned on, and for a short time
after they have been turned off, metal compo-
nents at the rear of the headlight assembly will
be extremely hot. To prevent burns, do not
touch these metal components until you are
certain they have cooled down.
Metal components

4877-3. Do-it-yourself maintenance
7
Maintenance and care
IS200t_EE(OM53D19E)
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.

5008-2. Steps to take in an emergency
IS200t_EE(OM53D19E)
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 dealer or repairer, or
another duly qualified and equipped professional.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light (warning buzzer)*1
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 dealer or repairer, or another duly qualified
and equipped professional. Continuing to drive the vehicle may
be dangerous.
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 dealer or repairer, or another duly qualified
and equipped professional.
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 any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
→ Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.

5028-2. Steps to take in an emergency
IS200t_EE(OM53D19E)
*1: Parking brake engaged warning buzzer:→ P. 5 0 9
*2: Open door warning buzzer:
→ P. 5 0 8
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 a pproximately 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 passenger 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 warning system has detected a malfunc-
tion.
→ P. 5 0 6
(If equipped)
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes ( →P. 5 0 3 )
• Flat tire ( →P. 5 2 2 , 5 3 3 )
→ Adjust the tire inflation pre ssure 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 dealer or repairer, or
another duly qualified and equipped professional.
When the light comes on af ter blinking for 1 minute:
Malfunction in the tire pressure warning system
→ Have the system checked by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.

5048-2. Steps to take in an emergency
IS200t_EE(OM53D19E)
■If the tire pressure warning light frequently comes on after blinking for 1 minute (if
equipped)
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
engine switch is turned to IGNITION ON mode, have it checked by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.
CAUTION
■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 dealer
or repairer, or another duly qualified and equipped professional. 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.
If the steering wheel becomes heavier than us ual when operating, hold firmly and oper-
ate using more force than usual.
■If the tire pressure warning light comes on (if equipped)
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.
XVehicles 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
dealer or repairer, or another duly qualified and equipped professional.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
XVehicles 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 the 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.

5068-2. Steps to take in an emergency
IS200t_EE(OM53D19E)
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 Lexu s dealer or repairer, or another duly
qualified and equipped professional.
If a warning message is displayed
If a warning is shown on the multi-information display, stay calm and perform
the following actions:
XExcept F SPORT modelsXF SPORT models (when the main
meter is in the center position)
XF SPORT models (when the main
meter is in the right-side position)
1
2

5128-2. Steps to take in an emergency
IS200t_EE(OM53D19E)
Indicates a malfunction in the Pop Up Hood system
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
(If equipped)
Indicates a malfunction in the Stop & Start system
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the engine was stopped while driving
A 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.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)

5148-2. Steps to take in an emergency
IS200t_EE(OM53D19E)
Indicates that the TRC (Traction Control) system has
been deactivated
→ Tu r n t h e T R C o n . ( →P. 2 8 7 )
Indicates that the engine oil is scheduled to be changed.
(The indicator will not work properly unless the message
has been reset.)
→ Check the engine oil, and change if necessary.
After changing the engine oil, the message should
be reset.
(If equipped)
Indicates that the fuel in jectors require maintenance
soon
→ Have any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional
add injector cleaner to the fuel tank and reset the
message as necessary.
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 dealer or repairer, or another
duly qualified and equipped professional. After
changing the engine oil, the message should be
reset.
(If equipped)
Indicates that the fuel injectors require maintenance
→ Have any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional
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-crash brake system oper-
ation is stopped
→Tu r n t h e V S C o n . ( →P. 2 8 8 )
Wa r n i n g m e s s a g eDetails/Actions

5478-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D19E)
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(→ P. 1 9 6 )
●There may be a malfunction in the engine immobilizer system.
(→ P. 77)
One of the following may be the cause of the problem:
●The battery terminal connections may be loose or corroded.
●The battery may be discharged. ( →P. 5 5 3 )
The engine starting system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However, an interim
measure is available to start the engine. ( →P. 5 4 8 )
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed ( →P. 196), consider each of the following points:
The engine will not start even thou gh the starter motor operates nor-
mally.
The starter motor turns over slowly , the interior lights and headlights
are dim, or the horn does not so und or sounds at a low volume.
The starter motor does not turn over