lights Lexus IS300h 2013 Repair Manual

4897-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
Outer foot lights
Press the upper part of the out-
side rear view mirror to tilt the
mirror face upward, and apply
protective tape to the lower
part of the mirror cover.
Insert 2 flathead screwdrivers
wrapped in protective tape,
and disconnect the tabs behind
the mirror.
Pry the mirror out toward you,
disconnecting the tabs 2 at a time.
Work carefully, ensuring that you
do not drop the mirror.
Disconnect the connectors
behind the mirror, and remove
the mirror.
When removing the thin connec-
tors, make sure to mark one of the
connectors with a piece of tape, to
avoid mixing them up when rein-
stalling.
Work carefully, ensuring that you
do not drop the mirror.
When handling the mirror, do not
touch the parts applied with
grease.
The number of connectors
equipped differs by vehicle speci-
fication.
1
2
3

4937-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Headlights
Front position lights and daytime running lights
LED front fog lights (if equipped)
Side turn signal lights
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), halogen front fog
lights (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 fol-
lowing 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 removed with a large amount of washer
fluid contained in the washer tank, washer fluid may spill onto the vehicle and
cleaning may be required.
When replacing light bulbs
P. 478

4947-3. Do-it-yourself maintenance
IS300h_EE(OM53B95E)
CAUTION
Replacing light bulbs
Turn off the lights. Do not attempt to replace the bulb immediately after turn-
ing 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
unavoidable 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 the headlight unit. This may
damage the headlights 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 head-
lights 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 components at the rear of the head-
light assembly will be extremely hot. To
prevent burns, do not touch these metal
components until you are certain they
have cooled down.
Metal components

4957-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
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.

5078-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
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 necessarily 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 quali-
fied and equipped professional. Continuing to drive the
vehicle may be dangerous.
Brake system warning light
Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
Have the vehicle inspected by any authorized Lexus dealer
or repairer, or another duly qualified and equipped profes-
sional immediately.
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 quali-
fied and equipped professional.
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The emission control system (if equipped);
• The electronic engine control system; or
• The electronic throttle control system
Have the vehicle inspected by any authorized Lexus dealer
or repairer, or another duly qualified and equipped profes-
sional immediately.

5098-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
Automatic headlight leveling system warning light
Indicates a malfunction in the automatic headlight leveling
system
Have the vehicle inspected by any authorized Lexus dealer
or repairer, or another duly qualified and equipped profes-
sional immediately.
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 (warn-
ing 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 passen-
ger’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
malfunction.
P. 5 1 4
Warning lightWarning light/Details/Actions

5128-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute
when the power switch is turned to 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 usual when operating, hold firmly
and operate 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 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
adjustment, 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.
Vehicles with run-flat tires
Decelerate to the lowest appropriate speed as soon as possible. Do not drive
over 60 km/h (37 mph).
Check and adjust the tire inflation pressure immediately.
If the tire pressure warning light comes on even after tire inflation pressure
adjustment, it is probable that you have a flat tire. Have the tire replaced 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.
If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

5148-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
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 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:
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

5218-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
Indicates that the power 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 power 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 power 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 power switch off, and the
driver’s door open)
A buzzer also sounds.
Close all the windows and the moon roof.
Indicates a malfunction in the brake override sys-
tem
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Indicates that engine oil level is low
A buzzer also sounds.
Check the level of engine oil, and add if neces-
sary.
Indicates that the hybrid system has overheated
This message may be displayed when driving
under severe operating conditions. (For example,
when driving up a long steep hill.)
A buzzer also sounds.
Stop and check. (P. 556)
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)

5238-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
(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 operation is stopped
Turn the VSC on. (P. 295)
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is
not currently functional because the grille cover or
the sensor is dirty
Check the grille cover and the sensor and clean
them if they are dirty.
Indicates that operation of large electricity consum-
ing systems such as the air conditioning system are
suspended
Stop using unnecessary electric components to
reduce electricity consumption. Wait a while
until the electric power supply is restored.
(If equipped)
Indicates that the LDA (Lane Departure Alert) sys-
tem cannot be used because the vehicle speed is
lower than approximately 50 km/h (32 mph)
Drive the vehicle at 50 km/h (32 mph) or higher.
Warning messageDetails/Actions
(Flashes)