light Lexus IS300h 2013 Manual Online

2864-5. Using the driving support systems
IS300h_EE(OM53B95E)
If you notice any symptoms
If you notice any of the following symptoms, refer to the likely cause
and the solution, and re-check.
If the symptom is not resolved by the solution, have the vehicle
inspected by any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
Things you should know
Likely causeSolution
The image is difficult to see
• The vehicle is in a dark area
• The temperature around the lens is
either high or low
• The outside temperature is low
• There are water droplets on the
camera
• It is raining or humid
• Foreign matter (mud etc.) is adher-
ing to the camera
• There are scratches on the camera
• Sunlight or headlights are shining
directly into the camera
• The vehicle is under fluorescent
lights, sodium lights, mercury lights
etc.
If this happens due to these causes, it
does not indicate a malfunction.
Back up while visually checking the
vehicle’s surroundings. (Use the mon-
itor again once conditions have been
improved.)
To adjust the image on the rear view
monitor system screen. (P. 329)
The image is blurry
Dirt or foreign matter (such as water
droplets, snow, mud etc.) is adhering
to the camera.Rinse the camera lens with water and
wipe it clean with a soft cloth.
Wash with a mild soap if the dirt is
stubborn.
The image is out of alignment
The camera or surrounding area has
received a strong impact.
Have the vehicle inspected by any
authorized Lexus dealer or repairer, or
another duly qualified and equipped
professional.
The fixed guide lines are very far out of alignment
• The vehicle is tilted (there is a
heavy load on the vehicle, tire pres-
sure is low due to a tire puncture,
etc.)
• The vehicle is used on an incline.If this happens due to these causes, it
does not indicate a malfunction. Back
up while visually checking the vehi-
cle’s surroundings.

2894-5. Using the driving support systems
4
Driving
IS300h_EE(OM53B95E)
NOTICE
How to use the camera
The rear view monitor system may not operate properly in the following
cases.
• If the back of the vehicle is hit, the position and mounting angle of the
camera may change.
• As the camera has a water proof construction, do not detach, disassemble
or modify it. This may cause incorrect operation.
• Do not strongly rub the camera lens. If the camera lens is scratched, it can-
not transmit a clear image.
• Do not allow organic solvent, car wax, window cleaner or glass coat to
adhere to the camera. If this happens, wipe it off as soon as possible.
• If the temperature changes rapidly, such as when hot water is poured on the
vehicle in cold weather, the system may not operate normally.
• When washing the vehicle, do not apply intensive bursts of water to the
camera or camera area. Doing so may result in the camera malfunctioning.
• When the camera is used under fluorescent lights, sodium light or mercury
light etc., the lights and the illuminated areas may appear to flicker.
Do not expose the camera to strong impact as this could cause a malfunction.
If this happens, have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional as soon as possi-
ble.

2944-5. Using the driving support systems
IS300h_EE(OM53B95E)
Adaptive Variable Suspension System (if equipped)
By independently controlling the damping force of the shock absorbers
for each of the 4 wheels according to the road and driving conditions,
this system helps riding comfort with superior steering stability, and
helps good vehicle posture (P. 291)
VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the ABS, brake assist, TRC, VSC, hill-
start assist control, and EPS systems
Helps to maintain vehicle stability when swerving on slippery road sur-
faces by controlling the brakes and hybrid system output
PCS (Pre-Crash Safety system) (if equipped)
P. 2 9 9
Emergency brake signal
When the brakes are applied suddenly, the stop lights automatically
flash to alert the vehicle behind
BSM (Blind Spot Monitor) (if equipped)
P. 3 0 9
The slip indicator light will flash
while the TRC/VSC/ABS systems
are operating.
When the TRC/VSC/ABS systems are operating

2954-5. Using the driving support systems
4
Driving
IS300h_EE(OM53B95E)
If the vehicle gets stuck in fresh snow or mud, the TRC and VSC systems
may reduce power from the hybrid system to the wheels. Pressing VSC
OFF switch to turn the system off may make it easier for you to rock the
vehicle in order to free it.
Turning off the TRC system only
To turn the TRC system off,
quickly press and release the
switch.
The “TRC OFF” will be shown
on the multi-information display.
Press the switch again to turn the
system back on.
Turning off both TRC and VSC systems
To turn the TRC and VSC sys-
tems off, press and hold the
switch for more than 3 seconds
while the vehicle is stopped.
The VSC OFF indicator light will
come on and the “TRC OFF” will
be shown on the multi-informa-
tion display.
*
Press the switch again to turn the
systems back on.
*: On vehicles with pre-crash safety system, pre-crash brake assist and pre-
crash braking will also be disabled. The pre-crash safety system warning
light will come on and the message will be shown on the multi-information
display. (P. 299)
Disabling the TRC/VSC systems

2984-5. Using the driving support systems
IS300h_EE(OM53B95E)
CAUTION
The ABS does not operate effectively when
The limits of tire gripping performance have been exceeded (such as exces-
sively worn tires on a snow covered road).
The vehicle hydroplanes while driving at high speed on wet or slick roads.
Stopping distance when the ABS is operating may exceed that of normal condi-
tions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you, especially in the fol-
lowing situations:
When driving on dirt, gravel or snow-covered roads
When driving with tire chains
When driving over bumps in the road
When driving over roads with potholes or uneven surfaces
TRC may not operate effectively when
Directional control and power may not be achievable while driving on slippery
road surfaces, even if the TRC system is operating.
Drive the vehicle carefully in conditions where stability and power may be lost.
Hill- start assist control does not operate effectively when
Do not overly rely on hill-start assist control. Hill-start assist control may not
operate effectively on steep inclines and roads covered with ice.
Unlike the parking brake, hill-start assist control is not intended to hold the
vehicle stationary for an extended period of time. Do not attempt to use hill-
start assist control to hold the vehicle on an incline, as doing so may lead to an
accident.
When the VSC is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may
cause an accident. Exercise particular care when the indicator light flashes.
When the TRC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road conditions. As
these are the systems to ensure vehicle stability and driving force, do not turn
the TRC/VSC systems off unless necessary.
Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and total
load capacity. In addition, make sure that the tires are inflated to the recom-
mended tire inflation pressure level.
The ABS, TRC and VSC systems will not function correctly if different tires
are installed on the vehicle.
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional for further information when replacing tires or wheels.
Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect
the driving assist systems, and may cause a system to malfunction.

2994-5. Using the driving support systems
4
Driving
IS300h_EE(OM53B95E)
Pre-crash warning
When a high possibility of a fron-
tal collision is detected, the pre-
crash safety system warning light
flashes, a buzzer sounds and a
message is shown on the multi-
information display to urge the
driver to take evasive action.
Pre-crash brake assist
When there is a high possibility of a frontal collision, the system
applies greater braking force in relation to how strongly the brake
pedal is depressed. The system may not warn the driver using a warn-
ing light, warning display and buzzer when the system detects and
judges braking operations.
Pre-crash braking
When there is a high possibility of a frontal collision, the system warns
the driver using a warning light, warning display and buzzer. If the sys-
tem determines that a collision is unavoidable, the brakes are automati-
cally applied to reduce the collision speed.
Suspension control (vehicles with Adaptive Variable Suspension Sys-
tem)
PCS (Pre-Crash Safety system)

: If equipped
When the radar sensor detects the possibility of a frontal collision, brakes
are automatically engaged to lessen impact as well as vehicle damage.
The pre-crash safety system can be turned on and off as necessary by
operating the switch. (P. 301)

3014-5. Using the driving support systems
4
Driving
IS300h_EE(OM53B95E)
Enabled
Disabled
The pre-crash safety system warning
light comes on when pre-crash
safety system is disabled.
The radar sensor detects vehicles or
other obstacles on or near the road
ahead and determines whether a
collision is imminent based on the
position, speed, and heading of the
obstacles.
Disabling pre-crash safety system
1
2
Radar sensor

3034-5. Using the driving support systems
4
Driving
IS300h_EE(OM53B95E)
Obstacles not detected
The sensor cannot detect plastic obstacles such as traffic cones. There may also
be occasions when the sensor cannot detect pedestrians, animals, bicycles,
motorcycles, trees, or snowdrifts.
Situations in which the pre-crash safety system does not function properly
The system may not function effectively in situations such as the following:
On roads with sharp bends or uneven surfaces
If a vehicle suddenly moves in front of your vehicle, such as at an intersection
If a vehicle suddenly cuts in front of your vehicle, such as when overtaking
In inclement weather such as heavy rain, fog, snow or sand storms
If the vehicle is skidding when VSC is not operating
When an extreme change in vehicle height occurs
When only part of your vehicle’s front end collides with, or contacts, a vehicle
or object in a frontal collision
When the radar sensor moves off position due to its surrounding area being sub-
jected to a strong impact
Automatic cancelation of the pre-crash safety system
When a malfunction occurs due to sensor contamination, etc. that results in the
sensors being unable to detect obstacles, the pre-crash safety system will be auto-
matically disabled. In this case, the system will not activate even if there is a col-
lision possibility.
When there is a malfunction in the system
The pre-crash safety system warning light will flash and warning messages will
be displayed. (P. 508, 519)

3084-5. Using the driving support systems
IS300h_EE(OM53B95E)
Limitations of the pre-crash safety system
Do not overly rely on the pre-crash safety system. Always drive safely, taking
care to observe your surroundings and checking for any obstacles or other road
hazards.
Failure to do so may cause an accident resulting in death or serious injury.
Handling the radar sensor
Observe the following to ensure the pre-crash safety system can function effec-
tively. Otherwise, the system may not function correctly and could result in an
accident.
Keep the sensor and grille cover clean at all times.
Clean the sensor and grille cover with a soft cloth so you do not mark or dam-
age them.
Do not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may malfunction. If
the sensor or surrounding area is subject to a strong impact, always have the
area inspected and adjusted by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Do not disassemble the sensor.
Do not attach accessories or stickers to the sensor, grille cover or surrounding
area.
Do not modify or paint the sensor and grille cover.
Do not replace them with non-genuine parts.
Cautions regarding the assist contents of the system
By means of alarms and brake control, the pre-crash safety system is intended
to assist the driver in avoiding collisions through the process of LOOK-
JUDGE-ACT. There are limits to the degree of assistance the system can pro-
vide, so please keep in mind the following important points.
Assisting the driver in watching the road
The pre-crash safety system is only able to detect obstacles directly in front of
the vehicle, and only within a limited range. It is not a mechanism that allows
careless or inattentive driving, and it is not a system that can assist the driver
in low-visibility conditions. It is still necessary for the driver to pay close
attention to the vehicle’s surroundings.
Assisting the driver in making correct judgment
When attempting to estimate the possibility of a collision, the only data avail-
able to the pre-crash safety system is that from obstacles it has detected
directly in front of the vehicle. Therefore, it is absolutely necessary for the
driver to remain vigilant and to determine whether or not there is a possibility
of collision in any given situation.
Assisting the driver in taking action
The pre-crash safety system’s braking assist feature is designed to help reduce
the severity of a collision, and so only acts when the system has judged that a
collision is unavoidable. This system by itself is not capable of automatically
avoiding a collision or bringing the vehicle to a stop safely. For this reason,
when encountering a dangerous situation the driver must take direct and
immediate action in order to ensure the safety of all involved.

3104-5. Using the driving support systems
IS300h_EE(OM53B95E)
The outside rear view mirror indicators visibility
When under strong sunlight, the outside rear view mirror indicator may be diffi-
cult to see.
Rear Crossing Traffic Alert buzzer hearing
Rear Crossing Traffic Alert function may be difficult to hear over loud noises
such as high audio volume.
When there is a malfunction in the Blind Spot Monitor
If a system malfunction is detected due to any of the following reasons, warning
messages will be displayed: (P. 518, 519)
There is a malfunction with the sensors
The sensors have become dirty
The outside temperature is extremely high or low
The sensor voltage has become abnormal
Certification for the Blind Spot Monitor
For vehicles sold in Russia
type approval number : POCC DE.ML05.H01144
For vehicles sold in Ukraine
type approval number : UA1.155.0029691-12