2017 LEXUS LS600H Owners Manual

3214-5. Using the driving support systems
4
Driving
LS600h/LS600hL_EE(OM50G20E)
CAUTION
■To avoid inadvertent dynamic radar cruise control with full-speed range activa-
tion
Switch the cruise control off using the “ON•OFF” button when not in use.
■Situations unsuitable for dynamic rada r cruise control with full-speed range
Do not use dynamic radar cruise control with full-speed range in any of the follow-
ing situations.
Doing so may result in inappropriate speed control and could cause an accident
resulting in death or serious injury.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as those covered with rain, ice or snow
●On steep downhills, or where there are sudden changes between sharp up and
down gradients
Vehicle speed may exceed the set speed when driving down a steep hill.
●At entrances to expressways
●When weather conditions are bad enough that they may prevent the sensors
from functioning correctly (fog, sn ow, sandstorm, heavy rain, etc.)
●When an approach warning buzzer is heard often

3224-5. Using the driving support systems
LS600h/LS600hL_EE(OM50G20E)
CAUTION
■When the sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles are in
front of you.
As the sensor may not be able to correctly detect these types of vehicles, the
approach warning ( P. 314) will not be activated, and a fatal or serious accident
may result.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving
●Vehicles with small rear ends (trailers with no load on board etc.)
●Motorcycles traveling in the same lane
■Conditions under which the vehicle-to-veh icle distance control may not function
correctly
Apply the brakes as necessary in the following conditions as the radar sensor may
not be able to correctly detect vehicles ahead, and a fatal or serious accident may
result:
●When water or snow thrown up by the surrounding vehicles hinders the function-
ing of the sensor
●When your vehicle is pointing upwards (caused by a heavy load in the trunk etc.)
●When the road curves or when the lanes are narrow
●When steering wheel operation or your position in the lane is unstable
●When the vehicle ahead of you decelerates suddenly

3234-5. Using the driving support systems
4
Driving
LS600h/LS600hL_EE(OM50G20E)
CAUTION
■Handling the radar sensor
Observe the following to ensure the cruise control system can function effectively.
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 damage
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.
●If the radar sensor needs to be replaced, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.

3244-5. Using the driving support systems
LS600h/LS600hL_EE(OM50G20E)
While driving on a freeway or motor highway that has lane markers and
no sharp curves, the system recognizes the lanes using a camera located
above the inside rear view mirror as a sensor to assist the driver with stay-
ing in the lane. The LKA system has two functions.
Camera sensor
LKA (Lane-Keeping Assist)
: If equipped
Summary of functions

3254-5. Using the driving support systems
4
Driving
LS600h/LS600hL_EE(OM50G20E)
Lane departure warning function
If the system judges that the vehicle may deviate from its lane, it alerts
the driver using rapid beeping, indications on the multi-information dis-
play, and a sensory warning* given via the steering wheel.
*: A slight steering torque is applied for a short period of time in the direction of the
center of the lane.
Lane keeping assist function
• This function will be active when the vehicle-to-vehicle distance con-
trol mode of the dynamic radar crui se control with full-speed range
( P. 307) is set with vehicle speed above approximately 72 km/h
(45 mph) and while the lane departure warning function is active.
• When the lane keeping assist function is active, a slight steering
torque will be applied, to help th e driver maintain the vehicle inside
the lane.
The lane keeping assist function will be temporarily canceled if the steering
wheel is not operated, or if you continue driving with your hands lightly touch-
ing the steering wheel. ( P. 329)
Functions included in the LKA
1
2

3264-5. Using the driving support systems
LS600h/LS600hL_EE(OM50G20E)
Press the LKA switch to activate the
system.
LKA indicator will come on.
Press the switch again to turn the LKA
system off.
The LKA system will revert to off each
time the power switch is turned to ON
mode.
Turning the LKA system on

3274-5. Using the driving support systems
4
Driving
LS600h/LS600hL_EE(OM50G20E)
■Lane departure warning function
●When the vehicle speed is approximately 48 km/h (30 mph) or
more
●When the lane width is more than approximately 3.0 m (9.8 ft.)
●When driving on a straight road or through a curve with a radius of
more than approximately 120 m (394 ft.)
■Lane keeping assist function
●When the vehicle speed is between approximately 72 and 180 km/h
(45 and 112 mph)
●When the vehicle-to-vehicle distance mode of the dynamic radar
cruise control with full-speed range is on, and the set vehicle speed is
approximately 72 km/h (45 mph) or more (the function will not
operate when the dynamic radar crui se control with full-speed range
is in set speed mode)
●When the lane width is between approximately 3.0 and 4.0 m
(9.8 and 13.1 ft.)
●When driving on a straight road or through a curve with a radius of
more than approximately 200 m (656 ft.)
Operating conditions for each function

3284-5. Using the driving support systems
LS600h/LS600hL_EE(OM50G20E)
When the LKA system is on, the lane line display and steering wheel dis-
play are shown.
Lane keeping assist function
operation indication
Steering wheel displayed:
Indicates that the function is currently
operating. (If the lane departure warn-
ing operates at this time, the steering
wheel flashes orange.)
Steering wheel not displayed:
Indicates that the function is not cur-
rently operating. (When the lane
keeping assist function is canceled,
the buzzer will beep twice.)
Dynamic radar cruise control
with full-speed range display
Lane departure warning function
indication (when the inside of the
white line is white):
The function has recognized lane
markers. (If the lane departure warn-
ing operates at this time, the lines flash
orange.)
Lane departure warning function
indication (when the inside of the
white line is black):
A lane marker is not recognized by
the system, or the LKA system func-
tions are temporarily canceled.
Indication on the multi-information display
1
2
3
4