2010 Lexus HS250h cruise control

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2
When driving
2-4. Using other driving systems
Cruise control
: If equipped
Use the cruise control to maintain a set speed without depressing the
accelerator pedal.
Indicators
Cruise control switch
■ Setting the v
ehicle speed
Press the “ON-OFF” button to
activ
ate the cruise control.
Press the button again to deacti-
vate the cruise control.

203
2-4. Using other driving systems
2
When driving
■Cruise control can be set when
●The shift position is in D.
●Vehicle speed is above approximately 25 mph (40 km/h).
■Accelerating
The vehicle can be accelerated normally. After acceleration, the set speed
r

esumes.
■Automatic cruise control cancellation
Cruise control will stop maintaining the ve h
icle speed in any of the following situa-
tions.
●Actual vehicle speed falls more than approximately 10 mph (16 km/h) below the
preset vehicle speed. 
At this time, the memorized set speed is not retained.
●Actual vehicle speed is below approximately 25 mph (40km/h).
●VSC is activated.
■If the cruise control indicator light flashes
Press the “ON-OFF” button once to deactiv ate the s
ystem, and then press the but -
ton again to reactivate the system. 
If the cruise control speed cannot be set or i
f the cruise control cancels immediately
after being activated, there may be a malfun ction in the cruise control system. Have
the vehicle inspected by your Lexus dealer.

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2-4. Using other driving systems
CAUTION
■To avoid operating the cruise control by mistake
Switch the cruise control off using the “ON-OFF” button when not in use.
■Situations unsuitable for cruise control
Do not use cruise control in any of the following situations. 
Doing so may result in loss of 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 thos e covered with rain, ice or snow
●On steep hills
Vehicle speed may exceed the set speed when driving down a steep hill.

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2-4. Using other driving systems
2
When driving
Dynamic radar cruise control
: If equipped
Dynamic radar cruise control supplements conventional cruise control
with a vehicle-to-vehicle distance control. In vehicle-to-vehicle distance
control mode, the vehicle automatically accelerates or decelerates in
order to maintain a set following distance from vehicles ahead.
Indicators
Display
Set speed
ehicle-to-vehicle distance
button
Cruise control switch

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2-4. Using other driving systems
■Setting the vehicle speed (vehicle-to-vehicle distance control
mode)
Press the “ON-OFF” button to
activate the cruise control.
Press the button again to deacti-
vate the cruise control.
Accelerate or decelerate the
vehicle to the desired speed,
and push the lever down to set
the speed.
“SET” indicator will come on.

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2-4. Using other driving systems
■Changing the vehicle-to-vehicle distance
Pressing the button changes the
vehicle-to-vehicle distance as
follows:
Long
Medium
Short
The vehicle-to-vehicle distance
is set automatically to long
mode when the “POWER”
switch is turned to ON mode.
If a vehicle is running ahead of
y
ou, the preceding vehicle mark
will also be displayed.
■ Canceling and resuming the constant speed control
Pulling the lever toward you
cancels the cruise control.
The speed setting is also can -
celed when the brakes are
applied.
Pushing the lever up resumes
the cruise control and returns
v

ehicle speed to the set
speed.
Resuming is available when the
vehicle speed is more than
approximately 25 mph (40 km/
h).
Preceding vehicle mark

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2-4. Using other driving systems
2
When driving
Selecting conventional constant speed control mode
Dynamic radar cruise control can be used as conventional cruise control
if you select constant speed control mode.
Press the “ON-OFF” button to
activate the cruise control.
Press the button again to deacti-
vate the cruise control.
Vehicle-to-vehicle distance con -
trol mode is always reset when the
“PO
WER” switch is turned to ON
mode.
Switch to constant speed con -
trol mode. 
(Push the lever forward and
hold for appr
oximately one sec -
ond.)
Constant speed control mode indi-
cator will come on.
Adjusting the speed setting:

P. 2 0 7
Canceling and resuming the speed
se
tting:
P. 2 0 8

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2-4. Using other driving systems
■Dynamic radar cruise can be set when
●The shift position is in D.
●Vehicle speed is above approximately 30 mph (50 km/h).
■Switching modes
The mode cannot be switched to constant speed
control mode if vehicle-to-vehicle
distance control mode has been used. Th e mode also cannot be switched from
constant speed control to vehicle-to-vehic le distance control mode. Turn the sys-
tem off by pressing the “ON-OFF” bu
tton, and turn it on again.
■Accelerating
The vehicle can be accelerated normally. After acceleration, the set speed resume.
Ho

wever, during vehicle-to-vehicle distance control mode, the vehicle speed may
decrease below the set speed in order to maintain the distance to the vehicle
ahead.
■Automatic cancellation of vehicle-to-vehicle distance control
Vehicle-to-vehicle distance control driving is automatically canceled in the follow -
ing situations:
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●The sensor cannot operate correctly because it is covered in some way.
●The windshield wipers are operating at high speed.
If vehicle-to-vehicle distance control driving is automatically canceled for any other
r
eason, there may be a malfunction in the system. Contact your Lexus dealer.
■Automatic cancellation of constant speed control
The cruise control will stop maintaining the vehicle speed in the following situations:
●Actual vehicle speed is more than approximately 10 mph (16 km/h) below the
set vehicle speed.
At this time, the memorized set speed is not retained.
●Vehicle speed falls below approximately 25 mph (40 km/h).
VSC is activated.