2010 Lexus HS250h brake

157
2-1. Driving procedures
2
When driving
■Power mode automatic deactivation
Power mode is automatically deactivated if the “POWER” switch is turned off after
driving in power mode.
■Customization
Settings (e.g. Reverse warning buzzer) can be changed. 
(Customizable features  P. 5 7 2 )
CAUTION
■When driving on slippery road surfaces
Do not accelerate or shift gears suddenly. 
Sudden changes in engine braking may cause the vehicle to spin or skid, resulting in
an accident.
■For the shift lever
Do not hang anything on the shift lever. 
Doing so could prevent the shift lever fr om returning to position, causing unex-
pected accidents to occur when the vehicle is in motion.
NOTICE
■Situations where P position control system malfunctions are possible
If any of the following situations occurs, P position control system malfunctions are
possible. 
Immediately stop the vehicle in a safe place on level ground, apply the parking
brake, and then contact your Lexus dealer.
●When the “P Lock Malfunction” warnin g message appears on the multi-informa-
tion display. ( P. 5 0 2 )
●When the P position switch indicator flashes.
●When the shift position symb ols (such as P and R) are flashing on the shift posi-
tion indicator.
●When the shift position indicator remains off.
■When in heavy traffic
If shift position N is sele cted, the hybrid battery (traction battery) will not be
charged. To help prevent the battery from discharging, avoid leaving the N position
selected for an extended period of time.

160
2-1. Driving procedures
Parking brake
■Parking brake engaged warning buzzer
The buzzer sounds to indicate that parking b
rake is still engaged (with the vehicle
having reached a speed of 3 mph [5 km/h]). ( P. 5 0 6 )
NOTICE
■Before driving
Fully release the parking brake. 
Driving the vehicle with the parking brake set will lead to brake components over-
heating, which may affect braking performance and increase brake wear.
To set the parking brake, fully
depress the parking brake pedal
with your left foot while
depressing the brake pedal with
your right foot.

(Depressing the pedal again
r

eleases the parking brake.)
U.S.A.Canada

186
2-3. Operating the lights and windshield wipers
Press the “ENTER” switch to
change to OFF. 
The “AFS OFF” indicator will come
on.
Each pressing of the switch turns
AFS on and off.
Press the menu switch to change to
the norma
l display.
■Daytime running light system (if equipped)
To make your vehicle more visible to othe r dr
ivers, the headlights turn on automati-
cally (at a reduced intensity) whenever the hy
brid system is started and the parking
brake is released. Daytime running ligh ts are not designed for use at night.
For the U.S.A.: Daytime running lights can be turned off by operating the switch.
■Headlight control sensor
■Automatic light off system
●When the headlights come on: The headligh ts and tail lights turn off 30 seconds
after a door is opened and closed if the “POWER” switch is turned to ACCES -
SORY mode or turned off. (The lights turn off immediately if on the key is
pressed after all the doors are locked.)
●When only the tail lights come on: The tail lights turn off automatically if the
“POWER” switch is turned to ACCESSORY mode or turned off and the
driver’s door is opened.
To turn the lights on again, turn the “POWER” s
witch to ON mode, or turn the light
switch off once and then back to or .
The sensor may not function properly if an
object is placed on the sensor, or anything
that blocks the sensor is affixed to the wind-
shield. 
Doing so interferes with the sensor detecting
the level of ambient light and may cause the
automatic headlight system to malfunction.

202
2-4. Using other driving systems
Accelerate or decelerate to the
desired speed, and push the
lever down to set the speed.
“SET” indicator will come on.
■Adjusting the set speed
Increases the speed
Decreases the speed
Hold the lever until the desired
speed setting is obtained.
Fine adjustment of the set speed
can be made b
y lightly pushing
the lever up or down and releas -
ing it.
■ Canceling and resuming the constant speed control
Pulling the lever toward you
cancels the constant speed
contr
ol.
The speed setting is also can -
celed when the brakes are
applied.
Pushing the lever up resumes
the constant speed control.

208
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

209
2-4. Using other driving systems
2
When driving
Driving in vehicle-to-vehicle distance control mode
This mode employs a sensor to detect the presence of vehicles up to
approximately 400 ft. (120 m) ahead and to judge the distance between
your vehicle and those the vehicle ahead of you.
Note that vehicle-to-vehicle distance will close in when traveling on long
downhill slopes.
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver. The desired vehicle-to-vehi-
cle distance can also be set by operating the vehicle-to-vehicle distance con -
trol.
Example of deceleration cruising
When the vehicle ahead is driving slower than the set speed
When a vehicle is detected running ahead of you, the system automatically
decelerates your vehicle. When a grea ter reduction in vehicle speed is nec-
essary, the system applies the brakes. A warning tone warns you when the
s
ystem cannot decelerate sufficiently to prevent your vehicle from closing in
on the vehicle ahead.

210
2-4. Using other driving systems
Example of follow-up cruising 
When following a vehicle driving slower than the set speed
The system continues follow-up cruising while adjusting for changes in the
speed of the vehicle ahead in order to maintain the vehicle-to-vehicle dis -
tance set by the driver.
Example of acceleration 
When there are no longer any vehicles ahead driving slo
wer than the
set speed.
The system accelerates until the set speed is reached. The system then
returns to constant speed cruising.
Approach warning
When your vehicle is too close to a vehicle ahead, and sufficient auto-
matic deceleration via th e cruise contr
ol is not possible, the display will
flash and the buzzer will so und to alert the driver. An example of this
would be if another driver cuts in fron t of you while you are following a
vehicle. Apply the brakes to ensure an appropriate vehicle-to-vehicle dis -
tance.

214
2-4. Using other driving systems
■Certification
For vehicles sold in the U.S.A.
FCC ID: HYQDNMWR004
This device complies with Part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Radio frequency radiation exposure Information:
This equipment complies with FCC radiatio n exposure limits set forth for an uncon-
trolled environment.
This equipment should be installed and op erated with minimum distance of 20 cm
between the radiator (antenna) and your body.
This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
CAUTION
■Before using dynamic radar cruise control
Do not overly rely on vehicl e-to-vehicle distance control. 
Be aware of the set speed. If automatic deceleration/acceleration is not appropri-
ate, adjust the vehicle speed, as well as the distance between your vehicle and vehi-
cles ahead by applying the brakes etc.
■Cautions regarding the driving assist systems
Observe the following precautions. 
Failure to do so may cause an accident resulting in death or serious injury.
●Assisting the driver to measure following distance 
The dynamic radar cruise control is only in tended to help the driver in determin-
ing the following distance between the driver’s own vehicle and a designated
vehicle traveling ahead. 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 driver to pay clos e attention to the vehicle’s surroundings.