park assist Lexus HS250h 2010 Owner's Manual

TABLE OF CONTENTSIndex
HS250h_U_75033U(Canada)
2
1-1. Hybrid systemHybrid system................................... 24
Hybrid system precautions ......... 27
Energy monitor/consumption screen................................................ 32
Hybrid vehicle driving tips........... 37
1-2. Key information Keys ...................................................... 39
1-3. Opening, closing and locking the doors
Smart access system with push-button start .......................... 44
Wireless remote control .............. 54
Doors.................................................... 57
Trunk..................................................... 60 1-4. Adjustable components (seats,
mirrors, steering wheel)
Front seats.......................................... 64
Driving position memory (driver’s seat) ................................. 68
Head restraints................................... 71
Seat belts ............................................ 73
Steering wheel.................................. 79
Inside rear view mirror................... 81
Outside rear view mirrors ........... 83
1-5. Opening and closing the windows and moon roof
Power windows................................ 86
Moon roof .......................................... 89
1-6. Refueling Opening the fuel tank cap........... 92
1-7. Theft deterrent system Immobilizer system ........................ 96
Alarm.................................................... 98
Theft prevention labels (for U.S.A.) ..................................... 101
1Before driving
For information regarding the equipment listed below, refer to the “Navigation
System Owner’s Manual”.
• Navigation system
• Air conditioning
• Windshield wiper de-icer
• Rear view monitor system
• Intuitive parking assist • Audio/video system
• Rear window and outside rear view
mirror defogging
•Climate control
• Wide view front monitor system

1
2
3
4
5
6
7
HS250h_U_75033U(Canada)
3
1-8. Safety informationCorrect driving posture ............. 102
SRS airbags ..................................... 104
Front passenger occupant classification system .................... 116
Child restraint systems ................. 121
Installing child restraints ............. 125
2-1. Driving procedures Driving the vehicle ........................ 136
Power (ignition) switch ............... 145
EV drive mode ............................... 150
Hybrid transmission ..................... 153
Turn signal lever ............................ 159
Parking brake ................................. 160
Horn...................................................... 161
2-2. Instrument cluster Gauges and meters ..................... 162
Indicators and warning lights................................................. 165
Multi-information display ........... 169
Head-up display ............................ 175
2-3. Operating the lights and windshield wipers
Headlight switch ............................ 183
Automatic High Beam ................ 188
Fog light switch .............................. 194 Windshield wipers and
washer ............................................ 195
Headlight cleaner switch ......... 200
2-4. Using other driving systems Cruise control ................................ 201
Dynamic radar cruise control........................................... 205
LKA (Lane-Keeping Assist) ...... 217
Driving assist systems................. 225
Hill-start assist control ............... 230
Pre-Collision System.................. 232
2-5. Driving information Cargo and luggage ..................... 240
Vehicle load limits........................ 243
Winter driving tips ....................... 244
Trailer towing ................................. 247
Dinghy towing ............................... 248
3-1. Using the air conditioning system and defogger
Automatic air conditioning system ............................................ 252
Rear window defogger switch ............................................. 260
Windshield wiper de-icer .......... 261
2When driving
3Interior features

107
1-8. Safety information
1
Before driving
HS250h_U_75033U(Canada)The main SRS airbag system components are shown above. The SRS air-
bag system is controlled by the airbag sensor assembly. The airbag sen-
sor assembly consists of a safing sensor and an airbag sensor.
In certain types of severe frontal or side impacts, the SRS airbag system
triggers the airbag inflators. A chemical reaction in the inflators quickly
fills the airbags with non-toxic gas to help restrain the motion of the occu-
pants.
■If the SRS airbags deploy (inflate)
●Bruising and slight abrasions may result from contact with a deploying (inflating)
SRS airbag.
●A loud noise and white powder will be emitted.
●Parts of the airbag module (steering wheel hub, airbag cover and inflator) as
well as the seats, parts of the front and rear pillars, and roof side rails, may be hot
for several minutes. The airbag itself may also be hot.
●The windshield may crack.
●For Safety Connect subscribers, if the SRS airbags deploy or in the event of a
severe rear-end collision, the system is designed to send an emergency call to
the response center, notifying them of the vehicle’s location (without needing to
push the “SOS” button) and an agent will attempt to speak with the occupants
to ascertain the level of emergency and assistance required. If the occupants
are unable to communicate, the agent automatically treats the call as an emer-
gency and helps to dispatch the necessary emergency services. (
→P. 3 9 5 )
■Operating conditions (SRS front airbags)
●The SRS front airbags will deploy in the event of an impact that exceeds the set
threshold level (the level of force corresponding to an approximately 12-18 mph
[20-30 km/h] frontal collision with a fixed wall that does not move or deform).
However, this threshold velocity will be considerably higher if the vehicle strikes
an object, such as a parked vehicle and sign pole, which can move or deform on
impact, or if the vehicle is involved in an underride collision (e.g. a collision in
which the front of the vehicle “underrides”, or goes under, the bed of a truck, etc.).
●It is possible that in some collisions where the forward deceleration of the vehi-
cle is very close to the designed threshold level, the SRS front airbags and the
seat belt pretensioners may not activate together.

When driving2
135
HS250h_U_75033U(Canada)
2-1. Driving proceduresDriving the vehicle.................. 136
Power (ignition) switch .......... 145
EV drive mode.......................... 150
Hybrid transmission ............... 153
Turn signal lever ....................... 159
Parking brake ........................... 160
Horn ............................................. 161
2-2. Instrument cluster Gauges and meters ................ 162
Indicators and warning lights ......................................... 165
Multi-information display ..... 169
Head-up display ...................... 175
2-3. Operating the lights and windshield wipers
Headlight switch...................... 183
Automatic High Beam .......... 188
Fog light switch ........................ 194
Windshield wipers and washer ..................................... 195
Headlight cleaner switch.... 200 2-4. Using other driving systems
Cruise control.......................... 201
Dynamic radar cruise control .................................... 205
LKA (Lane-Keeping Assist) ........ 217
Driving assist systems ........... 225
Hill-start assist control ......... 230
Pre-Collision System ............ 232
2-5. Driving information Cargo and luggage ............... 240
Vehicle load limits .................. 243
Winter driving tips ................. 244
Trailer towing ........................... 247
Dinghy towing......................... 248

143
2-1. Driving procedures
2
When driving
HS250h_U_75033U(Canada)
CAUTION
■When taking a nap in the vehicle
Always turn the hybrid system off. Otherwise, if you accidentally move the shift
lever or depress the accelerator pedal, this could cause an accident or fire due to
hybrid system overheating. Additionally, if the vehicle is parked in a poorly venti-
lated area, exhaust gases may collect and enter the vehicle, leading to death or a
serious health hazard.
■When braking
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause one side
of the vehicle to brake differently than the other side. Also, the parking brake may
not securely hold the vehicle.
●If the power brake assist function does not operate, do not follow other vehicles
closely and avoid downhill or sharp turns that require braking.
In this case, braking is still possible, but it will require more force on the pedal than
usual. Braking distance may also increase.
●The brake system consists of 2 individual hydraulic systems; if one of the systems
fails, the others will still operate. In this case, the brake pedal should be depressed
more firmly than usual and the braking distance will increase. If this happens, do
not continue to drive the vehicle. If the brake system warning light (red indicator)
comes on while driving, immediately stop the vehicle in a safe place and contact
your Lexus dealer.
NOTICE
■When driving the vehicle
Do not use the accelerator pedal or depress the accelerator and brake pedals at
the same time to hold the vehicle on a hill.
■When parking the vehicle
Be sure to firmly apply the parking brake and set the shift position to P. Failure to do
so may cause the vehicle to move or the vehicle may accelerate suddenly if the
accelerator pedal is accidentally depressed.

166
2-2. Instrument cluster
HS250h_U_75033U(Canada)
■Indicators
The indicators inform the driver of the operating state of the vehi-
cle’s various systems.
Turn signal indicator
(→ P. 1 5 9 )“ECO MODE” indicator
(→ P. 1 5 5 )
(U.S.A.)
Headlight indicator
(→ P. 1 8 3 )“PWR MODE” indicator
(→ P. 1 5 5 )
(Canada)
Tail light indicator
(→ P. 1 8 3 )Cruise control indicator
(→ P. 201, 205)
Headlight high beam
indicator ( →P. 1 8 5 )
(if equipped)
Radar cruise control
indicator (→ P. 2 0 5 )
(if equipped)
Automatic High Beam
indicator
(→ P. 1 8 8 )
(if equipped)
“LKA” indicator
(→ P. 2 1 8 )
Front fog light indicator
(→ P. 1 9 4 )“SET” indicator
(→ P. 201, 205)
“READY” indicator
(→ P. 1 4 5 )
(if equipped)
Intuitive parking assist
indicator (Refer to “Navi-
gation System Owner’s
Manual”.)
EV drive mode indicator
(→ P. 1 5 0 )
(if equipped)
“AFS OFF” indicator
(→ P. 1 8 5 )
Eco Driving Indicator
Light ( →P. 1 3 8 )Slip indicator
(→ P. 226, 230)
*1
*1*1, 2

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2-2. Instrument cluster
2
When driving
HS250h_U_75033U(Canada)
Display order may vary depending on vehicle condition.
Electronic feature control contentsSetting electronic feature controls
AFS (if equipped)→P. 1 8 5
Intuitive parking assist
(if equipped)Refer to “Navigation System
Owner’s Manual”.
Other contentsDe ta ils
Customization ( →P. 5 74 )
Settings of functions such as the
door lock and light illumination time
can be changed
Dynamic radar cruise control
(if equipped) ( →P. 2 0 5 )Automatically displayed when using
the dynamic radar cruise control
LKA (Lane Keeping Assist)
(if equipped) ( →P. 2 1 7 )Automatically displayed when using
the lane keeping assist
PCS (Pre-Collision System)
(if equipped) ( →P. 232, 502, 505)Automatically displayed if there is a
possibility of collision.

173
2-2. Instrument cluster
2
When driving
HS250h_U_75033U(Canada)■
Average vehicle speed
Displays the average vehicle speed since the function was reset
The function can be reset by pushing the “ENTER” switch for longer than 1
second when the average vehicle speed is displayed.
■Outside temperature
Displays the outside temperature
■ Tire inflation pressure
Displays inflation pressure of each tire. There is no correlation between
the order of the displayed values and the tire positions.
It may take a few minutes to display the tire inflation pressure after the
“POWER” switch is turned to ON mode. It may also take a few minutes to
display the tire inflation pressure after the inflation pressure has been
adjusted.
■Electronic feature control can be turned on/off when
The “POWER” switch is in ON mode.
■Conditions for ending electronic feature control
In the following situations, the electronic feature control will end:
●The menu switch is pressed
●The radar cruise control is operated (if equipped)
●The lane keeping assist is operated (if equipped)
●Intuitive parking assist starts operating (if equipped)
●No action is performed for some time after the electronic feature control
screen is displayed
●A warning message appears after the electronic feature control screen is dis-
played

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2-4. Using other driving systems
2
When driving
HS250h_U_75033U(Canada)
●When the lane lines cannot be recognized while driving.
●Low speed or high speed wiper operation states.
●The no-handed driving warning activates while the lane keeping assist function
is active. (The buzzer will beep twice.)
■No-handed driving warning
If the steering wheel is not operated for about 15 seconds on a straight road or
about 5 seconds on a curve, the buzzer will beep twice, indicators on the multi-
information display will flash, and the lane keeping assist function will be temporarily
canceled. If you drive the vehicle with your hands lightly touching the steering
wheel, this may also be detected as no-handed driving.
■When the vehicle has been parked in the sun
The LKA system functions may not be available for a while after driving has started.
In such cases, turn the LKA system off and turn it on again after normal temperature
returns. When the temperature in the cabin decreases and the temperature around
the camera sensor becomes suitable for its operation, the functions will begin to
operate.
■Warning lights and messages for LKA
Warning lights and messages are used to indicate a system malfunction or to inform
the driver of the need for caution while driving. (→P. 4 9 3 , 5 0 5 )

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2-4. Using other driving systems
HS250h_U_75033U(Canada)
Hill-start assist control
■Hill-start assist control can be operated when
●The shift position is in a position other than P.
●The parking brake is not applied.
●The accelerator pedal is not depressed.
■Hill-start assist control
●While hill-start assist control is operating, the brakes remain automatically
applied after the driver releases the brake pedal. The stop lights and the high
mounted stoplight turn on.
●Hill-start assist control operates for about 2 seconds after the brake pedal is
released.
●If the slip indicator does not flash and the buzzer does not sound when the brake
pedal is further depressed, slightly reduce the pressure on the brake pedal (do
not allow the vehicle to roll backward) and then firmly depress it again. If the sys-
tem still does not operate, check if the operating conditions explained above
have been met.
Hill-start assist control helps to prevent the vehicle from rolling backwards
when starting on an incline or slippery slope.
To engage hill-start assist con-
trol, further depress the brake
pedal when the vehicle is
stopped completely.
A buzzer will sound once to
indicate the system is activated.
The slip indicator will also start
flashing.