2010 Lexus HS250h ECU

141
2-1. Driving procedures
2
When driving
CAUTION
■When changing the shift position
Be careful not to change the shift position with the accelerator pedal depressed. 
Changing the shift position to any positions other than P or N may cause the vehicle
to accelerate abruptly, causing an accident and resulting in death or serious injury.
■If you hear a squealing or scraping no ise (brake pad wear limit indicators)
Have your Lexus dealer check and replac e the brake pads as soon as possible. 
Rotor damage may result if the pa ds are not replaced when needed.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or
those of the brake discs are exceeded.
■When the vehicle is stopped
●Do not depress the accelerator pedal unnecessarily. 
If the vehicle is in any shift position other than P or N, the vehicle may accelerate
suddenly and unexpectedly , causing an accident.
●Do not leave the vehicle with the hybrid system on for a long time. 
If such a situation cannot be avoided, park the vehicle in an open space and
check that exhaust fumes do no t enter the vehicle interior.
●In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the “READY” indicator is on. Apply the parking
brake as necessary.
●If the vehicle is stopped on an incline, in order to prevent accidents caused by the
vehicle rolling forward or backward, always depress the brake pedal and securely
apply the parking brake as needed.
●Avoid revving or racing the engine. 
Running the engine at high speed while the vehicle is stopped may cause the
exhaust system to overheat, which could result in a fire if combustible material is
nearby.
■When the vehicle is parked
●Do not leave glasses, cigarett e lighters, spray cans, or soft drink cans in the vehi-
cle when it is in the sun. 
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a fire.
• The temperature inside the vehicle may cause the plastic lenses and plastic material of glasses to deform or crack.

143
2-1. Driving procedures
2
When driving
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 th is 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.

161
2-1. Driving procedures
2
When driving
Horn
■After adjusting the steering wheel (manually adjustable type)
Make sure that the steering wheel is securely locked. 
The horn may not sound if the steeri ng
wheel is not securely locked. (P. 7 9 )
To sound the horn, press on or
close to the
mark.

185
2-3. Operating the lights and windshield wipers
2
When driving
Turning on the high beam headlights
With the headlights on, push the
lever away from you to turn on
the high beam

s.
When the light switch is in
position, the Automatic High Beam
sy
stem will be activated. ( P. 1 8 8 )
Pull the lever toward you to the
ce
nter position to turn the high
beams off.
Pull the lever toward you and
release it to flash the high beams
once.
You can flash the high beams with
the headlights on or off.
AFS (Adaptive Front-lighting System) (if equipped)
AFS (Adaptive Front-lighting System) secures excellent visibility at inter-
sections and on curves by automatically adjusting the dir
ection of the
light axis of the headlights according to vehicle speed and the degree of
the tire’s angle as controlled by steering input.
AFS operates at speeds of 6 mph (10 km/h) or higher.
■ Deactivating AFS
Press the menu switch.
The multi-information display will
change modes to electronic fea-
ture control mode.
Press the “ENTER” switch
upwards or downwards until
AF

S appears.

194
2-3. Operating the lights and windshield wipers
Fog light switch
■Fog lights can be used when
The headlights are on in low beam.
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.
The fog lights secure excellent visibility in difficult driving conditions, such
as in rain and fog.
Turns the front fog
lights off
Turns the front fog
lights on

240
2-5. Driving information
Cargo and luggage
Capacity and distribution
Cargo capacity depends on the total weight of the occupants.
(Cargo capacity) = (Total load capa city) — (T
otal weight of occupants)
Steps for Determining Correct Load Limit 
(1) Locate the statement “The combined weight of occupants and cargo should ne
ver exceed XXX kg or XXX lbs.” on your vehicle’s placard.
(2) Determine the combined weight of th e driv
er and passengers that will
be riding in your vehicle.
(3)Subtract the combined weight of the driv
er and passengers from
XXX kg or XXX lbs.
(4)The resulting figure equals the availabl
e amount of cargo and luggage
load capacity.
For example, if the “XXX” amount equals 1400 lbs. and ther
e will be
five 150 lb. passengers in your vehi cle, the amount of available cargo
and luggage load capacity is 650 lbs. (1400  750 (5150) = 650
lbs.)
(5)Determine the combined weight of luggage and cargo being loaded
on the vehicle. That weight may no t safely exceed the available cargo
and luggage load capacity calculated in Step 4.
Take notice of the following informat ion about storage precautions, cargo
capacity and load:
● Stow cargo and luggage in the trunk whenever possible.
● Be sur
e all items are secured in place.
●T
o maintain vehicle balance while driving, position luggage evenly
within the luggage compartment.
● F
or better fuel economy, do not carry unnecessary weight.

242
2-5. Driving information
CAUTION
■Things that must not be carried in the trunk
The following things may cause a fire if loaded in the trunk:
●Receptacles containing gasoline
●Aerosol cans
■Storage precautions
Observe the following precautions.
Failing to do so may result in death or serious injury.
●Stow cargo and luggage in th e trunk whenever possible.
●Do not place cargo or luggage in or on the following locations as the item may
get under the brake or accelerator pedal and prevent the pedals from being
depressed properly, block the driver’s vision, or hit the driver or passengers,
causing an accident:
• At the feet of the driver
• On the front passenger or rear seats (when stacking items)
• On the package tray
• On the instrument panel
•On the dashboard
●Secure all items in the occupant compartment, as they may shift and injure some-
one during sudden braking, sudd en swerving or an accident.
■Capacity and distribution
●Do not exceed the maximum axle weight ra ting or the total vehicle weight rating.
●Even if the total load of occupant’s weight and the cargo load is less than the total
load capacity, do not apply the load unevenly. Improper loading may cause dete-
rioration of steering or braking control which may cause death or serious injury.

Interior features3
251
3-3. Using the Bluetooth® audio
system
Bluetooth
® audio system ...... 311
Using the Bluetooth® 
audio system .......................... 314
Operating a Bluetooth
® 
enabled portable player..... 319
Setting up a Bluetooth
® 
enabled portable player... 322
Bluetooth
® audio system 
setup ........................................ 327
3-4. Using the hands-free phone system (for cellular phones)
Hands-free system for 
cellular phones.................... 328
Using the hands-free 
system (for cellular 
phones) .................................. 332
Making a phone call ............. 340
Setting a cellular phone ....... 345
Security and system 
setup ....................................... 350
Using the phone book........... 354 3-5. Using the interior lights
Interior lights list .................... 360
•Interior lights ......................... 361
• Personal lights ...................... 361
3-6. Using the storage features List of
storage features......... 363
• Glove box .............................. 364
• Console box ......................... 365
• Cup holders .......................... 367
• Bottle holders....................... 369
• Auxiliary boxes .................... 370
3-7. Other interior features Sun visors
.................................. 371
Vanity mirrors ......................... 372
Clock ......................................... 373
Power outlets ........................... 374
Seat heaters and 
ventilators ............................. 375
Armrest ..................................... 377
Rear sunshade ........................ 378
Floor mat .................................. 380
Trunk compartment 
features ................................... 381
Garage door opener ............ 383
Compass ................................... 391
Safety Connect ...................... 395