key battery Lexus HS250h 2011 Do-it-yourself maintenance / LEXUS 2011 HS250H OWNERS MANUAL (OM75037U)

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3-6. Using the storage featuresList of storage features............... 367
• Glove box ................................... 368
• Console box ................................ 369
• Cup holders.................................. 371
• Bottle holders ............................. 373
• Auxiliary boxes........................... 374
3-7. Other interior features Sun visors......................................... 375
Vanity mirrors ................................ 376
Clock ................................................. 377
Power outlets ................................. 378
Seat heaters and ventilators ..................................... 379
Armrest ............................................. 381
Rear sunshade .............................. 382
Floor mat......................................... 384
Trunk compartment features......................................... 386
Garage door opener................. 388
Compass.......................................... 396
Safety Connect ............................ 400 4-1. Maintenance and care
Cleaning and protecting the vehicle exterior.................. 408
Cleaning and protecting the vehicle interior ..................... 412
4-2. Maintenance Maintenance requirements ...... 415
General maintena nce .................. 417
Emission inspection and maintenance (I/M)
programs ....................................... 421
4-3. Do-it-yourself maintenance Do-it-yourself service precautions .................................. 422
Hood ................................................. 425
Positioning a floor jack............... 426
Engine compartment.................. 428
12-volt battery................................ 439
Tires ................................................... 443
Tire inflation pressure.................. 451
Wheels ............................................. 454
Air conditioning filter.................. 456
Electronic key battery ................ 459
Checking and replacing fuses ................................................. 461
Headlight aim (LED headlights) ....................... 473
Light bulbs ....................................... 475
4Maintenance and care

TABLE OF CONTENTSIndex
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5-1. Essential informationEmergency flashers.................... 488
If your vehicle needs to be towed ...................................... 489
If you think something is wrong ............................................. 495
Event data recorder .................... 496
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer
sounds... ........................................ 498
If a warning message is displayed ....................................... 507
If you have a flat tire..................... 527
If the hybrid system will not start ................................................. 537
If you lose your keys ................... 539
If the electronic key does not operate properly .............. 540
If the vehicle 12-volt battery is discharged ............................... 543
If your vehicle overheats .......... 548
If the vehicle becomes stuck................................................ 552
If your vehicle has to be stopped in
an emergency ............................ 554 6-1. Specifications
Maintenance data (fuel, oil level, etc.).................... 556
Fuel information ........................... 565
Tire information............................ 568
6-2. Customization Customizable features.............. 580
6-3. Initialization Items to initialize ........................... 592
Reporting safety defects for U.S. owners........................... 594
Seat belt instructions for Canadian owners
(in French) ................................... 595
SRS airbag instructions for Canadian owners
(in French) .................................... 597
5When trouble arises6Vehicle specifications
7For owners

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CAUTION
■General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol
and certain drugs delay reaction time, im pair judgment and reduce coordination,
which could lead to an accident that could result in death or serious injury.
Defensive driving: Always drive defensively. Anticipate mistakes that other drivers
or pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full at tention to driving. Anything that distracts
the driver, such as adjusting controls, ta lking on a cellular phone or reading can
result in a collision with resulting death or serious injury to you, your occupants or
others.
■General precaution regarding children’s safety
Never leave children unattended in the vehi cle, and never allow children to have or
use the key.
Children may be able to start the vehicle or shift the vehicle into neutral. There is
also a danger that children may injure themselves by playing with the cigarette
lighter, the windows, the moon roof, or othe r features of the vehicle. In addition, heat
build-up or extremely cold temperatures insi de the vehicle can be fatal to children.
■Disposal of the hybrid battery (traction battery)
If your vehicle is disposed of without the hybrid battery having been removed, there
is a danger of serious electric shock if high voltage parts, cables and their connec-
tors are touched. In the event that your ve hicle must be disposed of, the hybrid bat-
tery must be disposed of by your Lexus dealer or a qualified service shop. If the
hybrid battery is not disposed of properly, it may cause electric shock that can result
in death or serious injury.

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1-2. Key information
1
Before driving
Using the mechanical keyTo take out the mechanical key:
Electronic keys: Slide the release
lever and take the key out.
Card key: Press the lock release
button and take the key out.
The mechanical key can only be
inserted in one direction, as the key
only has grooves on one side. If the
key cannot be inserted in a lock
cylinder, turn it over and re-attempt
to insert it.
After using the mechanical key,
store it in the electronic key. Carry
the mechanical key together with
the electronic key. If the electronic
key battery is depleted or the entry
function does not operate properly,
you will need the mechanical key.
( P. 5 4 0 )
■Card key
●The mechanical key that is stored inside the card key should be used only if a
problem arises, such as when the card key does not operate properly.
●If it is difficult to take out the mechanical key, push down the lock release button
using a pen tip etc. If it is still difficult to pull it out, use a coin etc.
●To store the mechanical key in the card
key, insert it while pressing the lock
release button.

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1-2. Key information
●The card key is not waterproof.
■When required to leave the vehicle’s key with a parking attendant
Turn the luggage security system on as circumstances demand. (P. 3 6 8 )
Remove the mechanical key for your own use and provide the attendant with the
electronic key only.
■Key number plate
Keep the plate in a safe place such as your wallet, not in the vehicle. In the event that
a mechanical key is lost, a new key can be made at your Lexus dealer using the key
number plate. ( P. 5 3 9 )
■When riding in an aircraft
When bringing an electronic key onto an aircraft, make sure you do not press any
buttons on the electronic key while inside the aircraft cabin. If you are carrying an
electronic key in your bag etc., ensure that the buttons are not likely to be pressed
accidentally. Pressing a button may cause the electronic key to emit radio waves
that could interfere with the operation of the aircraft.
●If the battery cover is not installed and
the battery falls out or if the battery was
removed because the key got wet, rein-
stall the battery with the positive termi-
nal facing the Lexus emblem.

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1-2. Key information
NOTICE
■Precautions for handling the card key
●Do not apply excess force when inserting the mechanical key into the card key.
Doing so may damage the card key.
●If the battery or card key terminals get wet, the battery may corrode and the card
key may stop working.
If the key is dropped into water, or if drinking water etc. is spilled on the key,
immediately remove the battery cover and wipe the battery and terminals. (To
remove the battery cover, lightly grasp and pull it.) If the battery is corroded, have
your Lexus dealer replace the battery.
●Do not crush the battery cover or use a screwdriver to remove the battery cover.
Forcibly removing the battery co ver may bend or damage the key.
●If the battery cover is frequently removed, the battery cover may become loose.
●When installing the battery, make sure to check the direction of the battery.
Installing the battery in the wrong direction may cause the battery to deplete rap-
idly.
●The surface of the card key may be damage d, or its coating may peel off in the
following situations:
• The card key is carried together with hard objects, such as coins and keys.
• The card key is scraped with a sharp object, such as the tip of a mechanical
pencil.
• The surface of the card key is wiped with thinner or benzene.

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1-3. Opening, closing and locking the doors
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Before driving
■Alarms and warning indicators
A combination of exterior and interior alarms as well as warning messages shown
on the multi-information display is used to prevent theft of the vehicle and accidents
resulting from erroneous operation. Take appropriate measures in response to any
warning message on the multi-information display. ( P. 5 0 7 )
The following table describes circumstances and correction procedures when only
alarms are sounded.
■Security feature
If a door is not opened within approx imately 60 seconds after the vehicle is
unlocked, the security feature automatically locks the vehicle again.
■Battery-saving function
The battery-saving function will be activa ted in order to prevent the electronic key
battery and the 12-volt battery from bein g discharged while the vehicle is not in
operation for a long time.
●In the following situations, the smart access system with push-button start may
take some time to unlock the doors.
• The electronic key has been left in an area of approximately 6 ft. (2 m) of the
outside of the vehicle for 10 minutes or longer.
• The smart access system with push-button start has not been used for 5 days or longer.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 10
seconds.An attempt was made to lock
the vehicle while a door was
open.Close all of the doors
and lock the doors
again.
Interior alarm pings
repeatedly
The “POWER” switch was
turned to ACCESSORY
mode while the driver’s door
is open (The driver’s door
was opened when the
“POWER” switch is in
ACCESSORY mode.)
Turn the “POWER”
switch off and close the
driver’s door.

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1-3. Opening, closing and locking the doors
●If the smart access system with push-button start has not been used for 14 days
or longer, the doors cannot be unlocked at any doors except the driver’s door. In
this case, take hold of the driver’s door handle, or use the wireless remote con-
trol or the mechanical key, to unlock the doors.
■Conditions affecting operation
The smart access system with push-button start uses weak radio waves. In the fol-
lowing situations, the communication betw een the electronic key and the vehicle
may be affected, preventing the smart access system with push-button start, wire-
less remote control and immobilize r system from operating properly.
(Ways of coping: P. 5 4 0 )
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas station, radio station, large display,
airport or other facility that generates strong radio waves or electrical noise
●When carrying a portable radio, cellular phone, cordless phone or other wire-
less communication devices
●When the electronic key is in contact wi th, or is covered by the following metal-
lic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless key (that emit radio waves) is being used nearby
●When carrying the electronic key togeth er with the following devices that emit
radio waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or person al digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or metallic objects are attached to the rear
window

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1-3. Opening, closing and locking the doors
1
Before driving
Depending on the position and holding condition of the electronic key, the key may
not be detected correctly and the system may not operate properly. (The alarm may
go off accidentally, or the door lock prevention may not operate.)
■If the smart access system with push-button start does not operate properly
●Locking and unlocking the doors, unlock ing the trunk: Use the mechanical key.
(  P. 5 4 0 )
●Starting the hybrid system:  P. 5 4 1
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The card key battery life is about a year
and a half.)
●If the battery becomes low, an alarm will sound in the cabin when the hybrid sys-
tem stops. (P. 4 9 )
●As the electronic key always transmits radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indicate
that the electronic key battery may be depleted. Replace the battery when nec-
essary. ( P. 4 5 9 )
• The smart access system with push-but ton start or the wireless remote con-
trol does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
●To avoid serious deterioration, do not leave the electronic key within 3 ft. (1 m) of
the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
•Glass top ranges
• Table lamps
■When the electronic key battery is fully depleted
 P. 4 5 9
■Customization
Settings (e.g. smart access system with push-button start) can be changed.
(Customizable features  P. 5 8 0 )

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1-3. Opening, closing and locking the doors
■Pa n i c m o d e
■Security feature
P. 4 9
■Alarm
Using the wireless remote control to lock the doors will set the alarm system.
( P. 100)
■Conditions affecting operation
 P. 5 0
■If the wireless remote control does not operate properly
Locking and unlocking the doors, unlocking the trunk: Use the mechanical key.
( P. 5 4 0 )
■Electric key battery depletion
 P. 5 3
■When the electric key battery is fully depleted
P. 4 5 9
■Customization
Settings (e.g. door unlocking function) can be changed.
(Customizable features P. 5 8 0 )
When is pressed for longer than about
one second, an alarm will sound intermit-
tently and the vehicle lights will flash to deter
any person from trying to break into or dam-
age your vehicle.
To stop the alarm, press any button on the
electronic key.