2010 Lexus IS250C Retractable top

TABLE OF CONTENTSIndex
10_IS250C/350C_U
2
1-1. Key informationKeys ...................................................... 24
1-2. Opening, closing and locking the doors and trunk
Smart access system with push-button start .......................... 28
Wireless remote control .............. 40
Doors.................................................... 43
Trunk..................................................... 47
1-3. Adjustable components (seats, mirrors,
steering wheel)
Front seats ........................................... 51
Driving position memory (driver’s seat) ................................. 56
Seat position memory (front passenger’s seat) ............. 60
Head restraints................................. 62
Seat belts ............................................ 65
Steering wheel.................................. 72
Anti-glare inside rear view mirror...................................... 74
Outside rear view mirrors ........... 75 1-4. Opening and closing the
windows and retractable
hardtop
Power windows................................ 78
Retractable hardtop........................ 81
1-5. Refueling Opening the fuel tank cap........... 90
1-6. Theft deterrent system Engine immobilizer system ......... 93
Alarm.................................................... 95
Theft prevention labels (U.S.A.) ............................................. 97
1-7. Safety information Correct driving posture ............... 98
SRS airbags ..................................... 100
Front passenger occupant classification system ..................... 111
Child restraint systems ................. 116
Installing child restraints ............. 120
1Before driving

TABLE OF CONTENTSIndex
10_IS250C/350C_U
6
5-1. Essential informationEmergency flashers..................... 452
If your vehicle needs to be towed ....................................... 453
If you think something is wrong ............................................. 459
Fuel pump shut off system ....... 460
Event data recorder ..................... 461
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer
sounds... ........................................ 463
If a warning message is displayed ....................................... 472
If you have a flat tire (vehicles with standard
tires) ............................................... 486
If you have a flat tire (vehicles with run-flat
tires) ................................................ 495
If the engine will not start .......... 497
If the shift lever cannot be shifted from P........................ 499
If you lose your keys ................... 500
If the electronic key does not operate properly ................ 501
If the vehicle battery is discharged .................................. 506
If your vehicle overheats .......... 509 If the vehicle becomes stuck .... 512
If the retractable hardtop
does not close.............................. 514
6-1. Specifications Maintenance data (fuel, oil level, etc.)..................... 526
Fuel information ............................ 542
Tire information............................. 545
6-2. Customization Customizable features............... 557
6-3. Initialization Items to initialize ........................... 562
Reporting safety defects for U.S. owners........................... 564
Seat belt instructions for Canadian owners
(in French) ................................... 565
5When trouble arises
6Vehicle specifications
7For owners

10_IS250C/350C_U
8
Headlights (high beam) P. 173
Pictorial indexExterior
Turn signal lights P. 156
Fog lights P. 176
Side marker lights P. 173
Headlights
Low/high beam (discharge bulbs)
Low beam (halogen bulbs)P. 173
Windshield wipers P. 177
Retractable hardtop P. 81
Outside rear view mirrors P. 75
Turn signal lights
P. 156
Parking lights P. 173
Hood P. 389

10_IS250C/350C_U
21
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, impair 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 attention to driving. Anything that distracts
the driver, such as adjusting controls, talking 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 vehicle, 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 retractable hardtop, or other features of the vehicle. In
addition, heat build-up or extremely cold temperatures inside the vehicle can be
fatal to children.

Before driving1
23
10_IS250C/350C_U
1-1. Key informationKeys ............................................... 24
1-2. Opening, closing and locking the doors and
trunk
Smart access system with push-button start ................... 28
Wireless remote control ........ 40
Doors ............................................ 43
Trunk ............................................. 47
1-3. Adjustable components (seats, mirrors,
steering wheel)
Front seats .................................... 51
Driving position memory (driver’s seat) ........................... 56
Seat position memory (front passenger’s seat) ........ 60
Head restraints .......................... 62
Seat belts ..................................... 65
Steering wheel........................... 72
Anti-glare inside rear view mirror ............................... 74
Outside rear view mirrors ...... 75 1-4. Opening and closing the
windows and retractable
hardtop
Power windows .......................... 78
Retractable hardtop ................. 81
1-5. Refueling Opening the fuel tank cap ..... 90
1-6. Theft deterrent system Engine immobilizer system.... 93
Alarm............................................ 95
Theft prevention labels (U.S.A.)...................................... 97
1-7. Safety information Correct driving posture ......... 98
SRS airbags .............................. 100
Front passenger occupant classification system............... 111
Child restraint systems ........... 116
Installing child restraints....... 120

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1-2. Opening, closing and locking the doors and trunk
10_IS250C/350C_U
■Operation signals
A buzzer sounds and the emergency flashers flash to indicate that the doors have
been locked/unlocked. (Locked: Once; Unlocked: Twice)
■Conditions affecting operation
The smart access system with push-button start uses weak radio waves. In the fol-
lowing situations, the communication between the electronic key and the vehicle
may be affected, preventing the smart access system with push-button start from
operating properly:
(Ways of coping: →P. 5 0 1 )
●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 with, 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 multiple electronic keys are in the vicinity
●When another wireless key (that emits radio waves) is being used nearby
●When carrying or using the electronic key together with the following devices
that emit radio waves
• Another vehicle's electronic key or a wireless key that emits radio waves
• Personal computer or personal digital assistant (PDA)
• Digital audio player
• Portable game system
●If window tint with a metallic content or metallic objects are attached to the rear
window
●Immediately after the retractable hardtop is opened or closed

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1-2. Opening, closing and locking the doors and trunk
1
Before driving
10_IS250C/350C_U
■To operate the system properly
●Make sure to carry the electronic key when operating the system. Actions such
as locking and unlocking the doors cannot be performed from outside the vehi-
cle if the electronic key is inside the vehicle, even when the retractable hardtop
is open.
●Do not get the electronic key too close to the vehicle when operating the sys-
tem from the outside of the vehicle.
●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 function.)
■Note for the entry function
●Even when the electronic key is within the effective range (detection areas), the
system may not operate properly in the following cases.
• The electronic key is too close to the window or outside door handle, near the
ground, or in a high place when the doors are locked or unlocked.
• The electronic key is near the ground or in a high place, or too close to the
rear bumper center when the trunk is unlocked.
• The electronic key is on the instrument panel, rear package tray or floor, or in
the glove box when the engine is started or “ENGINE START STOP” switch
modes are changed.
●As long as the electronic key is within the effective range, the doors may be
locked or unlocked by anyone.
●Even if the electronic key is not inside the vehicle, it may be possible to start the
engine if the electronic key is near the window.
●The doors may unlock if a large amount of water splashes on the door handle,
such as in the rain or in a car wash. (The doors will automatically be locked after
approximately 60 seconds if the doors are not opened and closed.)
●Gripping the door handle when wearing a glove may not unlock the door.
●If the wireless remote control is used to lock the doors when the electronic key
is near the vehicle, there is a possibility that the door may not be unlocked by the
entry function. (Use the wireless re mote control to unlock the doors.)
●A sudden approach to the effective range or door handle operation may prevent
the doors from being unlocked. In this case, return the door handle to the original
position and check that the doors unlock before pulling the door handle again.

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1-2. Opening, closing and locking the doors and trunk
1
Before driving
10_IS250C/350C_U
*: Vehicles with an automatic transmission only
If the electronic key is removed from the vehicle without any of the doors being
opened, such as through the open retractable hardtop, these warning functions
may not operate properly.
■If the smart access system with push-button start does not operate properly
●Locking and unlocking the doors and trunk: Use the mechanical key.
(→ P. 5 0 1 )
●Starting the engine: →P. 1 4 2
■When the electronic key battery is fully depleted
→P. 4 2 5
■Customization that can be configured at Lexus dealer
It is possible to deactivate the operation signals of the system, such as the emer-
gency flashers. (Customizable features → P. 557)
AlarmSituationCorrection procedure
Interior alarm
sounds continu-
ously
*
Tried to open the door and
exit the vehicle without shift-
ing the shift lever to P
Shift the shift lever to P.
Interior alarm pings
continuously
Switched to ACCESSORY
mode while the driver's door
is open (Opened the driver's
door when the “ENGINE
START STOP” switch is in
ACCESSORY mode.)
Close the driver's door.
Tu r n e d t h e “ E N G I N E S TA R T
STOP” switch OFF while the
driver's door is open
Close the driver's door.