Page 57 of 588

571-1. For safe use
1
For safety and security
IS250_EE(OM53C51E)
●It is recommended that children sit in the rear seats to avoid accidental con-
tact with the shift lever, wiper switch etc.
●Use the rear door child-protector lock or the window lock switch to avoid
children opening the door while driving or operating the power window acci-
dentally.
●Do not let small children operate equipment which may catch or pinch body
parts, such as the power window, hood, trunk, seats etc.
Safety information for children
Observe the following precautions when children are in the vehicle.
Use a child restraint system appropriate for the child, until the child becomes
large enough to properly wear the vehicle’s seat belt.
CAUTION
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 windows, the moon roof
or other features of the vehicle. In addition, heat build-up or extremely cold tempera-
tures inside the vehicle can be fatal to children.
Page 76 of 588

761-1. For safe use
IS250_EE(OM53C51E)
Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if inhaled.
CAUTION
Exhaust gases include harmful carbon monoxide (CO), which is colorless and odorless.
Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an accident
caused by light-headedness, or may lead to death or a serious health hazard.
■Important points while driving
●Keep the trunk lid closed.
●If you smell exhaust gases in the vehicle even when the trunk lid is closed, open the
windows and have the vehicle inspected at any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional as soon as possible.
■When parking
●If the vehicle is in a poorly ventilated area or a closed area, such as a garage, stop the
engine.
●Do not leave the vehicle with the engine on for a long time.
If such a situation cannot be avoided, park the vehicle in an open space and ensure
that exhaust fumes do not enter the vehicle interior.
●Do not leave the engine running in an area with snow build-up, or where it is snowing.
If snowbanks build up around the vehicle while the engine is running, exhaust gases
may collect and enter the vehicle.
■Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or crack caused
by corrosion, damage to a joint or abnormal exhaust noise, be sure to have the vehicle
inspected and repaired by any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
Page 82 of 588
821-2. Theft deterrent system
IS250_EE(OM53C51E)
Vehicles employing this system have
labels on the window glass of both front
doors.
Turn the engine switch off, have all the passengers exit the vehicle and ensure
that all the doors are closed.
Using the entry function:
Touch the sensor area on the outside door handle twice within 5 seconds.
Using the wireless remote control:
Press twice within 5 seconds.
Using the entry function: Hold the outside door handle.
Using the wireless remote control: Press .
Double locking system
Unauthorized access to the vehicle is prevented by disabling the door unlock-
ing function from both the interior and exterior of the vehicle.
Setting the double locking system
Canceling the double locking system
CAUTION
■Double locking system precaution
Never activate the double locking system when there are people in the vehicle
because all the doors cannot be opened from inside the vehicle.
Page 84 of 588
841-2. Theft deterrent system
IS250_EE(OM53C51E)
Do one of the following to deactivate or stop the alarm:
●Unlock the doors or open the trunk using the entry function or wireless
remote control.
●Start the engine. (The alarm will be deactivated or stopped after a few sec-
onds.)
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing:
●Nobody is in the vehicle.
●The windows and moon roof (if equipped) are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
Deactivating or stopping the alarm
Page 87 of 588

871-2. Theft deterrent system
1
For safety and security
IS250_EE(OM53C51E)
■Canceling and automatic re-enabling of the intrusion sensor and tilt sensor
●The alarm will still be set even when the intrusion sensor and tilt sensor are canceled.
●After the intrusion sensor and tilt sensor are canceled, pressing the engine switch or
unlocking the doors using the entry function or wireless remote control will re-enable
the intrusion sensor and tilt sensor.
●The intrusion sensor and tilt sensor will automatically be re-enabled when the alarm
system is deactivated.
■Intrusion sensor detection considerations
The sensor may trigger the alarm in the following situations:
●Places with extreme vibrations or noises, or situations in which the vehicle is subject to
repeated impacts or vibrations:
• When parked in a parking garage
• When the vehicle is transported on a ferry, trailer, train, etc.
• When ice adhering to the vehicle is removed
• When the vehicle is in an automatic or high-pressure car wash
• When in a hail or lightning storm
●A window or the moon roof is open.
In this case, the sensor may detect the follow-
ing:
• Wind or the movement of objects such as
leaves and insects inside the vehicle
• Ultrasonic waves emitted from devices
such as the intrusion sensors of other vehi-
cles
• The movement of people outside the vehi-
cle
●Unstable items, such as dangling accessories
or clothes hanging on the coat hooks, are in
the vehicle.
Page 111 of 588
111
3
Operation of
each component
IS250_EE(OM53C51E)
3-1. Key information
Keys .................................................... 112
3-2. Opening, closing and
locking the doors and trunk
Doors .................................................118
Trunk ................................................. 125
Smart entry & start system...... 130
3-3. Adjusting the seats
Front seats....................................... 147
Rear seats........................................149
Driving position memory........... 151
Head restraints ............................ 156
3-4. Adjusting the steering
wheel and mirrors
Steering wheel ............................. 159
Inside rear view mirror................ 161
Outside rear view mirrors ....... 163
3-5. Opening, closing the
windows and moon roof
Power windows ............................. 167
Moon roof .......................................170
Page 112 of 588
112
IS250_EE(OM53C51E)3-1. Key information
The following keys are provided with the vehicle.
Electronic keys
• Operating the smart entry & start
system (→P. 1 3 0 )
• Operating the wireless remote con-
trol function
Mechanical keys
Key number plate
Card key (electronic key) (if
equipped)
Operating the smart entry & start sys-
tem (→P. 1 3 0 )
Locks the doors (→P. 118)
Closes the windows and moon roof
*
(→P. 118)
Unlocks the doors (→P. 118)
Opens the windows and moon roof
*
(→P. 118)
Opens the trunk (→P. 1 2 6 )
*: These settings must be customized at any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Keys
The keys
1
2
3
4
Wireless remote control
1
2
3
4
5
Page 118 of 588
118
IS250_EE(OM53C51E)3-2. Opening, closing and locking the doors and trunk
The vehicle can be locked and unlocked using the entry function, wireless
remote control or door lock switches.
◆Entry function (if equipped)
Carry the electronic key to enable this function.
Grip the handle to unlock the
doors.
Make sure to touch the sensor on the
back of the handle.
The doors cannot be unlocked for
3 seconds after the doors are locked.
To u c h t h e l o c k s e n s o r ( i n d e n t a -
tion on the upper part of the door
handle) to lock the doors.
◆Wireless remote control
Locks all the doors
Press and hold to close the windows
and moon roof.*
Unlocks all the doors
Press and hold to open the windows
and moon roof.*
*
: These settings must be customized at
any authorized Lexus dealer or
repairer, or another duly qualified
and equipped professional.
Doors
Unlocking and locking the doors from the outside
1
2
1
2