Page 66 of 573

661-1. For safe use
IS350/250_U (OM53758U)
CAUTION
■When installing a booster seat
To prevent the belt from going into ALR lock mode, do not fully extend the shoulder
belt. ALR mode causes the belt to tighten only. This could cause injury or discomfort to
the child. ( P. 3 2 )
■When installing a child restraint system
Follow the directions given in the child restra int system installation manual and fix the
child restraint system securely in place.
If the child restraint system is not correctl y fixed in place, the child or other passengers
may be seriously injured or even killed in th e event of a sudden braking or an accident.
●If the driver’s seat interferes with the child
restraint system and prevents it from being
attached correctly, attach the child restraint
system to the right-hand rear seat.
●Adjust the front passenger seat so that it does
not interfere with the child restraint system.
●Only put a forward-facing child restraint sys-
tem on the front seat when unavoidable.
When installing a forward-facing child
restraint system on the front passenger seat,
move the seat as far back as possible even if
the “AIR BAG OFF” indicator light is illumi-
nated. Failure to do so may result in death or
serious injury if the airbags deploy (inflate).
Page 67 of 573

671-1. For safe use
1
For safety and security
IS350/250_U (OM53758U)
CAUTION
■When installing a child restraint system
●When using the LATCH anchors for a child restraint system, move the seat as far
back as possible, with the seatback close to the child restraint system.
●When a booster seat is installed, always ensure that the shoulder belt is positioned
across the center of the child’s shoulder. The belt should be kept away from the child’s
neck, but not so that it could fall off the ch ild’s shoulder. Failing to do so may result in
death or serious injury in the event of sudden braking, sudden swerving or an acci-
dent.
●Ensure that the belt and plate are securely locked and the seat belt is not twisted.
●Shake the child restraint system left and right, and forward and backward to ensure
that it has been securely installed.
●After securing a child restraint system, never adjust the seat.
●Follow all installation instructions provided by the child restraint system manufacturer.
■Do not use a seat belt extender
If a seat belt extender is used when installing a child restraint system, the seat belt will
not securely hold the child restraint system, which could cause death or serious injury
to the child or other passengers in the even t of a sudden braking, sudden swerving or
an accident.
■To correctly attach a child re straint system to the anchors
When using the LATCH anchors, be sure that there are no foreign objects around the
anchors and that the seat belt is not caught behind the child restraint system. Make sure
the child restraint system is securely attached , or it may cause death or serious injury to
the child or other passengers in the event of a sudden braking, sudden swerve or an
accident.
Page 107 of 573

1063-2. Opening, closing and locking the doors and trunk
IS350/250_U (OM53758U)
The door cannot be opened from inside
the vehicle when the lock is set. Unlock
Lock
These locks can be set to prevent chil-
dren from opening the rear doors. Push
down on each rear door switch to lock
both rear doors.
The following functions can be set or canceled:
For instructions on customizing, refer to P. 525.
Rear door child-protector lock
1
2
Automatic door locking and unlocking systems
FunctionOperation
Speed linked door locking function
All doors are automatically locked when
vehicle speed is approximately 12 mph
(20 km/h) or higher.
Shift position linked door locking function
All doors are automatically locked when
shifting the shift lever to position other
than P.
Shift position linked door unlocking func-
tionAll doors are automatically unlocked
when shifting the shift lever to P.
Driver's door linked door unlocking func-
tionAll doors are automatically unlocked
when driver’s door is opened.
Page 109 of 573
1083-2. Opening, closing and locking the doors and trunk
IS350/250_U (OM53758U)
CAUTION
■To prevent an accident
Observe the following precautions while driving the vehicle.
Failure to do so may result in a door opening and an occupant being thrown out of the
vehicle, resulting in death or serious injury.
●Ensure that all doors are properly closed and locked.
●Do not pull the inside handle of the doors while driving.
Be especially careful with the front doors, as the doors may be opened even if the
inside lock buttons ar e in locked position.
●Set the rear door child-protector locks when children are seated in the rear seats.
Page 113 of 573
1123-2. Opening, closing and locking the doors and trunk
IS350/250_U (OM53758U)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■Before driving
●Make sure that the trun k lid is fully closed. If the trunk lid is not fully closed, it may
open unexpectedly while driving and hit ne ar-by objects or luggage in the trunk may
be thrown out, causing an accident.
●Do not allow children to play in the trunk.
If a child is accidentally locked in the trunk, they could suffer from heat exhaustion,
suffocation or other injuries.
●Do not allow a child to open or close the trunk lid.
Doing so may cause the trunk lid to open unexpectedly, or cause the child’s hands,
head, or neck to be caught by the closing trunk lid.
■Important points while driving
Never let anyone sit in the trunk. In the even t of sudden braking or a collision, they are
susceptible to death or serious injury.
Page 123 of 573
1223-3. Adjusting the seats
IS350/250_U (OM53758U)
CAUTION
Observe the following precautions. Failure to do so may result in death or serious injury.
■When folding the rear seatbacks down
●Do not fold the seatbacks down while driving.
●Stop the vehicle on level ground, set the parking brake and shift the shift lever to P.
●Do not allow anyone to sit on a folded seatback or in the trunk while driving.
●Do not allow children to enter the trunk.
■After returning the rear seatback to the upright position
●Check that the seat belts are not twisted or caught in the seatback.
●Make sure that the seatback is securely
locked in position by lightly pushing it back
and forth.
If the seatback is not securely locked, the red
marking will be visible on the seatback lock
release knob. Make sure that the red marking
is not visible.
Page 138 of 573
137
3
Operation of each component
IS350/250_U (OM53758U)3-5. Opening, closing the windows and moon roof
The power windows can be opened and closed using the switches.
Operating the switch moves the windows as follows:
Closing
One-touch closing
*
Opening
One-touch opening
*
*
: To stop the window partway, operate the switch in the opposite direction.
Press the switch to lock the passenger
window switches.
The indicator will come on.
Use this switch to prevent children from
accidentally opening or closing a pas-
senger window.
Power windows
Opening and closing procedures
1
2
3
4
Window lock switch
Indicator
Page 140 of 573

1393-5. Opening, closing the windows and moon roof
3
Operation of each component
IS350/250_U (OM53758U)
■Door lock linked window operation
●The power windows can be opened and closed using the mechanical key.*( P. 4 8 8 )
●The power windows can be opened us ing the wireless remote control.* ( P. 1 0 3 )
*: These settings must be customized at your Lexus dealer.
■When the battery is disconnected
The window lock switch is disabled. If nece ssary, press the window lock switch after
reconnecting the battery.
■Power windows open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in the instru-
ment cluster when the engine switch is turned off and the driver’s door is opened with the
power windows open.
■Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: P. 5 2 5 )
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■Closing the windows
●Check to make sure that all passengers do not have any part of their body in a posi-
tion where it could be caught when a window is being operated.
●Do not allow children to operate the power windows.
Closing a power window on someone can cause serious injury, and in some
instances, even death.
■Jam protection function
●Never use any part of your body to intentio nally activate the jam protection function.
●The jam protection function may not work if something gets caught just before the
window fully closes.