Lexus IS250C 2010 Repair Manual

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1-3. Adjustable components (seats, mirrors, steering wheel)
10_IS250C/350C_U
Seat position memory (front passenger’s seat)∗
Your preferred front passenger seat position can be memorized and
recalled with the touch of a button.
Three different seat positions can be entered into memory.
■ Entering a position to memory
Switch to IGNITION ON mode.
Adjust the front passenger seat to the desired position.
Push the “SET” button, then
within 3 seconds push button
“1”, “2” or “3” until the signal
beeps.
If the selected button has
already been preset, the previ-
ously recorded position will be
overwritten.
■Recalling the memorized position
Vehicles with an automatic transmission: Check that the shift lever is
set in P.
Vehicles with a manual transmission: Check that the parking brake is
set.
Push button “1”, “2” or “3” to
recall the memorized position.
STEP1
STEP2
STEP3
∗: If equipped

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1-3. Adjustable components (seats, mirrors, steering wheel)
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Before driving
10_IS250C/350C_U
■Operating the seat position memory after turning the “ENGINE START STOP”
switch OFF
Memorized position can be activated up to 180 seconds after the front passenger
door is opened, even after turning the “ENGINE START STOP” switch OFF.
■To cancel seat position recall
Perform any of the following operations.
●Push the “SET” button.
●Push button “1”, “2” or “3”.
●Adjust the seat position using the switches.
■If the battery is disconnected
The memorized positions are erased when the battery is disconnected.
CAUTION
■Seat adjustment caution
Take care during seat adjustment that the seat does not strike the rear passenger or
child restraint system.

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1-3. Adjustable components (seats, mirrors, steering wheel)
10_IS250C/350C_U
Head restraints
Head restraints are provided for all seats.
Vertical adjustment (front seats)Up
Pull the head restraints up.
Down
Push the head restraint down
while pushing the lock release
button.
Folding operation (rear seats)
Pull the lever.
When reversing etc., folding
down the head restraints
enables a better view of the area
behind the vehicle.
To return the head restraints,
raise them by hand.
Lock release button

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1-3. Adjustable components (seats, mirrors, steering wheel)
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Before driving
10_IS250C/350C_U
■Removing the head restraints (front seats)
■Installing the head restraints (front seats)
■Adjusting the height of the head restraints (front seats)Pull the head restraint up while pressing the
lock release button.
Align the head restraint with the installation
holes and push it down to the lock position.
Press and hold the lock release button when
lowering the head restraint.
Make sure that the head restraints are
adjusted so that the center of the head
restraint is closest to the top of your ears.

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1-3. Adjustable components (seats, mirrors, steering wheel)
10_IS250C/350C_U
CAUTION
Observe the following precautions when the head restraints are in use. Failure to do
so may result in death or serious injury.
■Front head restraints
●Use the head restraints designed for each respective seat.
●Adjust the head restraints to the correct position at all times.
●Do not drive with the head restraints removed.
■Rear head restraints
●Do not sit in the rear seats with the head restraints in the folded position.
●Do not fold the head restraints when passengers are seated in the rear seats.
●Do not allow passengers to sit on the folded head restraints.
NOTICE
■Rear head restraints
Do not press down excessively on the folded head restraints as doing so may cause
damage.

65
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1-3. Adjustable components (seats, mirrors, steering wheel)
Before driving
10_IS250C/350C_U
Seat belts
Make sure that all occupants are wearing their seat belts before driving the
vehicle.
■Correct use of the seat belts
●Extend the shoulder belt so
that it comes fully over the
shoulder, but does not come
into contact with the neck or
slide off the shoulder.
● Position the lap belt as low as
possible over the hips.
● Adjust the position of the
seatback. Sit up straight and
well back in the seat.
● Do not twist the seat belt.
■ Fastening and releasing the seat belt
Fastening the belt
Push the tab into the buckle until
a clicking sound is heard.
Releasing the belt
Press the release button.
Release button

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1-3. Adjustable components (seats, mirrors, steering wheel)
10_IS250C/350C_U
Front seat belt guide
When fastening a front seat belt,
always ensure that it passes
through the seat belt guide.When entering or exiting the
rear seats, release the seat belt
from the guide.
Rear seat belt holder & guide
■ Rear seat belt holder
When the rear seat belts are not in
use, secure the belts in the holder
position. When in use, release the
belts from the holder position.
■ Rear seat belt guide
If the shoulder belt sits close to the occupant’s neck, secure the seat belt
in the guide position.

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1-3. Adjustable components (seats, mirrors, steering wheel)
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Before driving
10_IS250C/350C_U
Seat belt pretensioners (front seats)The pretensioner helps the seat
belt to quickly restrain the occu-
pant by retracting the seat belt
when the vehicle is subjected to
certain types of severe frontal colli-
sion.
The pretensioner may not activate
in the event of a minor frontal
impact, a side impact or a rear
impact.
Pre-collision seat belts (front seats of vehicles with pre-collision system)
If the pre-collision sensor detects that a collision is unavoidable, the pre-
collision system will retract the seat belt, thus enhancing the effectiveness
of the seat belt pretensioner in a crash.
The same will happen if the driver makes an emergency braking or loses con-
trol of the vehicle. ( →P. 212)
■Emergency locking retractor (ELR)
The retractor will lock the belt during a sudde n stop or on impact. It may also lock if
you lean forward too quickly. A slow, easy motion will allow the belt to extend so that
you can move around fully.
■Automatic locking retractor (ALR)
When a passenger's shoulder belt is completely extended and then retracted even
slightly, the belt is locked in that position and cannot be extended. This feature is
used to hold the child restraint system (CRS) firmly. To free the belt again, fully
retract the belt and then pull the belt out once more. ( →P. 1 2 0 )

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■Pregnant women
■People suffering illness
Obtain medical advice and wear the seat belt in the proper way.
■Child seat belt usage
The seat belts of your vehicle are principally designed for persons of adult size.
●Use a child restraint system appropriate for the child, until the child becomes
large enough to properly wear the vehicle's seat belt. ( →P. 116)
●When the child becomes large enough to properly wear the vehicle's seat belt,
follow the instructions on P. 65 regarding seat belt usage.
■Replacing the belt after the pr etensioner has been activated
If the vehicle is involved in multiple collisions, the pretensioner will activate for the
first collision, but will not activate for the second or subsequent collisions.
■Seat belt extender Obtain medical advice and wear the seat belt
in the proper way. (
→P. 6 5 )
Women who are pregnant should position
the lap belt as low as possible over the hips in
the same manner as other occupants. Extend
the shoulder belt completely over the shoul-
der and position the belt across the chest.
Avoid belt contact over the rounding of the
abdominal area.
If the seat belt is not worn properly, not only a
pregnant woman, but also the fetus could suf-
fer death or serious injury as a result of sud-
den braking or a collision.
If your seat belts cannot be fastened securely
because they are not long enough, a person-
alized seat belt extender is available from
your Lexus dealer free of charge.

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Before driving
10_IS250C/350C_U
CAUTION
Observe the following precautions to reduce the risk of injury in the event of sudden
braking or an accident.
Failing to do so may cause death or severe injury.
■Wearing a seat belt
●Ensure that all passengers wear a seat belt.
●Always wear a seat belt properly.
●Each seat belt should be used by one person only. Do not use a seat belt for more
than one person at once, including children.
●Lexus recommends that children be seated in the rear seat and always use a seat
belt and/or an appropriate child restraint system.
●Do not recline the seat any more than necessary to achieve a proper seating
position. The seat belt is most effective when the occupants are sitting up straight
and well back in the seats.
●Do not wear the shoulder belt under your arm.
●Always wear your seat belt low and snug across your hips.
■Child restraint lock function belt precaution
Do not allow children to play with the child restraint lock function belt. If the belt
becomes twisted around a child’s neck, it will not be possible to pull the belt out
leading to choking or other serious injuries that could result in death. If this occurs
and the buckle cannot be unfastened, scissors should be used to cut the belt.
■Seat belt pretensioners
●Do not place anything, such as a cushion, on the front passenger’s seat. Doing so
will disperse the passenger’s weight, which prevents the sensor from detecting
the passenger’s weight properly. As a result, the seat belt pretensioner for the
front passenger’s seat may not activate in the event of a collision.
●If the pretensioner has activated, the SRS warning light will come on. In that case,
the seat belt cannot be used again and must be replaced at your Lexus dealer.