2009 Lexus IS250 stop start

Finish
AIR CONDITIONING
261
(c) Rear window and outside rear view
mirror defogging
To turn the electric rear window and
outside rear view mirror defogger on,
push the button above.
The “ENGINE START STOP” switch must
be in IGNITION ON mode.
The thin heater wires on the inside of the
rear window and the heater panels in the
outside rear view mirrors will quickly clear
the surface.
Keep your hands off the mirror faces when
the system is on.
The indicator light is on when the defogger
is operating.
CAUTION
When the outside rear view mirror de-
foggers are on, do not touch the out-
side surface of the rear view mirror as
it can become very hot and burn you.
The system will automatically shut off
when the defogger has operated about 15
minutes.
If further defrosting or defogging is de-
sired, simply actuate the switch again.
When the surface has cleared, push the
button once again to turn the defogger off.
Continuous use may cause the battery to
discharge, especially during stop−and− go
driving. The defogger is not designed to
dry rain water or to melt snow.
If the outside rear view mirrors are heavily
coated with ice, use a spray de −icer before
operating the system.
NOTICE
DWhen cleaning the inside of the
rear window, be careful not to
scratch or damage the heater wires
or connectors.
DTo prevent the battery from being
discharged, turn the switch off
when the engine is not running.
IS F/350/250_Navi_U
(L/O 0808)

Finish
AIR CONDITIONING
267
(h) Checking and replacing the air
conditioning filter
The air conditioning filter must be
cleaned or changed regularly to main-
tain air conditioning efficiency.
DRemoval method
1. Set the air conditioning system to
RECIRCULATED AIR mode.
The air conditioning filter case cannot be
removed in the OUTSIDE AIR mode.
2. Turn the “ENGINE START STOP”
switch off.
When you replace the filter, be sure to turn
off the fan.
3. Open the glove box. Lift and remove
the partition.
4. Remove the filter cover.
5. Remove the filter case.
IS F/350/250_Navi_U
(L/O 0808)

Finish
REAR VIEW MONITOR SYSTEM
272
The rear view monitor system assists
the driver by displaying an image of the
view behind the vehicle while backing
up. The image is displayed in reverse
on the screen. This allows the image to
appear in the same manner as that of
the rear view mirror.
To display the rear view image on the
screen, shift the shift lever to “R” (auto-
matic transmission) or reverse (manual
transmission) when the “ENGINE
START STOP” switch is in IGNITION ON
mode.
If you move the shift lever out of the “R”
(automatic transmission) or reverse
(manual transmission), the screen returns
to the previous screen. Operating another
function of the navigation system will dis-
play another screen.
Vehicles with Lexus parking assist−sen-
sor — when the Lexus parking assist −
sensors are turned on and an obstacle is
detected in front of or behind your ve-
hicle, a warning appears on the right top
of the rear view monitor. For details, see
“Lexus parking assist −sensor” on page
278.
The rear view monitor system is a supple-
ment device intended to assist back up.
When backing up, be sure to check behind
and all around the vehicle visually.
CAUTION
DNever depend on the rear view
monitor system entirely when
backing up. Always make sure
your intended path is clear.
Use caution, just as you would
when backing up any vehicle.
DNever back up while looking only at
the screen. The image on the
screen is different from actual
conditions. Depicted distances
between objects and flat surfaces
will differ from actual distance. If
you back up while looking only at
the screen, you may hit a vehicle, a
person or an object. When backing
up, be sure to check behind and all
around the vehicle visually and
with mirrors before proceeding.
DDo not use the system when the
trunk is not completely closed.
DIf the back of the vehicle is hit, the
position and mounting angle of the
camera may change. Be sure to
have the camera’s position and
mounting angle checked at your
Lexus dealer.
DAs the camera has a water proof
construction, do not detach, disas-
semble or modify it. This may
cause incorrect operation.
DIf the temperature changes rapidly,
such as when hot water is poured
on the vehicle in cold weather, the
system may not operate normally.
IS F/350/250_Navi_U
(L/O 0808)
Rear view monitor system
—

Finish
LEXUS PARKING ASSIST−SENSOR
278
The Lexus parking assist−sensor is a
warning system used when parking the
vehicle at low speed (e.g. into a garage).
It uses an ultrasonic sensor, which
checks the approximate distance to an
obstacle. It will inform you of the
approximate distance to an obstacle by
displaying information on the multi −in-
formation display and the screen, and
with beeping sounds.
1Front corner sensors
There is one of these installed on each cor-
ner of the front bumper, they inspect ob-
stacles and will sound a warning depend-
ing on the distance to the obstacle. (See
“ — Front corner sensors” on page 280.)
2Rear corner sensors
There is one of these installed on each cor-
ner of the rear bumper, they inspect ob-
stacles and will sound a warning depend-
ing on the distance to the obstacle. (See
“ — Rear corner sensors” on page 281.)
3Back sensors
There are two of these installed near the
center of the rear bumper, they inspect ob-
stacles and will sound a warning depend-
ing on the distance to the obstacle. (See
“ — Back sensors” on page 282.)
To use the parking assist −sensor, with
the “ENGINE START STOP” switch in
IGNITION ON mode, push “
”or“”
of the satellite switch to select the park-
ing assist− sensor and then push the
ON/OFF button. Selecting the parking
assist− sensor and pushing the ON/OFF
button of the satellite switch again will
turn the parking assist −sensor off.
When you turn on the parking assist −sen-
sor, the indicator light in the instrument
cluster comes on and a beep sounds for
one second, indicating that the parking as-
sist− sensor is turned on.
The parking assist −sensor will remain on
even after turning the “ENGINE START
STOP” switch to OFF and then to IGNI-
TION ON mode with the main switch on.
However, a beep does not sound at this
time.
If an error is detected in the Lexus parking
assist− sensor while self −checking, beeps
sound and a warning appears in the multi −
information display and on the screen. For
details, see “ — Lexus parking assist −sen-
sor failure warning” on page 285.
IS F/350/250_Navi_U
(L/O 0808)
Lexus parking
assist− sensor —

Finish
APPENDIX
305
There are two types of areas available
for route guidance. In one type of area,
primarily around metropolitan centers,
detailed route guidance is available for
the entire area. In the other type of area,
all roads are displayed on the map but
route guidance is limited. The naviga-
tion route might lack precision because
the data (no right turns, one−way traf-
fic, etc.) is not complete. It is still pos-
sible to reach the destination by follow-
ing the arrow direction and distance as
shown on the bottom left of the screen.
The arrow points in the direction of the
destination. The distance shown is as
measured in a straight line from the cur-
rent vehicle position to the destination
area.
In order to provide you with as accurate
map information as possible, we are al-
ways gathering information such as on
road repairs and carrying out on −site in-
vestigations. However, the names of
roads, streets, facilities, and their locations
frequently change. In some places,
construction on roads may be in progress.
For that reason, information on some
areas in this system might be different from
the actual location.
The map database is normally updated
once a year. Contact your Lexus dealer for
information about the availability and pric-
ing of an update. When changing the map DVD
−ROM, we
recommend using your Lexus dealer.
To change the map DVD −ROM yourself,
follow these instructions carefully.
Do not use any tolls other than in −vehicle
tools.
For the storage location of the in −vehicle
tools, refer to the “Owner’s Manual” .
1. Set the “ENGINE START STOP”
switch in ACCESSORY mode.
2. Insert the 2 picks provided in the in−
vehicle tools into the holes on both
sides of the clock panel at a slight out-
ward angle until you hear a “click”. Re-
move the panel.
Do not break the connecter of the clock
panel.
IS F/350/250_Navi_U
(L/O 0808)
— Changing the map
DVD− ROM