Lexus IS300 2003 Basic Functions / LEXUS 2003 IS300 (OM53439U) Service Manual

SWITCHES
28
HEADLIGHT SWITCH
SS12002a
To turn the lights on, twist the knob on the end of the lever.
FIRST CLICKSTOP: Only the parking, tail, license plate, side
marker and instrument panel lights turn on.
SECOND CLICKSTOP: Headlights also turn on.
THIRD CLICKSTOP (ºAUTOº): The headlights and all other
lights automatically turn on depending on the darkness of the
surroundings.*
Manually twist the knob to the second clickstop to turn on
the headlights if they are needed immediately when
entering a dark tunnel, parking structure, etc.
When the headlight switch is turned to the first or second
clickstop, the brightness of the instrument cluster will be
reduced slightly unless the instrument panel light control knob
is turned fully on.
NOTE: *The operating condition or sensitivity can be changed. Ask your Lexus dealer for details.
SV12024
The automatic light control sensor is on top of the driver's side
instrument panel.
Do not place anything on the instrument panel, and/or do not
affix anything on the windshield to block this sensor.
When the headlights come on, the lights automatically turn off
about 30 seconds after any of the doors is opened and closed
with the ignition key turned to the ºACCº or ºLOCKº position\
.*
When only the taillights come on: The lights automatically turn
off with the driver's door opened and the ignition key turned to
the ºACCº or ºLOCKº position.
To turn them on again, turn the ignition key to the ºONº position,
or turn the headlight switch off and then twist the knob until the
first or second clickstop. If you are going to park for over one
week, make sure the headlight switch is off.
NOTE: *The time before turning off the lights can be changed. Ask your Lexus dealer for details.
2003 IS300 from Aug. '02 Prod. (OM53439U)

SWITCHES
29
Daytime Running Light System
The headlights turn on at reduced intensity when the parking
brake is released with the engine started, even with the light
switch in the ºOFFº position. They will not go off until the
ignition switch is turned off.
To turn on the other exterior lights and instrument panel lights,
twist the knob to the first clickstop.
Twist
the knob to the second clickstop to turn on the headlights
to full intensity for driving at night.
When setting the knob to the third clickstop (ºAUTOº), the
headlights will automatically adjust to full intensity and/or turn
on the other lights depending on the darkness of the
surroundings. Likewise, as the surroundings become brighter,
the headlights will turn to reduced intensity, ultimately turning
off the other lights.
NOTICE
To prevent the battery from being discharged, do not leave the lights on longer than necessary when theengine is not running.
Automatic headlight leveling system
SV12022
The headlight beam level is always maintained automatically
at the proper level in all loading conditions so that your
headlights do not dazzle other road users.
If this system fails, the warning light in the instrument cluster
comes on. If this occurs, have your vehicle checked by Lexus
dealer.
2003 IS300 from Aug. '02 Prod. (OM53439U)

SWITCHES
30
HEADLIGHT DIMMER AND TURNSIGNAL SWITCH
SV12010
For high beam, push the lever forward. Pull it back for low
beam. For the headlight flasher, pull it further back.
A blue light in the instrument cluster indicates high beam or
headlight flasher is on.
The headlight flasher works even when the headlight switch is
off.
SV12011
For signaling turns, move the lever up or down in the
conventional manner.
The ignition key must be in the ºONº position.
The turn signal is self±cancelling after a turn, but after a lane
change, you may have to cancel it by hand. You can also signal
a lane change by moving the turn signal lever partway and
holding it there.
If the green light in the instrument cluster flashes faster than
normal, it indicates that the front or rear turn signal bulb has
burned out. If this indicator light does not come on, the fuse
or the indicator light itself has probably failed.
2003 IS300 from Aug. '02 Prod. (OM53439U)

SWITCHES
31
FRONT FOG LIGHT SWITCH
SV12016
To turn on the front fog lights, turn the switch to the ºONº
position. The front fog lights come on only when the
headlights are on low beam.
REAR FOG LIGHT SWITCH
SV12017
To turn on the rear fog lights, push the switch. They will
come on when the headlights are turned on.
To turn off the lights, push the switch again. They will go out
when the headlight switch is in the ºOFFº position. After the
rear fog and all other lights are turned off, the rear fog light do
not come on even if you turn on the tail or headlight switch
again.
When the rear fog lights are on, the indicator lights on the upper
side of the rear fog light switch lights up.
2003 IS300 from Aug. '02 Prod. (OM53439U)

SWITCHES
32
WINDSHIELD WIPER AND WASHERSWITCH
SS12013b

1Interval adjuster 2Washer on
To turn the wipers on, move the lever down until you reach
the desired speed setting.
The ignition key must be in the ºONº position.
There are 3 settings:
ºINTº position: Intermittent operation
ºLOº position: Low speed operation
ºHIº position: High speed operation
Twist the interval adjuster upward to increase the wiping
time interval between sweeps, and downward to decrease
it.
The wiper lever must be in the ºINTº position. For mist wiper operations (a single wipe), pull the lever
toward you and release it.
To make the washer squirt, push the button on the end of
the lever.
For information on adding washer fluid, see ºAdding washer
fluidº on page 354.
Some m
odels: If you push the windshield washer switch with
the headlights on, the headlight cleaner operates once
automatically.
In cold weather, warm the windshield with the defroster before
using the washer. This will help prevent icing, which could
block your vision.
The rear window and outside rear view mirror defogger
automatically turns on when you operate the wipers.
NOTICE
Do not operate the wipers if the windshield is dry. It may scratch the glass.
2003 IS300 from Aug. '02 Prod. (OM53439U)

SWITCHES
33
REAR WINDOW WIPER ANDWASHER SWITCH
SV12018

1Washer on during wiping 2Washer on
To turn the wipers on, twist the knob at the end of the lever.
The ignition key must be in the ºONº position.
There are 2 settings:
ºINTº position: Intermittent operation
ºONº position: Low speed operation
To make the washer squirt, twist the knob downward to
position 2.
To make the washer squirt while operating in ºONº
position, twist the knob upward to position 1.
The knob automatically returns from these positions after you
release it. For information on adding washer fluid, see ºAdding washer
fluidº on page 354.
NOTICE
Do not operate the rear window wiper if the rear window
is dry. It may scratch the glass.
2003 IS300 from Aug. '02 Prod. (OM53439U)

SWITCHES
34
HEADLIGHT CLEANER SWITCH
SV12007
To spray fluid on the headlights, push the switch with the
headlights on.
The ignition key must be in the ºONº position.
Check the fluid level frequently as headlight cleaner uses fluid
a lot. For information on adding washer fluid, see ºAdding
washer fluidº on page 354.
Some models: If you push the windshield washer switch with
the headlights on, the headlight cleaner operates once
automatically.
NOTICE
Do not turn the headlight cleaner on with the washer
fluid tank empty. It may cause the cleaner motor tooverheat.
REAR WINDOW AND OUTSIDE
REAR VIEW MIRROR DEFOGGER,
AND WINDSHIELD WIPER DEICER SWITCH
SL12005
To turn the electric rear window defogger on, push the
switch.
The ignition key must be in the ºONº position.
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
switch is on. An indicator light is on when the defogger is
operating.
Some models: the windshield wiper deicers are optionally
equipped to deice the windshield wiper blades by operating
simultaneously with defogger.
2003 IS300 from Aug. '02 Prod. (OM53439U)

SWITCHES
35
The system will automatically shut off when the defogger has
operated about 15 minutes.
CAUTION
Since
the mirror surfaces can get hot, do not touch them
when the switch is on or operate the wipers.
If further defrosting or defogging is desired, simply actuate the
switch again. When the surface has cleared, push the switch
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.
NOTICE
When cleaning the inside of the rear window, be careful not to scratch or damage the heater wires orconnectors.
To prevent the battery from being discharged, do notoperate the defogger continuously longer thannecessary.
POWER WINDOW SWITCHES
SV12019a

1For driver's window
2For front passenger's window
3For left rear window
4For right rear window
To raise or lower the windows, use the switch on each
door. The passengers' windows can also be controlled by
the switches on the driver's door.
The power windows work when the ignition key is in the ºONº
position.
2003 IS300 from Aug. '02 Prod. (OM53439U)

SWITCHES
36
12L010
Operating the driver's window
To raise or lower the window, pull the switch halfway up
or push it halfway down.
Automatic operation: To fully raise or lower the window
automatically, pull the switch fully up or push it fully down.
To stop the window partway, lightly push or pull the switch in
the opposite direction and then release it.
Key off operation: Even if the ignition key is turned to the
ºACCº or ºLOCKº position, the window can be operated until
either of the front doors is opened (or for about 45 seconds).
Operating the passengers' windows
To lower the window, push the switch down. Pull it up to
raise the window. The window moves as long as the
switch is operated.
Operating the window lock switch
SV12009a
With the window lock switch pressed in, only the driver's
window can be raised or lowered.
Jam protection function
During automatic raising operation or key off raising operation,
the window stops and is lowered if something gets caught
between the window and window frame.
If the window receives a strong impact, this function may work
even if nothing is caught.
2003 IS300 from Aug. '02 Prod. (OM53439U)

SWITCHES
37
CAUTION
To avoid serious personal injury, you must do the
following.
Before you close the power windows, always make
sure there is nobody around the power windows. You
must also make sure the heads, hands and other
parts of the bodies of all occupants are kept
completely inside the vehicle. If someone's neck,
head or hands get caught in a closing window, it
could result in a serious injury. When anyone closes
the power windows, make sure he or she operates the
windows safely.
 When small children are in the vehicle, never let them
use the power window switches without supervision.
Use the window lock switch to prevent them from
making unexpected use of the switches.
 Never leave small children alone in the vehicle,
especially with the ignition key still inserted. They
could use the power window switches and get
trapped in a window. Unattended children can be
involved in serious accidents.
 Never try jamming any part of your body to make the
jam protection function work intentionally.
 The jam protection function may not work if
something gets caught just before the window fully
closed.
EMERGENCY FLASHER SWITCH
SV12023
To turn on the emergency flashers, push the switch.
All the turn signal lights will flash. The emergency flashers will
work with the engine running or off and with or without the
ignition key.
Turn on the emergency flashers to warn other drivers if you
must stop your vehicle where it might be a traffic hazard.
Always pull your vehicle as far off the road as possible.
The turn signal light switch will not work when the emergency
flashers are in operation.
NOTICE
To prevent the battery from being discharged, do not
leave the switch on longer than necessary when theengine is not running.
2003 IS300 from Aug. '02 Prod. (OM53439U)