2003 Lexus IS300 Basic Functions / LEXUS 2003 IS300 OWNER'S MANUAL (OM53439U)

KEYS AND DOORS
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ENGINE IMMOBILISER SYSTEM
SV11007
The engine immobiliser system is a theft prevention
system. When you insert the key in the ignition switch, the
transponder chip in the key's head transmits an electronic
code to the vehicle. The engine will start only when the
electronic code in the chip corresponds to the registered
ID code for the vehicle.
The system is automatically set when the key is removed from
the ignition switch. At this time, the security indicator light
flashes. When you insert the key in the ignition switch, the
security indicator light goes out and the system is canceled
automatically, which enables the engine to start.
For your Lexus dealer to make you a new key with built±in
transponder chip, your dealer will need your key number and
master key or the flat key. However, there is a limit to the
number of additional keys your Lexus dealer can make for you. The transponder chip of the flat key is in its key case. You can
cancel the engine immobiliser system using the flat key. (For
details, see ºFlat keyº on page 9.)
If you make your own duplicate key, you will not be able
to cancel the system or start the engine.
For vehicles sold in U.S.A.
FCC ID: MOZ RI±4ATY
MADE IN JAPAN
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference,
and (2) this device must accept any interference
received, including interference that may cause
undesired operation.
CAUTION
Changes or modifications not expressly approved by
the party responsible for compliance could void the
user's authority to operate the equipment.
2003 IS300 from Aug. '02 Prod. (OM53439U)

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For vehicles sold in Canada
This device complies with RSS±210 of Industry
Canada.
Operation is subject to the following two conditions:
(1) This device may not cause interference, and (2)
this device must accept any interference, including
interference that may cause undesired operation of
the device.
WIRELESS REMOTE CONTROL*
SV11008

Sedan
1Locking the doors and sounding an alarm
2Unlocking the doors
3Indicator light
4Unlocking the trunk lid
2003 IS300 from Aug. '02 Prod. (OM53439U)

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SV11012a

SportCross
1Locking the doors
2Unlocking the doors
3Indicator light
4Sounding an alarm
NOTE: *This feature can be set inoperative as vehicle theftdeterrent measure in case of the loss of the wireless remote
control key. Ask your Lexus dealer for details.
When you operate any button on the key, push it slowly and
surely. At this time, the indicator light on the key grip flashes
once.
The operational range of the wireless remote control is
approximately 1 meter (3 ft.). The effective range may vary
with different conditions. To activate the wireless remote
control w ithout fail, do it approximately 1 meter (3 ft.) from your
Lexus. In the following cases, the battery in the key may be
discharged. If this is a case, replace it using a special
screwdriver.

The remote control does not work.
 The operational range of wireless remote control becomes
extremely short.
 The indicator light on the key is dimmed or does not come
on.
For the replacement of the battery, see ºReplacing the batteryº
on page 18. You can also have the battery of the key replaced
by your Lexus dealer.
If you lose the wireless key, contact your Lexus dealer as soon
as possible to avoid the possibility of theft, or an accident.
You can use up to 4 wireless remote control keys for the same
vehicle. Contact your Lexus dealer for detailed information.
The wireless remote control key is an electronic
component. Observe the following instructions in order
not to cause damage to the key.
 Do not leave the wireless remote control key on places
where the temperature becomes high such as on the
dashboard.
 Do not disassemble it.
 Avoid knocking it hard against other objects or dropping it.
 Avoid putting it in water.
2003 IS300 from Aug. '02 Prod. (OM53439U)

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Locking/Unlocking the doors
When you push the ºLOCKº button on the key briefly, all
the doors will be locked from outside the vehicle.
At this time, one beep sounds* and the emergency flashers
flash once.** However, when you push the ºLOCKº button with
any door not closed securely, the buzzer sounds for 10
seconds.*** To stop the buzzer, close all the doors securely or
push the ºUNLOCKº button. If the key is in the ignition switch,
locking cannot be done.
Make sure all the doors are locked when you leave the vehicle.
Push the ºLOCKº button once again. If they were already
locked, one beep sounds and the emergency flashers will
flash.
NOTE: *The beep sound can be set not to sound. **The emergency flasher can be set not to flash. ***The buzzercan be set not to sound if a door is not closed securely. Askyour Lexus dealer for details.
NOTICE
Sedan only: Do not push the ºLOCKº button any longerthan 2 to 3 seconds. Pushing the button longeractivates an alarm. For details, see page 16.
When you push the ºUNLOCKº button, the driver's door
is unlocked. Pushing that button once again within 3
seconds from the first push, all other doors are also
unlocked.*
NOTE: *The 2±step unlocking function can be changed.Ask your Lexus dealer for details.
At this time, two beeps sound* and the emergency flashers
flash twice.** Together with the activation of unlocking, the
interior light comes on for 15 seconds if the interior light switch
is in ºDOORº position.*** However, this function does not
work when the ignition key is in the ºONº position. For further
information, see ºInterior lightsº on page 57.
You have 30 seconds to open a door after using the wireless
remote unlock feature.**** If a door is not opened by then, all
the doors will be automatically locked again.
Even if the ºLOCKº or ºUNLOCKº switch is kept pressed in, the
locking or unlocking operation is not repeated. Release the
button and then push again.
NOTE: *The beep sound can be set not to sound. **The emergency flashers can be set not to flash. ***The interiorlight can be set not to come on or the duration of lighting can
be changed. ****The time before automatic re±locking can be changed. Ask your Lexus dealer for details.
2003 IS300 from Aug. '02 Prod. (OM53439U)

KEYS AND DOORS
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Unlocking the trunk lid
SV11009b
When you keep the button pushed for about 1 second, you
can unlock the trunk lid.* One beep sounds.
This function does not work when the key is in the ignition
switch.
NOTE: *The operation method can be changed. Ask your Lexus dealer for details.
Sounding an alarm*
SV11010a

Sedan
When you push the ºPANICº button for about 2 to 3
seconds, an alarm sounds to deter any person trying to
break into or damage your vehicle.
If you want to stop the alarm, push any button.
This function does not work when the ignition key is in the ºONº
position.
NOTE: *The alarm can be set not to sound. Ask your Lexus
dealer for details.
2003 IS300 from Aug. '02 Prod. (OM53439U)

KEYS AND DOORS
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SV11013b

SportCross
When you push the ºPANICº button for about 1 second, an
alarm sounds to deter any person trying to break into or
damage your vehicle.
If you want to stop the alarm, push any button.
This function does not work when the ignition key is in the ºONº
position.
NOTE: *The alarm can be set not to sound. Ask your Lexus dealer for details.
For vehicles sold in U.S.A.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference,
and (2) this device must accept any interference
received, including interference that may cause
undesired operation.
NOTICE:
This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful
interference in a residential installation. This
equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful
interference to radio communications. However,
there is no guarantee that interference will not occur
in a particular installation. If this equipment does
cause harmful interference to radio or television
reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following
measures:
 Reorient or relocate the receiving antenna.
 Increase the separation between the equipment
and receiver.
2003 IS300 from Aug. '02 Prod. (OM53439U)

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Connect the equipment into an outlet on a circuit
different from that to which the receiver is
connected.
 Consult the dealer or an experienced radio / TV
technician for help.
FCC WARNING:
Changes or modifications not expressly approved
by the party responsible for compliance could void
the user's authority to operate the equipment.
For vehicles sold in Canada
Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this
device must accept any interference, including
interference that may cause undesired operation of
the device.
Replacing the battery
When you replace the battery, prepare a lithium battery
CR1616 or equivalent and a special screwdriver.
CAUTION
Special care should be taken that small children do not
swallow the removed battery or components.
NOTICE
When replacing the battery, be careful not to lose the components, screws and O±ring.
11L028±1
1. Remove the screw, and then the cover while pushing it in
the arrow direction.
2003 IS300 from Aug. '02 Prod. (OM53439U)

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11L029±1
2. Remove the module from the key frame.
11L030±1
3. Remove the 2 screws to take out the lid of the module.
4. Take out the discharged battery and put a new battery with
the positive side up.
NOTICE
Make sure the positive side and negative side of thebattery should be faced correctly.
Do not replace the battery with wet hands. Water may
cause unexpected rust.
Do not touch or move any components inside of the transmitter, or it may interfere with proper operation.
Be careful not to bend the electrode of the batteryinsertion and that dust or oils do not adhere to theinside of the module.
Take care not to lose the screws and O±ring.
5. Install the lid with the 2 screws.
NOTICE
Take care not to damage or bend the O±ring wheninstalling.
6. Install the module into the key frame and secure the cover
with the screw.
7. When pushing any switch on the wireless key, make sure
the indicator light comes on.
2003 IS300 from Aug. '02 Prod. (OM53439U)