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

SECTION 1 ± 1
7
INSTRUMENTS AND CONTROLS
Keys and doors
Keys8
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Engine immobiliser system 12
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Wireless remote control 13
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Doors 20
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Back door 22
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2003 IS300 from Aug. '02 Prod. (OM53439U)

KEYS AND DOORS
8
KEYS
SV11024

Sedan
SV11025

SportCross
1Master keys (black) ± These keys work in every lock.
For your Lexus dealer to make you a new key with
built±in transponder chip, your dealer will need an
original key to program the new one.
2Sub key (gray) ± The sub key will not open the trunk
and the glove box.
3Key number plate ± Keep the plate in a safe place
such as your wallet, not in the vehicle.
A transponder chip for engine immobiliser system has been
placed in the head of the master and sub keys. These chips
are needed to enable the system to function correctly, so be
careful not to lose these keys. If you make your own duplicate
key, you will not be able to cancel the system or start the
engine.
To protect items locked in the trunk or glove box when using
valet parking, leave the sub key with the attendant.
Since the doors and trunk lid can be locked without a key, you
should always carry a spare master key in case you
accidentally lock your keys inside the vehicle.
If you should lose your keys or if you need additional keys,
duplicates can be made by a Lexus dealer using the key
number.
We recommend writing down the key number and storing it in
a safe place.
2003 IS300 from Aug. '02 Prod. (OM53439U)

KEYS AND DOORS
9
Flat key
SV11020
Since a transponder chip is built in its key case, you can
start the engine with this key.
The flat key works in every lock.
A transponder chip for engine immobiliser system has been
placed in the key case of the flat key. This chip is needed to
enable the system to function correctly, so be careful not to
lose this key. If you make your own duplicate key, you will not
be able to cancel the system or start the engine.
Insert your key plate in its key case as shown. We recommend
that you always carry this with you for emergency use. Do not
leave it in your vehicle.
Starting the engine using a flat key
SV11011
1. Remove the key plate from the key case.
2. Insert the key plate into the ignition switch. The indicator
light keeps flashing.
3. Bring the key case closer to the ignition switch within 10
seconds as indicated by the arrow head. The indicator light
goes out. This means the engine immobiliser system is
automatically cancelled. (For details, see ºEngine immobiliser
systemºon page 12.) You can put the key case away then. You
cannot cancel the engine immobiliser system if 10 seconds
have past after you inserted the key plate. You need to remove
the key plate from the ignition switch and try it again from the
step 2.
4. Start the engine within 20 seconds after the security
indicator light goes out. You cannot start the engine if 20
seconds have past after the security indicator went off. You
need to remove the key plate from the ignition switch and try
it again from the step 2.
2003 IS300 from Aug. '02 Prod. (OM53439U)

KEYS AND DOORS
12
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)

THEFT DETERRENT
176
THEFT DETERRENT SYSTEM
SV17003

Sedan
SV17004

SportCross
To deter theft of the vehicle, this system is designed to
sound an alarm if any of the doors, trunk or hood is
forcibly unlocked or the battery terminal is disconnected
and then reconnected while the vehicle is locked.*
NOTE: *The system operating condition can be changed.Ask your Lexus dealer for details.
The alarm blows the horn intermittently and flashes the
headlights, tail lights and other exterior lights.
SV17002
Setting the system
1. Turn the ignition key to the ºLOCKº position and
remove it.
The engine immobiliser system causes the indicator light to
flash.
2003 IS300 from Aug. '02 Prod. (OM53439U)

STARTING AND DRIVING
227
IGNITION SWITCH WITH STEERINGLOCK
SS31002
ºSTARTº ± Starter motor on. The key will return to the
ºONº position when released.
For starting tips, see page 229.
ºONº ± Engine on and all accessories on.
This is the normal driving position.
NOTICE
Do not leave the key in the ºONº position if the engine
is not running. The battery will discharge and theelectronic ignition system could be damaged.
ºACCº ± Accessories such as the radio operate, but the
engine is off. If you leave the key in the ºACCº or ºLOCKº position and open
the driver's door, a buzzer will remind you to remove the key.*
NOTE: *The volume or interval of beep sound can be
changed. Ask your Lexus dealer for details.
SS31003
ºLOCKº ± Engine is off and the steering wheel is locked.
The ignition key can be removed only at this position.
Manual transmission: To turn the key from ºACCº to the
ºLOCKº position, you must push in the key.
Automatic transmission: To turn the key from ºACCº to the
ºLOCKº position you must put the transmission selector lever
in the ºPº position and you must push in the key.
Once you remove the key, the engine immobiliser system is
automatically set. See ºEngine immobiliser systemº on page
12.
2003 IS300 from Aug. '02 Prod. (OM53439U)

IN CASE OF AN EMERGENCY
267
IF YOUR VEHICLE WILL NOTSTART
(a) Simple checks
Before making these checks, make sure you have followed the
correct starting procedure instructions in ºHow to start the
engineº on page 229 and that you have sufficient fuel. Since
your vehicle is equipped with the engine immobiliser system,
also check whether the other keys will start the engine. If they
work, your key may be broken. Have the key checked at your
Lexus dealer. If none of your keys work, the system is possibly
broken. Call your Lexus dealer. See ºKeysº on page 8.
If the engine is not turning over or is turning over too
slowly ±
1. Check that the battery terminals are tight and clean.
2. If the battery terminals are O.K., switch on the interior light.
3. If the light is out, dim or goes out when the starter is
cranked, the battery is discharged. You may try jump starting.
See º(c) Jump startingº for further instruction.
If the light is O.K., but the engine still will not start, it needs
adjustment or repair. Call a Lexus dealer, Roadside
Assistance or Customer Service Assistance. (See
ºForewordº.)
NOTICE
Do not pull± or push±start the vehicle. It may damage
the vehicle or cause a collision when the engine starts.Also the three±way catalytic converter may overheatand become a fire hazard.
If the engine turns over at its normal speed but will not
start ±
1. The engine may be flooded because of repeated cranking.
See º(b) Starting a flooded engineº for further instructions.
2. If the engine still will not start, it needs adjustment or repair.
Call a Lexus dealer, Roadside Assistance or Customer
Service Assistance. (See ºForewordº.)
2003 IS300 from Aug. '02 Prod. (OM53439U)

IN CASE OF AN EMERGENCY
290
IF YOU LOSE YOUR KEYS ORLOCK YOURSELF OUT
You can purchase a new key at your Lexus dealer if you
can give them the key number and master key.
Even if you lose only one key, contact your Lexus dealer to
make a new key. If you lose all your master keys, you cannot
make new keys; the whole engine immobiliser system must be
replaced.
See the suggestion given in ºKeysº on page 8.
You can use the wireless remote control system with the new
key. Contact your Lexus dealer for detailed information.
If your keys are locked in the vehicle and you cannot get a
duplicate, many Lexus dealers can still open the door for you,
using their special tools. If you must break a window to get in,
we suggest breaking the smallest side window because it is the
least expensive to replace. Be extremely cautious to avoid
cuts from the glass.
2003 IS300 from Aug. '02 Prod. (OM53439U)

ELECTRICAL COMPONENTS
347
No.FUSEAMPERECIRCUIT
26 MPX±B10
Power window system,
Air conditioning,
Gauges and meters,
Theft deterrent system
27 P RR P/W20Power window system
28 SRS±B7.5SRS system, Door lock system
29 TV7.5Television
30 OBD7.5On±board diagnosis system
31 IGN7.5
SRS system,
Multiport fuel injection
system/sequential multiport fuel
injection system,
Cruise control system
32 ECU±B120
Theft deterrent system,
Door lock system,
Interior light, Trunk light,
Vanity light, Ignition switch light,
Map light, Door courtesy lights,
Power window system,
Air conditioning,
Gauges and meters
33 ALT±S7.5Charging system
34 ETCS15Electronic throttle control
system
35 AM220
Starting system, SRS system,
Multiport fuel injection
system/sequential multiport fuel
injection system, Cruise control
system
36 HORN10Horn
No.FUSEAMPERECIRCUIT
37 RADIONO.120Audio
38 TURN±HAZ15Turn signal lights
39 EFI25
Multiport fuel injection
system/sequential multiport fuel
injection system,
Emission control system,
Engine immobiliser system
40 DRL NO.230Daytime running light system
41 DRL NO.17.5Daytime running light system
42 H±LP L LW R15Left±hand headlight
(low beam), Fog lights
43 H±LP R LW R15Right±hand headlight
(low beam)
44 ABS27.5Anti±lock brake system
45 SPARESpare fuse
46 SPARESpare fuse
47 SPARESpare fuse
48 H±LP LUPR10Left±hand headlight
(high beam)
49 H±LP R UPR10
Right±hand headlight
(high beam),
Service reminder indicators and
buzzers
2003 IS300 from Aug. '02 Prod. (OM53439U)