ECU Lexus IS300 2005 Electrical Components / LEXUS 2005 IS300 OWNER'S MANUAL (OM53489U)

IMPORTANT INFORMATION ABOUT YOUR LEXUS
ii
IMPORTANT INFORMATION ABOUTYOUR LEXUS
Occupant restraint systems
Lexus encourages you and your family to take the time to read
Section 1±6 of this Owner's Manual carefully. In terms of
helping you understand how you can receive the maximum
benefit of the occupant restraint systems this vehicle provides,
Section 1±6 of this Owner's Manual is the most important
section for you and your family to read.
Section 1±6 describes the function and operation concerning
seats, seat belts, SRS airbags and child restraint systems of
this vehicle and some potential hazards you should be aware
of. These systems work together along with the overall
structure of this vehicle in order to provide occupant restraint
in the event of a crash. The effect of each system is enhanced
when it is used properly and together with other systems. No
single occupant restraint system can, by itself, provide you or
your family with the equal level of restraint which these
systems can provide when used together. That is why it is
important for you and your family to understand the purpose
and proper use of each of these systems and how they relate
to each other. The purpose of all occupant restraint systems is to help reduce
the possibility of death or serious injury in the event of a
collision. None of these systems, either individually or
together, can ensure that there is no injury in the event of
collision. However, the more you know about these systems
and how to use them properly, the greater your chances
become of surviving an accident without death or serious
injury.
Seat belts provide the primary restraint to all occupants of the
vehicle, and every occupant of the vehicle should wear seat
belts properly at all times. Children should always be secured
in child restraint systems that are appropriate for their age and
size. SRS (Supplemental Restraint System) airbags are, as
their names imply, designed to work with, and be supplemental
to, seat belts and are not substitutes for them. SRS airbags can
be very effective in reducing the risk of head and chest injuries
by preventing contact of the head and chest with interior
portions of the vehicle.
In order to be effective, the SRS airbags must deploy with
tremendous speed. The rapid deployment of the SRS airbags
makes the SRS airbags themselves potential sources of
serious injury if an occupant is too close to an airbag, or if an
object or some part of
his or her body has been placed between
the occupant and the airbag at the time of deployment. This is
just one example of how the instructions in Section 1±6 of this
Owner's Manual will help ensure proper use of the occupant
restraint systems, and increase the safety they can provide to
you and your family in the event of an accident.
Lexus recommends you to read the provisions in Section 1±6
carefully and refer to them as needed during your time of
ownership of this vehicle.
04 06.30

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
xiii
Page
1Driver's seat belt reminder light51
. . . . . . . . . . . . . . .
2Open door warning light 55
. . . . . . . . . . . . . . . . . . . . . .
3Tachometer 47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Headlight high beam indicator light 32
. . . . . . . . . . .
5Low engine oil level warning light 53
. . . . . . . . . . . . .
6Vehicle stability control system
warning light 56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7Turn signal indicator lights 32
. . . . . . . . . . . . . . . . . . .
8Cruise control indicator light 249
. . . . . . . . . . . . . . . .
9Momentary fuel consumption meter 46
. . . . . . . . . . .
10Voltmeter 46
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
11Automatic headlight leveling system warning
light 56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . .
12Engine coolant temperature gauge 45
. . . . . . . . . . . .
13Anti±lock brake system warning light 54
. . . . . . . . . .
14Malfunction indicator lamp 54
. . . . . . . . . . . . . . . . . . .
15Fuel gauge 44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16Low fuel level warning light 55
. . . . . . . . . . . . . . . . . . . Page
17Odometer and trip meter
48
. . . . . . . . . . . . . . . . . . . . .
18Power mode indicator light 240
. . . . . . . . . . . . . . . . . .
19Snow mode indicator light 240
. . . . . . . . . . . . . . . . . . .
20ODO/TRIP knob 48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21Automatic transmission indicator lights 238 . . . . . .
22M mode indicator 241
. . . . . . . . . . . . . . . . . . . . . . . . . . .
23Gear position indicator for manual control 241 . . . .
24Discharge warning light 52
. . . . . . . . . . . . . . . . . . . . . .
25Rear light failure warning light 55
. . . . . . . . . . . . . . . .
26Security indicator light 27
. . . . . . . . . . . . . . . . . . . . . . .
27Traction control system
off indicator/warning light 55 . . . . . . . . . . . . . . . . . . . .
28Low engine oil pressure warning light 52
. . . . . . . . .
29Slip indicator light 252, 255, 258
. . . . . . . . . . . . . . . . . .
30Brake system warning light 50
. . . . . . . . . . . . . . . . . . .
31SRS warning light 51
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
32Engine oil replacement reminder light 53
. . . . . . . . .
04 06.30

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
xv
Page
1Tachometer47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Headlight high beam indicator light 32
. . . . . . . . . . .
3Low engine oil level warning light 53
. . . . . . . . . . . . .
4Vehicle stability control system warning light 56 . .
5Turn signal indicator lights 32
. . . . . . . . . . . . . . . . . . .
6Cruise control indicator light 249
. . . . . . . . . . . . . . . .
7Momentary fuel consumption meter 46
. . . . . . . . . . .
8Voltmeter 46
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
9Automatic headlight leveling system warning
light 56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . .
10Engine coolant temperature gauge 45
. . . . . . . . . . . .
11Anti±lock brake system warning light 54
. . . . . . . . . .
12Malfunction indicator lamp 54
. . . . . . . . . . . . . . . . . . .
13Fuel gauge 44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14Low fuel level warning light 55
. . . . . . . . . . . . . . . . . . .
15Odometer and trip meter 48
. . . . . . . . . . . . . . . . . . . . .
16Power mode indicator light 240
. . . . . . . . . . . . . . . . . . Page
17Snow mode indicator light
240
. . . . . . . . . . . . . . . . . . .
18ODO/TRIP knob 48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19Automatic transmission indicator lights 238 . . . . . .
20M mode indicator 241
. . . . . . . . . . . . . . . . . . . . . . . . . . .
21Gear position indicator for manual control 241 . . . .
22Discharge warning light 52
. . . . . . . . . . . . . . . . . . . . . .
23Rear light failure warning light 55
. . . . . . . . . . . . . . . .
24Security indicator light 27
. . . . . . . . . . . . . . . . . . . . . . .
25Traction control system
off indicator/warning light 55 . . . . . . . . . . . . . . . . . . . .
26Low engine oil pressure warning light 52
. . . . . . . . .
27Slip indicator light 252, 255, 258
. . . . . . . . . . . . . . . . . .
28Brake system warning light 50
. . . . . . . . . . . . . . . . . . .
29SRS warning light 51
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
30Open door warning light 55
. . . . . . . . . . . . . . . . . . . . . .
31Driver's seat belt reminder light 51
. . . . . . . . . . . . . . .
04 06.30

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 immobilizer 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 immobilizer system is
automatically cancelled. (For details, see ªEngine immobilizer
systemªon page 12.) You can put the key case away then. You
cannot cancel the engine immobilizer 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.
04 06.30

KEYS AND DOORS
12
ENGINE IMMOBILIZER SYSTEM
SV11007
The engine immobilizer 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 immobilizer system using the flat key. (For
details, see ªFlat 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.
04 06.30

KEYS AND DOORS
15
Locking/Unlocking the doors
When you push the ªLOCKº 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 ªLOCKº 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 ªUNLOCKº 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 ªLOCKº 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. Ask your Lexus dealer for details.
NOTICE
Sedan only: Do not push the ªLOCKº button any longerthan 2 to 3 seconds. Pushing the button longer activates
an alarm. For details, see page 16.
When you push the ªUNLOCKº 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 ªDOORº position.*** However, this function does not work
when the ignition key is in the ªONº position. For further
information, see ªInterior lightº on page 60.
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 ªLOCKº or ªUNLOCKº 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.
04 06.30

KEYS AND DOORS
20
NOTICE
Make sure the positive side and negative side of thebattery are faced correctly.
Do not replace the battery with wet hands. Water maycause unexpected rust.
Do not touch or move any components inside thetransmitter, or it may interfere with proper operation.
Be careful not to bend the electrode when insertingthe battery 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.
DOORS
Locking with key
SS11007a

1Lock 2Unlock
Turn the key towards the front of the vehicle to lock and
towards the back to unlock.
Locking (or unlocking) the driver's door will lock (or unlock) all
the other doors simultaneously. In the driver's door lock,
turning the key once will unlock the driver's door and twice in
succession will unlock all doors simultaneously.*
Together with the activation of unlocking, the interior light will
turn on for 15 seconds if the interior light switch is in the
ªDOORº position.** However, this function does not work when
the ignition key is in the ªONº position. For further information,
see ªInterior lightº on page 60.
04 06.30

KEYS AND DOORS
25
SV11023
When closing the back door, the inside handle can be
used to make the reach easier.
To close the back door, lower it and press down on it. After
closing the back door, try pulling it up to make sure it is securely
closed.
See ªCargo and luggageº on page 275 for precautions in
loading luggage.
CAUTION
 Keep the back door closed while driving. This not
only keeps the luggage from being thrown out but
also prevents exhaust gases from entering the
vehicle.
 If the open back door hides the rear stop and tail
lights or rear turn signal lights while you are parked,
other road users must be warned of the presence of
your vehicle by a warning triangle or other device.
NOTICE
To prevent damage to the back door dampers, do not
apply any force, paint or let any other foreign matter onthem.
04 06.30

GAUGES, METERS AND SERVICE REMINDER INDICATORS
54
(i) Malfunction Indicator Lamp
This lamp comes on when the ignition key is turned to the
ªONº position and goes off after the engine starts. This
means that the warning light system is operating properly.
If the lamp remains on, or the lamp comes on while
driving, first check the followings.
 Empty fuel tank
If the fuel tank is empty, refuel immediately.
 Loose fuel tank cap
If the fuel tank cap is loose, securely tighten it.
These cases are temporary malfunctions. The malfunction
indicator lamp will go off after taking several driving trips.
If the lamp does not go off even after several trips, contact your
Lexus dealer as soon as possible.
If the fuel tank is not empty or the fuel tank cap is not
loose...
 There is a problem somewhere in the engine, emission
control system, electronic throttle control system, automatic
transmission electrical system or warning light system itself.
Contact your Lexus dealer as soon as possible to service the
vehicle.
If engine speed does not increase when the accelerator pedal
is depressed, there may be a problem somewhere in the
electronic throttle control system. At this time, if you depress the accelerator pedal more firmly
and slowly, you can drive your vehicle at low speeds. Have
your
Lexus checked by your Lexus dealer as soon as possible.
Even if the abnorma lity of the electronic throttle control system
is corrected during low speed driving, the system may not be
recovered until the engine is stopped and the ignition key is
turned to ªACCº or ªLOCKº position.
CAUTION
Be especially careful to prevent erroneous pedal
operation.
Emissions Inspection and Maintenance (I/M) programs
Your vehicle may not pass a state emission inspection if the
malfunction indicator lamp remains on. Contact your Lexus
dealer to check your vehicle's emission control system and
OBD (On±Board Diagnostics) system before taking your
vehicle for the inspection.
For details, see ªEmissions Inspection and Maintenance (I/M)
programsº on page 313.
(j) ªABSº Warning Light
The light comes on when the ignition key is turned to the ªONº
position. If the anti±lock brake system and the brake assist
system work properly, the light turns off after a few seconds.
Thereafter, if either of the systems malfunctions, the light
comes on again.
04 06.30

INTERIOR EQUIPMENT
66
GLOVE BOX
SS14012

1Unlock 2Open 3Lock
To open the glove box door, pull the lever. To lock the
glove box door, insert the master key and turn it
clockwise.
With the tail lights on, the glove box light will come on when the
glove box door is open.
CAUTION
To reduce the chance of injury in case of an accident or
a sudden stop, always keep the glove box door closed
while driving.
GARAGE DOOR OPENER
The garage door opener (HomeLink Universal
Transceiver) is manufactured under license from
HomeLink
 and can be programmed to operate garage
doors, gates, entry doors, door locks, home lighting
systems, and security systems, etc.
(a) Programming the HomeLink
SV14007

1Buttons 2Indicator light
The HomeLink in your vehicle has 3 buttons and you can
store one program for each button.
To ensure correct programming into the HomeLink
, install a
new battery in the hand± held transmitter prior to
programming.
04 06.30