key battery Lexus IS300 2003 Basic Functions / LEXUS 2003 IS300 (OM53439U) User Guide

AIR CONDITIONING
180
AUTOMATIC AIR CONDITIONING CONTROLS
SV21019

You can adjust the brightness of the display. SeeºInstrument panel light controlº on page 53 for details.
The automatic air conditioning automatically maintains
the set temperature.
In the automatic operation mode, the air conditioning selects
the most suitable fan speed, air flow, air intake and on±off of
the air conditioning according to the temperature.
The ignition key must be in the ºONº position.
NOTICE
To prevent the battery from being discharged, do notleave the air conditioning on longer than necessarywhen the engine is not running.
2003 IS300 from Aug. '02 Prod. (OM53439U)

AUDIO
198
Using your audio system: some basics
This section describes some of the basic features of the Lexus
audio system. Some information may not pertain to your
system.
Your audio system works when the ignition key is in the ºACCº
or ºONº position.
NOTICE
To prevent the battery from being discharged, do not leave the car audio on longer than necessary when theengine is not running.
(a) Turning the system on and off
SV22050
Push this knob to turn the audio system on and off. Turn
this knob to adjust the volume.
The system turns on in the last mode used.
SV22051
Push ºAMº, ºFMº, ºT APEº or ºDISCº to turn on that mode.
The selected mode turns on directly.
Push these buttons if you want to switch from one mode to
another.
If the tape or disc is not set, the cassette player or compact disc
player does not turn on.
You can turn off the cassette player by ejecting the cassette
tape. If the audio system was previously off, then the entire
audio system will be turned off when you eject the cassette
tape. If another function was previously playing, it will come on
again.
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
268
(b) Starting a flooded engine
If the engine will not start, your engine may be flooded
because of repeated cranking.
If this happens, turn the key to ºSTARTº with the accelerator
pedal held down. Continue this operation for 30 seconds and
then stop cranking. Then try starting the engine with your foot
off the accelerator pedal.
If the engine does not start after 30 seconds of cranking,
release the key, wait a few minutes and try again.
If 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 crank for more than 30 seconds at a time. This
may overheat the starter and wiring systems.
(c) Jump starting
To avoid serious personal injury and damage to your
vehicle which might result from battery explosion, acid
burns, electrical burns, or damaged electronic
components, these instructions must be followed
precisely.
If you are unsure about how to follow this procedure, we
strongly recommend that you seek help from your Lexus
dealer, Roadside Assistance or Customer Service Assistance.
(See ºForewordº.)
CAUTION
 Batteries contain sulfuric acid which is poisonous
and corrosive. Wear protective safety glasses when
jump starting, and avoid spilling acid on your skin,
clothing, or vehicle.
 If you should accidentally get acid on yourself or in
your eyes, remove any contaminated clothing and
flush the affected area with water immediately. Then
get immediate medical attention. If possible,
continue to apply water with a sponge or cloth while
en route to the medical office.
 The gas normally produced by a battery will explode
if a flame or spark is brought near. Use only
standardized jumper cables and do not smoke or
light a match while jump starting.
2003 IS300 from Aug. '02 Prod. (OM53439U)

ENGINE
310± COOLING SYSTEM
Capacity
7.5 L (7.9 qt., 6.6 lmp.qt.)
Coolant typeºToyota Genuine Long Life Coolantº or equivalent
With ethylene±glycol type coolant for a proper corrosion protection o\
f
aluminum components
Do not use alcohol type antifreeze or plain water alone.
NOTE:
ºToyota Genuine Long Life Coolantº is filled in your Lexus vehicle. In order \
to avoid technical problems, we strongly recommend using
ºToyota Genuine Long Life Coolantº or equivalent. Please contact your \
Lexus dealer for further details.
± FUEL
Fuel type
Only UNLEADED
Octane rating91 (Research octane number 96) or higher
± IGNITION SYSTEMSpark plug ± Make DENSO ± Gap
SK16R±P11
1.1 mm (0.043 in.)
± ELECTRICAL SYSTEM
Battery ± Open voltage at 20 C (68F):
Charging rates
12.7 V Fully charged
12.3 V Half charged
11.9 V Discharged
[Voltage that is checked 20 minutes after the key is removed with all the
lights turned off]
5A max.
2003 IS300 from Aug. '02 Prod. (OM53439U)