2003 Lexus ES300 key battery

KEYS AND DOORS
16In the following cases, th
e 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 “Replacing the battery”
on page 20. 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. (See
“If you lose your keys or lock yourself out” on page 285.)
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.
Locking/Unlocking the doors
When you push the “LOCK” button on the key briefly, all
the doors can be locked from outside the vehicle.
At this time, one beep sounds and the turn signal lights flash
once.* However, when you push the “LOCK” 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
“UNLOCK” 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 “LOCK” button once again.
NOTE:
* The turn signal lights can be set not to flash and the beep
volume can be changed.
** The buzzer can be set not to sound if a door is not closed
securely.
Ask your Lexus dealer for details.
NOTICE
Do not push the “LOCK” button any longer than 2 to 3
seconds. Pushing the button longer activates an alarm.
For details, see page 18.

KEYS AND DOORS
20
Increase the separation between the equipment and
receiver.
 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 c areful not to lose the
components.
 Replace only with the same or equivalent type
recommended by a Lexus dealer.
 Dispose of used batteries according to the local laws.

KEYS AND DOORS
21
1. Remove the screw, and then the cover while pushing it in the
arrow direction.
2. Remove the module from the key frame.
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 the
battery 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 battery
insertion and that dust or oils do not adhere to the
inside of the module.
 Take care not to lose the screws.

SWITCHES
29
The automatic light control sensor is on the 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 are on, they automatically turn off about
30 seconds after any door or trunk lid is opened and closed
with the ignition key turned to the “ACC” or “LOCK” position\
.*
If you want to turn off the lights immediately, push the “LOCK”
button on the wireless remote control key twice. The lights also
can be turned off immediately by pushing the “LOCK” button
on the wireless remote control key with all the doors locked and
the trunk lid closed.NOTE:
* The time before turning off the lights can be changed.
Ask your Lexus dealer for details. To turn on the lights again, turn the ignition key to the “ON”
position, or twist the knob on the end of lever to the “AUTO”
position and then twist the k
nob until the first or second
clickstop.
If you are going to park for over one week, make sure the knob
is in the “AUTO” or “DRL OFF” position.
Daytime Running Light (DRL) System
When the knob is set in the “AUTO” position, the headlights
turn on at reduced intensity when the parking brake is released
with the engine started. They will not go off until the ignition
switch is turned off.
The headlights will automatically adjust to full intensity and/or
turn on the other lights dependi ng on the darkness of the
surroundings.
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.
To cancel the DRL system, twist the knob to the “DRL OFF”
position.
NOTICE
To prevent the battery from being discharged, do not
leave the lights on longer than necessary when the
engine is not running.

SWITCHES
32To turn on the lights again, turn the ignition key to the “ON”
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.
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 “OFF” 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 (“AUTO”), 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 the
engine is not running.
Automatic headlight leveling system
(vehicles with discharge headlight only)
Vehicle position changes according to loading condition,
passengers getting on and off, vehicle acceleration and
deceleration, etc. However, the headlight beam level is always
maintained automatically by the system at the proper level 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 your
Lexus dealer.
If you replace the rear suspension and/or the vehicle height
changes, contact your Lexus dealer to check the automatic
headlight leveling system and headlight beam level.

SWITCHES
40
CAUTION
Since the mirror surfaces can get hot, do not touch them
when the switch is on.
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.
If the outside rear view mirrors are heavily coated with ice, use
a spray de −icer before operating the switch.
NOTICE
 When cleaning the inside of the rear window, be
careful not to scratch or damage the heater wires or
connectors.
 To prevent the battery from being discharged, turn
the switch off when the engine is not running.
POWER WINDOW SWITCHES
 1
For 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 “ON”
position.
Key off operation: Even if the ignition key is turned to the
“ACC” or “LOCK” position with all the doors closed, the window
can be operated until a front door is opened (or for 43
seconds).

Finish
GAUGES, METERS AND SERVICE REMINDER INDICATORS
53
(c) Front Passenger’s Seat Belt ReminderLight
This light reminds you to buckle up the front passenger’s seat
belt.
Once the ignition key is tur ned to the “ON” position, the
reminder light flashes if a front passenger sits in the front
passenger seat and does not fasten the seat belt. Unless the
front passenger fastens the belt, the light keeps flashing.
If luggage load is placed on the front passenger seat,
depending on its weight and how it is placed on the seat,
built−in sensors in the seat cushion may detect the pressure,
causing the reminder light to come on.
(d) SRS Warning Light
This light comes on when the ignition key is turned to the
“ON” position. It goes off after about 6 seconds. This
means the SRS airbags and seat belt pretensioners are
operating properly.
This warning light system monitors the airbag sensor
assembly, front airbag sensors, side and curtain shield airbag
sensor assemblies, curtain shield airbag sensor assemblies,
driver’s seat position sensor, driver’s seat belt buckle switch,
front seat belt pretensioner assemblies, inflators, warning light,
interconnecting wiring and power sources. If any of the following conditions occurs, this indicates a
malfunction
somewhere in the parts monitored by the warning
light system. Contact your Lexus dealer as soon as possible
to service the vehicle.
 When the ignition switch is turned to the “ON” position, the
light does not come on, remains on or flashes.
 The light comes on or starts flashing while driving.
If the light stays on, it indicates that the driver and front
passenger airbags fail. If the light flashes, the side and curtain
shield airbags and/or seat belt pretensioners fail.
(e) Discharge Warning Light
This light warns that the battery is being discharged.
If it comes on while you are driving, stop the vehicle, turn off the
engine, and check for the cause. Look first at the engine drive
belt.
 If it is loose or broken, the generator will not charge the
battery properly.
 If the belt is O.K., there is a problem somewhere in the
charging system.
The engine ignition will continue to operate, however, until the
battery is discharged. Turn off the air conditioning, blower,
radio, etc., and drive directly to the nearest Lexus dealer or
repair shop.

Finish
INTERIOR EQUIPMENT
69
POWER OUTLET
The power outlet is designed for power supply for car
accessories.
The ignition key must be in the “ACC” or “ON” position for t\
he
power outlet to be used.
NOTICE
To prevent the fuse from being blown, do not use the
electricity over the total vehicle capacity of
12V/120W.
 To prevent the battery from being discharged, do not
use the power outlet longer than necessary when the
engine is not running.
Close the power outlet lid when the power outlet is
not in use. Inserting a foreign object other than the
appropriate plug that fits the outlet, or allowing any
liquid into the outlet may cause electrical failure or
short circuits.