key battery LEXUS SC300 1999 Owners Manual

KEYS AND DOORS
20In 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 25. 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.
Locking/Unlocking the doors
When you push the ºLOCKº button on the key briefly, all
the doors can be locked from outside the vehicle.
At this time, you can hear one beep. 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, the turn signal lights will flash.
NOTICE
Do not push the ºLOCKº button any longer than 2 to 3
seconds. Pushing the button longer activates an alarm.
For details, see page 22.
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.

KEYS AND DOORS
25
Replacing the battery
When you replace the battery, prepare a lithium battery
CR1616 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.
1. Remove the screw, and then the cover while pushing it in
the arrow direction.

KEYS AND DOORS
26
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.

KEYS AND DOORS
27
NOTICE

Make sure the positive side and negative side of the
battery should be faced correctly.

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 and O±ring.
5. Install the lid with the O±ring and 2 screws.
NOTICE
Take care not to damage or bend the O±ring when
installing.
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

SWITCHES
45
To turn on the emergency flashers, push the switch.
All the turn signal lights will flash. The emergency flashers
will work with the engine running or off and with or without
the ignition key.
Turn on the emergency flashers to warn other drivers if you
must stop your vehicle where it might be a traffic hazard.
Always pull your vehicle as far off the road as possible.
The turn signal light switch will not work when the
emergency flashers are in operation.
NOTICE
To prevent the battery from being discharged, do not leave
the switch on longer than necessary when the engine is
not running.
SEAT HEATER SWITCHES

GAUGES, METERS AND SERVICE REMINDER INDICATORS
56If the brake fluid level is correct ...
Have the warning system checked by your Lexus dealer.
(b) Seat Belt Reminder Light and Buzzer
Once the ignition key is turned to ºONº or ºSTARTº, the
reminder
light flashes and buzzer comes on if the driver's seat
belt is not fastened. Unless the driver fastens the belt, the light
stays flashing and the buzzer stops after about 4 to 8 seconds.
(c) SRS Airbag Warning Light
This indicator comes on when the ignition key is turned to
the ºACCº or ºONº position. It goes off after about 6
seconds. This means the SRS airbag system is operating
properly.
The SRS airbag warning light system monitors the airbag
sensor assembly, inflators, warning light, interconnecting
wiring and power sources.
If either 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.

The light does not come on as described above or remains
on.

The light comes on while driving.
(d) 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.
NOTICE
Do not continue driving if the engine drive belt is broken
or loose.
(e) Low Oil Pressure Warning Light
This light warns that the engine oil pressure is too low.
If it flickers or stays on while you are driving, pull off the road
to a safe place and stop the engine immediately. Call a Lexus
dealer or qualified repair shop for assistance.

COMFORT ADJUSTMENT
170
When you push button º1º or º2º, the signal beeps and the
driving position automatically adjusts to the position
recorded for that button.
Conditions for memorized position activation

Ignition key ºONº
Selector lever in ºPº position
All parts of the memorized positions can be activated.
However, if the brake pedal is being depressed, the seat
position will not change.

Key not in ignition switch
Within 30 seconds of opening driver's door
The memorized position can be activated, except for the
tilt and telescopic steering. If any driving position memory switch is pushed while one of
the memorized driving position profiles is being activated,
the operation will stop.
To activate the system, push the desired button (º1º or º2º)
again.
The driving position memory control system cannot be
operated while the vehicle is moving.
If the vehicle's battery is disconnected, the computer's
memory
will be erased and the memorized positions will have
to be set again.

THEFT DETERRENT
173
Setting the system
1. Turn the ignition key to the ºLOCKº position and
remove it.
The indicator light flashes by means of the engine
immobiliser system.
2. Close and lock all the doors, trunk and hood using an
ignition key or wireless remote control.If you lock them with wireless remote control, the turn signals
flash once.
The flashing indicator light changes to stay on when all the
doors, trunk and hood are closed and locked.
3. After 30 seconds, the indicator starts flashing and the
system is set.
Cancelling the system
When you unlock any door or trunk using an ignition key
or wireless remote control, the system is cancelled.
If you unlock any door or trunk with wireless remote control,
the turn signals flash twice.
Activating the system
The alarm sounds for 60 seconds if any of the following are
operated:


Unlocking any door or trunk without using an ignition key
or wireless remote control.

Opening the hood forcibly.

Reconnecting the battery.
If any door is unlocked and the ignition key is not in the
ignition switch during the alarm sounding, its door is
automatically locked.

THEFT DETERRENT
174To stop the alarm: Use either of the following methods.


Unlock the door or trunk using an ignition key or wireless
remote control.

Turn the ignition switch on.
Testing the system
1. Open all the windows.
2. Set the system as described above.
The front doors should be locked with the ignition key or
wireless remote control. Be sure to wait until the indicator
light starts flashing.
3. Unlock one of the doors from the inside.
The system should activate the alarm.
4. Unlock any of the doors with a key or the wireless
remote control to cancel the system.
5. Repeat this operation for the other doors and hood.
When testing the hood, also check that the system is activated
when the battery terminal is disconnected and then
reconnected.
If the system does not work properly, have it checked by your
Lexus dealer.
NOTICE
Disconnecting the battery may result in the erasure of
information you have set in the computer memory. After
reconnecting the battery, check that the memorized data
has been retained. If it has been erased, input it into the
computer once more.

AIR CONDITIONING AND AUDIO
187
To prevent the battery from being discharged, do not leave
the car audio on longer than necessary when the engine
is not running.
To ensure the correct audio system operation:


Be careful not to spill beverages over the audio system.

Do no put anything other than a cassette tape or CD
magazine into the cassette tape slot or CD changer.

The use of cellular phone inside or near the vehicle
may cause a noise from the speakers of the audio
system which you are listening to. However, this does
not indicate a malfunction.
You can listen to the car audio when the ignition key is at
ºONº or ºACCº. However, if the engine is not running,
the key must be in the ºACCº position.
You can adjust the brightness of the display. See ºInstrument
panel light control on page 64 for details.
Audio operation is described in detail on the following pages:

Radio operation ± See page 187.

Cassette tape player operation ± See page 192.

Compact disc player operation ± See page 196.
Radio operation
(a) Listening to the radio
1. Push the
(AM) or (FM1/2) button to turn the
radio on and select either an AM or FM broadcast.
ºAMº, ºFM1º or ºFM2º will appear on the display.
The radio can also be turned on by pushing the ºPWR.VOLº
knob if the radio was being used when the system was turned
off.
2. Turn the ºPWR.VOLº knob to adjust the volume.
3. Tune in the desired station. (See º(b) Selecting a stationº.)
The radio will change automatically to stereo reception when
an FM stereo broadcast is being received. At the same time
ºSTº will appear on the display. When the receiving signal
gets weak, the channel separation will automatically be
reduced for lowest noise. If the signal becomes extremely
weak, the radio will switch over to monaural reception.
4. Adjust the tone and sound balance. (See º(d) Adjusting the
toneº and º(e) Adjusting the sound balanceº.)
5. To turn the radio off, push the ºPWR.VOLº knob.