1999 LEXUS SC300 battery

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
35
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 ºOFFº 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 (ºAUTOº), 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.
HEADLIGHT DIMMER AND
TURN SIGNAL SWITCH

SWITCHES
40
CAUTION
Since the mirror surfaces can get hot, keep your hands off
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.

To prevent the battery from being discharged, do not
operate the defogger continuously longer than
necessary.
POWER WINDOW SWITCHES

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

SWITCHES
47
CAUTION
Occupants must use caution when operating the seat heater
because they may experience minor burns even at low
temperatures. Use extra caution for;

Baby, small child, elderly person, sick person or
handicapped person

Persons who have delicate skin

Persons who are exhausted

Persons who have taken alcohol or drugs which induce
sleep (sleeping drug, cold remedy, etc.).
To prevent the seat from overheating, do not use the seat
heater with a blanket, cushion, or other insulating objects
which cover the seat.
NOTICE

Do not put unevenly weighted objects on the seat and
do not stick sharp objects (needles, nails, etc.) into the
seat.

When cleaning the seats, do not use organic
substances (paint thinner, benzine, alcohol, gasoline,
etc.). They may damage the heater and seat surface.

To prevent the battery from being discharging, turn
the switches on when the engine is running.