key battery lexus LS400 1998 Audio System / LEXUS 1998 LS400 OWNER'S MANUAL (OM50498U)

KEYS AND DOORS
12In 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 ”Replacing the battery” on
page 16. 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
on the key.
Do not leave the wireless remote control key on the 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, you can hear one beep.* 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. If they were already locked, the turn
signal lights will flash.***
NOTE: *The volume of beep sound can be changed. **The
buzzer can be set not to sound with any door not closed securely.
***The turn signal lights can be set not to flash. 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 14.
When you push the ”UNLOCK” 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: *Unlocking by a 2time operation can be changed. Ask
your Lexus dealer for details.

KEYS AND DOORS
16
CAUTION
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
This device complies with RSS210 of Industry and
Science 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 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 lose the components,
screws and Oring.
11L0281
1. Remove the screw, and then the cover while pushing it in the
arrow direction.

KEYS AND DOORS
17
11L0291
2. Remove the module from the key frame.
11L0301
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.
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 Oring.
5. Install the lid with the Oring and 2 screws.
NOTICE
Take care not to damage or bend the Oring 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.

SWITCHES
28If 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 stopandgo 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 deicer 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
12L009-2
1
For driver’s window
2
For front passenger’s window
3
For left rear window
4
For 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, the window can be operated until any of the
doors is opened (or for about 45 seconds).

SWITCHES
31
CAUTION
To avoid serious personal injury, you must do the following.
Always make sure the head, hands and other parts of the
body of all occupants are kept completely inside the vehicle
before you close the power windows. If someone’s neck,
head or hands gets caught in a closing window, it could
result in a serious injury. When anyone closes the power
windows, be sure that they operate the windows safely.
When small children are in the vehicle, never let them use
the power window switches without supervision. Use the
window lock switch to prevent them from making
unexpected use of the switches.
Never leave small children alone in the vehicle, especially
with the ignition key still inserted. They could use the
power window switches and get trapped in a window.
Unattended children can become involved in serious
accidents.
EMERGENCY FLASHER SWITCH
12L0121
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.

SWITCHES
32
SEAT HEATER SWITCHES
12L0132
The seat heater has two switches one marked ”L” (for the left
seat) and the other marked ”R” (for the right seat). Push these
switches to turn the respective seat heater on, and push the
switches again to turn them off.
The ignition key must be in the ”ON” position.
CAUTION
Occupants must use caution when operating the seat heater
because it may make them feel too hot or cause burns at low
temperatures (erythema, varicella). 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 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.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
39
(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.
NOTICE
Do not continue driving if the engine drive belt is broken or
loose.
(f) Malfunction Indicator Lamp
This lamp comes on in the following cases.
a. The fuel tank is completely empty. (See ”Fuel gauge” on page 34
for instructions.)
b. The fuel tank cap is not tightened securely. (See ”Fuel tank cap”
on page 65 for instructions.)
c. There is a problem somewhere in your engine electrical system
or electronic throttle control system.
If it comes on while you are driving in case c., have your vehicle
checked/repaired by your Lexus dealer as soon as possible.
(g) ”ABS” Warning Light
This light warns that there is a problem somewhere in your antilock
brake system.
If the light comes on while you are driving, have your vehicle
checked by your Lexus dealer as soon as possible.
The light will come on when the ignition key is turned to ”ON”, and
will go off after about a few seconds.
When the ”ABS” warning light is on (and the brake system warning
light is off), the brake system operates conventionally but antilock
brake system is not assisting brake performance so that the wheels
could lock up during a sudden brake or braking on slippery road
surfaces.
(h) Open Door Warning Light
This light remains on until all the doors are completely closed.

INTERIOR EQUIPMENT
53
POWER OUTLET
14L0381
The power outlet is designed for power supply for car
accessories.
The ignition key must be in the ”ACC” or ”ON” position for the
power outlet to be used.
NOTICE
To prevent the fuse from being blown, do not use the
electricity over the total vehicle capacity of 3.5A/12V.
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.

COMFORT ADJUSTMENT
114The beep sound means that the positions are recorded in the
computer ’s memory.
By repeating these two steps and pressing the remaining button, the
driving position for another driver can be recorded.
To set a new memorized position, select the desired position and
perform step 2. The previous memory will be erased and the new
position will be set.
To make only slight changes to an already memorized position, the
easiest way is to first activate the memorized position, then make the
desired changes and perform step 2 above.
Activating a memorized position
16L056
When you push button ”1” or ”2”, the driving position will be
automatically adjusted to the position recorded for that button.Conditions for memorized position activation
Ignition key ”ON” and shift lever in ”P” 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 and 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 (”1” or ”2”) 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.
CAUTION
Do not start the vehicle while the adjustments are being
made.
Take care not to select the wrong button, or the seat could
strike the rear passenger or hit your body against the
steering wheel. If this happens, you can stop the movement
by pressing another driving position memory switch, or
depressing the brake pedal.

THEFT DETERRENT
117
THEFT DETERRENT SYSTEM
To deter theft of the vehicle, this system is designed to give an
alarm if any of the doors, trunk or hood is forcibly unlocked or
the battery terminal is disconnected and then reconnected while
the vehicle is locked.*
NOTE: *The system operating condition can be changed. Ask
your Lexus dealer for details.
The alarm blows the horn intermittently and flashes the headlights,
tail lights and other exterior lights.
17L001
Setting the system
1. Turn the ignition key to the ”LOCK” position and remove it.
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.* If you do not want to make them flash, consult with your
Lexus dealer.
NOTE: *The turn signals can be set not to flash. Ask your Lexus
dealer for details.
The indicator light will come on when all the doors, trunk and hood
are closed and locked.
3. After 30 seconds, the indicator flashes 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.* If you do not want to make them flash, consult
with your Lexus dealer.
NOTE: *The turn signals can be set not to flash. Ask your Lexus
dealer for details.
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.