change 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.

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.