1998 Lexus LS400 key

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
13 At this time, two beeps sound.* Together with the activation of
unlocking, the interior light comes on for 15 seconds if the interior
light switch is in ”DOOR” position.** However, this function does
not work when the ignition key is in the ”ON” position. For further
information, see ”Interior lights” on page 49.
You have 30 seconds to open a door after using the wireless remote
unlock feature.*** If a door is not opened by then, all the doors will
be automatically locked again.
Even if the ”LOCK” or ”UNLOCK” switch is kept pressed in, the
locking or unlocking operation is not repeated. Release the button
and then push again.
NOTE: *The volume of beep sound can be changed. **The
interior light can be set not to come on or the duration of lighting
can be changed. ***The time before automatic relocking can
be changed. Ask your Lexus dealer for details.
11L019-1
To turn off the beep sound, push this switch. Pushing it again turns
on the beep sound.

KEYS AND DOORS
14
Unlocking the trunk lid
11L0132
When you keep the button pushed for about 1 second, you can
unlock the trunk lid.* One beep sounds.
This function does not work when the ignition key is in the ”ON”
position.
NOTE: *The operation method can be changed. Ask your Lexus
dealer for details.
Sounding an alarm*
11L0143
When you push the ”LOCK” button for about 2 to 3 seconds, an
alarm sounds to deter any person trying to break into or damage
your vehicle.
If you want to stop the alarm, push any button.
This function does not work when the ignition key is in the ”ON”
position.
NOTE: *The alarm can be set not to sound. Ask your Lexus
dealer for details.

KEYS AND DOORS
15
Operating the windows and moon roof
The windows and moon roof can be operated using a wireless key
from outside the vehicle.*
NOTE: *The windows can be set inoperative. The moon roof can
be set to slide open, tilt up or inoperative. Ask your Lexus dealer
for details.
11L0322
Push the ”UNLOCK” button until the windows and moon roof start
to move. When you release the button, the windows and moon roof
stop operating.
For vehicles sold in U.S.A.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause
harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more
of the following measures:
Reorient or relocate the receiving antenna.
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.

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.

KEYS AND DOORS
18
DOORS
Locking with key
11L0261
1
Lock 2
Unlock
Turn the key towards the front of the vehicle to lock and towards
the back to unlock.
The doors lock and unlock simultaneously with either front door. In
the driver’s door lock, turning the key once will unlock the driver’s
door and twice in succession will unlock all doors simultaneously.*
In the passenger’s door lock, turning the key once will unlock all
doors simultaneously.
NOTE: *Unlocking by a 2time operation can be changed. Ask
your Lexus dealer for details.
Locking with inside lock button
11L006
1
Lock 2
Unlock
Push in the lock button to lock and unlock the door.
When locked, the door cannot be opened with either the outside or
inside door handle.
Closing the door with the lock button pushed in will also lock the
door. Be careful not to lock your keys in the vehicle. The door will
not lock if the key is left in the ignition switch when closing the front
doors.

KEYS AND DOORS
19
CAUTION
Before driving, make sure the doors are closed and locked,
especially when small children are in the vehicle. Along with
the proper use of seat belts, locking the doors helps prevent the
driver and passengers from being thrown out from the vehicle
during an accident. It also helps prevent the doors from being
opened unintentionally.
Locking with power door lock switch
11L007-2
1
Lock 2
Unlock
To lock all the doors simultaneously, push the power door lock
switch on the front side. Pushing on the rear side will unlock
them.
The same switch is also equipped on the front passenger’s side.
Locking with rear door childprotector
11L009-2
Whenever small children are in the vehicle, lock the rear door so
that it does not open from the inside. To do this, turn the knob
to the ”LOCK” position as shown and then close the door.