battery lexus LS400 1998 Electrical Components / 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
23 Daytime Running Light System (Canada only)
The headlights turn on when the parking brake is released with the
engine started, even with the light switch in the ”OFF” 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.
Under the daytime running light system, the headlights turn on at
reduced intensity. Twist the knob to the second clickstop to turn to
full intensity for driving at night.
When setting the knob to the third clickstop (”AUTO”), 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.
Automatic headlight leveling system (Vehicles with
discharge headlight only)
As the headlight beam level is always maintained automatically at
the proper level in all loading conditions, your headlights do not
dazzle other road users.
If this system fails, the multi information display shows a message
”HEADLIGHT LEVELING”. If this occurs, have your vehicle
checked by Lexus dealer.

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.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
45 If you continue driving with any door or trunk open, the reminder
light starts flashing and the warning tone sounds to remind you to
close the door or trunk.
W52 W52
If the driver’s door is opened with the ignition switch turned off
and the moon roof opened, the above message appears and the
reminder light flashes.
W48 W48
In the following cases, the warning message appears and the
reminder light next to the warning message and the ”VSC OFF”
indicator light come on. And the warning tone also sounds.
(a) After the removal of the battery terminals (See ”Initial
adjustment of vehicle skid control system” on page 175.)
(b) If the vehicle skid control system malfunctions
If the above message appears for the cause of (b), have your vehicle
checked by your Lexus dealer as soon as possible.
Although the above message appears, you can continue your normal
driving, but without the vehicle skid control system function.
W49 W49
In the following cases, the above message appears, the reminder
light comes on and the warning tone sounds.
When the headlight switch is turned to the first or second
clickstop with one or more of tail light bulbs burned out.
When the brake pedal is held down with one or more of stop light
bulbs burned out.
Have defective bulbs replaced as soon as possible.
W50 W50
When the engine oil level is too low, the above message appears,
the reminder light comes on and the warning tone sounds.
Add oil as soon as possible. (For instructions, see ”Checking the
engine oil level” on page 230.)
NOTICE
Continued engine operation with low engine oil will damage the
engine.

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.