1999 Lexus LS400 warning

GAUGES, METERS AND SERVICE REMINDER INDICATORS
63
(a) If parking brake
is off, stop and
check.
(b) Fasten driver's seat belt.

(Indicator and buzzer)
(c) Fasten front passenger's
seat belt.
(Under the center vent)
(d) Take vehicle to Lexus dealer
immediately.
(e) Stop and check. (f) Take vehicle to
Lexus dealer.
(g) Take vehicle to Lexus dealer.
(h) Close all doors.
(i) Low fuel level Fill up tank. warning light
(j) Key reminder buzzer Remove key.
or
or

GAUGES, METERS AND SERVICE REMINDER INDICATORS
64
(a) Brake System Warning Light
This light has the following two functions:
Parking brake reminder
If this light is on, make sure the parking brake is fully
released. The light should go off.
Low brake fluid level warning
If this light comes on and stays on while you are driving,
slow down and pull off the road. Then stop the vehicle
carefully. Remember that stopping distance and pedal
effort may be increased. There may be a problem
somewhere in the brake system. Check the fluid level
of the see±through reservoir.
To make sure the parking brake has not caused the
warning light to come on, check to see that the parking
brake is fully released.
If the brake fluid level is low ...
At a safe place, test your brakes by starting and
stopping.
If you judge that the brakes still work adequately, drive
cautiously to your nearest dealer or shop for repairs.
 If the brakes are not working, have the vehicle towed
in for repairs. (For towing information, see page 366.)

GAUGES, METERS AND SERVICE REMINDER INDICATORS
66If the brake fluid level is correct ...
Have
the warning system checked by your Lexus dealer.
(b) Driver's Seat Belt Reminder Light
and Buzzer
Once the ignition key is turned to ºONº or ºSTARTº, the
reminder light flashes and buzzer sounds if the driver's
seat belt is not fastened. Unless the driver fastens the
belt, the light stays flashing and the buzzer stops after
about 4 to 8 seconds.
(c) Front Passenger's Seat BeltReminder Light
Once the ignition key is turned to ºONº or ºSTARTº, the
reminder light flashes if a passenger sits in the front
passenger seat and does not fasten the seat belt.
Unless the front passenger fastens the belt, the light
stays flashing.
If luggage load is placed on the front passenger seat,
depending on its weight and how it is placed on the seat,
built±in sensors in the seat cushion may detect the
pressure, causing the reminder light to come on.
(d) SRS Warning Light
The indicators come on when the ignition key is
turned to the ºACCº or ºONº position. It goes off
after about 6 seconds. This means the SRS is
operating properly.
The SRS warning light system monitors the airbag
sensor assemblies, inflators, seat belt pretensioners,
warning light, interconnecting wiring and power sources.
If either of the following conditions occurs, this indicates
a malfunction somewhere in the parts monitored by the
warning light system. Contact your Lexus dealer as
soon as possible to service the vehicle.
 The light does not come on as described above.
 The light stays on or flashes.
 The light comes on or starts flashing while driving.
If the light stays on, it indicates that the driver and front
passenger airbags fail. If the light flashes, the side
airbags and/or seat belt pretensioners fail.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
67
(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 ºFuel gaugeº
on page 57 for instructions.)
b. The fuel tank cap is not tightened securely. (See
ºFuel tank capº on page 110 for instructions.)
c. There is a problem somewhere in your engine
electrical system, automatic transmission electrical
system or electronic throttle control system.
If it comes on while you are driving in case ªc.º, have your
vehicle checked/repaired by your Lexus dealer as soon
as possible.
(g) ºABSº Warning Light
This light warns that there is a problem somewhere in
your anti±lock 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
ºONº, and will go off after about a few seconds.
When the ºABSº warning light is on (and the brake
system warning light is off), the brake system operates
conventionally but anti±lock brake system is not
assisting brake performance so that the wheels could
lock up during a sudden brake or braking on slippery

GAUGES, METERS AND SERVICE REMINDER INDICATORS
68road surfaces.
(h) Open Door Warning Light
This light remains on until all the doors are completely
closed.
(i) Low Fuel Level Warning Light
This light comes on when the fuel level in the tank
becomes
nearly empty. F ill the tank as soon as possible.
On inclines or curves, due to the movement of fuel in the
tank, the low fuel level warning light may come on earlier
than usual.
(j) Key Reminder Buzzer
This buzzer reminds you to remove the key when you
open the driver's door with the ignition key in the ºACCº
or ºLOCKº position.
How to check all the service reminder
indicators
(except the low fuel level warning light):
1. Apply the parking brake.
2. Open the door.
The following service reminder indicator should come
on. It goes off when you close the door completely.
3. Turn the ignition key to ºACCº.
The following service reminder indicator should come
on. It goes off after 6 seconds.
4. Turn the ignition key to ºONº.
The following service reminder indicators should come
on.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
69
or
The following service reminder indicators go off after 3
seconds.

or
5. Turn the ignition key to ºSTARTº.
The following service reminder indicator should come
on.
or
If any service reminder indicator or warning buzzer does
not function, either the bulb is burned out or circuit is in
need of repair. Have it checked by your Lexus dealer as
soon as possible.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
70
MULTI INFORMATION DISPLAY
13L042±1
The multi information display provides cruise
information on your vehicle's driving condition and
warning messages if your vehicle has trouble.
During ordinary driving, cruise information is
shown in the display. However, if any problem
occurs in your vehicle, a warning message appears
in place of cruise information. To change to the
cruise information display, push the ºFUNCTIONº
button.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
75
(b) Warning messages
13L052

Reminder light
W40W40
When the engine oil pressure becomes too low, the
above message appears, the reminder light flashes
and the warning tone sounds.
If this message appears while you are driving, pull off the
road to a safe place and stop the engine immediately.
Call a Lexus dealer or qualified repair shop for
assistance.
The message may appear when the oil level is extremely
low. It is not designed to indicate low oil level, and the
oil level must be checked using the oil level dipstick.NOTICE
Do not drive the vehicle with the warning messagedisplayed ± even for one block. It may ruin theengine.
W41W41