Lexus LX 470 1998 Owner's Manual page 60

(j) 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.
D If it is loose or broken, the generator will not charge the battery
properly.
D 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.
(k) Low Fuel Level Warning Light
This light comes on when the fuel level in the tank becomes nearly
empty. Fill 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.
GAUGES, METERS AND SERVICE REMINDER INDICATORS
(l) Low Washer Fluid Warning Light
This light comes on when the fluid level in the tank becomes nearly
empty. Fill the tank as soon as possible.
(m) Key Reminder Buzzer
This buzzer reminds you to remove the key when you open the
driver's door with the ignition key in the "ACC" or "LOCK"
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. Place the four−wheel drive control lever in "N" position and the
selector lever in "P" position.
4. Turn the ignition key to "ACC".
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