Lexus LX 470 1998 Owner's Manual page 57

GAUGES, METERS AND SERVICE REMINDER INDICATORS
D Brake system failure warning
The light may stay on for about 60 seconds after the engine is started.
It is normal if it goes out after a while.
If the brake system warning light stays on even with the parking
brake being released, the brake system may fail. Contact your Lexus
dealer.
If the hydraulic boost pressure is lowered, the warning light comes
on and buzzer sounds continuously. Immediately stop your vehicle
at a safe place and contact your Lexus dealer. If this is a case the
brakes may not work properly. If they do not work well, depress the
brake pedal firmly.
Depressing the brake pedal repeatedly may turn on the warning light
and buzzer. It is normal if the light goes out and the buzzer stops
sounding after a few seconds.
CAUTION
Continued driving with an inoperative brake booster is
dangerous.
40
(b) Driver's Seat Belt Reminder Light and Buzzer
Once the ignition key is turned to "ON" or "START", 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 Belt Reminder Light
Once the ignition key is turned to "ON" or "START", 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.