Toyota 2004 Prius Owner's Manual page 120

Any of the following conditions may oc-
cur, but do not indicate the malfunc-
tion:
D
The yellow warning light may stay on
for about 60 seconds after "IG−ON"
mode is enabled. It is normal if it turns
off after a while.
D
Depressing the brake pedal repeatedly
may turn on the red warning light and
buzzer. It is normal if the light turns off
and the buzzer stops sounding after a
few seconds.
D
You may hear a small sound in the
engine compartment after the hybrid
system is started or the brake pedal is
depressed repeatedly. This is a pump
pulsating sound of the brake system,
and it is not a malfunction.
D
You may hear a motor sound in the
engine compartment when the brake
pedal is depressed with the hybrid sys-
tem off.
D
The brake pedal stroke may be short
when you press the "POWER" switch
with the brake pedal depressed.
120
(b) Driver's Seat Belt Reminder Light
and Buzzer
This light and buzzer remind
buckle up the driver's seat belt.
Once the "IG−ON" mode is enabled, the
reminder light flashes and the buzzer
sounds if the driver's seat belt is not fas-
tened. Unless the driver fastens the belt,
the light keeps on flashing and the buzzer
sounds 4 to 8 seconds.
(c) Front Passenger's Seat Belt
Reminder Light
This light reminds you to buckle up the
front passenger's seat belt.
Once the "IG−ON" mode is enabled, the
reminder light flashes if a passenger sits
in the front passenger seat and does not
fasten the seat belt. Unless the front pas-
senger fastens the belt, the light stays
flashing.
If luggage or other 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) Malfunction Indicator Lamp
This lamp comes on when the "IG−ON"
you to mode is enabled and goes off after the
hybrid system starts. This means that
the warning light system is operating
properly.
If the lamp remains on or the lamp
comes on while driving, first check the
following:
D
Empty fuel tank
If the fuel tank is empty, refuel immedi-
ately.
This case is a temporary malfunction. The
malfunction indicator lamp will go off after
taking several driving trips.
If the lamp does not go off even after
several trips, contact your Toyota deal-
er as soon as possible.
D
There is a problem somewhere in the
hybrid system or warning light system
itself.
Contact your Toyota dealer as soon as
possible to service the vehicle.