2002 TOYOTA PRIUS ignition system

47
NOTICE
Do not perform any of the following
changes without consulting your
Toyota dealer. Such changes can in-
terfere with proper operation of the
front seat belt pretensioners in some
cases.
Installation of electronic devices
such as a mobile twoway radio,
cassette tape player or compact
disc player
 Repairs on or near the front seat
belt retractor assemblies
 Modification of the suspension sys-
tem
 Modification of the front end struc-
ture
 Attachment of a grille guard (bull
bar, kangaroo bar, etc.), snowplow,
winches or any other equipment to
the front end
 Repairs made on or near the front
fenders, front end structure or con-
sole
22p010
This front seat belt pretensioner system
has a service reminder indicator to inform
the driver of operating problems. If either
of the following conditions occurs, this in-
dicates a malfunction of the airbags or
pretensioners. Contact your Toyota dealer
as soon as possible to service the ve-
hicle.
The light does not come on when the
ignition key is turned to the “ACC” or
“ON” position, or remains on.
The light comes on or flashes while
driving.
If either front seat belt does not retract
or can not be pulled out due to a
malfunction or activation of the relevant
front seat pretensioner.
22p012
In the following cases, contact your Toyota
dealer as soon as possible:
The front seat belt pretensioner assem-
bly or surrounding area has been dam-
aged.
The front part of the vehicle (shaded
in the illustration) was involved in an
accident that was not severe enough to
cause the front seat belt pretensioners
to operate.
Either front seat belt pretensioner as-
sembly or surrounding area is
scratched, cracked, or otherwise dam-
aged.

54
Do not modify or remove any wir-
ing. Do not modify, remove, strike
or open any components, such as
the steering wheel pad, steering
wheel, column cover, front passen-
ger airbag cover, front passenger
airbag or airbag sensor assembly.
Doing any of these may cause sud-
den SRS front airbag inflation or
disable the system, which could re-
sult in death or serious injury.
Failure to follow these instructions
can result in death or serious injury.NOTICE
Do not perform any of the following
changes without consulting your
Toyota dealer. Such changes can in-
terfere with proper operation of the
SRS front airbag system in some
cases.
 Installation of electronic devices
such as a mobile twoway radio,
cassette tape player or compact
disc player
 Modification of the suspension sys-
tem
 Modification of the front end struc-
ture
 Attachment of a grille guard (bull
bar, kangaroo bar, etc.), snowplow,
winches or any other equipment to
the front end
 Repairs made on or near the front
fenders, front end structure, con-
sole, steering column, steering
wheel or dashboard near the front
passenger airbag
22p010
This SRS front airbag system has a ser-
vice reminder indicator to inform the driver
of operating problems. If either of the fol-
lowing conditions occurs, this indicates a
malfunction of the airbags. Contact your
Toyota dealer as soon as possible to ser-
vice the vehicle.
The light does not come on when the
ignition key is turned to the “ACC” or
“ON” position, or the light remains on.
The light comes on while driving.

60
22p010
This SRS side airbag system has a ser-
vice reminder indicator to inform the driver
of operating problems. If either of the fol-
lowing conditions occurs, this indicates a
malfunction of the airbags. Contact your
Toyota dealer as soon as possible to ser-
vice the vehicle.
The light does not come on when the
ignition key is turned to the “ACC” or
“ON” position, or the light remains on.
The light comes on or flashes while
driving.
22p030e
In the following cases, contact your Toyota
dealer as soon as possible:
The SRS side airbags have been in-
flated.
The portion of the doors (shaded in the
illustration) were involved in an acci-
dent that was not severe enough to
cause the SRS side airbags to inflate.
The surface of the seats with the side
airbag (shaded in the illustration) is
scratched, cracked, or otherwise dam-
aged.
NOTICE
Do not disconnect the battery cables
before contacting your Toyota dealer.

82
23p001a
HEADLIGHTS
To turn on the following lights: Twist
the headlight/turn signal lever knob.
Position
1—Parking, tail, license plate,
side marker and instrument panel lights
Position
2—Headlights and all of the
above
Vehicles sold in U.S.A.: When the head-
lights are on, the headlight indicator lights
up in the instrument cluster.
Vehicles sold in Canada: When the tail
lights are on, the tail light indicator lights
up in the instrument cluster. The lights automatically turn off when the
driver ’s door is opened with the ignition
turned off. To turn them on again, turn the
key to the “ON” position or actuate the
headlight switch. If you are going to park
for over one week, make sure the head-
light switch is off.
When the headlight switch is turned to the
first or second clickstop, the brightness of
the instrument cluster will be reduced
slightly unless the instrument panel light
control dial is turned fully on.
NOTICE
To prevent the battery from being dis-
charged, do not leave the lights on
longer than necessary when the hy-
brid system is not running.
Daytime running light system
The headlights turn on at reduced intensi-
ty when the parking brake is released with
the hybrid system 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 position 1.
Twist the knob to the position 2 to turn
the headlights to full intensity for driving
at night.
Headlights and turn signals

89
24p013
At the first blinking of the light, the master
warning light in the instrument cluster
comes on and the message appears on
the multi−information display to remind the
driver to fill fuel.
24p010a
The fuel system malfunctions in the fol-
lowing cases, so contact your Toyota
dealer.
All the segments blink.
The “E” mark and the segments indi-
cating remaining fuel blink.
24p003b
High coolant temperature
warning light in red
Low coolant temperature
indicator light in blue
The indicator and warning lights indi-
cate the coolant temperature when the
ignition switch is on. The hybrid sys-
tem operating temperature will vary
with changes in weather and hybrid
system load.
The red high coolant temperature warning
light will come on when the ignition key
is turned to the “ON” position. After a few
seconds, the light will go off.
If your coolant temperature is cool with
the ignition switch on, the blue low cool-
ant temperature indicator light comes on.
If it keeps lighting on with the hybrid sys-
tem fully warmed, contact your Toyota
dealer as soon as possible to service the
vehicle.
Coolant temperature indicator
an d warn in g lig h t s

92
(k)Close all doors.
(l) Fill up tank.
(m) Stop and check.
(n) Key reminder Remove key.
buzzer
(o) Shift position Put the selector lever . reminder in “P” position.
buzzer
If the indicator or
buzzer comes on ...
Do this.
(in red)
(a) Brake System Warning Light and
Buzzer
This light comes on in the following cases
when the ignition key is in the “ON” posi-
tion.
When the parking brake is applied...
This light comes on for a few seconds
when the ignition key is turned to the
“ON” position even after the parking brake
is released.
When the brake fluid level is low...
CAUTION
It is dangerous to continue driving
normally when the brake fluid level is
low.
When the regenerative brake system
is fails...
When the hydraulic brake booster
fails...
If the hydraulic booster causes a problem
resulting in poor braking performance, the
warning light comes on and buzzer sounds
continuously. Have your vehicle checked at your
Toyota dealer in the following cases:
The light does not come on even if the
parking brake is applied when the igni-
tion key is in the “ON” position.
The light does not come on even if the
ignition key is turned on with the park-
ing brake released.
A warning light turning on briefly during
operation does not indicate a problem.
CAUTION
If any of the following conditions oc-
curs, immediately stop your vehicle at
a safe place and contact your Toyota
dealer.
The light does not turn off even
after the parking brake is released
while the hybrid system is running.
The warning buzzer comes on to-
gether with the warning light.
In either case, this can indicate that
the brakes may not work properly and
your stopping distance will become
longer. Depress the brake pedal firmly
and bring the vehicle to an immediate
stop.

93
The brake system warning light re-
mains on together with the “ABS”
warning light.
In this case, not only the antilock
brake system will fail but also the
vehicle will become extremely unsta-
ble during braking.
Any of the following conditions may oc-
cur, but do not indicate the malfunc-
tion:
The light may stay on for about 60
seconds after the ignition key is turned
to the “ON” position. It is normal if it
turns off after a while.
Depressing the brake pedal repeatedly
may turn on the warning light and
buzzer. It is normal if the light turns off
and the buzzer stops sounding after a
few seconds.
You may hear a small sound in the
engine compartment after the hybrid
system is started or the brake p edal is
depressed repeatedly. This is a pump
pulsating sound of the brake system,
and it is not a malfunction. (b) Driver’s Seat Belt Reminder Light
and Buzzer
This light and buzzer remind you to
buckle up the driver’s seat belt.
Once the ignition key is turned to ”ON” or
”START”, the reminder light flashes and
the buzzer sounds if the driver ’s seat belt
is not fastened. 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 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. (d) Discharge Warning Light
This light warns that the auxiliary battery
is being discharged.
If it comes on while you are driving, there
is a problem somewhere in the charging
system.
The hybrid system will continue to oper-
ate, however, until the auxiliary battery is
discharged. Turn off the air conditioning,
blower, radio, etc., and drive directly to
the nearest Toyota dealer or repair shop.

94
(e) Malfunction Indicator Lamp
This lamp comes on when the ignition
key is turned to the “ON” position and
goes off after the engine 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:
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 will not go off even after
several trips, contact your Toyota deal-
er as soon as possible.
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. Emissions inspection and maintenance
(I/M) programs
Your vehicle may not pass a state emis-
sion inspection if the malfunction indicator
lamp remains on. Contact your Toyota
dealer to check your vehicle’s emission
control system and OBD (On
−Board Diag-
nostics) system before taking your vehicle
for the inspection.
For details, see “Emissions inspection and
maintenance (I/M) programs” on page 198
in Section 7.
(f) Master Warning Light
()
If the master warning light comes on, the
warning light for the faulty system is high-
lighted or the message such as “When
you park your car, make sure you shift to
Park P.” and “The batteries will not charge
if the shifter is in N” appears on the mul-
ti −information display. (See “Service re-
minder indicators and warning buzzers—
—Multi −information display” on page 97
in this section or “Precautions for use” on
page 12 in Section 1 −2 or “Fuel gauge”
on page 88 in Section 2− 4 for instruc-
tions.) (g) Output Control Warning Light
()
This light comes on when the ignition
switch is on. It goes off when the electric
motor is ready to run.
The warning light comes on when the hy-
brid vehicle battery temperature is low or
high, or the hybrid vehicle battery capacity
is decreased with the selector lever at “R”
during driving. If the light comes on, the
power will be limited. Drive your vehicle
without hard acceleration.
(h) Low Engine Oil Pressure Warning
Light
This light warns that the engine oil pres-
sure is too low.
If it flickers or stays on while you are
driving, pull off the road to a safe place
and stop the engine immediately. Call a
Toyota dealer or qualified repair shop for
assistance.
The light may occasionally flicker when
the engine is idling or it may come on
briefly after a hard stop. There is no
cause for concern if it then goes out when
the engine is accelerated slightly.
The light may come on 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 level dipstick.