2004 TOYOTA PRIUS stop start

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Toyota hybrid system combines a gaso-
line engine and electric motor power to
improve the fuel economy and minimize
the emissions as well as to provide
better power performance than the ordi-
nary gasolinepowered vehicles.
Depending on the driving condition, the
vehicle runs on the best combination of;
Gasoline engine power
Electric motor power generated by
the gasoline engine
Electric motor power of the hybrid
vehicle battery
Furthermore, the energy is efficiently used
in the following ways:
When stopping the vehicle, the gaso-
line engine is automatically stopped.
When applying the brakes or decelerat-
ing, electricity is converted from the
turning force of the wheels and stored
in the hybrid vehicle battery. (This is
called regenerative brake.)
Since the battery is charged by the
gasoline engine as needed, it does not
require charging from an outside
source like an electric vehicle.
If you do not use the vehicle for a
long time (2 weeks or more), the hy-
brid vehicle battery and auxiliary battery
will discharge and their condition is li-
able to decline. Therefore, in order to
make up for discharging, charge them
once in every 2 weeks for about 30
minutes by starting the hybrid system
with all electrical components turned off.Basic operations are described below. Be-
sides, Toyota hybrid system performs vari-
ous controls depending on the operating
condition: The “Energy Monitor” screen
tells you which power is used currently.
Toyota hybrid system Toyota hybrid system
operating condition

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INFORMATION:
The gasoline engine starts and stops
automatically. (It stops during a low
load driving, deceleration or when the
vehicle is stopped.)
If the “READY” light remains on, you
can start your vehicle using the electric
motor even with the gasoline engine
stopped.
The gasoline engine may not stop auto-
matically in the following conditions:
During gasoline engine warmup
 During hybrid vehicle battery charg-
ing
 During low or high hybrid vehicle
battery temperature The vehicle runs in combination with
the gasoline and electric power. Pay
special attention to the following items.
Be careful of high voltage and high
temperature.
Your vehicle is equipped with the orange
colored cables connected to the hybrid
vehicle battery (about 200 V) and to other
components that are all high voltage.
CAUTION
Do not touch or come in contact with
orange cables or battery terminals.
Electric shock may cause serious in-
jury or death. Read all caution labels.
An electric motor, coolant radiator and
some other parts reach high temperature
while driving. Caution labels are applied to
these parts. Carefully observe the instruc-
tions on these caution labels.
CAUTION
Never remove or disassemble any
high voltage part, high voltage cables
(orange color) and their connectors.
It may cause death or serious injury.
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Inverter unit
Hybrid vehicle battery
Service
plug
High volt-
age cables
Air conditioning
compressor
High voltage
cables
Do not touch the service plug.
The service plug is installed in the left
side trim of the luggage compartment. It
is provided to disable high voltage current
from the hybrid vehicle battery when the
vehicle is in need of repairs at a Toyota
dealer.
CAUTION
The shaded parts in the illustration
are subjected to high voltage.
Inappropriate handling may cause
an electric shock resulting in seri-
ous injury or death. Never touch
any item in shaded area.
Precautions for use

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These high voltage parts or cables
consisting of an electromagnetic
shielding structure produce relatively
the same amount of electromagnetic
waves as conventional gasoline
fueled vehicles or home electric ap-
pliances.
As unwanted noise may occur in the
reception of mobile radios, contact
your Toyota dealer for installation or
removal.
Always keep your hybrid vehicle’s driv-
ing characteristics in mind.
CAUTION
The driver should pay full attention
around the vehicle especially when it
is driven only by the electric motor
(with the gasoline engine stopped).
People in the immediate area might
misjudge the hybrid vehicle move-
ment based on the absence of the
regular engine noise.
When the hybrid system is started or
stopped, you may hear a sound coming
from the hybrid vehicle battery in the
luggage compartment. However, this
does not indicate any trouble.
As the vehicle runs with both the gaso-
line engine and electric motor, you may
hear a motor sound coming from the
engine compartment.
If the “READY” light is on, you can
start even though the gasoline engine
may be off.
When you shift the shift lever to “B”
and release it to its original position
and your foot from the accelerator ped-
al, engine braking will be applied. How-
ever, during high speed driving you
may feel that deceleration by engine
braking is less than that of ordinary
vehicle.
Be sure to put the hybrid transaxle in
“P” when parking.
In “N”, the hybrid vehicle battery assembly
is not charged, even if the gasoline en-
gine is operating. You cannot run your
vehicle if the hybrid transaxle is left in “N”
for a long time because the hybrid vehicle
battery assembly will be discharged. When you leave your vehicle, apply the
parking brake to put the hybrid trans-
axle in “P” and be sure to carry the
key with you and lock all the doors.
If you leave the hybrid system in “ACC”
or “IG
−ON”, the hybrid system may not
start because the auxiliary battery will be
discharged.
CAUTION
When you leave your vehicle, be
sure to shut off the hybrid system.
Be sure to put the hybrid transaxle
in “P” because the vehicle can start
with the “READY” light on and the
engine stopped (no engine sound
and vibration). When the “READY”
light is on, if you leave your ve-
hicle in shift position other than
“P” and “N”, the vehicle will creep
and start abruptly with the accelera-
tor pedal being depressed by mis-
take. This may cause death or seri-
ous injury.

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INFORMATION
When changing the mode, be sure
to push both “ ” (lock) and “ ”
(panic) buttons firmly, or panic
alarm may be activated.
 This operation will not change the
wireless remote control unlocking
function.
 In the single or driver’s door un-
locking mode, if you get into the
vehicle from the driver’s door carry-
ing the smart key, all the smart un-
locking controls activated by the
smart key will be stopped for secu-
rity. If you get out of the vehicle
from the driver’s door carrying the
smart key and get out of the effec-
tive range of the smart function,
unlocking control by the smart key
will be possible. However, unlocking
control may not be carried out for
5 seconds after you get out from
the vehicle. In this case, operate
unlock control again after 5 sec-
onds.
BATTERY POWER SAVING
When doors are locked, the smart entry
and start system transmits electromagnetic
waves to the outside of the vehicle at
regular intervals. For this reason, the ve-
hicle battery will be discharged if the ve-
hicle is left for a long time. If the key is
left within the effective range of the smart
function outside of the vehicle, the key
and the vehicle transmit electromagnetic
waves periodically. If these conditions con-
tinue for a long time, the battery in the
key and vehicle will be discharged.
To prevent the batteries from being dis-
charged, the smart function is automatical-
ly deactivated in the following conditions:
If there is no response from the key
for more than 14 days
If the key is left within the effective
range of the smart function outside of
the vehicle for more than 10 minutes To reactivate the smart function, perform
any of the following:
(a) Press the lock button on the outside front door handle or back door while
carrying the smart key.
(b) Perform a wireless remote control op- eration.
(c) Insert and turn the mechanical key in the keyhole of the driver’s door.

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ACTIVATING PANIC MODE
Pushing the “
” (panic) switch for 1
second blows the horn intermittently
and flashes the headlights, tail lights
and emergency flashers and turns on
the interior light.
The “
” (panic) switch is used to deter
vehicle theft when you witness anyone at-
tempting to break into or damage your
vehicle.
The alarm will last for one minute. To stop
the alarm midway, do the follows:
Push any switch on the key.
Put the hybrid system in the “IG −ON”
mode. The panic mode does not work in “IG
−ON”
mode.
The alarm function can be activated or
deactivated. For details, contact your
Toyota dealer.
WIRELESS REMOTE CONTROL KEY
The wireless remote control key is an
electronic component. Observe the follow-
ing instructions in order not to cause dam-
age to the key.
Do not leave the key in places where
the temperature becomes high such as
on the dashboard.
Do not disassemble it.
Avoid knocking it hard against other
objects or dropping it.
Avoid putting it in water.
If your vehicle is equipped with smart
entry and start system, you can use up
to 5 master keys for the same vehicle. In
case of the vehicle not equipped with
smart entry and start system, up to 4
master keys are avairable. Contact your
Toyota dealer for detailed information.
If the wireless remote control key does
not actuate the doors or alarm or operate
from a normal distance, or indicator light
on the key is dimmed or does not come
on:
Check for closeness to a radio trans-
mitter such as a radio station or an
airport which can interfere with normal
operation of the key.
The battery may have been consumed.
Check the battery in the key. To re-
place the battery, see “REPLACING
THE BATTERY” on page 36.
If you lose your key, contact your Toyota
dealer as soon as possible to avoid the
possibility of theft, or an accident. (See “If
you lose your keys” on page 257.)
For vehicles sold in U.S.A.
FCC ID: MOZB21TG
MADE IN JAPAN
FCC ID: MOZB21RG
MADE IN JAPAN
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
(1) This device may not cause harmful
interference, and (2) this device must
accept any interference received, includ-
ing interference that may cause unde-
sired operation.

44
NOTICE
Be sure to return the support rod to
its clip before closing the hood. Clos-
ing the hood with the support rod
inserted into the slot could cause the
hood to bend.
Theft deterrent system
21p028a
To deter vehicle theft, the system is
designed to sound an alarm if any of
the doors or hood is forcibly unlocked
or the battery terminal is reconnected
when the vehicle is locked.
The alarm blows the horn intermittently
and flashes the headlights and tail lights
and other exterior lights.
This function can be deactivated or acti-
vated. For details, contact your Toyota
dealer.
21p007b
SETTING THE SYSTEM
When the key is inserted into the key
slot:1. Remove the key.
In case of the smart entry and start
system: 1. Stop the hybrid system and open the driver ’s door
The indicator light will start flashing. (See
“Hybrid vehicle immobilizer system” on
page 20 for details.) 2. Have all passengers get out of the vehicle.
3. Close and lock all the doors and hood.

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The indicator light will come on when all
the doors and hood are closed and
locked.
The system will automatically be set after
30 seconds. When the system is set, the
indicator light will start flashing again.4. After making sure the indicator light starts flashing, you may leave the ve-
hicle.
Never leave anyone in the vehicle when
you set the system, because unlocking
from the inside will activate the system.
WHEN THE SYSTEM IS SET
Activating the system
The system will sound the alarm under
the following conditions:
If any of the doors is unlocked or if
the hood is forcibly opened without the
mechanical key, wireless remote control
transmitter or smart function.
If the battery terminal is disconnected
and then reconnected.
The indicator light will come on when the
system is activated. If any of the doors are unlocked without
the mechanical key, wireless remote con-
trol transmitter or smart function and the
key is not in the key slot, all the doors
will be automatically locked again.
After 1 minute, the alarm will automatically
stop and the indicator light will starts
flashing again.
Reactivating the alarm
Once set, the system automatically resets
the alarm after the alarm stops.
The alarm will activate again under the
same circumstances described in
“Activating the system”.
Stopping the alarm
The alarm will be stopped by the following
two ways:
Turn the hybrid system to “IG
−ON”.
Unlock any of the doors with the me-
chanical key, wireless remote control
transmitter or smart function.
If the auxiliary battery becomes dis-
charged due to the vehicle being unused
for a long time, etc., when the battery is
recharged or replaced, the system will
sound the alarm. If this happens, immedi-
ately stop the alarm. CANCELLING THE SYSTEM
The system will be cancelled by the
above mentioned two ways.
If the tail lights come on for 2 seconds,
the theft deterrent system has been
alarmed. Check to see if there is any
abnormality on your vehicle.
TESTING THE SYSTEM
1. Open all the windows.
2. Set the system as described above. The doors should be locked with the
mechanical key, wireless remote control
transmitter or smart function. Be sure
to wait until the indicator light goes off
or starts flashing.
3. Unlock any door from the inside. The system s hould activate the alarm.
4. Stop the alarm as described above.
5. Repeat this operation for the other doors and hood. When testing the back
door, also check that the system is
activated when the auxiliary battery ter-
minal is disconnected and then recon-
nected. When testing the hood, release
the lock with the hood lock release
lever and raise the hood.
If the system does not work properly,
have it checked by your Toyota dealer.

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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
aboveAutomatic light cut off system
The lights automatically turn off when the
driver ’s door is opened with the hybrid
system off. To turn them on again, press
the “POWER” switch twice from the off
setting to select the “IG
−ON” mode with-
out depressing the brake pedal or actuate
the headlight switch. If you are going to
park for over one week, make sure the
headlight 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.
To turn on the other exterior lights and
instrument panel lights, twist the knob to
the position 1.
To turn off the daytime running light sys-
tem, twist the knob to the position 2 with
the headlights on, or turn the hybrid sys-
tem off.
*: Equipped on vehicles sold in Canada
Headlights and turn signals
(without automatic light control system)