2006 TOYOTA PRIUS key battery

12
12p063a
Not in use
When stopping, the gasoline engine auto-
matically shuts off.
12p064a
Charging hybrid battery
When the hybrid battery power is insuffi-
cient, the gasoline engine charges the hy-
brid battery. The system always supplies
electricity at a constant level. Your vehicle is equipped with push but-
ton start system. The hybrid system
will start automatically by pressing the
“POWER” switch briefly with the brake
pedal depressed.
With smart function
1. Carry the key with you.
2. Press the “POWER” switch briefly with the brake pedal depressed.
Without smart function
1. Insert the key.
2. Press the “POWER” switch briefly with the brake pedal depressed.
The “READY” light flashes and stays on.
Two beeps sound after a few seconds,
and the hybrid system will start. (If the
ambient temperature is low such as during
winter, it may take time until the “READY”
light comes on.) You cannot start your
vehicle when the brake pedal is not de-
pressed. (For details, see “How to start
the hybrid system—” on page 348.)
The engine may not start even with the
“READY” light on.
Starting your vehicle

15

As the vehicle runs with both the gaso-
line engine and electric motor, you may
hear a motor sound coming from the
engine compartment.
When the hybrid system is started or
stopped, you may hear a sound coming
from the hybrid battery in the luggage
compartment. However, this does not
indicate any trouble.
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 battery assembly is not
charged, even if the gasoline engine is
operating. You cannot run your vehicle if
the hybrid transaxle is left in “N” for a
long time because the hybrid battery as-
sembly 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 12 volt battery will be
discharged.
If the vehicle is parked for a long time,
the hybrid battery will discharge gradually.
To keep the hybrid battery in good condi-
tion, drive the vehicle at least once every
several months for at least 30 minutes or
ten miles. If the hybrid battery becomes
fully discharged and the vehicle will not
start even with a jump −start to the 12 volt
battery, contact your Toyota dealer.
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.

24
For vehicles sold in Canada
This device complies with RSS−210 of
industry Canada. Operation is subject to
the following two conditions:
(1) This device may not cause interfer-
ence, and (2) this device must accept
any interference, including interference
that may cause undesired operation of
the device.
21p120a
1. Locking and unlocking
2. Starting the hybrid system
By carrying a smart key, you can lock
and unlock the doors and start the hy-
brid system.
For locking the doors, see “Locking the
doors with smart function” on page 30.
For unlocking the doors, see “Unlocking
the door(s) with smart function” on page
31. For starting the hybrid system, see
“Push button start system” on page 138.
If the smart key battery is discharged, the
smart function cannot be used. Use the
mechanical key attached to the smart key
by inserting it in the driver’s door keyhole
to lock or unlock door. To start the hybrid
system, insert the smart key into the key
slot. In order to activate the smart func-
tion, the battery should be replaced. For
details, see “—Replacing battery” on page
38.
You can deactivate the smart function by
using the cancel switch. In this case, all
the smart function will be deactivated. For
details, see “Deactivating the smart func-
tion” on page 34.
Smart entry and start system

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(f) The smart key was brought outsidethe vehicle.
When a door other than the driver ’s door
is opened or closed with the hybrid sys-
tem not to be turned off, it is determined
that the smart key is not in the vehicle.
Inside alarm: One beep
Outside alarm: 3 beeps
Warning light: On (g) Preventing the key from being
locked inside the vehicle
When you close the door with the hybrid
system off but with the smart key left in
the vehicle, and attempt to lock all the
doors using smart locking function, it is
determined that the smart key is in the
vehicle.
Outside alarm: One beep (sounds for 2
seconds)
INFORMATION
 This function may not operate when
the smart key is left on the instru-
ment panel, luggage cover, floor or
in the glove box.
 The function may operate if the
smart key is brought outside but it
is very close to the door window or
door handle.
(h) Low smart key battery
When the hybrid system is turned to
“ACC” or “OFF” about 20 minutes after
the hybrid system is turned on or to “IG −
ON”, it is determined that the smart key
battery voltage is low.
Inside alarm: One beep (i) Outside of effective range
When the “POWER” switch is pressed, it
is determined that the smart key is not in
the vehicle.
Inside alarm: One beep
Warning light: On (for 5 seconds)
(j) Open door warning
When you attempt to lock all the doors
using smart locking function with the hy-
brid system turned off but with any door
open.
Outside alarm: One beep (sounds for 10
seconds)
Alarms will be turned off by either of
the following operations:
Closing all the doors
Pressing the unlock button on the
smart key

29
Warning and its meaningInside warning alarm
Outside warning alarmWarning lightCauses
One beep
(sounds continuously)——The driver ’s door was opened when the hybrid system was in “ACC”
or “IG −ON” and when the transaxle was in a position other than “P”.
One beep
(sounds continuously)One beep
(sounds continuously)OnThe driver brought out the smart key from the vehicle with the hybrid
system not to be turned off and with the transaxle in a position other
than “P”.
Beeps
(sound intermittently)——The driver ’s door was opened when the hybrid system was in “ACC”
and when the transaxle was in “P”.
One beep3 beepsOnThe driver brought out the smart key from the vehicle with the hybrid
system not to be turned off and with the transaxle in “P”.
—One beep
(sounds for 2 seconds)OnThe lock switch was pressed with the hybrid system not to be turned
off and with the transaxle in “P”.
One beep3 beepsOnThe passenger brought out the smart key from the vehicle with the
hybrid system not to be turned off.
—One beep
(sounds for 2 seconds)—The lock switch was pressed when the hybrid system was off but with
the smart key left in the vehicle.
One beep——The key battery voltage become about 2 V. (3 V for normal operation)
One beep—On
(for 5 seconds)The “POWER” swi t c h was pr es s ed when the smar t key was not in the
effective range of the system.
—One beep
(sounds for 10 seconds)—The lock switch was pressed when the hybrid system was off but any
door was opened.

33
INFORMATION
When changing the mode, be sure
to push both lock and panic but-
tons 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.

34
INFORMATION
To maintain communication with the
vehicle, smart keys use builtin bat-
tery power. The battery service life
is about 1 to 3 years on average. If
battery power becomes insufficient,
replace the battery with a new one.
The smart key continually receives
electromagnetic waves, and if it re-
ceives strong electromagnetic waves
over a period of time, the battery
can be drastically run down. There-
fore, avoid storing smart keys near
any electrical appliances.Here is a list of electrical ap-
pliances which may have adverse
effects on the smart key perfor-
mance: TVs, personal computers,
cellular phone or cordless phone
recharger units, electric light stands
and fluorescent desk lights
Note that you should always keep
such electrical appliances at least 1
m (3 ft.) away from the smart key.
21p152
1. Smart function is on.
2. Smart function is off.
DEACTIVATING THE SMART FUNCTION
The cancel switch for this function is
located at the bottom of the instrument
panel on the driver side. When you
push the switch, the smart function will
be deactivated. Pushing the switch
again will reactivate the function.
When the smart function is deactivated,
use a mechanical key or wireless remote
control function key to lock and unlock the
doors. To start the hybrid system, insert
a smart key into the key slot. If you do not intend to drive your vehicle
for a long time, push the cancel switch to
deactivate the smart function.
INFORMATION
The smart function will be deactivated
in the following cases:
The cancel switch is turned on.
The smart key is inserted into the
key slot.
The battery of the smart key is dis-
charged.

36
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 available. 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 bat-
tery” on page 38.
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 375.)
21p013f
Locking operation
21p014f
Unlocking operation
—Locking and unlocking
doors