power TOYOTA PRIUS 2007 2.G Service Manual

138
25p118
The push button start system is used to
start or stop the hybrid system and select
“ACC”, “IG−ON” or “OFF” mode. (See
“—Selecting the push button start system
mode” on page 140 and “How to start the
hybrid system” on page 350.) The system
contains the following components.
1. “POWER” switch
2. Key slot
3. Brake pedal
4. Electronic shift lever
21p006a
Your vehicle keys and the key slot are
different shapes from conventional ones.
Keep the following in mind when operating
the key:
When inserting the key, be sure to
push it in all the way.
When pulling out the key, be careful
because it will be pushed out by the
spring and it might fly out.
If the key cannot be pulled out, push
it in all the way again, then pull it out.
CAUTION
Do not put your finger into the key
slot. Your finger might be injured.
NOTICE
Observe the following instructions, or
the key mechanism might be damaged
and will not work properly.
 The key should be operated with a
clean hand and fingers.
 Do not insert the key forcibly.
 Do not insert any key other than
genuine formal keys into the key
slot.
 Do not pull out the key forcibly
when it cannot be removed.
 Do not put water, oil, foreign ob-
jects, etc. into the key slot.
 Do not insert a wet, oily or dam-
aged key into the key slot.
 Do not affix a sticker on the key.
 Do not insert the key in the wrong
way.
Push button start system— —Key slot

139
Do not pull out the key ring when
removing the key out of the key
slot.
Should you find anything unusual,
contact your Toyota dealer as soon as
possible.
25p113
Press the “POWER” switch slowly and
surely. Quick operation may not activate
the desired mode.
CAUTION
Do not press the switch while driv-
ing, except in an emergency.
In hot weather, the switch surface
may get hot. Take care not to get
burned.
NOTICE
Observe the following instructions or
the push button start system may not
work properly.
 The switch should be operated with
a clean finger. Do not use an oily
or dirty finger.
 Be careful not to spill water or oth-
er liquid on the switch.
In the following conditions, contact
your Toyota dealer as soon as pos-
sible.
 If the indicator on the switch
flashes in amber, the system may
be malfunctioning. Once you turn
the power off, it may not turn on
again.
 If you find anything unusual in the
switch function, refrain from using
the vehicle.
In the following condition, have your
vehicle inspected by your Toyota deal-
er.
 The indicator light on the “POWER”
switch does not come on when the
clearance lights are turned on.
—“POWER” switch

140
25P105b
Without depressing the brake pedal
Carrying a smart key allows you to op-
erate the “POWER” switch without the
key being inserted into the key slot.
Each time you press the “POWER”
switch briefly without the brake pedal
depressed, the hybrid system mode
changes in the order of “OFF”, “ACC”,
“IGON” and then back to “OFF”.
The smart function can be set to become
inoperative using the smart cancel switch.
For details, see “Deactivating the smart
function” on page 34.1) “ACC” (Green indicator is turned on)
Accessories such as the radio operate.
Pressing the “POWER” switch briefly with-
out depressing the brake pedal in the
“OFF” mode turns on this mode.
In the “ACC” mode, pressing the “POW-
ER” switch briefly while depressing the
brake pedal will start the hybrid system.
If you leave your vehicle in the “ACC”
mode for about an hour, the hybrid system
is automatically turned off.
2) “IGON” (Amber indicator is turned
on)
All accessories are operable.
Pressing the “POWER” switch briefly with-
out depressing the brake pedal in the
“ACC” mode turns on this mode.
In the “IG
−ON” mode, pressing the “POW-
ER” switch briefly while depressing the
brake pedal will start the hybrid system.
However, if “N” position is selected, the
hybrid system will be turned to the “OFF”
mode. 3) “OFF” (Indicator is turned off)
The hybrid system is off.
You may hear a motor sound in the en-
gine compartment for a few seconds after
the system is turned off and about 90
seconds have passed.
The hybrid vehicle immobilizer system is
automatically set. See “Hybrid vehicle im-
mobilizer system” on page 21.
—Selecting the push button
start system mode
(with smart function—on some models)

141
25P106b
With the brake pedal depressed
The hybrid system will start and stop
by pressing the “POWER” switch briefly
with the brake pedal depressed.
You may hear a motor sound in the en-
gine compartment when the brake pedal is
depressed with the hybrid system off.
1) “START” (Amber indicator comes on
for a few seconds.)
The hybrid system is ready to operate
and all accessories are operable. (“IG
ON”)
Press the “POWER” switch with the brake
pedal depressed.For starting tips, see “How to start the
hybrid system—” on page 350.
If in an emergency, you must turn the
hybrid system off while the vehicle is
moving, press the “POWER” switch for
more than 3 seconds. At this time, the
“ACC” mode and shift position “N” are
automatically enabled.
2) “OFF” (Indicator is turned off)
The hybrid system is off.
You may hear a motor sound in the en-
gine compartment for a few seconds after
the system is turned off and about 90
seconds have passed.
The hybrid vehicle immobilizer system is
automatically set. See “Hybrid vehicle im-
mobilizer system” on page 21.
Approximately 5 hours after the hybrid
system is turned off, you may hear a
sound coming from underneath the lug-
gage compartment for several minutes.
This is normal operation and does not
indicate a malfunction. (See “Leak detec-
tion pump” on page 452.)
NOTICE

The hybrid system cannot be
started when the shift position is in
“N”. Be sure to put it in “P” and
then start the system.
 Do not leave the hybrid system in
“ACC” or “IGON” for a long time.
The 12 volt battery will discharge.
 The hybrid mode in which the bat-
tery is discharged or disconnected
is retained in memory, and that
mode is turned on when power is
applied.
When you leave your vehicle, be sure to
turn the “POWER” switch off and carry the
smart key.
If you get out of your vehicle while carry-
ing a key without turning off the “POWER”
switch and then close the door, a warning
tone sounds inside and beeps sound out-
side.

142
INFORMATION
You can insert a genuine key while in
the “IGON” mode or with the hybrid
system starting. Do not insert any key
other than genuine keys.
25p103a
Without depressing the brake pedal
Each time you press the “POWER”
switch briefly without the brake pedal
depressed, the hybrid system mode
changes in the order of “OFF”, “ACC”,
“IGON” and then back to “OFF”.
1) “ACC” (Green indicator is turned on)
Accessories such as the radio operate.
Pressing the “POWER” switch briefly with-
out depressing the brake pedal in the
“OFF” mode turns on this mode.
The key can be removed at this position.
The hybrid system is automatically turned
off.In the “ACC” mode, pressing the “POW-
ER” switch briefly while depressing the
brake pedal will start the hybrid system.
If you leave your vehicle in the “ACC”
mode for about an hour, the hybrid system
is automatically turned off.
2) “IGON” (Amber indicator is turned
on)
All accessories are operable.
Pressing the “POWER” switch briefly with-
out depressing the brake pedal in the
“ACC” mode turns on this mode.
In the “IG
−ON” mode, pressing the
“POWER” switch briefly while depressing
the brake pedal will start the hybrid sys-
tem. However, if “N” position is selected,
the hybrid system will be turned in the
“OFF” mode.
3) “OFF” (Indicator is turned off)
The hybrid system is off. The key can
be removed at this position.
You may hear a motor sound in the en-
gine compartment for a few seconds after
the system is turned off and about 90
seconds have passed.
Once you remove the key, the hybrid ve-
hicle immobilizer system is automatically
set. See “Hybrid vehicle immobilizer sys-
tem” on page 21.
—Selecting the push button
start system mode
(without smart function)

143
25p104a
With the brake pedal depressed
The hybrid system will start and stop
by pressing the “POWER” switch briefly
with the brake pedal depressed.
You may hear a motor sound in the en-
gine compartment when the brake pedal is
depressed with the hybrid system off.
1) “START” (Amber indicator comes on
for a few seconds)
The hybrid system is ready to operate
and all accessories are operable. (“IG
ON”)
Insert the key and press the “POWER”
switch briefly with the brake pedal de-
pressed.For starting tips, see “How to start the
hybrid system—” on page 350.
If, in an emergency, you must turn the
hybrid system off while the vehicle is
moving, press the “POWER” switch more
than 3 seconds. At this time, the “ACC”
mode and shift position “N” are automati-
cally enabled.
2) “OFF” (Indicator is turned off)
The hybrid system is off. The key can
be removed at this position.
You may hear a motor sound in the en-
gine compartment for a few seconds after
the system is turned off and about 90
seconds have passed.
Once you remove the key, the hybrid ve-
hicle immobilizer system is automatically
set. See “Hybrid vehicle immobilizer sys-
tem” on page 21.
Approximately 5 hours after the hybrid
system is turned off, you may hear a
sound coming from underneath the lug-
gage compartment for several minutes.
This is normal operation and does not
indicate a malfunction. (See “Leak detec-
tion pump” on page 452.)
NOTICE

The hybrid system cannot be
started when the shift position is in
“N”. Be sure to put it in “P” and
then start the system.
 Do not leave the hybrid system in
“ACC” or “IGON” for a long time.
The 12 volt battery will discharge.
 The hybrid mode in which the bat-
tery is discharged or disconnected
is retained in memory, and that
mode is turned on when power is
applied.

146
25p004c
(d) Using engine braking
To use engine braking, shift the shift lever
to “B” position.
During high speed driving, you may feel
that deceleration by engine braking is less
than that of a typical vehicle.
Do not continue normal driving with the
transaxle in “B” for a long time. This may
cause decreased fuel economy. To prevent
this, use “D” for normal driving.
When you shift the transaxle to “B” from
a position other than “D”, an alarm sounds
and the transaxle is automatically shifted
to “N”.
CAUTION
Be careful when downshifting on a
slippery surface. Abrupt shifting
could cause the vehicle to skid or
spin.
(e) Backing up1. Bring the vehicle to a complete stop.
2. With the brake pedal held down with your foot, shift the shift lever to the
“R” position. You will hear beeps while
the transaxle is in “R”.
When you shift the transaxle to “R” while
driving, an alarm sounds and the transaxle
is shifted to “N”.
(f) Parking 1. Bring the vehicle to a complete stop.
2. With the brake pedal pressed down, fully depress the parking brake pedal
to apply the parking brake securely.
3. With the brake pedal pressed down, push the “P” position switch.
If you press the “POWER” switch while
stopping, the transaxle is automatically
shifted to the “P” and the hybrid system
is turned off. If the driver ’s door is opened when the
transaxle is in “N”, “D” or “B”, beep
sounds and a warning message appears
on the multi
−information display to warn
you to shift the transaxle to “P”.
If you push the “P” position switch while
driving, an alarm sounds and the transaxle
is automatically shifted to “N”.
NOTICE
Be sure to put the hybrid transaxle in
“P” when parking. In “N”, the hybrid
battery will not be charged even if the
gasoline engine is running. You can-
not start your vehicle if the transaxle
is left in “N” for a long time because
the hybrid battery will discharge.
When shifting the transaxle from “P” on
the slope, a large parking lock releasing
noise will be generated. However, this
does not indicate a malfunction.

147
(g) Vehicle driving characteristics
Creeping
In order to hold the vehicle properly on an
incline and for better accelerator pedal
operation at starting, your vehicle is de-
signed like a typical automatic transmis-
sion vehicle which tends to move without
depressing the accelerator pedal with the
transaxle in a position other than “P” or
“N”.
With the transaxle in a position other than
“P” or “N”, depress the brake pedal firmly
even when stopped and apply the parking
brake as required.
When moving in a compact area or during
a traffic jam, it is an effective way to
control the speed using only the brake
pedal operation without depressing the ac-
celerator pedal.
Regenerative brake
When the accelerator pedal is released or
the brake pedal is depressed, the electric
motor acts as a generator and converts
kinetic energy to electric energy to provide
deceleration and recover electric energy to
charge the hybrid battery.
At this time, the electric motor running
noise may increase.The operation is the same as a typical
gasoline powered vehicle.
You may experience the following condi-
tion while braking. As they do not indicate
a malfunction, perform braking as usual:
In the “OFF” mode, pressing the
“POWER” switch once or twice will se-
lect “ACC” or “IG
−ON” only if the brake
pedal is not depressed. In this condi-
tion, the brake pedal may move a little.
Hybrid driving
This vehicle runs in combination with the
gasoline engine and electric motor.
If the “READY” light is on, you can start
your vehicle even with the gasoline engine
stopped. (h) If the system malfunctions
In the following conditions, there is some
problem in the system.
The indicator on the “P” position switch
flashes. However, this does not indi-
cate a malfunction unless a warning
message appears in the multi
−informa-
tion display.
All frames of shift position indicators in
the instrument cluster flash.
The parking system error message ap-
pears on the multi −information display.
The instrument cluster and multi −infor-
mation display does not come on when
the “IG −ON” mode is enabled.
In these cases, stop your vehicle in a
safe and level place, apply the parking
brake securely and contact your Toyota
dealer immediately.
(i) When the 12 volt battery is discon- nected
Before you disconnect the 12 volt battery,
confirm the shift position is “P” and apply
the parking brake completely.
After you reconnect the 12 volt battery,
shift the shift lever to “N” and confirm the
shift position is in “N” when the “IG −ON”
mode is enabled.

150
The tire pressure warning system warns
you that the tire inflation pressure is
low.
The tire pressure warning system is not
a substitute for checking normal tire infla-
tion pressure. Check the tire inflation
pressure with a tire pressure gauge regu-
larly.
CAUTION
The warning system may not activate
immediately if bursts or sudden air
leakage should occur.
The tire pressure warning light comes on
when the “POWER” switch is selected in
“IG−ON” mode and goes off after a few
seconds. This means the tire pressure
warning light is operating properly. If the
tire inflation pressure becomes low, the
light comes on again. In this case, adjust-
ing the tire inflation pressure will turn off
the light after a few minutes. If the light
comes on after blinking for 1 minute, the
tire pressure warning system is not work-
ing properly. Indicator
status
MeaningsDo this
ONTire inflation
pressure is
lowAdjust the
tire inflation
pressure
ON after
blinking for
1 minuteTire pres-
sure warn-
ing system
malfunctionHave the
system
checked at
your Toyota
dealer
CAUTION
If the tire pressure warning light
comes on, be sure to observe the
following precautions. Failure to do
so could cause loss of vehicle control
and result in death or serious injury.
Stop your vehicle in a safe place as
soon as possible. Adjust the tire
inflation pressure immediately.
If the tire pressure warning light
comes on even after tire inflation
pressure adjustment, it is probable
that you have a flat tire. Check the
tires. If the tire is flat, change to
the spare tire and have the flat tire
repaired by the nearest Toyota deal-
er.
Tire pressure warning system

152
NOTICE
Do not use liquid sealants for a flat
tire as tire pressure warning valve
and transmitter will be damaged.
 When the tires must be repaired or
replaced, have them repaired or re-
placed by the nearest Toyota dealer
or an authorized tire dealer. The
tire pressure warning valves and
transmitters will be affected by the
installation or removal of tires.
IF THE TIRE PRESSURE WARNING
LIGHT COMES ON AFTER BLINKING
FOR 1 MINUTE...
If the tire pressure warning light comes
on after blinking for 1 minute when the
“POWER” switch is selected in “IGON”
mode, the tire pressure warning system
is not working properly.
The system will be disabled in the follow-
ing conditions:
(When the condition becomes normal, the
system will work properly.)
If tires not equipped with tire pressure
warning valves and transmitters are
used.
If the ID code on the tire pressure warn-
ing valves and transmitters is not regis-
tered on the tire pressure warning ECU.
If electronic devices or facilities using
similar radio wave frequencies are
nearby.
If a radio set at similar frequencies is
in use in the vehicle.
If a window tint that affects the radio
wave signals is installed.
If there is a lot of snow or ice on the
vehicle, in particular around the wheels
or wheel housings.
If non −genuine Toyota wheels are used.
If tire chains are used.
If the tire inflation pressure is more
than 500 kPa (5.1 kgf/cm2 or bar, 73
psi) or higher.
If the tire pressure warning light continues
to come on after blinking for 1 minute
when the “POWER” switch is selected in
“IG −ON” mode, have the system checked
by your Toyota dealer.
Even if you use genuine wheels, the tire
pressure warning system may not work
properly with some types of tires.