Page 461 of 568
5
When trouble arises
461
5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
Interior
buzzerExterior buzzerWarning lightDetailsCorrection procedure
Contin- uous
An attempt was
made to exit the
vehicle with the
electronic key and
lock the doors
without first turn-
ing the “POWER”
switch off.
Turn the “POWER”
switch off and lock the
doors again.
Contin-uousContin- uous
The electronic key
was carried out-
side the vehicle
and the driver’s
door was opened
and closed while
any shift position
other than P was
selected without
turning off the
“POWER” switch.
• Shift the shift position to P.
• Bring the electronic key back into the vehi-
cle.
Page 476 of 568

476
5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the
situation. Check the following a nd perform the appropriate proce-
dure:
■ The hybrid system will not start even though the correct
starting procedure is being followed ( P. 175)
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly.
*
( P. 479)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 3 8 )
● There may be a malfunction in the immobilizer system.
*
( P. 1 1 9 )
● There may be a malfunction in the P position control system.
*
( P. 180, 447, 448)
*: It may not be possible to shift the shift position from P to other posi-
tion.
■ The interior lights and headlights are dim, or the horn does
not sound or sounds at a low volume
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 481)
● The 12-volt battery terminal c onnections may be loose or cor-
roded.
Page 478 of 568
478
5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
If you lose your keys
New genuine keys can be made by your Toyota dealer using the
other key and the key number stamped on your key number plate.
Page 479 of 568
5
When trouble arises
479
5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
If the electronic key does not operate properly
Locking and unlocking the doorsUse the mechanical key (P. 54)
in order to perform the following
operations:
Locks all the doors
Unlocks the door
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 3 seconds
unlocks the other doors.
If communication between the electronic key and vehicle is inter-
rupted ( P. 65) or the electronic key cannot be used because the
battery is depleted, the smart key system and wireless remote con-
trol cannot be used. In such cases, the doors can be opened and the
hybrid system can be started by following the procedure below.
Page 480 of 568

480 5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
Starting the hybrid systemDepress the brake pedal. Touch the Toyota emblem side of
the electronic key to the
“POWER” switch.
If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm
will sound to indicate that the start
function cannot detect the elec-
tronic key.
Press the “POWER” switch within 10 seconds of the buzzer
sounding, keeping the brake pedal depressed.
In the event that the hybrid system still cannot be operated, contact
your Toyota dealer.
STEP 1
STEP 2
■ Stopping the hybrid system
Set the parking brake, shift the shift position to P and press the “POWER”
switch as you normally do when stopping the hybrid system.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(P. 407)
■ Changing “POWER” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and
press the “POWER” switch.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 177)
STEP 3
Page 526 of 568
526 6-2. Customization
PRIUS v_OM_OM47840U_(U)
ItemFunctionDefault settingCustom- ized
setting
Smart key
system
( P. 57) Smart key
system
ON OFF O O O
Select doors to
unlock Driver’s
door All doors – O O
Wireless
remote
control
( P. 72) Wireless remote
control
ON OFF – – O
Unlocking
operation Driver’s
door
unlocked
in 1-step,
all doors
unlocked
in 2-stepAll doors
unlocked in 1-step OOO
Panic function ON OFF – – O
Buzzer sounds
when pushing with any
door not closed ON OFF – – O
Smart key
system
( P. 57) and
wireless
remote
control
( P. 72) Operation
signals (Emer-
gency flashers)
ON OFF – O O
Operation
signals (Buzz-
ers) Level 7Level 1 to 6
OOO
OFF
Time elapsed
before auto-
matic door lock
function is acti-
vated if door is
not opened after
being unlocked 60 seconds
OFF
–OO
30 seconds
120
seconds
Page 527 of 568
527
6-2. Customization
6
Vehicle specifications
PRIUS v_OM_OM47840U_(U)
ItemFunctionDefault set-
tingCustom-ized
setting
Door lock
( P. 74,
479) Unlocking using
a key
Driver’s
door
unlocked in 1-step, all doors
unlocked in 2-step All doors
unlocked in 1-step –OO
Speed-detecting
automatic door
lock function OFF ON OOO
Shifting the shift
position to any
position other
than P locks all
doors ON OFF OOO
Shifting the shift
position to P
unlocks all doors ON OFF OOO
Opening driver’s
door unlocks all
doors OFF ON – O O
Automatic
light control
system
( P. 213) Light sensor
sensitivity
Level 3Levels 1 to
5 OOO
Time elapsed
before head-
lights automati-
cally turn off after
doors are closed 30 seconds
0 seconds
OOO
60 seconds
90 seconds
Page 528 of 568
528 6-2. Customization
PRIUS v_OM_OM47840U_(U)
ItemFunctionDefault set-tingCustom-ized
setting
Illumination
( P. 299) Time elapsed
before lights turn
off
15 secondsOFF
–OO
7.5
seconds
30 seconds
Operation when
the doors are
unlocked ON OFF – – O
Operation after
the “POWER”
switch turned
OFF ON OFF – – O
Operation when
you approach
the vehicle with
the electric key
on your person
(When the per-
sonal/interior
light main switch
is door position) ON OFF – – O
Foot lights ON OFF – – O
Foot lights oper-
ation when the
vehicle is run-
ning ON OFF – – O