Page 450 of 548
450 5-2. Steps to take in an emergency
Once(Flashes)The driver's
door was
opened and
closed with the
“POWER”
switch turned off
and then the
“POWER”
switch was put
in ACCES-
SORY mode
twice without
the hybrid sys-
tem being
started.
Press the
“POWER”
switch while
depressing the
brake pedal.
During a hybrid
system starting
procedure in the
event that the
electronic key
was not func-
tioning properly
( P. 468), the
“POWER”
switch was
touched with
the electronic
key. Press the
“POWER”
switch within 10
seconds of the
buzzer sound-
ing.
Once
(Flashes)The steering
lock could not
be released
within 3 sec-
onds of the
“POWER”
switch being
pressed. Press the
“POWER”
switch while
depressing the
brake pedal and
moving the
steering wheel
left and right.
Interior
buzzerExterior
buzzerWarning messageDetailsCorrection
procedure
Page 464 of 548

464
5-2. Steps to take in an emergency
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. 161)
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly. ( P. 469)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● There may be a malfunction in the immobilizer system.
( P. 1 1 0 )
● There may be a malfunction in the steering lock system.
● The hybrid system may be malfun ctioning due to an electrical
problem such as an open circuit or a blown fuse. However,
depending on the type of malf unction, an interim measure is
available to start the hybrid system. ( P. 465)
■ 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. 471)
● The 12-volt battery terminal c onnections may be loose or cor-
roded.
Page 467 of 548
5
When trouble arises
467
5-2. Steps to take in an emergency
If you lose your keys
New genuine Toyota keys can be made by your Toyota dealer using
the other key and the key number stamped on your key number
plate.
Page 468 of 548
468
5-2. Steps to take in an emergency
If the electronic key does not operate properly
Locking and unlocking the doors and key linked functions
Use the mechanical key
( P. 52) in order to perform the
following operations (driver’s
door only):
Locks all doors
Closes the windows and moon
roof (turn and hold)
*
Unlocks all doors
Turning the key rearward unlocks
the driver’s door. Turning the key
once again unlocks the other
doors.
Opens the windows and moon
roof (turn and hold)
*
*: This setting must be custom-ized at your Toyota dealer.
If communication between the electronic key and vehicle is inter-
rupted ( P. 62) 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 and trunk can be
opened and the hybrid system can be started by following the proce-
dure below.
Page 469 of 548
5
When trouble arises
469
5-2. Steps to take in an emergency
Starting the hybrid system
Ensure that the shift lever is in P and depress the brake pedal. Touch the Toyota emblem side of
the electronic key to the
“POWER” switch.
The “POWER” switch will turn to
ON mode.
When the smart key system is
deactivated in customization set-
ting, the “POWER” switch will turn
to ACCESSORY mode.
Firmly depress the brake ped al and check that is dis-
played on the multi-information display.
Press the “POWER” switch.
In the event that the “POWER” swit ch still cannot be operated, con-
tact your Toyota dealer.
STEP1
STEP2
STEP3
STEP4
Page 470 of 548

470 5-2. Steps to take in an emergency
■Stopping the hybrid system
Shift the shift lever 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. 392)
■ Changing “POWER” switch modes
Release the brake pedal and press the “POWER” switch in above.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 163)
■ If the doors cannot be locked or unlocked by the smart key system
Lock and unlock the doors by the mechanical key or wireless remote contr\
ol.
■ When the electronic key does not work properly
●Make sure that the smart key system has not been deactivated in the
customization setting. If it is off, turn the function on.
(Customizable features P. 510)
● Check if battery-saving mode is set. If it is set, cancel the function.
( P. 6 1 )
STEP3
Page 472 of 548

472 5-2. Steps to take in an emergency
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■ To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is
off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic.
■ When the 12-volt battery is removed or discharged
●The hybrid system may not start. ( P. 374)
● Make sure that the key is not inside the vehicle when recharging or
replacing the 12-volt battery. The key may be locked in the vehicle if the
alarm is activated. ( P. 113)
Start the engine of the seco nd vehicle. Increase the gaso-
line engine speed slightly and maintain at that level for
approximately 5 minutes to recharge the 12-volt battery of
your vehicle.
Open and close any of the doors with the “POWER” switch
OFF.
Maintain the engine speed of the second vehicle and turn
the “POWER” switch to ON mode, then start the hybrid sys-
tem.
Make sure the “READY” indicator comes on. If the indicator
does not come on, contact your Toyota dealer.
Once the hybrid system has started, remove the jumper
cables in the exact reverse or der from which they were con-
nected.
Once the hybrid system starts, have the vehicle checked at your
Toyota dealer as soon as possible.STEP3
STEP4
STEP5
STEP6
STEP7
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5
When trouble arises
473
5-2. Steps to take in an emergency
■
Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even
when the vehicle is not in use, due to natural discharge and the draining
effects of certain electrical appliances. If the vehicle is left for a long time, the
12-volt battery may discharge, and the hybrid system may be unable to start.
(The 12-volt battery recharges automatically while the hybrid system is oper-
ating.)
■ Precautions when the 12-volt battery is discharged
●In some cases, it may not be possible to unlock the doors using the smart
key system when the battery is discharged. Use the wireless remote con-
trol or the mechanical key to lock or unlock the doors.
● The hybrid system may not start on the first attempt after the 12-volt bat-
tery has recharged but will start normally after the second attempt. This is
not a malfunction.
● The “POWER” switch mode is memorized by the vehicle. When the 12-
volt battery is reconnected, the system will return to the mode it was in
before the 12-volt battery was discharged. Before disconnecting the 12-
volt battery, turn the “POWER” switch off.
If you are unsure what mode the “POWER” switch was in before the 12-
volt battery discharged, be especially careful when reconnecting the 12-
volt battery.
CAUTION
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the 12-volt battery.