Page 460 of 592

4607-3. Do-it-yourself maintenance
UK AURIS_HV_HB_EE (OM12M49E)
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
■ Use a CR2032 lithium battery
● Batteries can be purchased at any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional, local electrical appliance
shops or camera stores.
● Replace only with the same or equivalent type recommended by the manu-
facturer.
● Dispose of used batteries according to local laws.
■ If the key battery is depleted
The following symptoms may occur:
● The smart entry & start system (if equipped), push button start (if equipped)
and wireless remote control will not function properly.
● The operational range will be reduced.
4
WARNING
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.
■ Certification for the lithium battery
CAUTION:
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUC-
TIONS
Page 481 of 592

481
8When trouble arises
UK AURIS_HV_HB_EE (OM12M49E)
8-1. Essential information
Emergency flashers ........... 482
If your vehicle has
to be stopped in an
emergency ....................... 483
8-2. Steps to take in an
emergency
If your vehicle needs
to be towed ...................... 484
If you think something is
wrong ............................... 490
If a warning light turns
on or a warning buzzer
sounds ............................. 491
If a warning message is
displayed ......................... 498
If you have a flat tire
(vehicles with
a spare tire) ..................... 507
If you have a flat tire
(vehicles with an
emergency tire
puncture repair kit)........... 519
If the hybrid system will
not start............................ 534
If the electronic key does
not operate properly ........ 536
If the 12-volt battery is
discharged ....................... 539
If your vehicle
overheats ......................... 544
If the vehicle becomes
stuck ................................ 549
Page 534 of 592

5348-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly. (P. 537)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● There may be a malfunction in the immobilizer system. (P. 8 2 )
● There may be malfunction in the P position control system.*
( P. 215, 498)
● The hybrid system may be malfunctioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. How-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 535)
*: It may not be possible to shift the shift position from P to another position.
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (P. 539)
● The 12-volt battery terminal connections may be loose or corroded.
( P. 434)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on
the situation. Check the follo wing and perform the appropriate
procedure:
The hybrid system will not st art even though the correct starting
procedure is being followed. ( P. 211)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.
Page 536 of 592
5368-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
Use the mechanical key (P.
121) in order to perform the fol-
lowing operations:
Locks all the doors
Unlocks all the doors
If the electronic key does not operate
properly
If communication between the electronic key and vehicle is
interrupted ( P. 137) or the electronic key cannot be used
because the battery is depleted, the smart entry & start system,
push button start and wireless remote control cannot be used. In
such cases, the doors can be opened and the hybrid system can
be started by following the procedure below.
Locking and unlocking the doors
1
2
Page 537 of 592

5378-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
8
When trouble arises
Depress the brake pedal.
Touch the Toyota emblem side
of the electronic key to the
power switch.
When the electronic key is
detected, a buzzer sounds and the
power switch will turn to ON mode.
When the smart entry & start sys-
tem or push button start is deacti-
vated in customization setting, the
power switch will turn to ACCES-
SORY mode.
Firmly depress the brake pedal and check that is shown on
the multi-information display.
Press the power switch.
In the event that the hybrid system still cannot be started, contact any
authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
■ 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. 459)
■ Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered.
Starting the hybrid system
1
2
3
4
Page 538 of 592
5388-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
■ Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 213)
■ When the electronic key does not work properly
● Make sure that the smart entry & start system and push button start has not
been deactivated in the customization setting. If it is off, turn the function on.
(Customizable features P. 566)
● Check if battery-saving mode is set. If it is set, cancel the function.
( P. 136)
3
Page 539 of 592
5398-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
8
When trouble arises
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following the
steps below.
Vehicles with an alarm: Confirm
that the electronic key is being
carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and doors locked. (P. 91)
Open the hood and fuse block
cover.
Open the exclusive jump start-
ing terminal cover.
If the 12-volt battery is discharged
The following procedures may be used to start the hybrid sys-
tem if the 12-volt battery is discharged.
You can also call any authorized Toyota dealer or repairer, or
another duly qualified a nd equipped professional.
1
2
3
Page 542 of 592

5428-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
■ When recharging or replacing the 12-volt battery
● Vehicles with a smart entry & start system: In some cases, it may not be
possible to unlock the doors using the smart entry & start system when the
12-volt battery is discharged. Use the wireless remote control or the
mechanical key to lock or unlock the doors.
● The hybrid system may not start on the first attempt after the 12-volt battery
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 bat-
tery 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 bat-
tery discharged, be especially careful when reconnecting the 12-volt battery.
WARNING
■ 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 other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
● 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.