2015 TOYOTA PRIUS C key battery

366
PRIUS c_U (OM52E68U)
7-1. Maintenance and care
●Working from top to bottom, liberally apply water to the vehicle
body, wheel wells and underside of the vehicle to remove any dirt
and dust.
● Wash the vehicle body using a sponge or soft cloth, such as a
chamois.
● For hard-to-remove marks, use car wash soap and rinse thoroughly
with water.
● Wipe away any water.
● Wax the vehicle when the waterproof coating deteriorates.
If water does not bead on a clean surface, apply wax when the vehicle
body is cool.
■Automatic car washes
●Fold the mirrors before washing the vehi cle. Start washing from the front of
the vehicle. Make sure to extend the mirrors before driving.
● Brushes used in automatic car washes may scratch the vehicle surface and
harm your vehicle's paint.
● In certain automatic car washes, the rear spoiler may interfere with machine
operation. This may prevent the vehicle from being cleaned properly or
result in damage to the rear spoiler.
■ High pressure car washes
●Do not allow the nozzles of the car wash to come within close proximity of
the windows.
● Before using the car wash, check that the fuel filler door on your vehicle is
closed properly.
■ When using a car wash (vehicles with a smart key system)
If the door handle becomes wet while the electronic key is within the effective
range, the door may lock and unlock repeatedly. In that case, follow the fol-
lowing correction procedures to wash the vehicle:
●Place the electronic key in a location 6 f t. (2 m) or more away from the vehi-
cle. (Take care to ensure that the key is not stolen.)
● Set the electronic key to battery-saving mode to disable the smart key sys-
tem. ( P. 139)
Cleaning and protecting the vehicle exterior
Perform the following to protect the vehicle and maintain it in
prime condition:

3967-3. Do-it-yourself maintenance
PRIUS c_U (OM52E68U)■
When disconnecting the 12- volt battery terminals
Always disconnect the negative (-) terminal first.
■ After recharging/reconnecting the 12-vo lt battery (vehicles with a smart
key system)
● Unlocking the doors using the smart key system may not be possible imme-
diately after reconnecting the 12-volt battery. If this happens, use the wire-
less remote control or the mechanical key to lock/unlock the doors.
● Start the hybrid system with the “POWER” switch in ACCESSORY mode.
The hybrid system may not start with the “POWER” switch turned off. How-
ever, the hybrid system will operate normally from the second attempt.
● The “POWER” switch mode is recorded by the vehicle. If the 12-volt battery
is reconnected, the vehicle will return the “POWER” switch mode to the sta-
tus it was in before the 12-volt battery was disconnected. Make sure to turn
off the power before disconnect the 12-volt battery. Take extra care when
connecting the 12-volt battery if the “POWER” switch mode prior to dis-
charge is unknown.
If the system will not start even after multiple attempts, contact your Toyota
dealer.
WARNING
■ Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric acid and may
produce hydrogen gas which is flammable and explosive. To reduce the risk
of death or serious injury, take the following precautions while working on or
near the 12-volt battery:
●Do not cause sparks by touching the 12-volt battery terminals with tools.
● Do not smoke or light a match near the 12-volt battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the 12-volt battery.
● Keep children away from the 12-volt battery.
■ Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charge the 12-
volt battery in a garage or closed room where there is insufficient ventila-
tion.
■ When disconnecting the 12- volt battery terminals
Always disconnect the negative (-) terminal first. If the positive (+) terminal
is disconnected first and touches a surrounding metal surface it may cause
sparks resulting in a fire or it may result in an electric shock, death or seri-
ous injury.
■ How to recharge the 12-volt battery
Only perform a slow charge (3.5 A or less). The 12-volt battery may explode
if charged at a quicker rate.

4137-3. Do-it-yourself maintenance
7
Maintenance and care
PRIUS c_U (OM52E68U)
●Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR2016 (vehicles without a smart key system), or
CR2032 (vehicles with a smart key system)
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
To prevent the buttons from being
disassembled, face the button sur-
face downward.
Remove the module.
Open the case cover using a
coin protected with tape etc.
and remove the depleted bat-
tery using a small flathead
screwdriver.
Insert a new battery with the “+”
terminal facing up.
Wireless remote control/electronic key batter y
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery (vehicles without a smart key system)
1
2
3

4147-3. Do-it-yourself maintenance
PRIUS c_U (OM52E68U)
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Remove the depleted battery
using a small flathead screw-
driver.
When removing the cover, the
electronic module may stick to the
cover and the battery may not be
visible. In this case, remove the
electronic module in order to
remove the battery.
Insert a new battery with the “+”
terminal facing up.
Replacing the battery (vehicles with a smart key system)
1
2
3

4157-3. Do-it-yourself maintenance
7
Maintenance and care
PRIUS c_U (OM52E68U)
■Use a CR2016 (vehicles without a smart key system) or CR2032 (vehicles
with a smart key system) lithium battery
●Batteries can be purchased at your Toyota dealer, 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 key system (if equipped) and wireless remote control will not
function properly.
● The operational range will be reduced.
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.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other component inside the remote control.
● Do not bend either of the battery terminals.

429
8When trouble arises
PRIUS c_U (OM52E68U)8-1. Essential information
Emergency flashers .......... 430
If your vehicle has to be stopped in
an emergency ................. 431
8-2. Steps to take in an emergency
If your vehicle needs to be towed ......................... 433
If you think something is wrong .......................... 440
If a warning light turns on or a warning buzzer
sounds ............................ 441
If a warning message is displayed ..................... 449
If you have a flat tire.......... 462
If the hybrid system will not start ..................... 473
If the shift lever cannot be shifted from P ............. 475
If the electronic key does not operate properly ........ 476
If the vehicle 12-volt battery is discharged ....... 478
If your vehicle overheats ........................ 483
If the vehicle becomes stuck ............................... 487

4548-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)Indicates that the engine switch is turned to the
“ACC” or “LOCK” position (vehicles without a
smart key system) or the “POWER” switch is
turned to ACCESSORY mode or turned off (vehi-
cles with a smart key system) and the driver’s
door is opened while the lights are turned on
A buzzer also sounds.
 Turn the lights off.
Indicates that the EV drive mode is not avail-
able
*2
The reason the EV drive mode is not available
(the vehicle is idling, battery charge is low,
speed is higher than the EV drive mode operat-
ing speed range, accelerator pedal is
depressed too much) may be displayed.
A buzzer also sounds.
 Use the EV drive mode when it becomes
available.
Indicates that the EV drive mode has been auto-
matically canceled
*2
The reason the EV drive mode is not available
(the battery charge is low, speed is higher than
the EV drive mode speed range, accelerator
pedal is depressed too much) may be dis-
played.
A buzzer also sounds.
 Drive the vehicle for a while.
Indicates that the TRAC (Traction Control) sys-
tem has been deactivated
 Turn the TRAC on. ( P. 233)
Indicates that the accelerator and brake pedals
are being depressed simultaneously, and the
Brake Override System is operating. ( P. 167)
 Release the accelerator or brake pedal.
Warning messageDetails/Actions
(Flashes)
(Flashes 3
times)
(Flashes)

4598-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U (OM52E68U)
Once
• The electronic key could notbe detected when the
“POWER” switch was
pressed after the doors were
unlocked with the mechanical
key.
• The electronic key could not be detected two consecutive
times when the “POWER”
switch was pressed.
 Touch the electronic key to
the “POWER” switch while
depressing the brake
pedal.
Once
An attempt was made to start
the hybrid system with the shift
lever in a position other than P.
Shift the shift lever to P
and start the hybrid sys-
tem.

Power was turned off due to the
automatic power off function.
Next time when starting
the hybrid system,
increase the engine speed
slightly and maintain that
level for approximately 5
minutes to recharge the
12-volt-battery.
Once
The electronic key has a low
battery.
Replace the electronic key
battery. ( P. 413)
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)