2014 TOYOTA PRIUS PLUG-IN HYBRID Battery

477
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
4
Maintenance and care
CAUTION
■
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 ventilation.
■ How to charge the 12-volt battery
Only perform a slow charge (5 A or less). The 12-volt battery may explode if
charged at a quicker rate.

478 4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
CAUTION
■Emergency measures regarding electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi-
ate medical attention. If possible, continue to apply water with a sponge or
cloth while traveling to the nearest medical facility.
● If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical
attention immediately.
● If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth-
ing and follow the procedure above if necessary.
● If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention
immediately.
■ When replacing the 12-volt battery
Use a 12-volt battery designed for this vehicle. Failure to do so may ca\
use
gas (hydrogen) to enter the passenger co mpartment, causing a fire or explo-
sion.
For replacement of the 12-volt battery, contact your Toyota dealer.
NOTICE
■ When charging the 12-volt battery
Never charge the 12-volt battery while the hybrid system is operating. Also,
be sure all accessories are turned off.

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4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
Electronic key batter y
Replace the battery with a new one if it is depleted.
■You will need the following items:
●Flathead screwdriver
● Lithium battery CR1632
■ Replacing the battery
Take out the mechanical key.
Remove the cover.
To prevent damage, cover the
tip of the screwdriver with a
rag.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
When installing, reverse the steps listed.
STEP 1
STEP 2
ITO43P194
STEP 3
STEP 4

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4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
4
Maintenance and care
■
Use a CR1632 lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appli-
ance shops or camera stores.
● Replace only with the same or equivalent type recommended by the
manufacturer.
● Dispose of used batteries according to local laws.
■ If the electronic key battery is depleted
The following symptoms may occur:
●The smart key system and wireless remote control will not function prop-
erly.
● The operational range will be reduced.
CAUTION
■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.

504 4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
FUSEAmpereCircuit
43 SPARE 7.5A Spare fuse
44 EFI MAIN 20A Multiport fuel injection system/
sequential multiport fuel injection
system, cooling system, EFI NO.2
45 BATT FAN 20A Battery cooling fan
46 IG2 20A Multiport fuel injection system/
sequential multiport fuel injection
system, MET, IGN, power man-
agement system

When trouble arises5
525
PRIUS PHV_OM_OM47856U_(U)
5-1. Essential informationEmergency flashers ......... 526
If your vehicle needs to be towed ........................ 527
If you think something is wrong ......................... 534
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds ........................... 535
If a warning message is displayed .................... 548
If you have a flat tire......... 569
If the hybrid system will not start .......................... 591
If you lose your keys ........ 593
If the electronic key does not operate properly....... 594
If the 12-volt battery is discharged ..................... 597
If your vehicle overheats ....................... 603
If the vehicle becomes stuck .............................. 608
If your vehicle has to be stopped in an
emergency ..................... 610

526
PRIUS PHV_OM_OM47856U_(U)
5-1. Essential information
Emergency flashers
■Emergency flashers
If the emergency flashers are used for a long time while the hybrid system is
not operating (while the “READY” indi cator is not illuminated), the 12-volt
battery may discharge.
The emergency flashers are used to warn other drivers when the
vehicle has to be stopped in the road due to a breakdown, etc.
Press the switch.
All the turn signal lights will
flash.
To turn them off, press the
switch once again.

5
When trouble arises
527
5-1. Essential information
PRIUS PHV_OM_OM47856U_(U)
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your hybrid transmission.
Contact your Toyota dealer before towing.
● The hybrid system is operating but the vehicle will not move.
● The vehicle makes an abnormal sound.
If there is a malfunction in the P position control system, the smart
key system or the immobilizer system , or if the 12-volt battery is dis-
charged, the vehicle cannot be tow ed with the front wheels on the
ground, as the front wheels may be locked. In this case, transport the
vehicle with both front wheels or all four wheels lifted.
If towing is necessary, we recommend having your vehicle towed by
your Toyota dealer or a commerci al towing service, using a lift-type
truck or flat bed truck.
Use a safety chain system for all to wing, and abide by all state/pro-
vincial and local laws.