2014 TOYOTA PRIUS PLUG-IN HYBRID 12 volt battery

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PRIUS PHV_OM_OM47856U_(U)
4-1. Maintenance and careCleaning and protecting the vehicle exterior............ 426
Cleaning and protecting the vehicle interior............. 430
4-2. Maintenance Maintenance requirements ..................... 433
General maintenance.......... 436
Emission inspection and maintenance (I/M)
programs........................... 441
4-3. Do-it-yourself maintenance Do-it-yourself service precautions ....................... 442
Hood ................................... 445
Positioning a floor jack ........ 448
Replacing the tire ................ 451
Engine compartment ........... 462
12-volt battery ..................... 474
Tires .................................... 479
Tire inflation pressure ......... 489
Wheels ................................ 493
Electronic key battery.......... 496
Checking and replacing fuses.................. 498
Light bulbs........................... 510 5-1. Essential information
Emergency 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
4Maintenance and care5When trouble arises

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PRIUS PHV_OM_OM47856U_(U)
CAUTION
■Hybrid battery (traction battery)
Never resell, hand over or modify the hybrid battery (traction battery). To pre-
vent accidents, hybrid batteries (traction batteries) that have been removed
from a disposed vehicle are collected through Toyota dealers. Do not dis-
pose of the battery yourself.
Unless the battery is properly collected, the following may occur, resulting in
death or serious injury:
• The hybrid battery (traction battery) may be illegally disposed of or
dumped, and someone may touch a high voltage part, resulting in an
electric shock.
• The hybrid battery (traction battery) is intended to be used exclusively with your hybrid vehicle. If the hybrid battery (traction battery) is used
outside of your vehicle or modified in any way, accidents such as electric
shock, heat generation, smoke generation, an explosion and electrolyte
leakage may occur.
When reselling or handing over your vehicle, the possibility of an accident is
extremely high because the person receiving the vehicle may not be aware
of these dangers.
■ Disposal of the hybrid battery (traction battery)
If your vehicle is disposed of without the hybrid battery (traction battery) hav-
ing been removed, there is a danger of serious electric shock if high voltage
parts, cables and their connectors are touched. In the event that your vehicle
must be disposed of, the hybrid battery (traction battery) must be disposed
of by your Toyota dealer or a qualified service shop. If the hybrid battery
(traction battery) is not disposed of properly, it may cause electric shock that
can result in death or serious injury.

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1-1. Plug-in hybrid system
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Before driving
PRIUS PHV_OM_OM47856U_(U)
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When continually using EV mode only
After driving for approximately 124 miles (200 km) with the gasoline engine
off, the gasoline engine may start for a short amount of time in order to pro-
tect the system.
■ Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop
automatically in the following conditions
*:
● During gasoline engine warm-up
● When the temperature of the hybrid battery (traction battery) is high or
low
● During hybrid battery (traction battery) charging
● When the heater is switched on
*: Depending on the circumstances, the gasoline engine may also not stop
automatically in situations other than those above.
■ If the vehicle is not used for a long time
The 12-volt battery may discharge. In this event, charge the 12-volt battery.
(P. 597)
In order to prevent the hybrid battery (traction battery) from becoming
extremely low in charge, start the hybrid system at least once every 2 or 3
months, and turn the “POWER” switch off after the gasoline engine has
stopped automatically. (If the gasoline engine does not start up even after
approximately 10 seconds have passed since the “READY” indicator came
on, the “POWER” switch can be turned to OFF without any further action.)

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1-1. Plug-in hybrid system
PRIUS PHV_OM_OM47856U_(U)
Plug-in hybrid system precautions
Take care when handling the hybrid system, as it contains a high
voltage system (about 650V at maximum) as well as parts that
become extremely hot when the hy brid system is operating. Obey
the caution labels attached to the vehicle.
Service plug
Caution label
Power control unit and DC/
DC converter
Electric motor (traction
motor)Air conditioning compressor
High voltage cables (orange)
Battery charger
Hybrid battery (traction bat-
tery)
Charging inlet

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1-1. Plug-in hybrid system
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Before driving
PRIUS PHV_OM_OM47856U_(U)
Hybrid battery (traction battery) air vents
There are air intake vents on the
side of the rear right seatback
and on the front corner of the left
rear seat cushion for the purpose
of cooling the hybrid battery
(traction battery). If the vents
become blocked, the hybrid bat-
tery (traction battery) may over-
heat, leading to a reduction in
hybrid battery (traction battery)
output.
Emergency shut off system When a certain level of impact is detected by the impact sensor, the
emergency shut off syst em blocks off the high voltage current and
stops the fuel pump to minimize t he risk of electrocution and fuel
leakage. If the emergency shut off sy stem activates, your vehicle will
not restart. To restart the hybrid system, contact your Toyota dealer.

46 1-1. Plug-in hybrid system
PRIUS PHV_OM_OM47856U_(U)
Hybrid warning messageA message is automatically displayed when a malfunction occurs in
the hybrid system or an impr oper operation is attempted.
If a warning message is shown
on the multi-information display,
read the message and follow the
instructions. ( P. 548)
■If a warning light comes on, a warn ing message is displayed or the 12-
volt battery is disconnected
The hybrid system may not start. In that case, try to start the system again. If
the “READY” indicator does not come on, contact your Toyota dealer.
■ Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be
started, refuel the vehicle with at least enough gasoline to make the low fuel
level warning light ( P. 539) go off. If there is only a small amount of fuel,
the hybrid system may not be able to start. (The minimum amount of fuel to
add to make the low fuel level warning light go out is about 1.9 gal. [7.1 L,
1.6 Imp.gal.], when the vehicle is on a level surface. This value may vary
when the vehicle is on a slope.)

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1-1. Plug-in hybrid system
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Before driving
PRIUS PHV_OM_OM47856U_(U)
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Electromagnetic waves
●High voltage parts and cables on the hybrid vehicles incorporate electro-
magnetic shielding, and therefore emit approximately the same amount
of electromagnetic waves as conventional gasoline powered vehicles or
home electronic appliances.
● Your vehicle may cause sound interference in some third party-produced
radio parts.
■ Hybrid battery (traction battery) (lithium-ion battery)
The hybrid battery (traction battery) has a limited service life.
The hybrid battery (traction battery) capacity (the ability to hold a charge)
reduces with time and use in the same way as other rechargeable batteries.
The extent at which capacity reduces changes drastically depending on the
environment (ambient temperature, etc.) and usage conditions, such as \
how
the vehicle is driven and how the hybrid battery (traction battery) is charged.
This is a natural characteristic of lithium-ion batteries, and is not a malfunc-
tion. Also, even though the distance that can be driven in EV mode
decreases when the hybrid battery (traction battery) capacity reduces, vehi-
cle performance does not significantly become worse.
In order to reduce the possibility of the capacity reducing, follow the direc-
tions listed on P. 97, “Capacity reduction of the hybrid battery (traction bat-
tery)”.

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1-1. Plug-in hybrid system
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Before driving
PRIUS PHV_OM_OM47856U_(U)
CAUTION
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Road accident cautions
If your vehicle is involved in an accident, observe the following precautions
to reduce the risk of death or serious injury:
●Stop the vehicle in a safe place to prevent subsequent accidents.
While depressing the brake pedal, apply the parking brake, shift the shift
position to P and turn the hybrid system off. Then, slowly release the brake
pedal.
● Do not touch the high voltage parts, cables and connectors.
● If electric wires are exposed inside or outside your vehicle, an electric
shock may occur. Never touch exposed electric wires.
● Do not touch the battery if liquid is leaking from or adhering to it.
If electrolyte (carbonic-based organic electrolyte) from the hybrid battery
(traction battery) comes into contact with the eyes or skin, it could cause
blindness or skin wounds. In the unlikely event that it comes into contact
with the eyes or skin, wash it off immediately with a large amount of water,
and seek immediate medical attention.
● If electrolyte is leaking from the hybrid battery (traction battery), do not
approach the vehicle.
Even in the unlikely event that the hybrid battery (traction battery) is dam-
aged, the internal construction of the battery will prevent a large amount of
electrolyte from leaking out. However, any electrolyte that does leak out
will give off an acidic vapor. This vapor is an irritant to skin and eyes and
could cause acute poisoning if inhaled.
● Do not bring burning or high-temperat ure items close to the electrolyte.
The electrolyte may ignite and cause a fire.
● If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible.
Never use a fire extinguisher that is not meant for electric fires. Using even
a small amount of water may be dangerous.