2018 TOYOTA PRIUS PLUG-IN HYBRID battery replacement

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PRIUS PHV_OM_OM47C99E_(EE)
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7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ..........572
Cleaning and protecting
the vehicle interior ...........577
7-2. Maintenance
Maintenance
requirements....................583
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ......................586
Hood ..................................589
Positioning a floor jack .......591
Engine compartment..........592
Tires ...................................606
Tire inflation pressure ........622
Wheels ...............................624
Replacing the tire ...............627
Air conditioning filter ..........639
Wiper rubber
replacement .....................643
Electronic key battery ........646
Checking and replacing
fuses ................................649
Light bulbs .........................653
8-1. Essential information
Emergency flashers .......... 662
If your vehicle has to
be stopped in an
emergency ...................... 663
8-2. Steps to take in an
emergency
If your vehicle needs
to be towed ..................... 664
If you think something is
wrong .............................. 670
If a warning light turns on
or a warning buzzer
sounds ............................ 671
If a warning message is
displayed ......................... 680
If you have a flat tire .......... 688
If the hybrid system will
not start ........................... 706
If the electronic key does
not operate properly ........ 708
If the 12-volt battery is
discharged ...................... 712
If your vehicle
overheats ........................ 718
If the vehicle becomes
stuck................................ 723
7Maintenance and care8When trouble arises

1152-1. Plug-in hybrid system
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Plug-in hybrid system
PRIUS PHV_OM_OM47C99E_(EE)
NOTICE
■Hybrid battery (traction battery) air vents
● Make sure not to block the air intake vent with anything, such as a seat
cover, plastic cover, or luggage. The hybrid battery (traction battery) may
overheat and be damaged.
● When dust etc. has accumulated in the air intake vent, clean it with a vac-
uum cleaner to prevent the vent from clogging.
● Do not wet or allow foreign substances to enter the air vents as this may
cause a short circuit and damage the hybrid battery (traction battery).
● Do not carry large amounts of water such as water cooler bottles in the
vehicle. If water spills onto the hybrid battery (traction battery), the battery
may be damaged. Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
● A filter is installed to the air intake vent. When the filter remains noticeably
dirty even after cleaning the air intake vent, filter cleaning or replacement
is recommended. When cleaning the filter, refer to P. 578.
■ Notice about fuel
● For plug-in hybrid vehicles, fuel may remain in the tank for a long time and
undergo changes in quality depending on the how the vehicle is used.
Refuel at least 20 L (5.3 gal., 4.4 Imp.gal.) of fuel every 12 months (refuel
a total of at least 20 L [5.3 gal., 4.4 Imp.gal.] over a 12-month period), as
this may affect components of the fuel system or the gasoline engine.
● If the vehicle has not been refueled for a certain amount of time and it is
possible that the quality of the fuel remaining in the tank has changed, “No
new fuel has been added recently. Please refuel” is displayed on the multi-
information display when the power switch is turned to ON mode. If the
message is displayed, refuel the vehicle immediately.

2053. Instrument cluster
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Instrument cluster
PRIUS PHV_OM_OM47C99E_(EE)
■The meters and display illuminate when
The power switch is in ON mode.
■Adjusting the instrument cluster brightness (P. 200)
●The brightness levels that can be selected differ depending on whether the
tail lights are on and surrounding brightness levels, as shown in the table
below.
*: 22 levels of the brightness are displayed on the setting screen. However,
the brightness setting will be the brightest when other than 1st level (the
darkest) is selected. If other than 1st or 22nd level is selected, when the
tail lights are turned on in a dark place, the instrument cluster brightness
setting will be the selected level.
●If the taillights are illuminated in a dark environment, the instrument cluster
light dims. However, when the brightness of the instrument cluster is set to
minimum or maximum (1st or 22nd level of the instrument cluster bright-
ness), even if the taillights are illuminated, the instrument cluster light will
not dim.
■When disconnecting and reconnecting 12-volt battery terminals
The settings of the clock will be reset.
■Calendar setting
●Until the calendar setting is completed, the check screen is displayed every
time the power switch is turned to ON mode.
●After the calendar information is set, it can be changed in the “Meter Custo-
mize” settings. (P. 253)
The tail lights are offThe tail lights are on
In a bright place2 levels*2 levels*
In a dark place22 levels
If calendar recording is interrupted due to
replacement of the 12-volt battery or 12-
volt battery discharge, etc., when the
power switch is turned to ON mode after
maintenance, the calendar setting check
screen is automatically displayed on the
multi-information display.
●If date information is not set, the electric-
ity and fuel consumption record cannot
be stored correctly. Also, the charge
timer function can not operate properly.
When the calendar setting check screen
is displayed, make sure to complete the
calendar setting. (P. 250)

2744-1. Key information
PRIUS PHV_OM_OM47C99E_(EE)■Electronic key battery depletion
●The standard battery life is 1 to 2 years.
●If the battery becomes low, an alarm will sound in the cabin and a message
will be displayed on the multi-information display when the hybrid system
stops.
●As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indi-
cate that the electronic key battery may be depleted. Replace the battery
when necessary. (P. 646)
• The smart entry & start system or the wireless remote control does not
operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
You can replace the battery by yourself (P. 646). However, as there is a
danger that the electronic key may be damaged, it is recommended that
replacement is carried out by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
●To avoid serious deterioration, do not leave the electronic key within 1 m
(3 ft.) of the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Table lamps
• Induction cookers

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7Maintenance and care
PRIUS PHV_OM_OM47C99E_(EE)7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .......... 572
Cleaning and protecting
the vehicle interior ........... 577
7-2. Maintenance
Maintenance
requirements.................... 583
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ...................... 586
Hood .................................. 589
Positioning a floor jack ....... 591
Engine compartment.......... 592
Tires ................................... 606
Tire inflation pressure ........ 622
Wheels ............................... 624
Replacing the tire ............... 627
Air conditioning filter .......... 639
Wiper rubber
replacement ..................... 643
Electronic key battery ........ 646
Checking and replacing
fuses ................................ 649
Light bulbs ......................... 653

6417-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47C99E_(EE)
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Maintenance and care
Remove the air conditioning fil-
ter from the filter case and
replace it with a new one.
The “ UP” marks shown on the fil-
ter should be pointing up.
When installing, reverse the steps listed.
■ Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to the
“Toyota Service Booklet” or “Toyota Warranty Booklet”.)
■ If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
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WARNING
■ When replacing the air conditioning filter
Observe the following precautions. Failure to do so may result in the air
conditioning system operating during t he procedure, possibly resulting in
injury.
● Check that the charging connector is not connected
The air conditioning may operate due to the “Climate Prep” ( P. 171) or
“Traction Battery Cooler” ( P. 150) setting. (if equipped)
● Do not use the Remote Air Conditioning System
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7339-1. Specifications
PRIUS PHV_OM_OM47C99E_(EE)
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Vehicle specifications
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
Electrical system (12-volt battery)
Specific gravity
reading at 20 C (68F):
1.25 or higher
If the specific gravity is lower than the
standard value, charge the 12-volt bat-
tery.
Charging ratesQuick charge15 A max.
Slow charge5 A max.
Transmission
Fluid capacity*3.7 L (3.9 qt., 3.3 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■ Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied
by vibration, and ultimately damage the transmission of your vehicle.

770Alphabetical index
PRIUS PHV_OM_OM47C99E_(EE)
Warning lights .......................... 208
ABS ....................................... 672
Brake Override System ......... 676
Brake system ........................ 671
Charging system ................... 671
Drive-Start Control ................ 676
Driver’s seat belt reminder .... 674
Electronic engine control
system ................................ 672
Electric power steering.......... 672
Front passenger’s seat belt
reminder ............................. 674
High coolant temperature...... 673
ICS OFF indicator ................. 674
Intelligent Clearance
Sonar .................................. 676
LDA (Lane Departure Alert
with steering control)
system ................................ 416
Low engine oil pressure ........ 672
Low fuel level ........................ 674
Malfunction indicator lamp .... 672
Master warning light .............. 674
Open door ............................. 674
PCS....................................... 673
Rear passengers’ seat belt
reminder ............................. 674
Seat belt reminder light ......... 674
Slip indicator ......................... 673
SRS....................................... 672
Tire pressure ......................... 675
Warning messages .................. 680Warning reflector storage
space ...................................... 558
Washer...................................... 376
Checking ............................... 604
Preparing and checking
before winter....................... 525
Switch ................................... 376
Washing and waxing ............... 572
Water-repellent coating........... 573
Wheels ...................................... 624
Replacing wheels.................. 627
Size ....................................... 734
Window glasses....................... 330
Window lock switch ................ 330
Windows ................................... 330
Power windows ..................... 330
Rear window defogger .......... 535
Washer ................................. 376
Windshield wipers ................... 376
Handling the wiper arms ....... 576
Rain-sensing windshield
wipers ................................. 376
Replacing the wiper rubber ... 643
Winter driving tips ................... 525
Wiper rubber replacement ...... 643
Wireless charger...................... 563
Wireless remote control
key .......................................... 272
Battery-Saving Function ....... 289
Locking/Unlocking................. 272
Remote Air Conditioning
System ............................... 542
Replacing the battery ............ 646