2022 TOYOTA PRIUS PLUG-IN HYBRID key battery

562
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
6-4. Using the other interior features
NOTICE
QConditions in which the function may not operate correctly
In the following conditions, it may not operate correctly
O The portable device is fully charged
O There is foreign matter between the charge area and portable device
O The temperature of the portable device gets higher from charging
O The charging surface of the portable device is facing up
O The placement of the portable device is out of alignment with the charge
area
O Near a TV tower, electric power plant, gas station, radio station, large dis-
play, airport or other facility that generates strong radio waves or electrical
noise
O When the electronic key is in contact with, or is covered by the following
metallic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
O When other wireless keys (that emit radio waves) are being used nearby
In addition, excluding the above-mentioned, when the charger do es not per-
form normally or the operation indicator light is flashing cont inuously, it is
considered that the wireless charger is malfunctioning. Contact any autho-
rized Toyota retailer or Toyota authorized repairer, or any rel iable repairer.
Q To prevent failure or damage to data
O Do not bring magnetic cards, such as credit cards, or magnetic recording
media, etc., close to the charger while charging, otherwise, da ta may dis-
appear under the influence of magnetism. Also, do not bring pre cision
instruments such as wrist watches, etc., close to the charger, as such
objects may break.
O Do not leave portable devices in the cabin. The temperature inside the
cabin may become high, when under the sun, and cause damage to the
device.
Q To prevent 12-volt battery discharge
When the hybrid system is stopped, do not use the wireless char ger for a
long time.

565
7Maintenance and care
Prius Plug-in Hybrid_OM_OM47E75E_(EE)7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .......... 566
Cleaning and protecting
the vehicle interior ........... 572
7-2. Maintenance
Maintenance
requirements.................... 578
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ...................... 581
Hood .................................. 584
Positioning a floor jack ....... 586
Engine compartment.......... 587
Tires ................................... 600
Tire inflation pressure ........ 608
Wheels ............................... 610
Replacing the tire ............... 612
Air conditioning filter .......... 624
Wiper insert
replacement ..................... 628
Electronic key battery ........ 631
Checking and replacing
fuses ................................ 634
Light bulbs ......................... 638

5677-1. Maintenance and care
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
7
Maintenance and care
QNote for a smart entry & start 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:
OPlace the key in a position 2 m (6 ft.) or more separate from the vehicle
while the vehicle is being washed. (Take care to ensure that the key is not
stolen.)
OSet the electronic key to battery-saving mode to disable the smart entry &
start system. (P. 285)
QWheels and wheel ornaments
ORemove any dirt immediately by using a neutral detergent.
OWash detergent off with water immediately after use.
OTo protect the paint from damage, make sure to observe the following pre-
cautions.
• Do not use acidic, alkaline or abrasive detergent
• Do not use hard brushes
• Do not use detergent on the wheels when they are hot, such as after driv-
ing or parking in hot weather
QBrake pads and calipers
Rust may form if the vehicle is parked with wet brake pads or disc rotors,
causing them to stick. Before parking the vehicle after it is washed, drive
slowly and apply the brakes several times to dry the parts.
QBumpers
Do not scrub with abrasive cleaners.
QFront side windows water-repellent coating
The following precautions can extend the effectiveness of the water-repellent
coating.
ORemove any dirt, etc. from the front side windows regularly.
ODo not allow dirt and dust to accumulate on the windows for a long period.
Clean the windows with a soft, damp cloth as soon as possible.
ODo not use wax or glass cleaners that contain abrasives when cleaning the
windows.
ODo not use any metallic objects to remove condensation build up.
QPlated portions
If dirt cannot be removed, clean the parts as follows:
OUse a soft cloth dampened with an approximately 5% solution of neutral
detergent and water to clean the dirt off.
OWipe the surface with a dry, soft cloth to remove any remaining moisture.
OTo remove oily deposits, use alcohol wet wipes or a similar product.

5957-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
7
Maintenance and care
QWhen opening the cover of the positive (+) battery terminal
Q Before recharging
When recharging, the 12-volt battery produces hydrogen gas whic h is flam-
mable and explosive. Therefore, observe the following precautio ns before
recharging:
O If recharging with the 12-volt battery installed on the vehicle, be sure to dis-
connect the ground cable.
O Make sure the power switch on the charger is off when connecting and dis-
connecting the charger cables to the 12-volt battery.
Q After recharging/reconnecting the 12-volt battery
O Unlocking the doors using the smart entry & start system may not be possi-
ble immediately after reconnecting the 12-volt battery. If this happens, use
the wireless remote control or the mechanical key to lock/unloc k the doors.
O Start the hybrid system with the power switch in ACCESSORY mode. The
hybrid system may not start with the power switch turned off. H owever, the
hybrid system will operate normally from the second attempt.
O 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 t he status it
was in before the 12-volt battery was disconnected. Make sure t o turn off
the power switch before disconnect the 12-volt battery. Take ex tra care
when connecting the 12-volt battery if the power switch mode pr ior to dis-
charge is unknown.
If the system will not start even after multiple attempts at al l methods above,
contact any authorized Toyota retailer or Toyota authorized rep airer, or any
reliable repairer.
While pushing the portion shown in the
illustration from both sides, lift the end of
the cover up.

6317-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
7
Maintenance and care
Electronic key batter y
OFlathead screwdriver
OLithium battery CR2032
Release the lock and take out
the mechanical key.
Remove the cover.
Use a screwdriver of an appropri-
ate size. Forcedly prying may
cause the cover damaged.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2

6327-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
Remove the depleted battery.
When removing the cover, if the
battery cannot be seen due to the
electronic key module attaching to
the upper cover, remove the elec-
tronic key module from the cover
so that the battery is visible as
shown in the illustration.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” terminal facing up.
When installing, reverse the steps listed.
QUse a CR2032 lithium battery
OBatteries can be purchased at any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer, local electrical appliance shops
or camera stores.
OReplace only with the same or equivalent type recommended by the manu-
facturer.
ODispose of used batteries according to the local laws.
QIf the electronic key battery is depleted
The following symptoms may occur:
OThe smart entry & start system and wireless remote control will not function
properly.
OThe operational range will be reduced.
3
4

6337-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
7
Maintenance and care
WARNING
QBattery precautions
Observe the following precautions.
Failure to do so may result in death or serious injury.
O Do not swallow the battery. Doing so may cause chemical burns.
O A coin battery or button battery is used in the electronic key. If a battery is
swallowed, it may cause severe chemical burns in as little as 2 hours and
may result in death or serious injury.
O Keep away new and removed batteries from children.
O If the cover cannot be firmly closed, stop using the electronic key and stow
the key in the place where children cannot reach, and then cont act any
authorized Toyota retailer or Toyota authorized repairer, or an y reliable
repairer as soon as possible.
O If you accidentally swallow a battery or put a battery into a part of your
body, get emergency medical attention immediately.
Q To prevent battery explosion or leakage of flammable liquid or gas
O Replace the battery with a new battery of the same type. If a wrong type of
battery is used, it may explode.
O Do not expose batteries to extremely low pressure due to high altitude or
extremely high temperatures.
O Do not burn, break or cut a battery.
Q Certification for the smart entry & start system
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS
NOTICE
Q For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
O Always work with dry hands.
Moisture may cause the battery to rust.
O Do not touch or move any other component inside the remote control.
O Do not bend either of the battery terminals.

645
8When trouble arises
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
8-1. Essential information
Emergency flashers ........... 646
If your vehicle has to
be stopped in an
emergency ....................... 647
If the vehicle is submerged
or water on the road
is rising ............................ 648
8-2. Steps to take in an
emergency
If your vehicle needs
to be towed ...................... 650
If you think something is
wrong ............................... 656
If a warning light turns on
or a warning buzzer
sounds ............................. 657
If a warning message is
displayed ......................... 665
If you have a flat tire .......... 673
If the hybrid system will
not start............................ 691
If the electronic key does
not operate properly ........ 693
If the 12-volt battery is
discharged ....................... 697
If your vehicle
overheats ......................... 703
If the vehicle becomes
stuck ................................ 708