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6-3. Do-it-yourself maintenance
The 12-volt battery is located in the
right-hand side of the rear seats.
1 Remove the screws.
2 Remove the clips from the
claws.
3 Slide the tabs out of the
notches.
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-mable and explosive. Therefore,
observe the following precautions before recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to dis-connect the ground cable.
●Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the 12-volt battery.
■After recharging/reconnecting the 12-volt battery (vehicles with a
smart entry & start system)
●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/unlock the doors.
●Start the hybrid system with the power switch in ACC. The hybrid system
may not start with the power switch turned off. However, the hybrid sys-tem 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 status it
was in before the 12-volt battery was disconnected. Make sure to turn off the power before disconnecting the
12-volt battery. Take extra care when connecting the 12-volt battery if the power switch mode prior to discharge
is unknown.
If the system will not start even after multiple attempts, contact any autho-
rized Toyota retailer or Toyota autho- rized repairer, or any reliable repairer.
12-volt batter y
Location
Removing the 12-volt bat-
tery cover
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6-3. Do-it-yourself maintenance
Maintenance and care
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart entry & start system (if equipped) and wireless remote control
will not function properly.
●The operational range will be reduced.
Flathead screwdriver
Small flathead screwdriver
Lithium battery CR2032 (vehi-
cles without a smart entry & start
system), or CR2450 (vehicles
with a smart entry & start sys-
tem)
■Use a CR2032 (vehicles without a
smart entry & start system) or CR2450 (vehicles with a smart entry & start system) lithium bat-
tery
●Batteries can be purchased at any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
NOTICE
●Do not install anything to the air intake vent other than the exclusive
filter for this vehicle or use the vehi- cle without the filter installed.
■If “Maintenance Required for Traction Battery Cooling Parts See Owner’s Manual” is dis-
played on the multi-information display
If the vehicle is continuously driven
with the warning message (indicating that charging/discharging of the hybrid battery [traction battery] may
become limited) displayed, the hybrid battery (traction battery) may mal-function. If the warning message is
displayed, clean the air intake vent immediately.
Wireless remote con-
trol/electronic key bat-
ter y
Replace the battery with a new
one if it is depleted.
As the key may be damaged if
the following procedure is not
performed properly, it is rec-
ommended that key battery
replacement be performed by
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
Items to prepare
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6-3. Do-it-yourself maintenance
repairer, local electrical appliance
shops or camera stores.
●Replace only with the same or equiva-
lent type recommended by the manu- facturer.
●Dispose of used batteries according to local laws.
Vehicles without a smart entry &
start system
1 Remove the key cover.
To prevent damage to the key, cover the tip of the flathead screwdriver with a
rag.
2 Remove the battery cover.
Use a screwdriver of an appropriate size. Forcedly prying may cause the
cover damaged.
If the battery cover is difficult to remove, lift the edge to remove it.
3 Remove the depleted battery
using a small flathead screw-
driver.
When removing the battery, use a screwdriver of an appropriate size.
Insert a new battery with the “+” termi-
nal facing up.
4 Install the battery cover with the
tab facing up.
Push the entire edge of the battery
cover into the key.
5 Install the key cover.
Align the key cover with the key and then press it straight into the key.
Make sure that the key cover is securely installed without any gaps
Replacing the battery
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HV Owner's Manual_Europe_M52N30_en
6-3. Do-it-yourself maintenance
Maintenance and care
between it and the key.
6Operate the or switch
and check that the doors can be
locked/unlocked.
Vehicles with a smart entry &
start system
1 Release the lock and remove
the mechanical key.
2 Remove the key cover.
Use a screwdriver of an appropriate size. Forcedly prying may cause the cover damaged.
To prevent damage to the key, cover the tip of the flathead screwdriver with a
rag.
3 Remove the depleted battery
using a small flathead screw-
driver.
When removing the cover, the elec-
tronic key module may stick to the cover and the battery may not be visi-ble. In this case, remove the electronic
key module in order to remove the bat- tery.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” termi- nal facing up.
4 When installing the key cover
and mechanical key, install by
conducting step 2 and step 1
with the directions reversed.
5 Operate the or switch
and check that the doors can be
locked/unlocked.
7
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HV Owner's Manual_Europe_M52N30_en
7
When trouble arises
When trouble arises
7-1. Essential information
Emergency flashers .......... 366
If your vehicle has to be
stopped in an emergency 366
If the vehicle is submerged or
water on the road is rising
....................................... 367
7-2. Steps to take in an emer-
gency
If your vehicle needs to be
towed .............................. 369
If you think something is wrong
....................................... 372
If a warning light turns on or a
warning buzzer sounds... 374
If a warning message is dis-
played ............................. 383
If you have a flat tire (vehicles
with an emergency tire punc-
ture repair kit) ................. 386
If you have a flat tire (vehicles
with a spare tire) ............. 397
If the hybrid system will not
start ................................ 405
If you lose your keys ......... 407
If the electronic key does not
operate properly (vehicles
with a smart entry & start sys-
tem) ................................ 407
If the 12-volt battery is dis-
charged .......................... 409
If your vehicle overheats... 414
If the vehicle becomes stuck
....................................... 417
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HV Owner's Manual_Europe_M52N30_en
7-1. Essential information
When trouble arises
Vehicles with a smart entry &
start system
Press and hold the power switch for 2
consecutive seconds or more, or press
it briefly 3 times or more in succession.
5 Stop the vehicle in a safe place
by the road.
If the door can be opened, open
the door and exit the vehicle.
If the door can not be opened,
open the window using the
power window switch and ensure
an escape route.
If the window can be opened,
exit the vehicle through the win-
dow.
If the door and window cannot be
opened due to the rising water,
remain calm, wait until the water
level inside the vehicle rises to
the point that the water pressure
inside of the vehicle equals the
water pressure outside of the
vehicle and then open the door
after waiting for the rising water
to enter the vehicle, and exit the
vehicle. When the outside water
level exceeds half the height of
the door, the door cannot be
opened from the inside due to
WARNING
■If the hybrid system has to be turned off while driving
●Power assist for the steering wheel
will be lost, making the steering wheel heavier to turn. Decelerate as much as possible before turning
off the hybrid system.
●Vehicles without a smart entry &
start system: Never attempt to remove the key, as doing so will lock the steering wheel.
If the vehicle is sub-
merged or water on the
road is rising
This vehicle is not designed to
be able to drive on roads that
are deeply flooded with water.
Do not drive on roads where
the roads may be submerged
or the water may be rising. It is
dangerous to remain in the
vehicle, if it anticipated that the
vehicle will be flooded or set a
drift. Remain calm and follow
the following.
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7-2. Steps to take in an emergency
When trouble arises
One of the following may be the
cause of the problem:
Vehicles with a smart entry &
start system: The electronic key
may not be functioning properly.
( P.407)
There may not be sufficient fuel
in the vehicle’s tank. Refuel the
vehicle.
There may be a malfunction in
the immobilizer system. ( P.84)
There may be a malfunction in
the steering lock system.
Vehicles with a smart entry &
start system: The hybrid system
may be malfunctioning due to an
electrical problem such as elec-
tronic key battery depletion or a
blown fuse. However, depend-
ing on the type of malfunction, an
interim measure is available to
start the hybrid system.
NOTICE
■Driving with tire chains and the compact spare tire (if equipped)
Do not fit tire chains to the compact spare tire. Tire chains may damage the vehicle body and adversely affect
driving performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and transmitter, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer as the tire pressure warning
valve and transmitter may be dam- aged if not handled correctly.
■To avoid damage to the tire pres-sure warning valves and trans-mitters (except for compact
spare)
When a tire is repaired with liquid sealants, the tire pressure warning
valve and transmitter may not operate properly. If a liquid sealant is used, contact any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer as soon as possible. Make sure to replace the tire pressure
warning valve and transmitter when replacing the tire. ( P.336)
If the hybrid system will
not start
Reasons for the hybrid system
not starting vary depending on
the situation. Check the follow-
ing and perform the appropri-
ate procedure:
The hybrid system will not
start even though the cor-
rect starting procedure is
being followed. ( P.173,
175)
407
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HV Owner's Manual_Europe_M52N30_en
7-2. Steps to take in an emergency
When trouble arises
■When the electronic key does not work properly
●Make sure that the smart entry & start system has not been deactivated in
the customization setting. If it is off, turn the function on. (Customizable features: P.431)
●Check if battery-saving mode is set. If it is set, cancel the function. ( P.141)
If you lose your keys
New genuine keys can be
made by any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable
repairer using the other key
(vehicles without a smart entry
& start system) or mechanical
key (vehicles with a smart
entry & start system) and the
key number stamped on your
key number plate.
Keep the plate in a safe place
such as your wallet, not in the
vehicle.
NOTICE
■When an electronic key is lost (vehicles with a smart entry &
start system)
If the electronic key remains lost, the risk of vehicle theft increases signifi-
cantly. Visit any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer immediately
with all remaining electronic keys that were provided with your vehicle.
If the electronic key
does not operate prop-
erly (vehicles with a
smar t entr y & start sys-
tem)
If communication between the
electronic key and vehicle is
interrupted ( P.142) or the
electronic key cannot be used
because the battery is
depleted, the smart entry &
start system and wireless
remote control cannot be used.
In such cases, the doors can
be opened and the hybrid sys-
tem can be started by following
the procedure below.
NOTICE
■In case of a smart entry & start system malfunction or other key-related problems
Take your vehicle with all the elec- tronic keys provided with your vehicle to any authorized Toyota retailer or
Toyota authorized repairer, or any reli- able repairer.