Page 465 of 624

4656-3. Do-it-yourself maintenance
6
Maintenance and care
Remove the dust from the air
intake vent with a vacuum
cleaner, etc.
Make sure to only use a vacuum to
suck out dust and clogs. Attempt-
ing to blow out dust and clogs
using an airgun, etc. may push it
into the air intake vent. (P. 4 6 9 )
If dust and clogs cannot be completely removed with the air intake
vent cover installed, remove the cover and clean the filter.
Turn the power switch off.
Using a Phillips screwdriver,
remove the clip.
Cleaning the hybrid batter y (traction bat-
ter y) air intake vent and filter
To prevent the fuel economy from being affected, visually
inspect the hybrid battery (traction battery) air intake vent peri-
odically for dust and clogs. If it is dusty or clogged or if “Mainte-
nance Required for Traction Battery Cooling Parts See Owner’s
Manual” is displayed on the multi-information display, clean the
air intake vent using the following procedures:
Cleaning the air intake vent
If dust and clogs cannot be completely removed
1
2
Page 466 of 624
4666-3. Do-it-yourself maintenance
Remove the air intake vent
cover.
Pull the cover as shown in
the illustration to disengage
the 7 claws, starting from the
claw in the upper right cor-
ner.
Pull the cover toward the
front of the vehicle to remove
it.
Remove the air intake vent fil-
ter.
Disengage the 3 claws as
shown in the illustration.
Remove the filter from the
cover.
Remove the dust and clogs
from the filter using a vacuum
cleaner, etc.
Make sure to also remove the dust
and clogs from the inside of the air
intake vent cover.
3
1
2
4
1
2
5
Page 467 of 624
4676-3. Do-it-yourself maintenance
6
Maintenance and care
Reinstall the filter to the cover.
Engage the filter to the 2
claws as shown in the illus-
tration.
Engage the 3 claws to install
the filter.
Make sure that the filter is not
crooked or deformed when install-
ing it.
Install the air intake vent cover.
Insert the tab of the cover as
shown in the illustration.
Push the cover to engage the
7 claws.
Using a Phillips screwdriver,
install the clip.
6
1
2
7
1
2
8
Page 468 of 624

4686-3. Do-it-yourself maintenance
■Scheduled maintenance of the air intake vent is necessary when
In some situations such as when the vehicle is used frequently or in heavy
traffic or dusty areas, the air intake vent may need to be cleaned more regu-
larly. For details, refer to “Scheduled Maintenance Guide” or “Owner’s Man-
ual Supplement”.
■Cleaning the air intake vent
●Dust in the air intake vent may interfere with the cooling of the hybrid battery
(traction battery). If charging/discharging of the hybrid battery (traction bat-
tery) becomes limited, the distance that the vehicle can be driven using the
electric motor (traction motor) may be reduced and the fuel economy may
be reduced.
Inspect and clean the air intake vent periodically.
●Improper handling of the air intake vent cover and filter may result in dam-
age to them. If you have any concerns about cleaning the filter, contact your
Toyota dealer.
■If “Maintenance Required for Traction Battery Cooling Parts See Owner’s
Manual” is displayed on the multi-information display
●If this warning message is displayed on the multi-information display,
remove the air intake vent cover and clean the filter. (P. 465)
●After cleaning the air intake vent, start the hybrid system and check that the
warning message is no longer displayed.
After the hybrid system is started, it may be necessary to drive the vehicle
up to approximately 20 minutes before the warning message disappears. If
the warning message does not disappear after driving for appropriately 20
minutes, have the vehicle inspected by your Toyota dealer.
WARNING
■When cleaning the air intake vent
●Do not use water or other liquids to clean the air intake vent. If water is
applied to the hybrid battery (traction battery) or other components, a mal-
function or fire may occur.
●Before cleaning the air intake vent, make sure to turn the power switch off
to stop the hybrid system.
■
When removing the air intake vent cover
Do not touch the service plug located near the air intake vent. (P. 85)
Page 469 of 624

4696-3. Do-it-yourself maintenance
6
Maintenance and care
NOTICE
■When cleaning the air intake vent
■To prevent damage to the vehicle
●Do not allow water or foreign matter to enter the air intake vent when the
cover is removed.
●Carefully handle the removed filter so that it will not be damaged.
If the filter is damaged, have it replaced with a new filter by your Toyota
dealer.
●Make sure to reinstall the filter and cover to their original positions after
cleaning.
●Do not install anything to the air intake vent other than the exclusive filter
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4f0057004800550003004c0051005600570044004f004f0048[d.
■If “Maintenance Required for Traction Battery Cooling Parts See
Owner’s Manual” is displayed 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 a warning message is displayed, clean the air intake vent imme-
diately.
When cleaning the air intake vent, make
sure to only use a vacuum to suck out
dust and clogs. If a compressed air blow
gun, etc. is used to blow out dust and
clogs, the dust or clogs may be pushed
into the air intake vent, which may affect
the performance of the hybrid battery
(traction battery) and cause a malfunc-
tion.
Page 470 of 624
4706-3. Do-it-yourself maintenance
●Flathead screwdriver
●Small flathead screwdriver
●Lithium battery CR2032
Release the lock and remove
the mechanical key.
Remove the key cover.
To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.
Remove the depleted battery
using a small flathead screw-
driver.
When removing the cover, the
electronic key module may stick to
the cover and the battery may not
be visible. In this case, remove the
electronic key module in order to
remove the battery.
Insert a new battery with the “+” terminal facing up.
Electronic key batter y
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2
3
Page 471 of 624

4716-3. Do-it-yourself maintenance
6
Maintenance and care
When installing the key cover and mechanical key, install by con-
ducting and with the directions reversed.
Operate the or switch and check that the doors can
be locked/unlocked.
■When replacing the key battery
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44004f004f0003005300440055005700560011[
■Use a CR2032 lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appliance
shops or camera stores.
●Replace only with the same or equivalent type recommended by the manu-
facturer.
●Dispose of used batteries according to local laws.
■If the key battery is depleted
The following symptoms may occur:
●The smart key system and wireless remote control will not function properly.
●The operational range will be reduced.
WARNING
■Battery precautions
Observe the following precautions. Failure to do so may result in death or
serious injury.
●Do not swallow the battery. Doing so may cause chemical burns.
●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.
●Keep away new and removed batteries from children.
●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 contact your
Toyota dealer.
●If you accidentally swallow a battery or put a battery into a part of your
body, get emergency medical attention immediately.
■To prevent battery explosion or leakage of flammable liquid or gas
●Replace the battery with a new battery of the same type. If a wrong type of
battery is used, it may explode.
●Do not expose batteries to extremely low pressure due to high altitude or
extremely high temperatures.
●Do not burn, break or cut a battery.
4
21
5
Page 472 of 624
4726-3. Do-it-yourself maintenance
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.