2021 TOYOTA PRIUS air filter

550
PRIUS_OM_OM47E09U_(U)
6-3. Do-it-yourself maintenance
■Checking interval
Inspect and replace the air conditioning filter according to th e maintenance
schedule. In dusty areas or areas with heavy traffic flow, earl y replacement
may be required. (For scheduled maintenance information, please refer to the
“Scheduled Maintenance Guide” or “Owner’s Manual Supplement”.)
■ If air flow from the ven ts decreases dramatically
The filter may be clogged. Check the filter and replace if nece ssary.
NOTICE
■When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause da mage to the
system.
■ When removing the glove box
Always follow the specified procedure to remove the glove box ( P. 548). If
the glove box is removed without following the specified proced ure, the
hinge of the glove box may become damaged.
■ To prevent damage to the filter cover
When moving the filter cover in the direc-
tion of arrow to release the fitting, pay
attention not to apply excessive force to
the claws. Otherwise, the claws may be
damaged.

551
PRIUS_OM_OM47E09U_(U)
6-3. Do-it-yourself maintenance
6
Maintenance and care
Cleaning the hybrid batter y (traction bat-
ter y) air intake vent and filter
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. 5 5 5 )
If dust and clogs cannot be completely removed with the air int ake
vent cover installed, remove t he cover and clean the filter.
Turn the power switch off.
Using a Phillips screwdriver,
remove the clip.
To prevent the fuel economy from being affected, visually
inspect the hybrid battery (traction battery) air intake vent p eri-
odically for dust and clogs. If i t is dusty or clogged or if “Mainte-
nance required for Traction batt ery cooling parts See owner’s
manual” is shown on the multi-info rmation 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

552
PRIUS_OM_OM47E09U_(U)
6-3. Do-it-yourself maintenance
Remove the air intake vent
cover.Pull the cover as shown in
the illustration to disengage
the 5 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 1 claw as
shown in the illustration.
Disengage the 2 claws to
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

PRIUS_OM_OM47E09U_(U)
5536-3. 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 1 claw 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
5 claws.
Install the clip.
6
1
2
7
1
2
8

554
PRIUS_OM_OM47E09U_(U)
6-3. 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 clea ned more regu-
larly. For details, refer to the “Scheduled Maintenance Guide” or “Owner’s
Manual Supplement”.
■ Cleaning the air intake vent
●Dust in the air intake vent may interfere with the cooling of t he hybrid battery
(traction battery). If charging/discharging of the hybrid batte ry (traction bat-
tery) becomes limited, the distance that the vehicle can be dri ven using the
electric motor (traction motor) may be reduced and the fuel eco nomy 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 shown on the mu lti-information display
● If this warning message is shown on the multi-information displ ay, remove
the air intake vent cover and clean the filter. ( P. 551)
● After cleaning the air intake vent, start the hybrid system and check that the
warning message is no longer shown.
It may take approximately 20 minutes after the hybrid system is started until
the warning message disappears. If the warning message does not disap-
pear, 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. 91)

PRIUS_OM_OM47E09U_(U)
5556-3. 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 ve nt when the
cover is removed.
● Carefully handle the removed filter so that it will not be dama ged. If the fil-
ter 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
for this vehicle or use the vehicle without the filter installe d.
■ If “Maintenance required for Traction battery cooling parts See owner’s
manual” is shown on the mu lti-information display
If the vehicle is continuously driven with the warning message (indicating
that charging/discharging of the hybrid battery [traction batte ry] may
become limited) displayed, the hybrid battery (traction battery ) may mal-
function. If the warning message is shown, clean the air intake vent immedi-
ately.
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.

6077-2. Steps to take in an emergency
PRIUS_OM_OM47E09U_(U)
7
When trouble arises
■If “Shift System Malfunction See Owner’s Manual” is shown
Indicates a malfunction in the shift control system. Immediatel y have the sys-
tem inspected by your Toyota dealer.
The system may not operate properly.
■ If “Low 12-Volt Battery Apply Parking Brake Securely While Park ing See
Owner’s Manual” is shown
Indicates that the 12-volt battery charge is insufficient. Char ge or replace the
12-volt battery.
● When the message is shown, the hybrid system may not start or t he shift
position may not be changed normally. (Coping method: P. 609)
● After charging the 12-volt battery, the message may not go off until the shift
position is changed from P.
■ If “Shifting Unavailable Low 12-Volt Battery See Owner’s Manual ” is
shown
Indicates that the shift position cannot be changed because the voltage of the
12-volt battery drops. Charge or replace the 12-volt battery.
(Coping method in the case the 12-volt battery is discharged: P. 650)
■ If “Hybrid System Overheated. Reduced Output Power.” is shown
The message may be shown when driving under severe operating co nditions.
(For example, when driving up a long steep hill or driving up a steep hill in
reverse.)
Coping method: P. 656
■ If “Maintenance required for Traction battery cooling parts See owner’s
manual” is shown
The filter may be clogged, the air intake vent may be blocked or there may be
a gap in the duct.
● If the air intake vent is dirty, refer to P. 551 for information on how to clean
the air intake vent.
● If the message is shown when the air intake vent is not dirty, have the vehi-
cle inspected by your Toyota dealer.
■ If “Traction Battery Needs to be Protected Refrain From the Use of
Position” is shown
This message may be displayed when the shift position is in N.
As the hybrid battery (traction battery) can not be charged when the shift
position is in N, shift the shift position to P when the vehicle is stopped.
■ If “Traction Battery Needs to be Protected Shift into to Resta rt” is
shown
This message is displayed when the hybrid battery (traction battery) charge
has become extremely low because the vehicle has been left with the N shift
position selected for a certain amount of time.
When operating the vehicle, shift to P and restart the hybrid s ystem.

724Alphabetical index
PRIUS_OM_OM47E09U_(U)
Alphabetical index
A/C .................................... 436, 446Air conditioning eco
mode .......................... 439, 449
Air conditioning filter ............. 548
Automatic air conditioning system .... 436, 446
Eco score (A/C score)........... 148
Front seat concentrated airflow mode
(S-FLOW) ................... 438, 448
ABS (Anti-lock Brake
System) .................................. 420 Function ................................ 420
Warning light ......................... 593
ACA (Active Cornering Assist) ................................... 420
Active Cornering Assist
(ACA) ...................................... 420
AHB (Automatic High Beam) ..................................... 268
Adaptive Front-lighting System (AFS) ......................... 265
AFS (Adaptive Front-lighting
System) .................................. 265
Air conditioning filter .............. 548
Air conditioning system ............................ 436, 446
Air conditioning eco mode .......................... 439, 449
Air conditioning filter ............. 548
Automatic air
conditioning system .... 436, 446
Eco score (A/C score)........... 148
Front seat concentrated
airflow mode
(S-FLOW) ................... 438, 448
Air intake vent ............................ 89 Cleaning................................ 551 Airbags ....................................... 35
Airbag operating conditions .... 43
Airbag precaut ions for your
child ...................................... 38
Airbag warning light .............. 593
Correct driving posture ........... 28
Curtain shield airbag operating conditions ............. 44
Curtain shield airbag precautions........................... 41
Front passenger occupant
classification syst em ............ 49
General airbag precautions .... 38
Locations of airbags ............... 35
Modification and disposal of airbags ................................. 42
Side airbag operating
conditions ............................. 44
Side airbag precautions .......... 40
Side and curtain shield airbags operating
conditions ............................. 44
Side and curtain shield
airbags precautions .............. 41
SRS airbag instructions for Canadian owners ............... 707
SRS airbags ........................... 35
Anchor brackets ........................ 72
Antenna Smart key system ................. 196
A