2021 TOYOTA HIGHLANDER HYBRID air filter

4416-3. Do-it-yourself maintenance
6
Maintenance and care
HIGHLANDER HV_U
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. Attempting
to blow out dust and clogs using an
airgun, etc. may push it into the air
intake vent. (P.443)
If dust and clogs cannot be com-
pletely removed with the air
intake vent cover installed,
remove the cover and clean the
filter.
1 Turn the power switch off.
2 Remove the air intake vent
cover.
Pull the cover as shown in the illus-
tration to disengage the 6 claws,
starting from the claw in the upper
right corner and pull the cover
toward the front of the vehicle to
remove it.
3 Remove the air intake vent
filter.
Disengage the claw to remove the
filter from the rear scuff plate.
Cleaning the hybrid
batter y (traction bat-
ter y) air intake vents
and filter
To prevent the fuel economy
from being affected, visually
inspect the hybrid battery
(traction battery) air intake
vents periodically for dust
and clogs. If it is dusty or
clogged or if “Maintenance
Required for Traction Bat-
tery Cooling Parts See
Owner’s Manual” is shown
on the multi-information
display, clean the air intake
vent using the following
procedures:
Cleaning the air intake
vents
If dust and clogs cannot
be completely removed

4426-3. Do-it-yourself maintenance
HIGHLANDER HV_U
4Remove 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.
5Reinstall the filter to the
cover.
Engage the 3 claw to install the fil-
ter.
Make sure that t he filter is not
crooked or deformed when install-
ing it.
6 Install the air intake vent
cover.
I ns er t t he t ab o f th e co ve r a s sh ow n
in the illustrati on and push the cover to enga
ge the 6 claws.
■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 regularly. For d etails, refer to
“Scheduled Maintenance Guide”.
■Cleaning the air intake vent
●Dust in the air intake vent may
interfere with the cooling of the
hybrid battery (trac tion battery). If
charging/discharging of the hybrid
battery (traction battery) becomes
limited, the distance that the vehi-
cle 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 periodi-
cally.
●Improper handling of the air intake
vent cover and filt er may result in
damage 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 multi-information display
●If this warning message is shown
on the multi-information display,
remove the air intake vent cover
and clean the filter. ( P.441)
●After cleaning the air intake vent,
start the hybrid system and check

4436-3. Do-it-yourself maintenance
6
Maintenance and care
HIGHLANDER HV_Uthat the warning message is no
longer shown. It may take approxi-
mately 20 minutes after the hybrid
system is started until the warning
message disappears. If the warn-
ing message does not disappear,
have the vehicle inspected by
your Toyota dealer.
WARNING
■When cleaning the air intake
vent
●Do not use water or other liq-
uids to clean the air intake vent.
If water is applied to the hybrid
battery (traction battery) or
other components, a malfunc-
tion or fire may occur.
●Before cleaning the air intake
vents, make su
re to turn the
power switch off to stop the
hybrid system.
NOTICE
■When cleaning the air intake
vent
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 (tr action battery)
and cause a malfunction.
■To prevent damage to the
vehicle
●Do not allow wa ter or foreign
matter to enter the air intake
vent when the cover is
removed.
●Carefully handle the removed
filter so that i t will not be dam-
aged. 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 posi-
tions after cleaning.
●Do not install anything to the air
intake vent other than the exclu-
sive filter for this vehicle or use
the vehicle witho ut the filter
installed.
■If “Maintenance Required for
Traction Battery Cooling
Parts See Owner’s Manual” is
shown on the multi-informa-
tion display
If the vehicle is continuously
driven with the warning message
(indicating that charging/discharg-
ing of the hybrid battery (traction
battery) may become limited) dis-
played, the hybrid battery (traction
battery) may malfunction. If the
warning message is displayed,
clean the air intake vent immedi-
ately.

559Alphabetical Index
HIGHLANDER HV_U
Alphabetical Index
A
A/C ........................................... 342Air conditioning filter ............. 439
Automatic air conditioning sys-tem ..................................... 342
Eco air conditioning mode .... 349
Front seat concentrated airflow mode (S-FLOW) ................. 351
Rear automatic air conditioning system ................................ 354
ABS (Anti-lock Brake System) ............................................... 325Warning light ........................ 468
ACA (Active Cornering Assist) ............................................... 325
Active Cornering Assist (ACA) ............................................... 325
Adaptive Front-lighting System (AFS)...................................... 231
AFS (Adaptive Front-lighting System) ................................. 231
AHB (Automatic High Beam) . 232
Air conditioning filter ............. 439
Air conditioning system ........ 342 Air conditioning filter ............. 439
Automatic air conditioning sys-tem ..................................... 342
Eco air conditioning mode .... 349
Front seat concentrated airflow mode (S-FLOW) ................. 351
Rear automatic air conditioning system ................................ 354
Airbags Airbag operating conditions.... 36
Airbag precautions for your child............................................. 39
Correct driving posture ........... 25
Curtain shield airbag operating conditions ............................. 37
Curtain shield airbag precautions ............................................. 39 Front passenger occupant clas-
sification system ...................43
General airbag precautions ....39
Locations of airbags ...............34
Modification and disposal of air- bags......................................42
Side airbag operating conditions .............................................37
Side airbag precautions..........39
Side and curtain shield airbags operating conditions .............37
Side and curtain shield airbags precautions ...........................39
SRS airbags ...........................34
SRS warning light .................468
Alarm .........................................81 Warning buzzer ....................466
Anchor brackets ... ..............52, 62
Antennas (smart key system)146
Anti-lock Brake System (ABS) ...............................................325Warning light.........................468
Approach warning ..................278
Armrest ......... ......................... ..382
Assist grips .............................382
Audio system-linked display .96, 106
Automatic air conditioning sys- tem .........................................342Eco air conditioning mode ....349
Automatic headlight leveling system ...................................230
Automatic High Beam ............232
Automatic light control system ...............................................230
Auxiliary boxes ...............368, 373
Average fuel economy .....94, 102
Average vehicle speed .....96, 106
AWD Control .....................97, 106
B
Back door ................................135