2022 TOYOTA SIENNA HYBRID air conditioning

4396-3. Do-it-yourself maintenance
6
Maintenance and care
4With the glove box fully open,
slightly lift up the glove box
and pull toward the seat to
detach the bottom of the
glove box.
Do not use excessive force if the
glove box does not detach when
lightly pulled. Ins tead, pull toward
the seat while slightly adjusting the
height of the glove box.
5 Unlock the filter cover ( ),
pull the filter cover out of the
claws ( ), and remove the
filter cover. 6
Remove the filter case.
7 Remove the air conditioning
filter from the filter case and
replace it with a new one.
The “ UP” marks shown on the
filter should be pointing up.
8When installing, reverse the
steps listed.
■Checking interval
Inspect and replace the air condi-
tioning filter according to the mainte-
nance schedule. In dusty areas or
areas with heavy traffic flow, early
replacement may be required. (For
scheduled maintenance information,
please refer to the “Owner’s Manual
Supplement” or “Scheduled Mainte-
nance Guide”.)
■If air flow from the vents
decreases dramatically
The filter may be clogged. Check
the filter and rep lace if necessary.
A
B

4577-1. Essential information
7
When trouble arises
1Steadily step on the brake
pedal with both feet and
firmly depress it.
Do not pump the brake pedal
repeatedly as this will increase the
effort required to slow the vehicle.
2Shift the shift lever to N.
If the shift lever is shifted to N
3 After slowing down, stop the
vehicle in a safe place by the
road.
4 Stop the hybrid system.
If the shift lever cannot be
shifted to N
3 Keep depressing the brake
pedal with both feet to reduce
vehicle speed as much as
possible.
4 To stop the hybrid system,
press and hold the power
switch for 2 consecutive sec-
onds or more, or press it briefly 3 times or more in suc-
cession.
5 Stop the vehicle in a safe
place by the road.
The functions of the air conditioning,
etc. may be partially limited in order
to reduce the power consumption of
the 12-volt battery.
If your vehicle has to
be stopped in an emer-
gency
Only in an emergency, such
as if it becomes impossible
to stop the vehicle in the
normal way, stop the vehi-
cle using the following pro-
cedure:
Stopping the vehicle
WARNING
■If the hybrid system has to be
turned off while driving
Turning the hybrid system off
while driving will not cause loss of
steering or braking control. How-
ever, power assist for the steering
wheel may be lost making it diffi-
cult to steer smoothly before stop-
ping the vehicle depending on the
remaining charge in the 12-volt
battery or usage conditions.
Decelerate as mu ch as possible
before turning off the hybrid sys-
tem.

4637-2. Steps to take in an emergency
7
When trouble arises
Fluid leaks under the vehicle
(Water dripping from the air
conditioning after use or drip-
ping from the muffler is nor-
mal.)
 Flat-looking tires or uneven
tire wear
 Engine coolant temperature
gauge needle continually
points higher than normal.
 Changes in exhaust sound
 Excessive tire squeal when
cornering
 Strange noises related to the
suspension system
 Pinging or other noises
related to the hybrid system
 Engine missing, stumbling or
running roughly
 Appreciable loss of power 
Vehicle pulls heavily to one
side when braking
 Vehicle pulls heavily to one
side when driving on a level
road
 Loss of brake effectiveness,
spongy feeling, pedal almost
touches the floor
If you think something
is wrong
If you notice any of the fol-
lowing symptoms, your
vehicle probably needs
adjustment or repair. Con-
tact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

5107-2. Steps to take in an emergency
2If you see steam:
Carefully lift the hood after
the steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
4The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line “LOW” line
5 Add coolant if necessary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
6Start the hybrid system and
turn the air conditioning sys-
tem on to check that the radi-
ator cooling fan operates and
to check for coolant leaks
from the radiator or hoses.
The fan operates when the air con-
ditioning system is turned on imme-
diately after a cold start. Confirm
that the fan is operating by check-
ing the fan sound and air flow. If it is
difficult to check th ese, turn the air
conditioning system on and off
repeatedly. (The fa n may not oper-
ate in freezing temperatures.)
7 If the fan is not operating:
Stop the hybrid system
immediately and contact your
Toyota dealer.
If the fan is operating:
Have the vehicle inspected at
the nearest Toyota dealer.
8 Check if “Engine Coolant
Temp High Stop in a Safe
Place See Owner’s Manual”
is shown on the multi-infor-
mation display.
A
B
A
B
C

5498-2. Customization
8
Vehicle specifications
■Intuitive parking assist* ( P.311)
*: If equipped
■PKSB (Parking Support Brake)* ( P.323)
*: If equipped
■Automatic air conditioning system ( P.348)
■Illumination ( P.363)
FunctionDefault settingCustomized
setting
Intuitive parking assistOnOff–OO
Buzzer volume21–OO3
FunctionDefault settingCustomized setting
PKSB (Parking Support
Brake) functionOnOff–O–
FunctionDefault settingCustomized setting
A/C Auto switch operationOnOffO–O
Switching to t he outside air
mode when the vehicle is
parked
OnOff––O
FunctionDefault settingCustomized setting
Time elapsed before the inte-
rior lights turn off15 seconds
Off
O–O7.5 seconds
30 seconds
Operation after the power
switch is turned offOnOff––O
Operation when the doors
are unlockedOnOff––O
ABC
ABC
ABC
ABC

569Alphabetical Index
Alphabetical Index
A
A/C ................................... 348, 358Air conditioning filter ............. 438
Eco air conditioning mode .... 352
Front automatic air conditioning system ................................ 348
Front seat concentrated airflow mode (S-FLOW) ................. 354
Rear automatic air conditioning system ................................ 358
ABS (Anti-lock Brake System) ............................................... 334Function ............................... 334
Warning light ........................ 466
ACA (Active Cornering Assist) ............................................... 335
Acoustic Vehicle Alerting Sys- tem ........................................... 81
Active Cornering Assist (ACA) ............................................... 335
AHB (Automatic High Beam) . 252
Airbags ...................................... 41 Airbag operating conditions.... 44
Airbag precautions for your child............................................. 46
Airbag warning light.............. 466
Correct driving posture ........... 33
Curtain shield airbag operating conditions ............................. 44
Curtain shield airbag precautions ............................................. 46
Front passenger occupant clas- sification system ................... 51
General airbag precautions .... 46
Locations of airbags ............... 41
Modification and disposal of air- bags ..................................... 49
Seat cushion airbag ............... 41
Side airbag operating conditions ............................................. 44
Side airbag precautions ......... 46 Side and curtain shield airbags
operating conditions .............44
Side and curtain shield airbags precautions ...........................46
SRS airbags ...........................41
SRS warning light .................466
Air conditioning filter .............438
Air conditioning system.348, 358 Air conditioning filter .............438
Changing the rear seat settings...........................................356
Eco air conditioning mode ....352
Front automatic air conditioning system ................................348
Front seat concent rated airflow
mode (S-FLOW) .................354
Rear automatic air conditioning system ................................358
Alarm .........................................89 Alarm ......................................89
Warning buzzer .. ..................464
Anchor brackets ... ..............60, 71
Antenna (Smart key system) .165
Anti-lock brake system (ABS)334 Function................................334
Warning light ........................466
Approach warning ..................297
Armrest ......... ......................... ..386
Assist grips .............................386
Automatic air conditioning sys- tem .................................348, 358Air conditioning filter .............438
Eco air conditioning mode ....352
Automatic High Beam (AHB) .252
Automatic light control system ...............................................251
Average fuel consumption ....125
Average fuel economy ...........106
Average vehicle speed ...111, 125
B
Back door ................................150

574Alphabetical Index
HeatersFront automatic air conditioning system ................................ 348
Heated steering wheel ......... 361
Outside rear view mirrors ..... 350
Rear automatic air conditioning system ................................ 358
Seat heaters ......................... 361
High mounted stoplight Replacing light bulbs ............ 448
Hill-start assist control .......... 335
Hood ........................................ 410
Hooks Cargo hooks ......................... 372
Coat hooks ........................... 387
Grocery bag hooks ............... 387
Retaining hooks (floor mat) .... 32
Horn ......................................... 187
Hybrid battery (tr action battery)
Location.................................. 83
Specification ......................... 519
Hybrid battery (traction battery) air intake vents ............... 85, 440
Hybrid battery (traction battery) air intake vents and filters ... 440
Hybrid battery air vent ............. 85
Hybrid system .......................... 79 ACC...................................... 236
Acoustic Vehicle Alerting System............................................. 81
Emergency shut off system .... 86
Energy monitor/consumption screen ................................ 122
EV drive mode...................... 238
High voltage components....... 83
How to start the hybrid system ........................................... 233
Hybrid battery (traction battery) air vents.............................. 440
Hybrid System In dicator . 97, 101
Hybrid system precautions ..... 83
Hybrid vehicle driving tips .... 341 If the hybrid sys
tem will not start
...........................................499
If your vehicle has to be stopped in an emergency .................457
Ignition switch (power switch) ...........................................233
Overheating ..........................509
Power (ignition) switch .........233
Regenerative braking .............80
Starting the hybrid system ....233
Hybrid System I ndicator .98, 102,
121
Hybrid transmissio n ...............240
S mode .................................243
I
I/M test .....................................406
Identification Engine ..................................518
Vehicle..................................517
Ignition switch (power switch) ...............................................233Auto power off fun ction.........237
Changing the power switch modes.................................236
If your vehicle has to be stopped in an emergency .................457
Starting the hybrid system ....233
Illuminated entry system .......365
Immobilizer system ..................88
Indicators ..................................95
Initialization Items to initialize ...................551
Maintenance .........................403
Oil maintenance ...................415
Tire pressure warning system...........................................427
Inside rear view m irror ...187, 189
Instrument panel light control99, 103
Interior lights...........................363 Switch ...................................364

Alphabetical Index577
P
Panic mode ............................. 130
Parking assist sensors (intuitive parking assist) ...................... 311
Parking brake Operation ............................. 245
Parking brake engaged warning buzzer ................................ 247
Warning light ........................ 470
Warning message ................ 246
Parking lights Light switch .......................... 250
Replacing light bulbs ............ 448
Parking Support Brake (PKSB) ............................................... 323Indicator ................................. 95
Parking Support Brake function (rear-crossing vehicles) ...... 331
Parking Support Brake function (static objects) .................... 328
Warning light ........................ 468
PCS (Pre-Collision System) Enabling/disabling the pre-colli-sion system ........................ 271
Function ............................... 269
Warning light ........................ 467
Warning message ........ 267, 478
Personal lights ....................... 364 Switch................................... 364
Wattage ................................ 524
PKSB (Parking Support Brake) ............................................... 323Indicator ................................. 95
Parking Support Brake function (rear-crossing vehicles) ...... 331
Parking Support Brake function (static objects) .................... 328
Warning light ........................ 468
Power back door switch ........ 154
Power outlets .................. 374, 375
Power sliding door main switch ...............................................149
Power steering (Electric Power Steering system)...................335Warning light ........................466
Power switch...........................233 Auto power off fun ction.........237
Changing the power switch modes.................................236
Starting the hybrid system ....233
Power windows Door lock linked window opera-tion......................................203
Jam protection function ........202
Operation..............................202
Window lock switch ..............204
Pre-Collision System (PCS) Enabling/disabling the pre-colli-sion system ........................271
Function................................269
Warning light ........................467
Warning messag e ........267, 478
R
Radar cruise control
Dynamic radar cruise control with full-speed range ..........290
Radiator ...................................417
RCD (Rear Came ra Detection)
Function................................319
Warning message . ...............321
RCTA (Rear Cross Traffic Alert) RCTA Function .....................307
Warning message . ...............303
Rear automatic air conditioning system ...................................358
Rear Cross Traffic Alert (RCTA) ...............................................301
Rear heater system ................358
Rear passengers’ seat belt reminder light........................471
Rear seat .................................172 Adjustment ...........................172