2016 TOYOTA SIENNA air conditioning

463
SIENNA_OM_OM08013U_(U)
7Maintenance and care
7-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 464
Cleaning and protecting the vehicle interior ........... 467 7-2. Maintenance
Maintenance requirements ................... 470
General maintenance........ 473
Emission inspection and maintenance (I/M)
programs ......................... 476
7-3. Do-it-yourself maintenance Do-it-yourself service precautions ..................... 477
Hood ................................. 479
Positioning a floor jack ...... 481
Engine compartment ......... 482
Tires .................................. 492
Tire inflation pressure ....... 500
Wheels .............................. 503
Air conditioning filter.......... 505
Wireless remote control/ electronic key battery ...... 507
Checking and replacing fuses ............................... 510
Light bulbs......................... 513

478
SIENNA_OM_OM08013U_(U)
7-3. Do-it-yourself maintenance
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions:
■When working on the engine compartment:
●Keep hands, clothing and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
● Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
■ When working near the electric cooling fans or radiator grille
Be sure the engine switch is in the “LOCK” position (vehicles without a
smart key system) or off (vehicles with a smart key system). With the engine
switch in the “ON” position (vehicles without a smart key system) or IGNI-
TION ON mode (vehicles with a smart key system), the electric cooling fans
may automatically start to run if the air conditioning is on and/or the coolant
temperature is high. ( P. 487)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.

505
SIENNA_OM_OM08013U_(U)
7-3. Do-it-yourself maintenance
7
Maintenance and care
Air conditioning filter
Turn the engine switch to the “LOCK” position (vehicles without a
smart key system) or off (vehic les with a smart key system).
Open the glove box. Slide off
the damper.
Push in each side of the glove
box to disconnect the claws.
Remove the filter cover.
The air conditioning filter must be changed regularly to maintain
air conditioning efficiency.
Removal method
1
2
3
4

506
SIENNA_OM_OM08013U_(U)
7-3. Do-it-yourself maintenance
Remove the filter and replace it
with a new one.
The“  UP” marks shown on the fil-
ter should be pointing up.
■ Checking interval
Replace the air conditioning filter according to the maintenance schedule. In
dusty areas or areas with heavy traffic flow, more frequent cleaning or early
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 vents decreases dramatically
The filter may be clogged. Check the filter and replace it if necessary.
5
NOTICE
■When using the ai r conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the
system.

591
SIENNA_OM_OM08013U_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If your vehicle overheats
●The needle of the engine coolant temperature gauge ( P. 8 8 )
enters the red zone or a loss of engine power is experienced. (For
example, the vehicle sp eed does not increase.)
● The warning message indicating overheats is shown on the multi-
information display. ( P. 555)
● Steam is coming from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down su fficiently, inspect the hoses and
radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact your
Toyota dealer.
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

5928-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(U)
The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Radiator cap
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fans oper ate and to check for coolant leaks
from the radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking the
fan sound and air flow. If it is difficult to check these, turn the air condition-
ing system on and off repeatedly. (The fans may not operate in freezing
temperatures.)
If the fans are not operating:
Stop the engine immediately an d contact your Toyota dealer.
If the fans are operating:
Have the vehicle in spected at the nearest Toyota dealer.
4
1
2
3
4
5
6
7

616
SIENNA_OM_OM08013U_(U)
9-1. Specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressure Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressure The maximum cold inflat
ed pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended
inflation pressure Cold tire inflation pressure recommended by a
manufacturer
Accessory weight The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent
that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded
vehicle weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight 150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distribution Distribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below
Production options
weight The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy
duty battery, and special trim

653Alphabetical index
SIENNA_OM_OM08013U_(U)
Alphabetical index
A/C .................................... 408, 417Air conditioning filter ............. 505
Front automatic air
conditioning system ............ 408
Rear automatic air
conditioning system ............ 417
ABS (Anti-lock Brake System) .................................. 293
Function ................................ 293
Warning light ......................... 542
Warning message ................. 553
Active head restraint ............... 150
Active Torque Control 4WD system ........................... 293
Function ................................ 293
Warning message ......... 557, 558
Air conditioning filter .............. 505
Air conditioning system
Air conditioning filter ............. 505
Front automatic air conditioning system ............ 408
Rear automatic air conditioning system ............ 417 Airbags ....................................... 36
Airbag operating
conditions ............................. 45
Airbag precautions for your child......................... 39
Airbag warning light .............. 542
Correct driving posture ........... 26
Curtain shield airbag operating conditions ............. 46
Curtain shield airbag precautions........................... 39
Front passenger occupant classification syst em ............ 50
General airbag
precautions........................... 39
Locations of airbags ............... 36
Modification and disposal of airbags ............... 44
Side and curtain shield airbags operating
conditions ............................. 46
Side and curtain shield airbags precautions .............. 39
SRS airbag instructions for Canadian owners .......... 637
SRS airbags ........................... 36
A