2010 TOYOTA SIENNA air conditioning

Maintenance and care4
417
4-1. Maintenance and careCleaning and protecting the vehicle exterior......... 418
Cleaning and protecting the vehicle interior.......... 421
4-2. Maintenance Maintenance requirements .................. 424
General maintenance....... 426
Emission inspection and maintenance (I/M)
programs........................ 429 4-3. Do-it-yourself maintenance
Do-it-yourself service precautions .................... 430
Hood ................................ 434
Positioning a floor jack ..... 436
Engine compartment ........ 438
Tires ................................. 454
Tire inflation pressure ...... 463
Wheels ............................. 467
Air conditioning filter......... 469
Wireless remote control battery ............................ 472
Checking and replacing fuses .............................. 474
Light bulbs........................ 486

432 4-3. Do-it-yourself maintenance
CAUTION
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 or 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.
● Take care because brake fluid can harm your hands or eyes and damage
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with
clean water immediately.
If you still experience discomfort, see a doctor.
● Do not touch the engine compartment when the electric cooling fan is
operating.
The electric cooling fan may keep rotating for about 3 minutes even after
the engine switch is turned to the “LOCK” position.
With the engine switch in the “ON” position, the electric cooling fan may
automatically start to run if the air conditioning is on and/or the coolant
temperature is high. Be sure the engine switch is in the “LOCK” position
and that the electric cooling fan is completely stopped when working near
the electric cooling fan or radiator grille.
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.

446 4-3. Do-it-yourself maintenance
Radiator and condenserCheck the radiator and condenser, and clear any foreign objects.
If either of the above parts are ex tremely dirty or you are not sure of
their condition, have your vehicl e checked by your Toyota dealer.
Brake fluid
■ Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
“MAX”
“MIN”
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and may cause
burns.
■ When the electric cooling fan is operating
Do not touch the engine compartment.
The electric cooling fan may keep rotating for about 3 minutes after the
engine switch is turned to the “LOCK” position.
With the engine switch in the “ON” position, the electric cooling fan may
automatically start to run if the air conditioning is on and/or the coolant tem-
perature is high. Be sure the engine switch is in the “LOCK” position and that
the electric cooling fan is completely stopped when working near the ele\
ctric
cooling fan or radiator grille.

469
4-3. Do-it-yourself maintenance
4
Maintenance and care
Air conditioning filter
The air conditioning filter must be cleaned or changed regularly to
maintain air conditioning efficiency.
■ Removal method
Turn the engine switch to the “LOCK” position.
Open the glove box. Slide off
the damper.
Push in each side of the glove
box to disconnect the claws.
Remove the filter case.
STEP1
STEP2
STEP3
STEP4

471
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
Checking interval
Inspect, clean and replace the air conditioning filter according to the mainte-
nance schedule. In dusty areas or areas with heavy traffic flow, more fre-
quent 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.
NOTICE
■To prevent damage to the system
●When using the air conditioning system, make sure that a filter is always
installed.
● When cleaning the filter, do not clean the filter with water.

479
4-3. Do-it-yourself maintenance
4
Maintenance and care
8 RAD NO.1 15 A Audio system
9 EFI NO.1 20 A
Multiport fuel injection system/
sequential multiport fuel injection
system, EFI NO.2
10 ALT-S 7.5 A Charging system
11 HAZ 15 A Turn signal lights, emergency
flashers
12 ECU-B 10 A Power sliding door, air conditioning
system, power windows, multiplex
communication system, meter and
gauge, wireless remote control sys-
tem
13 H-LP RH 15 A Right-hand headlight
14 H-LP LH 15 A Left-hand headlight
15 RAD NO.3 30 A Audio system
16 EFI NO.2 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
17 A/F 25 A Multiport fuel injection system/
sequential multiport fuel injection
system
18 SPARE 15 A Spare fuse
19 SPARE 20 A Spare fuse
20 SPARE 30 A Spare fuse
21 SPARE 30 A Spare fuse
22 RR2 SEAT 50 A Power third seat
23 HTR 50 A Air conditioning system, A/C
24 FAN 50 A Electric cooling fans
25 PBD 30 A Power back door
26 R-PSD 30 A Right side power sliding door
FuseAmpereCircuit

480 4-3. Do-it-yourself maintenance
27 L-PSD30 A Left side power sliding door
28 RR A/C 40 A Rear air conditioning system
29 DEF 40 A Rear window defogger, MIR HTR
30 SPARE 7.5 A Spare fuse
31 ALT 140 ACharging system, RR A/C, HTR,
FAN, PBD, R-PSD, L-PSD, DEF
32 ABS1 50 AAnti-lock brake system, traction
control system, vehicle stability
control system
33 ABS2 30 AAnti-lock brake system, traction
control system, vehicle stability
control system
34 ST 30 A Starting system
35 L-RR2 SEAT 30 A Power third seat
36 R-RR2 SEAT 30 A Power third seat
37 H-LP RL 10 A Right-hand headlight (low beam)
38 H-LP LL 10 ALeft-hand headlight (low beam),
front fog lights
39 RSE 7.5 A Rear seat entertainment system
40 INJ 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
FuseAmpereCircuit

482 4-3. Do-it-yourself maintenance
13 WSH20 AWindshield washer and rear win-
dow washer
14 HTR 10 A Air conditioning system
15 ECU-IG 10 AIntuitive parking assist system, rear
view monitor system, multiplex
communication system, multiport
fuel injection system/sequential
multiport fuel injection system, anti-
lock brake system, traction control
system, vehicle stability control
system, shift lock control system,
dynamic laser cruise control sys-
tem, seat heaters, power back
door, moon roof, multi-information
display, auto anti-glare inside rear
view mirror, power windows, power
outlets (115 V), power third seat,
driving position memory system
16 PANEL 10 AAir conditioning system, seat heat-
ers, audio system, navigation sys-
tem, power sliding door, power
back door, trip information display,
rear window defogger, emergency
flashers, instrument panel lights,
steering switch lights
17 TAIL 10 AStop/tail lights, license plate lights,
parking lights, side maker lights
18 S/ROOF 25 A Moon roof
19 AC INV 15 A Power outlets (115 V)
20 FR DEF 15 A Windshield wiper de-icer
21 AM1 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system, starter system
FuseAmpereCircuit