2009 TOYOTA TUNDRA air conditioning

Maintenance and care4
459
4-1. Maintenance and care ... 460Cleaning and protecting the vehicle exterior......... 460
Cleaning and protecting the vehicle interior.......... 462
4-2. Maintenance ................... 465 Maintenance requirements .................. 465
General maintenance....... 467
Emission inspection and maintenance (I/M)
programs........................ 470 4-3. Do-it-yourself
maintenance ................. 471
Do-it-yourself service precautions .................... 471
Hood ................................ 475
Engine compartment ........ 476
Tires ................................. 494
Tire inflation pressure ...... 501
Wheels ............................. 505
Air conditioning filter......... 507
Wireless remote control battery ............................ 510
Checking and replacing fuses .............................. 512
Light bulbs........................ 522

473
4-3. Do-it-yourself maintenance
4
Maintenance and care
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.
■ When working near the cooling fan or radiator grille
Be sure the engine switch is off.
With the engine switch on, the cooling fan may automatically start to run if
the air conditioning is on and/or the coolant temperature is high.
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.

507
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 off.
Open the glove box.
Slide off the damper.
Push in each side of the glove
box to disconnect the claws.

509
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 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.
■ Replacement method
Remove the air conditioning
filter and replace it with a new
one.
The“  UP” marks shown on the
filter should be pointing up.

518 4-3. Do-it-yourself maintenance
*: Replace the fuse with one of the same ampere rating as the original.
38 ABS2 40 A
Anti-lock brake system, vehicle sta-
bility control system
39 ST 30 A Starting system
40 HTR 50 A Air conditioning system
41 LH-J/B 150 A AM1, TAIL, PANEL, ACC, CIG, LH-
IG, 4WD, ECU-IG No.1, BK/UP LP,
SEAT-HTR, A/C IG, ECU-IG No.2,
WSH, WIPER, OBD, A/C, TI&TE,
FR P/SEAT RH, MIR, DR/LCK, FR
P/SEAT LH, CARGO LP, PWR
OUTLET, POWER No.1 fuses
42 ALT 180 A
*LH-J/B, HTR, SUB BATT, TOW
BRK, STOP, FOG, TOW TAIL,
DEICER fuses
140 A
*
43 A/PUMP NO.1 50 A Multiport fuel injection system/
sequential multiport fuel injection
system
44 A/PUMP NO.2 50 A Multiport fuel injection system/
sequential multiport fuel injection
system
45 MAIN 40 A HEAD LL, HEAD RL,
HEAD LH, HEAD RH fuses
FuseAmpereCircuit

519
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
Under the instrument panel
FuseAmpereCircuit
1 INVERTER 15 A Power outlet (115 V)
2 FR P/SEAT LH 30 A Power front driver’s seat
3 DR/LCK 25 A Multiplex communication system
4 OBD 7.5 A On-board diagnosis system
5 PWR OUTLET 15 A Power outlets
6 CARGO LP 7.5 A Cargo lamp
7 AM1 7.5 A Shift lock system, starting system
8 A/C 7.5 A Air conditioning system
9 MIR 15 A Outside rear view mirror control,
outside rear view mirror heaters
10 FR P/SEAT RH 30 A Power front passenger seat
11 TI&TE 15 A Power tilt and power telescopic
12 S/ROOF 25 A Electric moon roof
13 ECU-IG No.1 7.5 A Anti-lock brake system, vehicle sta-
bility control system, multiplex com-
munication system, intuitive
parking assist system, power front
driver’s seat, power tilt and power
telescopic, shift lock, tire pressure
warning system, accessory meter,
trailer towing, power outlet, electric
moon roof

520 4-3. Do-it-yourself maintenance
14 LH-IG7.5 ABack-up lights, charging system,
gauge and meters, turn signal
lights, air conditioning system, seat
heaters, back window defogger
15 4WD 20 A Four-wheel drive control system
16 WSH 20 A Window washer
17 WIPER 30 A Wiper and washer
18 ECU-IG No.2 7.5 A Multiplex communication system
19 TAIL 15 ATail lights, trailer lights (tail lights),
parking lights, outer foot lights
20 A/C IG 10 A Air conditioning system
21 SEAT-HTR 20 A Seat heaters
22 PANEL 7.5 AInstrument panel lights, glove box
light, ashtray, accessory meter,
audio system, rear view monitor,
navigation system, rear seat enter-
tainment system, gauges and
meters, air conditioning system
23 ACC 7.5 AAccessory meter, audio system,
rear seat entertainment system,
rear view monitor, navigation sys-
tem, back-up lights, trailer lights
(back-up lights), multiplex commu-
nication system, power outlet, out-
side rear view mirror
24 BK/UP LP 10 A Back-up light, gauges and meters
25 CIG 15 A Cigarette lighter
26 POWER No.1 30 A Power windows, power back win-
dow
FuseAmpereCircuit

586 5-2. Steps to take in an emergency
The engine has cooled down sufficiently.
The engine coolant temperature gauge indicates C.
Check the engine coolant level.
Look for obvious coolant leaks from the radiator, hoses and
under the vehicle.
Note that water draining from the air conditioning is normal if it has
been used.
Add engine coolant if required.
Water can be used in an emer-
gency if engine coolant is
unavailable. ( P. 609)
Have the vehicle checked at your nearest Toyota dealer as soon as
possible.