air condition TOYOTA TUNDRA 2008 2.G Service Manual

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
“AUTO” button
For automatic operation of the air condi-
tioning, press the “AUTO” button. The
“AUTO” button will turn on, indicating that
the automatic operation mode has been
selected.
In the automatic operation mode, the air
conditioning selects the most suitable fan
speed, air flow, air intake and on −off of
the air conditioning according to the tem-
perature.
When you press the “AUTO” button with
the air intake mode at FRESH, internal
circulation may be applied for maximum
cooling.
You may use manual controls if you want
to select your own settings.
Fan speed selector
Turn the knob to adjust the fan speed—to
the right to increase, to the left to de-
crease.
In automatic operation, you do not have
to adjust the fan speed unless you desire
another fan speed mode. “DUAL” button
Push the button to change the mode of
the temperature setting.
With the indicator on—
Individual temper-
ature setting for driver and front passen-
ger
With the indicator off— Simultaneous
temperature setting for driver and front
passenger
Temperature selectors
Turn the knob to adjust the tempera-
ture—to the right to warm, to the left to
cool.
“LO” appears when you adjust to maxi-
mum cooling, and “HI” appears when you
adjust to maximum warming.
—“TEMP” knob
With the “DUAL” button indicator on—This
knob changes the temperature on the driv-
er side only.
With the “DUAL” button indicator off—This
knob changes the temperature on the driv-
er side and front passenger side simulta-
neously. This function will be cancelled
when the “PASS TEMP” knob is turned. —“PASS TEMP” knob
This knob changes the temperature on the
front passenger side only.
“OFF” button
Push the button to turn off the air condi-
tioning system.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
XS19016a
Air flow selector
Turn the knob to select the vents used for
air flow.
In automatic operation, you do not have
to select the air flow unless you desire
another air flow mode.
1. Panel— Air flows mainly from the in-
strument panel vents and the rear
vents.
2. Bilevel— Air flows from both the floor
vents, the instrument panel vents and
the rear vents.
3. Floor— Air flows mainly from the floor
vents. 4. Floor/Windshield—
Air flows mainly
from the floor vents and windshield
vents.
Windshield air flow button
When this button is pressed, air flows
mainly from the windshield vents.
Pressing the button once again returns the
air flow mode to the last one used.
Pressing the windshield button turns on
the defroster −linked air conditioning. At
this time, the air conditioning turns on
regardless of the “A/C” button indicator
comes on or goes off. This is not a mal-
function. This is to clean up the front view
more quickly.
For details about air flow selector settings,
see “Air flow selector settings” described
below.
XS19015a
Air intake selector
Press the button to select the air source.
1. RECIRCULATE (indicator light is on)—
Recirculates the air inside the vehicle.
2. FRESH (indicator light is off)—Draws
outside air into the system.
To prevent fogging up of the windshield,
the air intake mode may change automati-
cally to FRESH depending on the condi-
tion of the air conditioning system.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
“A/C” button
To turn on the air conditioning, press the
“A/C” button. The “A/C” button indicator
will come on. To turn the air conditioning
off, press the button again.
If the “A/C” button indicator flashes, there
is a problem in the air conditioning system
and the air conditioning automatically
shuts off. If this happens, take your ve-
hicle to a Toyota dealer for service.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
:Independent setting
To cool off your Toyota after it has
been parked in the hot sun, drive with
the windows open for a few minutes.
This vents the hot air, allowing the air
conditioning to cool the interior more
quickly.
Make sure the air intake grilles in front
of the windshield are not blocked (by
leaves or snow, for example).
On humid days, do not blow cold air
on the windshield. The windshield could
fog up because of the difference in air
temperature on the inside and outside
of windshield.
Keep the area under the front seats
clear to allow air to circulate through-
out the vehicle.
On cold days, set the fan speed to
high for a minute to help clear the
intake ducts of snow or moisture. This
can reduce the amount of fogging on
the windows.
When driving on dusty roads, close all
windows. If dust thrown up by the ve-
hicle is still drawn into the vehicle after
closing the windows, it is recommended
that the air intake selector be set to
FRESH and the fan speed to any set-
ting except off.
—Air flow selector settings —Operating tips
XS19027a
∗
∗
∗: Crew Max models
∗ ∗

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
If following another vehicle on a dusty
road, or driving in windy and dusty
conditions, it is recommended that the
air intake selector be temporarily set to
RECIRCULATE, which will close off the
outside passage and prevent outside
air and dust from entering the vehicle
interior. Heating
For best results, set controls to:
For automatic operation—
Press in the “AUTO” button.
Temperature— To the desired
temperature
Air intake—FRESH (outside air)
Air conditioning—OFF
For manual operation—
Fan speed— To the desired fan speed
Temperature— Towards red zone
Air intake—FRESH (outside air)
Air flow—FLOOR
Air conditioning—OFF
For quick heating, select recirculated
air for a few minutes. To keep the
windows from fogging, select fresh af-
ter the vehicle interior has been
warmed.
Press the “A/C” button on for dehumidi-
fied heating.
Choose floor/windshield air flow to heat
the vehicle interior while defrosting or
defogging the windshield. Air conditioning
For best results, set controls to:
For automatic operation—
Press in the “AUTO” button.
Temperature— To the desired
temperature
Air intake—FRESH (outside air)
Air conditioning—ON
For manual operation—
Fan speed— To the desired fan speed
Temperature— Towards blue zone
Air intake—FRESH (outside air)
Air flow—PANEL
Air conditioning—ON
For quick cooling, select recirculated
air for a few minutes.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Ventilation
For best results, set controls to:
For automatic operation—
Press in the “AUTO” button.
Temperature— Towards low temperature
Air intake—FRESH (outside air)
Air conditioning—OFF
For manual operation—
Fan speed— To the desired fan speed
Temperature— Towards blue zone
Air intake—FRESH (outside air)
Air flow—PANEL
Air conditioning—OFF
Defogging and defrosting
—The inside of the windshield
For best results, set controls to:
For automatic operation—
Temperature— Towards high temperature
to heat; low temperature
to cool
Air intake—FRESH (outside air)
Air flow—WINDSHIELD
For manual operation—
Fan speed— To the desired fan speed
Temperature— Towards high temperature
to heat; low temperature
to cool
Air intake—FRESH (outside air)
Air flow—WINDSHIELD
Pressing the windshield button turns on
the defroster −linked air conditioning. At
this time, the air conditioning turns on
regardless of the “A/C” button indicator
comes on or goes off. This is not a mal-
function. This is to clean up the front view
more quickly.
On humid days, do not blow cold air
on the windshield—the difference be-
tween the outside and inside tempera-
tures could make the fogging worse.
—The outside of the windshield
For best results, set controls to:
For automatic operation—
Temperature— Towards high temperature
Air intake—FRESH (outside air)
Air flow—WINDSHIELD
For manual operation—
Fan speed— To the desired fan speed
Temperature— Towards high temperature
Air intake—FRESH (outside air)
Air flow—WINDSHIELD
Pressing the windshield button turns on
the defroster −linked air conditioning. At
this time, the air conditioning turns on
regardless of the “A/C” button indicator
comes on or goes off. This is not a mal-
function. This is to clean up the front view
more quickly.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Air conditioning filter—
XS19017
The air conditioning filter information
label is placed inside of the glove box
as shown and indicates that a filter has
been installed.
The air conditioning filter prevents dust
from entering the vehicle through the air
conditioning vent.
XS19007
The air conditioning filter is behind the
glove box. The air conditioning filter may clog af-
ter long use. The filter may need to be
replaced if the air flow of the air condi-
tioning and heater experiences extreme
reductions in operating efficiency, or if
the windows begin to fog up easily.
To maintain the air conditioning efficiency,
inspect and replace the air conditioning
filter according to the maintenance
schedule. In dusty areas or areas with
heavy traffic flow, such as inner city or
desert areas, early replacement may be
required. (For scheduled maintenance
information, please refer to the “Scheduled
Maintenance Guide” or “Owner ’s Manual
Supplement.”)
—Checking and replacing the
air conditioning filter

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
XS10004e
The outside temperature display and
cruise information display indicates the
following information.
Every time you push the “INFO” button,
the display toggles through this infor-
mation.
1. Outside temperature
2. Average fuel consumption
3. Instantaneous fuel consumption
4. Driving range
5. Display off
The displayed values in the cruise infor-
mation display indicate general driving
conditions. Accuracy varies with driving
habits and road conditions.
To set the unit, push the “SETUP US/M”
button until the desired unit display ap-
pears.
When the engine switch is on, the last
previously used mode displayed just be-
fore the engine switch is off will appear. 1. Outside temperature (“OUTSIDE
F”
or “OUTSIDE C”)
The outside temperature display indicates
the outside air temperature.
The displayed temperature ranges from
− 40 F ( −40 C) up to 122 F (50 C).
If an abnormality exists in the connection
of the outside air temperature sensor,
“ −−− F” (“ −−−C”) will appear on the dis-
play. If “ −−−F” (“ −−−C”) appears on the
display, contact your Toyota dealer.
There may be a case that “−−− F”
(“−−− C”) appears momentarily when the
engine switch is quickly turned to the
“ON” position. It is normal if it goes out
soon.
2. Average fuel consumption (“AVG MPG” or “AVG L/100 km”)
Average fuel consumption is calculated
and displayed based on total driving
distance and total fuel consumption
with the engine running.
The displayed value is updated about ev-
ery 10 seconds.
To reset the calculation, push the
“SELECT RESET” button about 2 second.
—Outside temperature and
cruise information display

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Inserting inappropriate or badly fit-
ting plugs into the power outlet.
NOTICE
To prevent the battery from being
discharged, turn off all the vehicle’s
electronic equipment and accesso-
ries, such as the headlights, fog
lights and air conditioning, when
electrical appliances that consume
in excess of 100W are used contin-
uously for long periods of time.
 To prevent any damage caused by
heat, do not use any electrical ap-
pliances that give off intense heat
such as toasters, in any locations
including the internal or external
trim, seats and deck.
 Do not use any electrical ap-
pliances, which are easily affected
by vibration or heat, inside the ve-
hicle. Vibration while driving, or the
heat of the sun while parking, may
result in damage to those electrical
appliances.
Keep the lid closed when the power
outlet is not in use. Do not insert
any items other than appropriate
plugs, as this may cause electrical
failure or short circuits.
 After inserting a plug, gently close
the power outlet lid. Failure to do
so may cause damage to the plug.
 If any electrical appliances are to
be used while driving, securely fas-
ten both the appliances and their
cables to prevent them from falling
or getting caught any of the power-
train components.
 Do not use plug adaptors to con-
nect too many plugs to the power
outlet.
 If the power outlet is loose when an
electrical appliance plug is con-
nected, replace the outlet. Contact
a Toyota dealer for any necessary
replacements.If the power outlet gets dirty, turn
the main switch off and use a soft,
clean, drywet cloth to wipe it gent-
ly. Do not use any cleansing materi-
als, such as organic solvents, wax,
or compound cleaners, as these
may damage the power outlet or
cause it to malfunction.
 Keep the power outlet free from
dust and foreign materials and
clean it regularly.
The power outlet is not designed for
the following electric appliances even
though their power consumption is un-
der 115 VAC/100W. These appliances
may not operate properly.
Appliances with high initial peak watt-
age: cathode− ray tube type televisions,
compressor −driven refrigerators, electric
pumps, electric tools, etc.
Measuring devices which process pre-
cise data: medical equipment, measur-
ing instruments, etc.
Other appliances requiring an extremely
stable power supply: microcomputer −
controlled electric blankets, touch sen-
sor lamps, etc.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
The amount of engine oil consumed de-
pends on the viscosity of the oil, the
quality of the oil and the conditions the
vehicle is driven under.
More oil is consumed by high −speed driv-
ing and frequent acceleration and decel-
eration.
A new engine consumes more oil, since
its pistons, piston rings and cylinder walls
have not become conditioned.
When judging the amount of oil con-
sumption, note that the oil may become
diluted and make it difficult to judge
the true level accurately.
As an example, if a vehicle is used for
repeated short trips, and consumes a nor-
mal amount of oil, the dipstick may not
show any drop in the oil level at all, even
after 1000 km (600 miles) or more. This
is because the oil is gradually becoming
diluted with fuel or moisture, making it
appear that the oil level has not changed.
The diluting ingredients evaporate out
when the vehicle is then driven at high
speeds, as on an expressway, making it
appear that oil is excessively consumed
after driving at high speeds. IMPORTANCE OF ENGINE OIL LEVEL
CHECK
One of the most important points in prop-
er vehicle maintenance is to keep the en-
gine oil at the optimum level so that oil
function will not be impaired. Therefore, it
is essential that the oil level be checked
regularly. Toyota recommends that the oil
level be checked every time you refuel
the vehicle.
NOTICE
Failure to check the oil level regularly
could lead to serious engine trouble
due to insufficient oil.
For detailed information on oil level check,
see “Checking the engine oil level” on
page 548 in Section 7
−2.
CY20008a
Your engine is fitted with iridiumtipped
spark plugs.
NOTICE
Use only iridiumtipped spark plugs.
Do not adjust gaps for engine perfor-
mance smooth driveability.
Iridiumtipped spark plugs [4.7
L V8 (2UZFE) engine]