2008 TOYOTA TUNDRA four wheel drive

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
The “4LO” (low speed four−wheel drive)
indicator light comes on when the “4L”
mode is selected.
Use this for maximum power and traction.
Use “4L” position for climbing or descend-
ing steep hills, off −road driving, and hard
pulling in sand, mud or deep snow.
See “(c) Shifting procedure” for further in-
structions.
In this mode, the vehicle stability control
system is off. (See “Vehicle stability
control system” on page 250 in this
Section.) The A.D.D. can be engaged or disen-
gaged by the shifting operations de-
scribed in “(c) Shifting procedure”.
You should drive in four
−wheel drive for
at least 16 km (10 miles) each month.
This will assure that the front drive com-
ponents are lubricated. SHIFTING BETWEEN “2WD” AND “4H”
To shift from “2WD” to “4H”,
reduce the
vehicle speed to less than 100 km/h (62
mph) and turn the front drive control
switch knob fully clockwise.
When the ambient temperature is −15 C
(5.0 F) or lower, shifting must be per-
formed with the vehicle speed below 70
km/h (43 mph).
If the “4HI” (high speed four −wheel drive)
indicator light continues to blink when you
operate the front drive control switch knob
from the “2WD” to the “4H” position, this
reminds you that the transfer mode is not
securely in “4H” mode. Drive straight
ahead while accelerating or decelerating.
If the “4HI” (high speed four −wheel drive)
indicator light continues to blink and the
buzzer sounds when you operate the front
drive control switch knob from the “2WD”
to the “4H” position, this reminds you that
the transfer mode is not in “4H” mode.
Stop the vehicle or reduce the vehicle
speed to less than 100 km/h (62 mph).
(When the ambient temperature is −15 C
(5.0 F) or lower, speed needs to be re-
duced to below 70 km/h (43 mph).) Oper-
ate the switch knob again.
(b) A.D.D. (automatic
disconnecting differential) (c) Shifting procedure

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
CAUTION
Never operate the front drive control
switch knob if the wheels are slip-
ping. Stop the slipping or spinning
before operating.
To shift from “4H” to “2WD”, reduce the
vehicle speed to less than 100 km/h (62
mph) and turn the front drive control
switch knob fully counterclockwise.
When you operate the front drive control
switch knob from “4H” to “2WD” with the
vehicle speed at 100 km/h (62 mph) or
higher, the “4HI” indicator light continues
to blink and buzzer sounds. When the
switch knob is returned from “2WD” to
“4H”, the indicator light turns off and the
buzzer stops sounding.
If the “4HI” (high speed four −wheel drive)
indicator light continues to blink when you
operate the front drive control switch knob
from the “4H” to the “2WD” position, this
reminds you that the transfer mode is not
securely in “2WD” mode. Drive straight
ahead while accelerating or decelerating,
or drive forward or backward for a short
distance. If there is any malfunction within the
brake system, “4HI” or “4LO” indicator
light blinks and the transfer mode may not
be able to be shifted from “4H” to “2WD”.
If the indicator light continues to blink
even if doing so, contact your Toyota
dealer as soon as possible. There may be
a trouble in the four
−wheel drive system.
CAUTION
Never operate the front drive control
switch knob if the wheels are slip-
ping. Stop the slipping or spinning
before operating.
SHIFTING BETWEEN “4H” AND “4L”
To shift between “4H” and “4L”
1. Bring the vehicle to a complete stop with the brake pedal held down.
2. Shift the automatic transmission selec- tor lever into “N”.
3. To shift from “4H” to “4L”, push and turn the front drive control switch knob
fully clockwise.
To shift from “4L” to “4H”, turn the
front drive control switch knob counter-
clockwise. 4. Maintain this condition until the “4LO”
or “4HI” indicator light comes on.
If the “4LO” indicator light continues to
blink...
If this indicator light continues to blink
when you operate the front drive control
switch knob to the “4H” or “4L” position,
stop the vehicle completely, shift the auto-
matic transmission selector lever securely
into “N” and operate the switch knob
again.
INFORMATION
 If the engine coolant temperature is
too low the transfer mode may not
be able to be shifted. When the en-
gine is warmer operate the switch
knob again.
 If the automatic transmission selec-
tor lever is moved before the indi-
cator comes on, the transfer mode
may not be shifted completely. In
this case, stop the vehicle com-
pletely, return the automatic trans-
mission selector lever to “N” and
operate the switch knob again.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
If there is any malfunction in the brake
system or the engine, “4HI” or “4LO” indi-
cator light blinks and the transfer mode
may not be able to be shifted from “4H”
to “4L”.
If the indicator continues to blink even if
doing so, contact your Toyota dealer as
soon as possible. There may be a trouble
in the four−wheel drive system. The traction control system automatical-
ly helps prevent the spinning of the
rear wheels (twowheel drive models)
or 4 wheels (fourwheel drive models)
when the vehicle is started or acceler-
ated on slippery road surfaces.
When the engine switch is turned to the
“ON” position, the system automatically
turns on.
CAUTION
Under certain slippery road condi-
tions, full traction of the vehicle and
power to the rear wheels (twowheel
drive models) or 4 wheels (fourwheel
drive models) cannot be maintained,
even though the traction control sys-
tem is in operation. Do not drive the
vehicle at any speed or in maneuver-
ing conditions which may cause the
vehicle to lose traction control. In si-
tuations where the road surface is
covered with ice or snow, your ve-
hicle should be fitted with snow tires
or tire chains. Always drive at an ap-
propriate and cautious speed for the
present road conditions.
XS17004a
Ty p e A
XS17005a
Ty p e B
Traction control system

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
NORMAL DRIVING MODE
Leave the system on during ordinary
driving so that it can operate when
needed.
You may hear a sound in the engine
compartment for a few seconds when the
engine is started or just after the vehicle
begins to move. This means that the trac-
tion control system is in self−check mode,
but does not indicate a malfunction.
When the traction control system is oper-
ating, the following conditions occur:
The system controls the spinning of the
rear wheels (two −wheel drive models)
or 4 wheels (four −wheel drive models).
At this time, the slip indicator light
blinks.
You may feel vibration or noise in your
vehicle, caused by operation of the
brakes. This indicates the system is
functioning properly.
The slip indicator light comes on for a few
seconds when the engine switch is turned
to the “ON” position. If the indicator light
does not come on when the engine switch
is turned on, contact your Toyota dealer. The brake actuator temperature increases
during continuous operation of the follow-
ing systems under conditions such as on
slippery roads.
Traction control system
“AUTO LSD” system
If the brake actuator temperature becomes
too high while any of the systems is oper-
ating, a buzzer will start to sound intermit-
tently to indicate that the traction control
system can no l onger operate. In this
case, immediately stop your vehicle at a
safe place.
If the system continues to operate, the
buzzer sound changes from intermittent to
continuous. (The continuous buzzer
sounds for about 3 seconds.)
At this time, the slip indicator light comes
on and the traction control system tempo-
rarily stops operating in order to protect
the brake actuator. (Although the traction
control system does not operate, it is not
a problem to continue driving.) The sys-
tem is automatically restored after a short
time and the slip indicator light goes off.XS17010a
and only one of the rear wheels be-
gins to spin,which also may the rear
wheels.TRACTION CONTROL OFF MODE
(twowheel drive mode only)
When getting the vehicle out of mud or
snow, etc., and only one of the rear
wheels begins to spin, it may be benefi-
cial to turn off the traction control sys-
tem. This system which also controls
engine performance may interfere with
the process of freeing the rear wheels.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
CAUTION
Do not use the “AUTO LSD” system
in conditions other than the above. A
much greater steering effort and more
careful cornering control will be re-
quired.
XS17010a
Traction control off mode
XS17046
“AUTO LSD” mode
The “AUTO LSD” is activated under the
following conditions. At this time, the
“AUTO LSD”, slip indicator and “VSC
OFF” (“AUTO LSD” mode) lights will
come on.
The driving mode is set in the two −
wheel drive mode (In the four −wheel
drive mode, the system does not
work.)
Driving at a speed under 100 km/h (62
mph)
Traction control off mode or “AUTO
LSD” mode turns on.
Traction control off mode
To turn on the traction control off mode,
briefly push the “VSC OFF” switch.
Then, the “AUTO LSD” and slip indicator
lights will come on.
The following systems will be ready to be
activated:
“AUTO LSD” system
Vehicle stability control system
To turn off the traction control off mode,
briefly push the “VSC OFF” switch again
and the “AUTO LSD” and slip indicator
lights will go off.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
The vehicle stability control system au-
tomatically turns off, and the “VSC
OFF” indicator light is illuminated,
when the fourwheel drive mode is set.
The “VSC OFF” indicator light comes on
for a few seconds when the engine switch
is turned to the “ON” position, and then
turns off. If the four−wheel drive mode is
set, the indicator light is illuminated again.
XS17046
When getting the vehicle out of mud or
newly fallen snow, etc., it may be bene-
ficial to turn off the vehicle stability
control system. This system which also
controls engine performance interferes
with the process of freeing the rear
wheels (twowheel drive models).
To turn off the vehicle stability control
system: Push and hold the “VSC OFF”
switch for 3 seconds or more with the
vehicle stopped. The vehicle stability
control system turns off and the “AUTO
LSD” mode turns on.
The “AUTO LSD”, slip indicator and “VSC
OFF” lights will come on. When you push and hold the “VSC OFF”
switch for 3 seconds or more with the
vehicle stopped, the “AUTO LSD” mode
turns off and the “VSC OFF” mode turns
on.
After the indicator light turns off, the “VSC
OFF” and slip indicator lights will come
on.
“VSC OFF” mode can turn off the fol-
lowing systems:
Vehicle stability control system
Traction control system
“AUTO LSD” system (two
−wheel drive
mode)
Active traction control system (four −
wheel drive mode)
To turn on: Briefly push the “VSC OFF”
switch once again.
The “VSC OFF” and slip indicator lights
will go off.
If the engine is turned off while the “VSC
OFF” and slip indicator lights are on and
then restarted, the indicator lights will turn
off automatically.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Washing your vehicle or driving through
deep water may get the brakes wet. To
see whether they are wet, check that
there is no traffic near you, and then
press the pedal lightly. If you do not
feel a normal braking force, the brakes
are probably wet. To dry them, drive
the vehicle cautiously while lightly
pressing the brake pedal with the park-
ing brake applied. If they still do not
work safely, pull to the side of the road
and call a Toyota dealer for assistance.
Four−wheel drive models—Toyota rec-
ommends not using four −wheel drive on
dry hard− surfaced roads, because four −
wheel driving will cause unnecessary
noise and wear, and poor fuel econo-
my.
Four −wheel drive models—In cold tem-
peratures, noise may occur when driv-
ing in two −wheel drive before the trans-
fer is warmed up. Therefore, first drive
in four −wheel drive until the transfer is
warmed up.
CAUTION
Before driving off, make sure that
the parking brake is fully released
and the brake system warning light
(parking brake reminder light) is
off.
Do not leave your vehicle unat-
tended while the engine is running.
Do not rest your foot on the brake
pedal while driving. It can cause
dangerous overheating, needless
wear, and poor fuel economy.
To drive down a long or steep hill,
reduce your speed and downshift.
Remember, if you ride the brakes
excessively, they may overheat and
not work properly.
Be careful when accelerating, up-
shifting, downshifting or braking on
a slippery surface. Sudden accelera-
tion or engine braking, could cause
the vehicle to skid or spin.
Do not drive in excess of the speed
limit. Even if the legal speed limit
permits it, do not drive over 140
km/h (85 mph) unless your vehicle
has highspeed capability tires.
Driving over 140 km/h (85 mph) may
result in tire failure, loss of control
and possible injury. Be sure to con-
sult a tire dealer to determine
whether the tires on your vehicle
are highspeed capability tires or
not before driving at such speeds.
Do not continue normal driving
when the brakes are wet. If they are
wet, your vehicle will require a
longer stopping distance, and it
may pull to one side when the
brakes are applied. Also, the park-
ing brake will not hold the vehicle
securely.

483
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
GCWR, Towing capacity
kg (lb.)
Model code
∗ 7EngineCab typeDriving
systemBed type
GCWRTowing capacity
With towing packageWithout tow-ing packageWith towing packageWithout tow-ing package
GSK50L− TRADKA1GR−FE∗
1
Regular
2WD∗4Standard—4535 (10000)—2310 (5100)
GSK51L− THADKALong—4535 (10000)—2265 (5000)
UCK50L−TRADKA
2UZ−FE∗
2
2WD∗4Standard6120 (13500)5440 (12000)3855 (8500)3175 (7000)
UCK51L− THADKALong6120 (13500)5440 (12000)3810 (8400)3125 (6900)
UCK55L−TRADKA4WD∗
5Standard6120 (13500)5440 (12000)3715 (8200)3035 (6700)
UCK56L− THADKALong6120 (13500)5440 (12000)3670 (8100)2990 (6600)
USK50L−TRTDKA
3UR−FE∗
3
2WD∗4Standard7030 (15500)6350 (14000)4715 (10400)4035 (8900)6800 (15000)∗64490 (9900)∗6
USK51L− THTDKALong7255 (16000)6350 (14000)4895 (10800)3990 (8800)
USK55L−TRTDKA4WD∗
5Standard7030 (15500)6350 (14000)4580 (10100)3945 (8700)6800 (15000)∗64350 (9600)∗6
USK56L− THTDKALong7255 (16000)6350 (14000)4760 (10500)3900 (8600)
∗
1: 4.0 L V6 (1GR −FE) engine∗
2: 4.7 L V8 (2UZ −FE) engine∗
3: 5.7 L V8 (3UR −FE) engine∗
4:Two −wheel drive models∗
5: Four −wheel drive models∗
6: With P275/55R20 tires∗7: The model code is indicated on the Certification Label. See “Your Toyota’s identification” on page 455 in Section 2 for the Ce rtifica-
tion Label location.