2008 TOYOTA TUNDRA Owners Manual

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
The rear seat belt buckles can be
stowed when not in use.
Seat belt buckles must be stowed before
you fold the seatback. If your seat belts cannot be fastened se-
curely because they are not long enough,
a personalized seat belt extender is avail-
able from your Toyota dealer free of
charge.
Please contact your local Toyota dealer so
that the dealer can order the proper re-
quired length for the extender. Bring the
heaviest coat you expect to wear for prop-
er measurement and selection of length.
Additional ordering information is available
at your Toyota dealer.
CAUTION
When using the seat belt extender,
observe the following precautions.
Failure to follow these instructions
could reduce the effectiveness of the
seat belt restraint system in case of
an accident, increasing the chance of
death or serious injury.
Remember that the extender pro-
vided for you may not be safe when
used on a different vehicle, for
another person, or at a different
seating position than the one origi-
nally intended.
XS13127
If the seat belt extender has been
connected to the driver ’s seat belt
buckle without the driver actually
wearing the seat belt, the SRS driv-
er ’s airbag system will judge that
the driver is wearing it. In this
case, the driver ’s airbag may not
activate correctly, causing death or
serious injury in the event of colli-
sion. Be sure to wear the seat belt
with the seat belt extender.
—Seat belt extender

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Make sure the passenger airbag on
off indicator light indicates “ON”
when using the seat belt extender
for the front passenger seat. If the
indicator light indicates “OFF”, dis-
connect the extender tongue from
the seat belt buckle, then reconnect
the seat belt. Reconnect the seat
belt extender after making sure the
indicator light indicates “ON”. If
you use the seat belt extender
while the indicator light indicates
“OFF”, the front passenger airbag
and side airbag on the front pas-
senger side may not activate cor-
rectly, which could cause death or
serious injury in the event of colli-
sion.
Do not use the seat belt extender
if it is not absolutely necessary.
Do not use the seat belt extender
when installing a child restraint
system on the front or rear passen-
ger seat. If installing a child re-
straint system with the seat belt ex-
tender connected to the seat belt,
the seat belt will not securely hold
the child restraint system, which
could cause death or serious injury
to the child or other passengers in
the event of collision.
XS13128
To connect the extender to the seat
belt, insert the tab into the seat belt
buckle so that the “PRESS” signs on
the buckle release buttons of the ex-
tender and the seat belt are both facing
outward as shown.
You will hear a click when the tab locks
into the buckle.
When releasing the seat belt, press on
the buckle release button on the extender,
not on the seat belt. This helps prevent
damage to the vehicle interior and extend-
er itself.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
As far as the seat belt extender on the
front passenger side is concerned, do not
fail to disconnect the extender from the
seat belt after the above operation in or-
der to activate the front passenger airbag
correctly when getting into the vehicle
next time.
When not in use, remove the extender
and store in the vehicle for future use.
CAUTION
After inserting the tab, make sure
the tab and buckle are locked and
that the lap and shoulder portions
of the belt and the seat belt extend-
er are not twisted.
Do not insert coins, clips, etc. in
the buckle as this may prevent you
from properly latching the tab and
buckle.
If the seat belt does not function
normally, immediately contact your
Toyota dealer. Do not use the seat
until the seat belt is fixed, because
it cannot protect an adult occupant
or your child from death or serious
injury.
XS13020
The driver and front passenger seat
belt pretensioners are designed to be
activated in response to a severe fron-
tal impact. On vehicles equipped with
curtain shield airbags, the pretensioners
are also activated during vehicle roll
over.
When the sensor detects a severe frontal
impact or a vehicle roll over, the front
seat belts are quickly drawn back by the
retractors so that the belts snugly restrain
the occupants. The front passenger ’s seat belt pretension-
er will not activate if no passenger is
detected in the front passenger seat by
the front passenger occupant classification
system. However, the front passenger’s
seat belt pretensioner may activate if lug-
gage is put on the seat, or the seat belt
is buckled up regardless of the presence
of an occupant in the seat. (As for the
front passenger occupant classification
system, see “—Front pass
enger occupant
classification system” on page 105 in this
Section.)
The seat belt pretensioners and SRS air-
bags may not operate together in all colli-
sions.
—Seat belt pretensioners

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
XS13132a
The seat belt pretensioners will not oper-
ate in a vehicle rollover if the “RSCA
OFF” indicator light is on. For details, see
“—Roll sensing of curtain shield airbags
off switch” on page 114 in this Section.
XS13139
The seat belt pretensioner system con-
sists mainly of the following components
and their locations are shown in the il-
lustration.
1. Front airbag sensors
2. Passenger airbag on −off indicator light
3. Front passenger occupant classification ECU
4. Load sensor
5. Seat belt pretensioner assemblies
6. Front passenger ’s seat belt buckle switch
7. Airbag sensor assembly 8. SRS warning light
The seat belt pretensioners are controlled
by the airbag sensor assembly. The airbag
sensor assembly consists of a safing sen-
sor and airbag sensor.
When the seat belt pretensioners are acti-
vated, an operating noise may be heard
and a small amount of non −toxic gas may
be released. This does not indicate that
a fire is occurring. This gas is normally
harmless.
Once the seat belt pretensioners have
been activated, the seat belt retractors
remain locked.
CAUTION
Do not modify, remove, strike or
open the seat belt pretensioner as-
semblies, airbag sensor or sur-
rounding area or wiring. Failure to
follow these instructions may pre-
vent the seat belt pretensioners
from activating correctly, cause sud-
den operation of the system or dis-
able the system, which could result
in death or serious injury. Consult
your Toyota dealer about any repair
and modification.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Do not modify or change the sus-
pension system. Such changes may
cause the driver airbag, front pas-
senger airbag, seat belt pretension-
ers and curtain shield airbags to
inflate accidentally, which could re-
sult in death or serious injury.
Do not use tires or wheels other
than the manufacturer ’s recom-
mended size. Such a use may cause
the driver airbag, front passenger
airbag, seat belt pretensioners and
curtain shield airbags to inflate ac-
cidentally, which could result in
death or serious injury. For details,
see “Checking and replacing tires”
on page 556 in Section 72.
NOTICE
Do not perform any of the following
changes without consulting your
Toyota dealer. Such changes can
interfere with proper operation of the
seat belt pretensioners in some
cases.
Installation of electronic devices
such as a mobile twoway radio,
cassette tape player or compact
disc player
 Repairs on or near the front seat
belt pretensioner assemblies
 Modification of the suspension sys-
tem
 Modification of the front end struc-
ture
 Attachment of a grille guard (bull
bar, kangaroo bar, etc.), snowplow,
winches or any other equipment to
the front end
 Repairs made on or near the front
fenders, front end structure or con-
sole
XS13135a
This indicator comes on when the en-
gine switch is turned to the “ON” posi-
tion. It goes off after about 6 seconds.
This means the seat belt pretensioners
are operating properly.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
This warning light system monitors the
airbag sensor assembly, front airbag
sensors, side and curtain shield airbag
sensors, curtain shield airbag sensors,
driver ’s seat position sensor, driver ’s seat
belt buckle switch, front passenger
occupant classification system
∗, passenger
airbag off switch, passenger airbag on −off
indicator light, seat belt pretensioner
assemblies, inflators, “RSCA OFF”
indicator light, interconnecting wiring and
power sources. (For details, see “Service
reminder indicators and warning buzzers”
on page 197 in Section 1 −6.)
∗: The front passenger occupant classifica-
tion system includes the front passenger
occupant classification ECU, load sensor,
front passenger ’s seat belt buckle switch.
If any of the following conditions occurs,
this indicates a malfunction of the airbags
or seat belt pretensioners. Contact your
Toyota dealer as soon as possible.
The light does not come on when the
engine switch is turned to the “ON”
position or remains on for more than
6 seconds.
The light comes on while driving.
If any seat belt does not retract or can
not be pulled out due to a malfunction
or activation of the relevant seat belt
pretensioner.
The seat belt pretensioner assembly or
surrounding area has been damaged.
XS13121
In the following cases, contact your Toyota
dealer as soon as possible:
The front of the vehicle (shaded in the
illustration) was involved in an accident
that was not severe enough to cause
the seat belt pretensioners to operate.
Either seat belt pretensioner assembly
or surrounding area is scratched,
cracked, or otherwise damaged.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
XS13130a
The SRS (Supplemental Restraint Sys-
tem) front airbags are designed to pro-
vide further protection for the driver
and right front passenger in addition to
the primary safety protection provided
by the seat belts.
Your vehicle is equipped with “ADVANCED
AIRBAGS” designed based on US motor
vehicle safety standards (FMVSS208). The
airbag system controls airbag deployment
power for the driver and right front pas-
senger. The driver airbag system consists
of the driver seat’s position sensor etc.
The front passenger ’s airbag system con-
sists of the front passenger occupant clas-
sification sensor etc. Vehicles with bench seats—The SRS air-
bags are designed to protect the driver
and right front passenger and they are not
designed to protect an occupant in the
front center seating position.
In response to a severe frontal impact,
the SRS front airbags work with the seat
belts to help reduce injury by inflating.
The SRS front airbags help reduce injuries
mainly to the driver’s or front passenger’s
head or chest caused by hitting the ve-
hicle interior.
The SRS front passenger airbag will not
activate if there is no passenger sitting in
the right front passenger seat. However,
the front passenger airbag may deploy if
luggage is put in the seat. (As for the
front passenger occupant classification
system, see “—Front pass
enger occupant
classification system” on page 105 in this
Section.)
Always wear your seat belt properly.
CAUTION
The SRS front airbag system is de-
signed only as a supplement to the
primary protection of the driver and
front passenger seat belt systems.
The driver and front passenger can
be killed or seriously injured by the
inflating airbags if they do not wear
the available seat belts properly.
During sudden braking just before
a collision, an unrestrained driver
or front passenger can move for-
ward into direct contact with or
close proximity to the airbag which
may then deploy during the colli-
sion. To ensure maximum protection
in an accident, the driver and all
passengers in the vehicle must
wear their seat belts properly. Wear-
ing a seat belt properly during an
accident reduces the chances of
death or serious injury or being
thrown out of the vehicle. For in-
structions and precautions concern-
ing the seat belt system, see “Seat
belts” on page 66 in this Section.
SRS airbags—
—SRS driver airbag and front
passenger airbag (Regular cab
models)

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Improperly seated and/or restrained
infants and children can be killed
or seriously injured by the
deploying airbags. An infant or
child who is too small to use a seat
belt should be properly secured
using a child restraint system. For
instructions concerning the
installation of a child restraint
system, see “Child restraint” on
page 115 in this Section.
XS13218
Indicator light
The passenger airbag system is
equipped with a off switch and indica-
tor light. Turning the passenger airbag
off switch clockwise to the “AUTO”
position makes the front passenger air-
bag system operational. To disable the
front passenger airbag system, turn the
off switch counterclockwise to the
“OFF” position and remove the key. The
“OFF” indicator light will come on
when the front passenger airbag system
has been disabled.
See “—Passenger airbag off switch” on
page 86 in this Section for detail.
CAUTION
Do not turn off the passenger air-
bag off switch except when a mem-
ber of a passenger risk group iden-
tified in TABLE 1 is occupying the
right front passenger seating posi-
tion.
When the passenger airbag off
switch is turned off, the front pas-
senger airbag will not inflate in a
collision and turning off the front
passenger airbag can reduce the
occupant protection which your ve-
hicle safety systems can provide to
you in certain accidents and in-
crease the likelihood of death or
serious injuries.