2000 TOYOTA TUNDRA sensor

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CAUTION

After inserting the tab, make sure
the tab and buckle are locked and
that the seat belt extender is 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. It cannot
protect an adult occupant or your
child from injury.
ÐFront seat belt pretensioners
The driver and front passenger 's seat
belt pretensioners are designed to be
activated in response to a severe fron-
tal impact.
When the airbag sensor detects the shock
of a severe frontal impact, the front seat
belt is quickly drawn back in by the re-
tractor so that the belt snugly restrains
the front seat occupants.
The seat belt pretensioners are activated
even with no passenger in the front seat.This indicator comes on when the igni-
tion key is turned to the ACCº or
ONº position. It goes off after about
6 seconds. This means the front seat
belt pretensioners are operating proper-
ly.
This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, seat belt pretensioner assemblies,
warning light, interconnecting wiring and
power sources. (For details, see Service
reminder indicators and warning buzzersº
in Chapter 1- 5.)
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The seat belt pretensioner system mainly
consists of the following components and
their locations are shown in the illustra-
tion.1. Front airbag sensors
2. SRS warning light
3. Seat belt pretensioner assemblies
4. Airbag sensor assembly
The seat belt pretensioner is controlled by
the airbag sensor assembly. The airbag
sensor assembly consists of a safing sen-
sor and airbag sensor. When a seat belt pretensioner is acti-
vated, an operating noise may be heard
and a small amount of smoke- like gas
may be released. This gas is harmless
and does not indicate that a fire is occur-
ring.
Once the seat belt pretensioner has been
activated, the seat belt retractor remains
locked.
CAUTION
Do not modify, remove, strike or open
the front seat belt pretensioner as-
semblies, airbag sensor or surround-
ing area or wiring. Doing any of
these may cause sudden operation of
the front seat belt pretensioners or
disable the system, which could re-
sult in death or serious personal inju-
ry.
Failure to follow these instructions
can result in death or serious inju-
ries.
NOTICE
Do not perform any of the following
changes without consulting yourToyota dealer. Such changes caninterfere with proper operation of theseat belt pretensioners in somecases.

Installation of electronic items suchas a mobile two- way radio, cassettetape player or compact disc player

Repairs on or near the front seatbelt pretensioner assemblies

Modification of the suspension sys-tem

Modification of the front end struc-ture

Attachment of a grille guard (bullbar, kangaroo bar, etc.), snowplow,winches or any other equipment tothe front end

Repairs made on or near the frontfenders, front end structure or con-sole
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This indicator comes on when the igni-
tion key is turned to the ACCº or
ONº position. It goes off after about
6 seconds. This means the SRS airbags
are operating properly.
This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, inflators, warning light, interconnect-
ing wiring and power sources. (For details,
see Service reminder indicators and
warning buzzersº in Chapter 1- 5.)
TABLE 1: A PASSENGER RISK GROUP
Infant. An infant (less than 1 year old) who must ride in the front seat because:

Vehicle has no rear seat;

Vehicle has a rear seat too small to accommodate a rear- facing infant seat;
or

The infant has a medical condition which, according to the infant's physician,
makes it necessary for the infant to ride in the front seat so that the driver
can constantly monitor the child's condition.
Child age 1 to 12. A child age 1 to 12 must ride in the front seat because:

Vehicle has no rear seat:

Although children ages 1 to 12 ride in the rear seat(s) whenever possible,
children ages 1 to 12 sometimes must ride in the front because no space is
available in the rear seat(s) of vehicle; or

The child has a medical condition which, according to the child's physician,
makes it necessary for the child to ride in the front seat so that the driver can
constantly monitor the child's condition.
Medical condition. A passenger has a medical condition which according to his
or her physician:

Causes the passenger airbag to pose a special risk for the passenger: and

Makes the potential harm from the passenger airbag in a crash greater than the
potential harm from turning off the airbag and allowing the passenger, even if
belted, to hit the dashboard, or windshield in a crash.
For more detailed information concerning about the passenger risk group, please
contact NHTSA at 1- 800- 424- 9393 or Transport Canada at 1- 800- 333- 0371.
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The SRS airbag system is designed to
activate in response to a severe frontal
impact within the shaded area between
the arrows in the illustration.
There may be the case that the SRS air-
bags will not activate with such an impact
in which the occupant wearing the seat
belt correctly would not get serious injury.
The SRS airbags will deploy if the severi-
ty of the impact is above the designed
threshold level, comparable to an approxi-
mate 25 km/h (15 mph) collision when
impacting straight into a fixed barrier that
does not move or deform.If the severity of the impact is below the
above threshold level, the SRS airbags
may not deploy.
However, this threshold velocity will be
considerably higher if the vehicle strikes
an object, such as a parked vehicle or
sign pole, which can move or deform on
impact, or if it is involved in an underride
collision (e.g. a collision in which the nose
of the vehicle underridesº, or goes under,
the bed of a truck, etc.).
It is possible with collision severity at the
marginal level of airbag sensor detection
and activation that only one of your ve-
hicle's two airbags will deploy.
For the safety of all occupants, be sure
to always wear seat belts.
Collision from the rear
Collision from the side Vehicle rollover
The SRS airbags are not designed to
inflate if the vehicle is subjected to a
side or rear impact, if it rolls over, or
if it is involved in a low- speed frontal
collision.
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Hitting a curb,
edge of pavement
or hard materialFalling into or
jumping over a
deep hole
Landing hard or vehicle falling
The SRS airbags may deploy if a seri-
ous impact occurs to the underside of
your vehicle. Some examples are shown
in the illustration.The SRS airbag system mainly consists of
the following components and their loca-
tions are shown in the illustration. 1. Front airbag sensors
2. SRS warning light
3. Airbag module for passenger (airbag and inflator)
4. Passenger airbag manual on- off switch
5. Airbag sensor assembly
6. Airbag module for driver (airbag and inflator)
The airbag sensor assembly consists of a
safing sensor and airbag sensor. In a severe frontal impact, sensors detect
deceleration and the system triggers the
airbag inflators. Then a chemical reaction
in the inflators momentarily fills the air-
bags with non- toxic gas to help restrain
the forward motion of the occupants.
When the airbags inflate, they produce a
fairly loud noise and release some smoke
and residue along with non- toxic gas. This
does not indicate a fire. This gas is nor-
mally harmless, however, for those who
have delicate skin, it may cause minor
skin irritation. Be sure to wash off any
residue as soon as possible to prevent
minor skin irritation.
Deployment of the airbags happens in a
fraction of a second, so the airbags must
inflate with considerable force. While the
system is desi
gned to reduce serious inju-
ries, it may also cause minor burns or
abrasions and swellings.
Parts of the airbag module (steering wheel
hub, dashboard) may be hot for several
minutes, but the airbags themselves will
not be hot. The airbags are designed to
inflate only once.
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Do not modify or remove any wir-
ing. Do not modify, remove, strike
or open any components such as
the steering wheel pad, steering
wheel, column cover, front passen-
ger airbag cover, front passenger
airbag or airbag sensor assembly.
Doing any of these may cause sud-
den SRS airbag inflation or disable
the system, which could result in
death or serious injury.
Failure to follow these instructions
can result in death or serious inju-
ries.NOTICE
Do not perform any of the following changes without consulting yourToyota dealer. Such changes caninterfere with proper operation of the
SRS airbag system in some cases.

Installation of electronic items suchas a mobile two- way radio, cassette
tape player or compact disc player

Modification of the suspension sys-tem

Modification of the front end struc-ture

Attachment of a grille guard (bullbar, kangaroo bar, etc.), snowplow,
winches or any other equipment tothe front end

Repairs made on or near the frontfenders, front end structure, con-sole, steering column, steering
wheel or dashboard near the frontpassenger airbag
This SRS airbag system has a service
reminder indicator to inform the driver of
operating problems. If either of the follow-
ing conditions occurs, this indicates a
malfunction of the airbags. Contact your
Toyota dealer as soon as possible to
service the vehicle.

The light does not come on when the
ignition key is turned to the ACCº or
ONº position, or remains on.

The light comes on while driving.
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(a) Brake System Warning Light
This light has the following functions:
Parking brake reminder
If this light is on, make sure the parking
brake is fully released. The light should
go off.
Low brake fluid level warning
If this light comes on and stays on while
you are driving, slow down and pull off
the road. Then stop the vehicle carefully.
Remember that stopping distance and ped-
al effort may be increased. There may be
a problem somewhere in the brake sys-
tem. Check the fluid level of the see-
through reservoir.
To make sure the parking brake has not
caused the warning light to come on,
check to see that the parking brake is
fully released.
If the brake fluid level is low...
At a safe place, test your brakes by start-
ing and stopping.

If you judge that the brakes still work
adequately, drive cautiously to your
nearest dealer or shop for repairs.

If the brakes are not working, have the
vehicle towed in for repairs. (For tow-
ing information, see Part 4.)
CAUTION
It is dangerous to continue driving
normally when the brake fluid level is
low.
If the brake fluid level is correct...
Have the warning system checked by your
Toyota dealer.
(b) Driver's Seat Belt Reminder Lightand Buzzer
This light and buzzer remind you to
buckle up the driver's seat belt.
Once the ignition key is turned to ONº or
STARTº, the reminder light flashes and
buzzer sounds if the driver 's seat belt is
not fastened. Unless the driver fastens the
belt, the light keeps flashing and the
buzzer stops after about 4 to 8 seconds.
(c) Front Passenger 's Seat Belt Re- minder Light
This light reminds you to buckle up the
front passenger 's seat belt. Once the ignition key is turned to ONº or
STARTº, the reminder light flashes if a
passenger sits in the front passenger seat
and does not fasten the seat belt. Unless
the front passenger fastens the belt, the
light keeps flashing.
If luggage load is placed on the front
passenger seat, depending on its weight
and how it is placed on the seat, built- in
sensors in the seat cushion may detect
the pressure, causing the reminder light to
keep flashing.
(d) Discharge Warning Light
This light warns that the battery is being
discharged.
If it comes on while you are driving, there
is a problem somewhere in the charging
system.
The engine ignition will continue to oper-
ate, however, until the battery is dis-
charged. Turn off the air conditioning,
blower, radio, etc., and drive directly to
the nearest Toyota dealer or repair shop.
NOTICE
Do not continue driving if the engine
drive belt is broken or loose.
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(j) SRS Warning Light
This light will come on when the igni-
tion key is turned to the ACCº or
ONº position. After about 6 seconds,
the light will go off. This means the
system of the airbag and front seat belt
pretensioners are operating properly.
The warning light system monitors the air-
bag sensor assembly, front airbag sen-
sors, seat belt pretensioner assemblies,
inflators, warning light, interconnecting wir-
ing and power sources.
If either of the following conditions occurs,
this indicates a malfunction somewhere in
the parts monitored by the warning light
system. Contact your Toyota dealer as
soon as possible to service the vehicle.

The light does not come on when the
ignition key is turned to the ACCº or
ONº position or remains on.

The light comes on or flashes while
driving.(k) Unengaged Parkº Warning Light
(with automatic transmission and
front drive control lever)
This light warns that the transmission
Parkº mechanism is not engaged. If the
front drive control lever is in the Nº posi-
tion while the selector lever is in the Pº
position, the transmission will disengage
and the wheels will not lock.
CAUTION
To restore the park function, shift the
front drive control lever out of Nº,
or the vehicle can move.
(l) Automatic Transmission Fluid Tem- perature Warning Light
This light warns that the automatic trans-
mission fluid temperature is too high.
If this light comes on while you are driv-
ing, slow down and pull off the road. Stop
the vehicle at a safe place and put the
selector lever in Pº. With the engine id-
ling, wait until the light goes off. If the
light goes off, you may start the vehicle
again. If the light does not go off, call a
Toyota dealer or qualified repair shop for
assistance. (m) Low Windshield Washer Fluid Level
Warning Light (with daytime running
light system)
This light warns that the windshield wash-
er fluid level is too low. Add washer fluid
at your earliest opportunity. (For instruc-
tions, see Adding washer fluidº in Chapter
7- 3.)
(n) Key Reminder Buzzer
This buzzer reminds you to remove the
key when you open the driver 's door with
the ignition key in the ACCº or LOCKº
position.
(o) Four- wheel drive system warning buzzer
This buzzer reminds you that the transfer
mode is not selected correctly.
If the buzzer sounds when you shift the
transfer from 2WDº to 4HIº, 4LOº to
4HIº, 4HIº to 4LOº, or 4LOº to 2WDº
mode, follow the instructions in Four-
wheel drive systemº in Chapter 1- 6.
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