2008 TOYOTA TUNDRA brake sensor

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
In order to be effective, the SRS airbags must deploy with
tremendous speed. The rapid deployment of the SRS air-
bags makes the SRS airbags themselves potential sources
of death or serious injury if an occupant is too close to an
airbag, or if an object or some part of his or her body has
been placed between the occupant and the airbag at the
time of deployment. This is just one example of how the
instructions in Section 1−3 of this Owner ’s Manual will help
ensure proper use of the occupant restraint systems, and
increase the safety they can provide to you and your fami-
ly in the event of an accident.
Toyota recommends you to read the provisions in Section
1 −3 carefully and refer to them as needed during your time
of ownership of this vehicle.Event data recorder
Your vehicle has computers that monitor and control cer-
tain aspects of your vehicle. These computers assist in
driving and maintaining optimal vehicle performance. Be-
sides storing data useful for troubleshooting, there is a
system to record data in a crash or a near car crash
event. This is called an Event Data Recorder (EDR).
The SRS airbag sensor assembly contains the EDR. In a
crash or a near car crash event, this device may record
some or all of the following information:
 Engine speed
 Whether the brake pedal was applied or not
 Vehicle speed
 To what extent the accelerator pedal was depressed
 Position of the transmission selector lever
 Whether the driver and front passenger wore the
seat belts or not
 Driver ’s seat position
 Front passenger ’s occupant classification

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
XS15011
The automatic light control sensor is on
the top of the driver’s side instrument
panel.
Do not place anything on the instrument
panel, and/or do not affix anything on the
windshield to block this sensor.
If you feel that the automatic light control
comes into operation too early or too late,
have the sensor adjusted by your Toyota
dealer. Automatic light cut off system
Position 1 or position 3 with the tail
lights on—
The lights automatically turn off when the
driver ’s door is opened with the engine
switch in the “ACC” or “LOCK” position.
Position 2 or 3 with the headlights on—
The lights automatically turn off after 30
seconds when any of the doors is opened
and closed with the engine switch in the
“ACC” or “LOCK” position.
If the lock switch of the wireless remote
control transmitter is pushed when all the
doors are already locked, the lights auto-
matically turn off immediately.
The time before the headlights turn off
can be changed. If your vehicle is
equipped with the multi
−information dis-
play, it can be changed by yourself. For
details, contact your Toyota dealer.
If any of the doors is left open, the lights
automatically turn off after 20 minutes.
To turn them on again, turn the engine
switch to the “ON” position or actuate the
headlight switch.
If you are going to park for over one
week, make sure the headlight switch is
off.
NOTICE
To prevent the battery from being dis-
charged, do not leave the lights on
for a long period when the engine is
not running.
Daytime Running Light (DRL) system
(on some models)
The Daytime Running Light (DRL) system
can make it easier for others to see the
front of your vehicle during the day. The
DRL system can be helpful in many differ-
ent driving conditions, but they can be
especially helpful in the short periods after
dawn and before sunset.
The DRL system will make the front turn
signal lights come on when:
The engine is on with the engine run-
ning.
The knob is in the “OFF” position,
position 1 or position 3 with the tail
lights on.
The parking brake is released.
To turn off the DRL system, twist the knob
to position 2 or position 3 with the head-
lights on, flashing the high beam head-
lights or turn the engine switch to the
“ACC” or “LOCK” position.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
(j) “VSC OFF” and slip indicator lights
The “VSC OFF” indicator light flashes and
the slip indicator light comes on to warn
that there is a problem somewhere in the
following:
Vehicle stability control system
Traction control system
“AUTO LSD” system
The lights come on when the engine
switch is turned to the “ON” position, and
will go off after a few seconds.
If the “VSC OFF” indicator light flashes
and the slip indicator lights comes on dur-
ing driving, the above mentioned systems
will not work. However, if the brakes oper-
ate normally when applied, it is not a
problem to continue driving.
In the following cases, contact your Toyota
dealer:
The “VSC OFF” and slip indicator lights
do not come on after the engine switch
is turned to the “ON” position.
The “VSC OFF” indicator light flashes
and the slip indicator light remains on
after the engine switch is turned to the
“ON” position.
The “VSC OFF” indicator light flashes
and the slip indicator light comes on
while driving.
(k) Open Door Warning Light and buzz- er
This light remains on until all the doors
are completely closed.
The buzzer also sounds once when any
of the doors is not completely closed at
the vehicle speed 5 km/h (3 mph) or
more. Stop the vehicle and close all the
doors completely.
(l) SRS Warning Light
This light will come on when the engine
switch is turned to the “ON” position.
After about 6 seconds, the light will go
off. This means the systems of the air-
bag and front seat belt pretensioners
are operating properly.
This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, side and curtain shield airbag sen-
sors, curtain shield airbag sensors, driv-
er ’s seat position sensor, driver ’s seat belt
buckle switch, front passenger occupant
classification system
∗, passenger airbag
off switch, passenger airbag on −off indica-
tor light, seat belt pretensioner assem-
blies, inflators, “RSCA OFF” indicator light,
interconnecting wiring and power sources.
∗: The front passenger occupant classifica-
tion system includes the front passenger
occupant classification ECU, load sensor
and front passenger ’s seat belt buckle
switch.
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
engine switch is turned to the “ON”
position or remains on for more than
6 seconds.
The light comes on while driving.
(m) Tire Pressure Warning Light
This light warns that the tire inflation pres-
sure of one or more of your tires (except
for the temporary spare tire) is low. The
light comes on when the engine switch is
turned to the “ON” position. It goes off
after a few seconds. This indicates that
the tire pressure warning system is func-
tioning properly.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
For vehicles sold in Canada
This ISM device complies with
Canadian ICES001.
In the following cases, the system may
not work properly.
When ice, snow, mud or other objects
build up on the sensor
When the vehicle is parked in extreme-
ly high or extremely low temperature
for a long period
When driving on bumpy or graveled
roads or on grass
When a device such as a horn from
another vehicle, motorcycle engine, or
an air brake sound from a heavy −duty
vehicle, issues ultrasonic waves, near
your vehicle
When attaching a two −way radio anten-
na
When rain or water splashes on the
sensor
When operating the vehicle on an in-
clined surface
When a radio antenna or fender pole
is mounted on your vehicle
When a towing hitch is mounted on
your vehicle
When a towing eyelet is mounted on
your vehicle
When the tail −gate is opened
When the bumper is damaged The system may not detect the follow-
ing.
Thin objects such as a wire or rope
Objects with a surface area too small
to reflect ultrasonic waves such as
wire gauze or fence
Sound wave absorbing objects or mate-
rial such as cotton or snow
A person near the vehicle (depending
on the type of clothes worn)
Objects with a sharp edge
Small or short objects
Tall objects with an upper part project-
ing toward the vehicle
Objects just under the bumper
Objects very close to your vehicle
When the bumper is damaged
In the following cases, have your
Toyota dealer check the system.
When the bumper is damaged
When the indicator is continuously on

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Driving with tire chains installed.
Driving over the steps such as the
joints on the road.
Driving on roads where the road
surface is pitted or has other differ-
ences in surface height.
Install all 4 tires of specified size at
appropriate pressure: The antilock
brake system detects vehicle speeds
using the speed sensors for respec-
tive wheels’ turning speeds. The use
of tires other than specified may fail
to detect the accurate turning speed
resulting in a longer stopping dis-
tance.
LS20017
Ty p e A
LS20018
Ty p e B
“ABS” warning light
The light comes on when the engine
switch is turned to the “ON” position. If
the anti −lock brake system and the brake
assist system work properly, the light
turns off after a few seconds. Thereafter,
if either of the systems malfunctions, the
light comes on again.
When the “ABS” warning light is on (and
the brake system warning light is off), the
following systems do not operate, but the
brake system still operates conventionally.
Anti −lock brake system
Brake assist system
Traction control system
“AUTO LSD” system
Vehicle stability control system
When the “ABS” warning light is on (and
the brake system warning light is off), the
anti −lock brake system does not operate
so that the wheels will lock up during a
sudden braking or braking on slippery
road surfaces.