2008 TOYOTA TUNDRA engine

85
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
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 SRS airbags are operat-
ing properly. This warning light system monitors the
airbag sensor assembly, front airbag
sensors, side and 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
and front passenger ’s seat belt buckle
switch.
If either 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. The SRS warning light will come on and
passenger airbag on
−off indicator light will
indicate “OFF” if there is a malfunction in
the front passenger occupant classification
system.

94
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
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 SRS front airbags are
operating properly.
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 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
and front passenger ’s seat belt buckle
switch.
If either 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.
The SRS warning light will come on and
passenger airbag on −off indicator light will
indicate “OFF” if there is a malfunction in
the front passenger occupant classification
system.
XS13133a
In the following cases, contact your Toyota
dealer as soon as possible:
The SRS front airbags have been in-
flated.
The front of the vehicle (shaded in the
illustration) was involved in an accident
that was not severe enough to cause
the SRS front airbags to inflate.
The pad section of the steering wheel
or front passenger airbag cover
(shaded in the illustration) is scratched,
cracked, or otherwise damaged.

104
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
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.
(For details, see “Service reminder indica-
tors 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
and front passenger ’s seat belt buckle
switch.
If either 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. The SRS warning light will come on and
passenger airbag on
−off indicator light will
indicate “OFF” if there is a malfunction in
the front passenger occupant classification
system.
XS13137

105
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
In the following cases, contact your Toyota
dealer as soon as possible:
Any of the SRS side airbags and cur-
tain shield airbags have been inflated.
The portion of the doors (shaded in the
illustration) was involved in an acci dent
that was not severe enough to cause
the SRS side airbags and curtain
shield airbags to inflate.
The surface of the seats with the side
airbag (shaded in the illustration) is
scratched, cracked, or otherwise dam-
aged.
The portion of the front pillars, rear
pillars or headlining (padding) contain-
ing the curtain shield airbag inside
(shaded in the illustration) is scratched,
cracked, or otherwise damaged.
NOTICE
Do not disconnect the battery cables
before contacting your Toyota dealer.
Your vehicle is equipped with a front
passenger occupant classification sys-
tem. The system detects conditions
1—4 (Shown in the table on page 107)
Based on these conditions, the systems
below are activated or deactivated:
Front passenger airbag
Side airbag on the right front passen-
ger seat
Front passenger ’s seat belt pretension-
er
The system monitors the weight and
load on the right front passenger seat,
and the seat belt buckle switch to de-
termine conditions 1—4.
In order to ensure that the system de-
tects the conditions correctly:
Do not place a heavy load on the right
front passenger seat or the seatback
table, etc.
Do not attach a commercial seatback
table or other heavy item to the back
of the right front passenger seat.
Do not apply pressure to the right front
passenger seat by resting hands or
legs on the seatback.
XS13216
The passenger airbag onoff indicator
light indicates the actuation of the front
passenger airbag, side airbag on the
front passenger seat and front passen-
ger seat belt pretensioner.
The passenger airbag onoff indicator
light will indicate “ON” and “OFF”
when the engine switch is turned to the
“ON” position. After about four sec-
onds, it will go off. After that, the front
passenger occupant classification sys-
tem operates and judges whether to in-
dicate “ON” or “OFF”.
—Front passenger occupant
classification system (Regular
cab models)

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
The indicator light will indicate “OFF”
when the engine switch is in the “ON”
position with the condition 2 in the table
shown below.
If the front passenger occupant classifica-
tion system determines that a person of
adult size sits in the front passenger seat
but the “OFF” indicator is illuminated, one
of the following is likely to have occurred:
Objects are placed under the front pas-
senger seat.
The front passenger seatback is in
contact with the back wall.
To ensure that the system correctly de-
tects the presence or absence of a person
of adult size sitting in the right front pas-
senger seat, make sure that none of the
above occur.
Make sure that the “ON” indicator is illu-
minated when a person of adult size is
seated in the right front passenger seat.
If the “OFF” indicator is illuminated, follow
the procedure below: 1. Turn the engine switch off.
2. Make sure the airbag off switch is set to the “AUTO” position.
3. Make sure the right front passenger seat belt is worn correctly. 4. Ask the front passenger to adjust the
seatback to the upright position and to
sit up straight on the center of the seat
cushion, with his/her legs comfortably
extended forward.
5. Turn the engine switch on, having the passenger remain in that position until
the passenger airbag on −off indicator
light indicates “ON”.
If the “OFF” indicator remains illuminated,
move the right front passenger seat fully
rearward.
XS13215
The SRS warning light will come on
and the passenger airbag onoff indica-
tor light will indicate “OFF” if there is
a malfunction in the front passenger
occupant classification system. Contact
your Toyota dealer as soon as possible.

11 0
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Do not modify or remove the front
seats.
Do not kick the front passenger
seat or subject it to severe impact.
Otherwise, the SRS warning light
may come on to indicate a malfunc-
tion of the detection system. In this
case, contact your Toyota dealer im-
mediately.
The passenger airbag on−off indicator light
may indicate “ON” (the front passenger
airbag and side airbag on the front
passenger seat may deploy) even if
observing the above cautions, when a
child sits in, or a forward −facing child
restraint system is installed on the front
passenger seat. Refer to all the cautions
in “—SRS driver airbag and front
passenger airbag” on page 77, “—SRS
side airbags and curtain shield airbags” on
page 95 and “Child restraint” on page 115
in this Section. Your vehicle is equipped with a front
passenger occupant classification sys-
tem. The system detects conditions
1—4 (Shown in the table on page 112)
Based on these conditions, the systems
below are activated or deactivated:
Front passenger airbag
Side airbag on the right front passen-
ger seat
Front passenger ’s seat belt pretension-
er
The system monitors the weight and
load on the right front passenger seat,
and the seat belt buckle switch to de-
termine conditions 1—4.
In order to ensure the system detects
the conditions correctly:
Do not place a heavy load on the right
front passenger seat or the seatback
table, etc.
Do not attach a commercial seatback
table or other heavy item to the back
of the right front passenger seat.
Do not apply pressure to the right front
passenger seat by resting hands or
legs on the seatback.
XS13216
The passenger airbag onoff indicator
light indicates the actuation of the front
passenger airbag, side airbag on the
front passenger seat and front passen-
ger seat belt pretensioner.
The passenger airbag onoff indicator
light will indicate “ON” and “OFF”
when the engine switch is turned to the
“ON” position. After about four sec-
onds, it will go off. After that, the front
passenger occupant classification sys-
tem operates and judges whether to in-
dicate “ON” or “OFF”.
—Front passenger occupant
classification system
(Double cab and Crew Max models)

111
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
The indicator light will indicate “OFF”
when the engine switch is in the “ON”
position with the condition 2 in the table
shown below.
If the front passenger occupant classifica-
tion system determines that a person of
adult size sits in the right front passenger
seat but the “OFF” indicator is illuminated,
one of the following is likely to have oc-
curred:
A rear passenger lifts the front passen-
ger seat cushion with their legs.
Objects are placed under the front pas-
senger seat.
The front passenger seatback is in
contact with the rear seat.
To ensure that the system correctly de-
tects the presence or absence of a person
of adult size sitting in the right front pas-
senger seat, make sure that none of the
above occur. Make sure that the “ON” indicator is illu-
minated when a person of adult size is
seated in the right front passenger seat.
If the “OFF” indicator is illuminated, ask
the passenger to sit up straight, well back
in the seat, and with the seat belt worn
correctly. If the “OFF” indicator remains
illuminated, either ask the passenger to
move to the rear seat, or if that is not
possible, move the right front passenger
seat fully rearward.
XS13215
The SRS warning light will come on
and the passenger airbag onoff indica-
tor light will indicate “OFF” if there is
a malfunction in the front passenger
occupant classification system. Contact
your Toyota dealer as soon as possible.

11 5
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
When you push the “RSCA OFF” switch
for a few seconds with the engine switch
on, the “RSCA OFF” indicator light comes
on and the roll sensing function is turned
off. When you push the switch again, the
indicator light goes off and the roll sens-
ing function is turned on. (For details
about the roll sensing function, see
“—SRS side airbags and curtain shield
airbags” on page 95 in this Section.)
In a severe side impact, the curtain shield
airbags on impacted side will inflate even
if the roll sensing function is turned off.
(For details about the curtain shield air-
bags, see “—SRS side airbags and curtain
shield airbags” on page 95 in this Sec-
tion.)
In a severe frontal impact, the seat belt
pretensioners will work even if the roll
sensing function is turned off. (For details
about the seat belt pretensioners, see
“—Seat belt pretensioners” on page 73 in
this Section.)
If the engine switch is turned to “ACC” or
“LOCK” with the roll sensing function off
and then the engine switch is turned back
to “ON”, the roll sensing function will turn
back on automatically.CAUTION
Before normal driving, make sure
the “RSCA OFF” indicator light is
off.
When the roll sensing function is
turned off (and the “RSCA OFF”
indicator light is on), the curtain
shield airbags and seat belt preten-
sioners will not work in a vehicle
rollover. Turning off the curtain
shield airbags and seat belt preten-
sioners reduces occupant protection
which your vehicle safety systems
can provide in accidents and in-
crease the likelihood of death or
serious injuries.
Toyota strongly urges the use of ap-
propriate child restraint systems for
children.
The laws of all 50 states in the U.S.A.
and Canada now require the use of a
child restraint system.
Your vehicle conforms to SAEJ1819.
If a child is too large for a child restraint
system, the child should sit in the rear
seat and must be restrained using the
vehicle’s seat belt. See “Seat belts” on
page 66 in this Section for details.
CAUTION
For effective protection in automo-
bile accidents and sudden stops, a
child must be properly restrained,
using a seat belt or child restraint
system depending on the age and
size of the child. Holding a child in
your arms is not a substitute for a
child restraint system. In an acci-
dent, the child can be crushed
against the windshield, or between
you and the vehicle’s interior.
Child restraint—
—Child restraint precautions