Toyota TUNDRA 2004 Owner's Manual page 168

If either of the following conditions
occurs, this indicates a malfunction
somewhere in the components moni-
tored by the warning light system. Con-
tact your Toyota dealer as soon as
possible to service the vehicle.
The light does not come on when the
D
ignition key is turned to the "ON" posi-
tion, or the light remains on.
The light comes on while you are driv-
D
ing.
A warning light turning on briefly during
operation does not indicate a problem.
Vehicles with vehicle stability control
system—
The light comes on when the ignition key
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.
'04 TUNDRA_U (L/O 0309)
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
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Brake assist system
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Traction control system
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"AUTO LSD" system
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Vehicle stability control system
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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.
If either of the following conditions oc-
curs, this indicates a malfunction some-
where in the components 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
D
ignition key is turned to the "ON" posi-
tion, or remains on.
The light comes on while you are dri-
D
ving.
A warning light turning on briefly during
operation does not indicate a problem.
CAUTION
If the "ABS" warning light remains on
together with the brake system warn-
ing light, immediately stop your ve-
hicle at a safe place and contact your
Toyota dealer.
In this case, not only the anti−lock
brake system will fail but also the
vehicle will become extremely unsta-
ble during braking.
Either of the following conditions may
occur, but do not indicate a malfunc-
tion:
The light may stay on for about 60
D
seconds after the ignition key is turned
to the "ON" position. It is normal if it
turns off after a while.
Depressing the brake pedal repeatedly
D
may turn on the light. It is normal if it
turns off after a few seconds.
2004 TUNDRA from Sep. '03 Prod. (OM34426U)
159