Toyota Tundra 2005 Owner's Manual page 354

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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
ignition key is turned to the "ON" posi-
tion, or remains on.
"
The light comes on while you are driv-
ing.
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.
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'05 TUNDRA_U (L/O 0409)
Either of the following conditions may
occur, but do not indicate a malfunc-
tion:
"
The light may stay on for about 60
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
may turn on the light. It is normal if it
turns off after about a few seconds.
BRAKE ASSIST SYSTEM (with the ve-
hicle stability control system)
When you slam the brakes on, the
brake assist system judges as an emer-
gency stop and provides more powerful
braking for a driver who cannot hold
down the brake pedal firmly.
When you slam the brakes on, more pow-
erful braking will be applied. At this time,
you may hear a sound in the engine
compartment and feel the vibrations of the
brake pedal. This does not indicate a mal-
function.
The brake assist system becomes opera-
tive after the vehicle has accelerated to
a speed in excess of approximately 10
km/h (6 mph). It stops operating when the
vehicle decelerates to a speed below
approximately 5 km/h (3 mph).
For an explanation of this system's warn-
ing light, see "Service reminder indicators
and warning buzzers" in Section 1- 6.
2005 TUNDRA from Sep. '04 Prod. (OM34432U)
353