Page 185 of 410
1752005 TACOMA from Mar. ’05 Prod. (OM35862U)
LS17011
The “AUTO LSD” system aids traction
by using the traction control system to
control engine performance and braking
when one of the rear wheels begins to
spin.
This system should be used only when
wheel spinning occurs in a ditch or
rough surface.
This system is effective in case one of
the rear wheels is spinning.
CAUTION
Do not use the “AUTO LSD” system
in conditions other than the above. A
much greater steering effort and more
careful cornering control will be re-
quired.
LS17014
To activate the system, push the “AUTO
LSD” switch with the vehicle stopped.
The “AUTO LSD” is activated under the
following condition. At this time, the
“AUTO LSD” indicator light will come
on.
The driving mode is set in the two−
wheel drive mode (In the four −wheel
drive mode, the system does not
work.)
Driving at a speed under 100 km/h (62
mph)
To cancel the system, push the “AUTO
LSD” switch once again.
“AUTO LSD” system
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1762005 TACOMA from Mar. ’05 Prod. (OM35862U)
If the engine is turned off while the
“AUTO LSD” indicator light is on and then
restarted, the indicator light will turn off
automatically.
LS17015
Make sure the “AUTO LSD” indicator light
comes on under the above condition when
you use the “AUTO LSD” system.
The slip indicator light blinks when the
system is controlling the spinning of the
rear wheels.
The “AUTO LSD” and slip indicator lights
come on for a few seconds when the
ignition key is turned to “ON”. If the indi-
cator lights does not come on when the
ignition key is turned to “ON”, contact
your Toyota dealer.The brake actuator temperature increases
during continuous operation of the follow-
ing systems under conditions such as on
slippery roads.
“AUTO LSD” system
Traction control system
Hill
−start assist control system
If the brake actuator temperature becomes
too high while any of the systems is oper-
ating, a buzzer will start to sound intermit-
tently to indicate that the “AUTO LSD”
system can no l onger operate. In this
case, immediately stop your vehicle at a
safe place.
If the system continues to operate, the
buzzer sound changes from intermittent to
continuous. (The continuous buzzer
sounds for about 3 seconds.)
At the time the slip indicator light will
come on and the “AUTO LSD” system
temporarily stops operating in order to
protect the brake actuator. (Although the
“AUTO LSD” system does not operate, it
is no problem to continue driving.) The
system will be automatically restored after
a short time and the slip indicator light
goes off.
Page 187 of 410

1772005 TACOMA from Mar. ’05 Prod. (OM35862U)
LS17017
“VSC TRAC” warning light
These lights warn that there is a problem
somewhere in the following.
“AUTO LSD” system
Traction control system
Vehicle stability control system
Hill−start assist control system When the system is normal and the igni-
tion key is turned to “ON”, the light will
come on and will go off after a few sec-
onds.
It is not a malfunction that the warning
light may stay on for 60 seconds after the
ignition key is turned to “ON”.
Depressing the brake pedal repeatedly
may turn on the lights. It is normal if it
goes out after a few seconds.
If the “VSC TRAC” warning light and slip
indicator light come on while driving, the
“AUTO LSD” system does not work. How-
ever, as the brakes operate normally when
applied, it is no problem to continue your
driving.
In the following cases, contact your Toyota
dealer:
The warning light does not come on
after the ignition key is turned to “ON”.
The warning light remains on after the
ignition key is turned to “ON”.
The warning light comes on while driv-
ing.
NOTICE
Do not drive with the “AUTO LSD”
switch continuously turned on.
The vehicle stability control system
helps provide integrated control of the
systems such as anti lock brake sys-
tem, traction control, engine control,
etc. This system automatically controls
the output of the brakes or engine to
help prevent the vehicle from skidding
when cornering on a slippery road sur-
face or operating steering wheel abrupt-
ly.
The vehicle stability control activates
when the vehicle speed is more than 15
km/h (9 mph).
You may hear a sound in the engine
compartment for a few seconds when the
engine is started or just after the vehicle
begins to move. This means that the sys-
tem is in the self
−check mode, but does
not indicate a malfunction.
Vehicle stability control
system
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1782005 TACOMA from Mar. ’05 Prod. (OM35862U)
CAUTION
Do not rely excessively on the ve-
hicle stability control system. Even
if the vehicle stability control sys-
tem is operating, you must always
drive carefully and attentively to
avoid serious injury. Reckless driv-
ing will result in an unexpected ac-
cident. If the slip indicator light
blinks and an alarm sounds, special
care should be taken while driving.
Only use tires of specified size. The
size, manufacturer, brand and tread
pattern for all 4 tires should be the
same. If you use the tires other
than specified, or different type or
size, the vehicle stability control
system may not function correctly.
When replacing the tires or wheels,
contact your Toyota dealer. (See
“Checking and replacing tires” on
page 353 in Section 7 2.)
LS17007
If the vehicle is going to skid during driv-
ing, the slip indicator light blinks and an
alarm sounds intermittently. Special care
should be taken while driving.
The slip indicator light comes on for a few
seconds when the ignition key is turned
to “ON”. If the indicator light does not
come on when the ignition is turned on,
contact your Toyota dealer.
LS17010
The vehicle stability control system au-
tomatically turns off, and the “VSC
OFF” indicator light is illuminated,
when either one of the following condi-
tions applies:
Four−wheel drive mode is set. (on
four −wheel drive models)
The rear differential is locked. (on mod-
els equipped with the rear differential
lock system)
The “VSC OFF” indicator light comes on
for a few seconds when the ignition key
is turned to “ON”, and then turns off. If
either one of the above conditions applies,
the indicator light is illuminated again.
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1792005 TACOMA from Mar. ’05 Prod. (OM35862U)
In the following cases, contact your Toyota
dealer:
The indicator light does not come on
when the ignition key is turned to
“ON”.
The indicator light remains on after the
ignition key is turned to “ON”.
The indicator light comes on when the
system is on while driving.
LS17017
“VSC TRAC” warning light
This light warns that when there is a
problem somewhere in the following.
Vehicle stability control system
Traction control system
“AUTO LSD” system
Hill−start assist control system
Downhill assist control system
The light comes on when the ignition key
is turned to “ON”, and will go off after a
few seconds. The light may come on for 60 seconds
after the ignition key is turned to “ON”. It
is normal if they go out after a while.
Depressing the brake pedal repeatedly
may turn on the light. It is normal if they
go out after a few seconds.
If the light comes on while driving, the
vehicle stability control system does not
work. However, as the brakes operate nor-
mally when applied, it is no problem to
continue your driving.
In the following cases, contact your Toyota
dealer:
The warning light does not come on
after the ignition key is turned to “ON”.
The warning light remains on after the
ignition key is turned to “ON”.
The warning light comes on while driv-
ing.
Four −wheel drive models, and two −wheel
drive models with the rear differential lock
system—
The “VSC OFF” indicator light comes on
when the “VSC TRAC” warning light
comes on, even when the front drive con-
trol switch knob is in the “H2” position or
the rear differential is unlocked.
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1802005 TACOMA from Mar. ’05 Prod. (OM35862U)
The downhill assist control system is a
system that assists the deceleration of
the engine brake when you drive down
a steep hill. When you are driving down
a hill with the front drive control switch
knob in the “L4” position, push the
“DAC” switch to limit the vehicle’s ac-
celeration. If the vehicle is traveling at
a speed of 25 km/h (15 mph) or less,
you can descend at a constant speed.
CAUTION
Do not rely excessively on the down-
hill assist control system. It may not
be able to maintain a low speed over
road surfaces or off road surfaces on
which sliding can easily occur, such
as extremely steep slopes or icy or
muddy roads.
TO ACTIVATE THE DOWNHILL ASSIST
CONTROL SYSTEM1. Turn the front drive control switch knob to the “L4” position.
The system does not operate when the
front drive control switch knob is in the
“H2” or “H4” position, or the rear differen-
tial is locked.
2. In order to make full use of the en- gine brake, putting the transmission
in “L” or “2” is recommended.
The system will operate even if the trans-
mission selector lever is in “D”, “4”, “3”
or “N”. However, when it is in “L” or “2”
the engine brake can also be utilized en-
abling the system to operate more effec-
tively.
LS17016
3. Push the “DAC” switch to turn the system on. The downhill assist con-
trol system indicator light on the in-
strument panel will come on.
If the downhill assist control system indi-
cator light flashes, one of the following
may be the cause:
The selector lever is in the “N” posi-
tion.
The front drive control switch knob is
in the “H2” or “H4” position.
The rear differential is locked.
If the indicator light does not come on
when the switch is pushed, contact your
Toyota dealer.
Downhill assist control system
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1812005 TACOMA from Mar. ’05 Prod. (OM35862U)
LS17007
With the vehicle traveling at a speed of
25 km/h (15 mph) or less, release your
foot from the accelerator or brake pedal
to activate the system. The vehicle will
descend the hill at a low speed. While the
system is operating, the slip indicator light
on the instrument panel will flash and the
stop lights and high mounted stoplight will
be lit.
If you push the “DAC” switch to turn the
system off while it is in operation, the
system will stop operating gradually. The
downhill assist control system indicator
light will flash to alert the driver. To con-
tinue driving at a low speed, push the
“DAC” switch to turn the system on. The slip indicator light and downhill assist
control system indicator light come on for
a few seconds when the ignition key is
turned to “ON”. If any of the indicator
lights does not come on when the ignition
is turned on, contact your Toyota dealer.
If the system is used frequently, the
brake actuator temperature may become
too high and a buzzer will sound inter-
mittently.
If this happens, the downhill assist control
system indicator light will flash and a
buzzer will sound intermittently. When the
temperature of the brake actuator de-
creases, the system will begin to operate
again. Until it restarts, the traction control
system and hill
−start assist control system
will not operate; however, the conventional
brake can be operated.
The brake actuator temperature increases
during continuous operation of the follow-
ing systems under conditions such as on
slippery roads.
Downhill assist control system
Hill− start assist control system
Traction control system If the brake actuator temperature becomes
too high while any of the systems is oper-
ating, a buzzer will start to sound intermit-
tently to indicate that the downhill assist
control system can no longer operate. In
this case, stop your vehicle immediately at
a safe place.
If the system continues to operate, the
buzzer sound changes from intermittent to
continuous. (The continuous buzzer
sounds for about 3 seconds.)
At this time, the slip indicator light will
come on and the downhill assist control
system stops operating temporarily in or-
der to protect the brake actuator. (Al-
though the downhill assist control system
does not operate, it is no problem to con-
tinue your driving.) The system will be
automatically restored after a short time
and the slip indicator light goes out.
Page 192 of 410

1822005 TACOMA from Mar. ’05 Prod. (OM35862U)
LS17017
If there is any abnormality in the sys-
tem, the “VSC TRAC” warning light will
come on. When the “DAC” switch is
pushed, the downhill assist control sys-
tem indicator light also flash.
If the “VSC TRAC” warning light comes
on, there may be an abnormality in any
of the following system in addition to the
downhill assist control system.
Hill−start assist control system
Traction control system
Vehicle stability control system
Downhill assist control system “VSC TRAC” warning light
When the system is normal and the igni-
tion key is turned to “ON”, the warning
light will come on and will go off after a
few seconds.
It is not a malfunction that the warning
light may stay on for 60 seconds after the
ignition key is turned to the “ON” position.
Depressing the brake pedal repeatedly
may turn on the light. It is normal if it
goes out after a few seconds.
If the warning light comes on while driv-
ing, the system does not work. However,
as normal braking operates when being
applied, it is no problem to continue your
driving.
In the following cases, contact your Toyota
dealer:
The warning light does not come on
after the ignition key is turned to “ON”.
The warning light remains on after the
ignition key is turned to “ON”.
The warning light comes on while driv-
ing.
The hill start assist control system as-
sists you in starting to move up a
steep or slippery hill. When you start
to move up the hill slope, the system
helps to prevent the vehicle from roll-
ing backward in the interval while you
move your foot from the brake pedal to
the accelerator pedal.
CAUTION
Do not rely excessively on the h
ill
start assist control system. The ve-
hicle may not be able to start
smoothly on road surfaces or off
road surfaces such as extremely
steep slopes or icy roads, on which
sliding can occur very easily.
Do not use the hill start assist con-
trol system to stop the vehicle. This
system is not designed as a func-
tion for stopping the vehicle on a
uphill slope.
Hill start assist control
system (automatic
transmission only)