Toyota Sienna 2006 Operating Manual page 401

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 "TRAC OFF" indicator light will come
on when the "VSC" warning light comes
on even if the "TRAC OFF" switch is not
pushed.
06 SIENNA_U (L/O 0603)
Traction control system
(all- wheel drive models)
The traction control system automatical-
ly helps prevent the spinning of 4
wheels when the vehicle is started or
accelerated on slippery road surfaces.
When the ignition key is turned to "ON",
the system automatically turns on.
CAUTION
Under certain slippery road condi-
tions, full traction of the vehicle and
power against 4 wheels cannot be
maintained, even though the traction
control system is in operation. Do not
drive the vehicle under any speed or
maneuvering conditions which may
cause the vehicle to lose traction
control. In situations where the road
surface is covered with ice or snow,
your vehicle should be fitted with
snow tires or tire chains. Always
drive at an appropriate and cautious
speed for the present road condi-
tions.
NORMAL DRIVING MODE
Leave the system on during the ordi-
nary driving so that it can operate
when needed.
You may hear a sound in the engine
compartment for a few seconds just after
the vehicle begins to move. This means
that the traction control system is in the
self- check mode, but does not indicate a
malfunction.
2006 SIENNA from March '06 Prod. (OM45443U)
205