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370
4-5. Using the driving support systems
*
: PCS will also be disabled (only
Pre-Collision warning is avail-
able). The PCS warning light will
come on and a message will be
displayed on the multi-information
display. (P.256)
■ When the message is dis-
played on the multi-information
display showing that TRAC has
been disabled even if has
not been pressed
TRAC is temporary deactivated. If
the information continues to show,
contact your Toyota dealer.
■ Operating conditions of hill-
start assist control
When the following four conditions
are met, the hill-start assist control
will operate:
● The shift lever is in a position
other than P or N (when starting
off forward/backward on an
upward incline).
● The vehicle is stopped.
● The accelerator pedal is not
depressed.
● The parking brake is not engaged.
■ Automatic system cancelation
of hill-start assist control
The hill-start assist control will turn
off in any of the following situations:
● The shift lever is shifted to P or N.
● The accelerator pedal is
depressed.
● The parking brake is engaged.
● No more than 2 seconds have
elapsed after the brake pedal is
released.
■ Sounds and vibrations caused
by the ABS, brake assist, VSC,
Trailer Sway Control, TRAC and
hill-start assist control systems
● A sound may be heard from the
engine compartment when the
brake pedal is depressed repeat-
edly, when the hybrid system is
started or just after the vehicle
begins to move. This sound does
not indicate that a malfunction has
occurred in any of these systems.
● Any of the following conditions
may occur when the above sys-
tems are operating. None of these
indicates that a malfunction has
occurred.
• Vibrations may be felt through the
vehicle body and steering.
• A motor sound may be heard also
after the vehicle comes to a stop.
■ ECB operating sound
ECB operating sound may be heard
in the following cases, but it does
not indicate that a malfunction has
occurred.
● Operating sound heard from the
engine compartment when the
brake pedal is operated.
● Motor sound of the brake system
heard from the front part of the
vehicle when the driver’ door is
opened.
● Operating sound heard from the
engine compartment when one or
two minutes passed after the stop
of the hybrid system.
■ Active Cornering Assist opera-
tion sounds and vibrations
When the Active Cornering Assist is
operated, operation sounds and
vibrations may be generated from
the brake system, but this is not a
malfunction.
■ EPS operation sound
When the steering wheel is oper-
ated, a motor sound (whirring
sound) may be heard. This does not
indicate a malfunction.
■ Automatic reactivation of
TRAC, Trailer Sway Control and
VSC systems
After turning the TRAC, Trailer
Sway Control and VSC systems off,
the systems will be automatically re-
enabled in the following situations:
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