465
4-5. Using the driving support systems
4
Driving
disabled (only Pre-Collision warning is
available). The PCS warning light will
come on and a message will be displayed
on the multi-information display.
(P.253)
■ When the message is displayed on the
multi-information display showing that
Active TRAC has been disabled even if
has not been pressed
Active TRAC is temporary deactivated. If
the information continues to show, contact
your Lexus dealer.
■ Operating conditions of hill-start assist
control
When all of the following conditions are
met, the hill-start assist control will operate:
● The shift position is in a position other
than P or N (when starting off for-
ward/backward on an upward incline).
● The vehicle is stopped.
● The accelerator pedal is not depressed.
● The parking brake is not engaged.
● The power switch is in ON
■ Automatic system cancelation of hill-
start assist control
The hill-start assist control will turn off in any
of the following situations:
● The shift position is shifted to P or N.
● The accelerator pedal is depressed.
● The brake pedal is depressed and the
parking brake is engaged.
● A maximum of 2 seconds have elapsed
after the brake pedal is released.
● The power switch is turned to OFF.
■ Sounds and vibrations caused by the
Multi Terrain ABS, brake assist, VSC,
Trailer Sway Control, Active TRAC and
hill-start assist control systems
● A sound may be heard from the engine
compartment when the brake pedal is
depressed repeatedly, when the hybrid
system is started or just after the vehicle
begins to move. This sound does not indi-
cate that a malfunction has occurred in
any of these systems.
● Any of the following conditions may
occur when the above systems are oper-
ating. None of these indicates that a mal-
function has occurred.
• Vibrations may be felt through the vehi-
cle 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’s door is opened.
● Operating sound heard from the engine
compartment when one or two minutes
passed after the stop of the hybrid sys-
tem.
■ Automatic reactivation of Active
TRAC, Trailer Sway Control and VSC
systems
After turning the Active TRAC, Trailer
Sway Control and VSC systems off, the sys-
tems will be automatically re-enabled in the
following situations:
● When the power switch is turned off.
● If only the Active TRAC system is turned
off, the Active TRAC will turn on when
vehicle speed increases.
If both the Active TRAC and VSC sys-
tems are turned off, automatic re-
enabling will not occur when vehicle
speed increases.
■ Reduced effectiveness of the EPS sys-
tem
The effectiveness of the EPS system is
reduced to prevent the system from over-
heating when there is frequent steering
input over an extended period of time. The
steering wheel may feel heavy as a result.
Should this occur, refrain from excessive
steering input or stop the vehicle and turn
the hybrid system off. The EPS system
should return to normal within 10 minutes.
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