Lexus RC 350 AWD 2019 Owner's Manual page 194

194
4-5. Using the driving support systems
■ When the message is displayed on the
multi-information display showing that
TRAC has been disabled even if the
switch has not been pressed
TRAC cannot be operated. Contact your
Lexus 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/back-
ward 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 moved to P or N.
● The accelerator pedal is depressed.
● The parking brake is engaged.
● Approximately 2 seconds elapse after
the brake pedal is released.
■ VGRS is disabled when
VGRS may stop operating in the following
situations.
In this event, the steering wheel may move
from its straight forward position, but it will
return when the system restarts.
When the steering wheel is operated for
●
an extended period of time while the
vehicle is stopped or is moving very
slowly
(on vehicles with LDH, DRS is disabled
together with VGRS)
● When the steering wheel has been held
fully to the left or right
The center position of the steering wheel
may change when VGRS is disabled. How-
ever, the position will return to normal after
VGRS is reactivated.
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810
■ When the battery is disconnected (vehi-
cles with VGRS)
The steering wheel may move from its
straight forward position, but this will be
corrected automatically when driving.
Sounds and vibrations caused by the
■
ABS, brake assist, VSC, TRAC, hill-start
assist control and VGRS systems
A sound may be heard from the engine
●
compartment when the brake pedal is
depressed repeatedly, when the engine 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 systems are oper-
ating. None of these indicates that a mal-
function has occurred.
• Vibrations may be felt through the vehicle
body and steering.
• A motor sound may be heard after the
vehicle comes to a stop.
• The brake pedal may pulsate slightly after
the ABS is activated.
• The brake pedal may move down slightly
after the ABS is activated.
EPS, VGRS and DRS operation sound
■
When the steering wheel is operated, a
motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
Reactivation of the TRAC/VSC systems
■
Even after the TRAC/VSC systems have
been turned off, turning the engine off and
then on again will automatically reactivate
the TRAC/VSC systems.
■ Reactivation of the TRAC system linked
to vehicle speed
When only the TRAC system is turned off,
the TRAC system will turn on when vehicle
speed increases. However, when both
TRAC/VSC systems are turned off, the sys-
tems will not turn on even 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