Lexus LC500 2017 Owner's Manual page 229

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.
■ When the 12-volt battery is discon-
nected (vehicles 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.
■ 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 engine
<hybrid system>.
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.
■ Automatic reactivation of TRAC and
VSC systems
After turning the TRAC and VSC systems
LC500_LC500h_OM_OM11405U_(U)
4-5. Using the driving support systems
off, the systems will be automatically re-
enabled in the following situations:
● When the engine switch <power switch>
is turned off
● If only the TRAC system is turned off, the
TRAC will turn on when vehicle speed
increases
If both the TRAC and VSC systems are
turned off, automatic re-enabling will not
occur when vehicle speed increases.
■ Secondary Collision Brake operating
conditions
The vehicle speed is approximately 6 mph
(10 km/h) or more and the airbag sensor
detects a collision. (The Secondary Colli-
sion Brake will not operate when the vehicle
speed is below approximately 6 mph [10
km/h].)
Secondary Collision Brake automatic
■
cancellation
The Secondary Collision Brake is automati-
cally canceled in the following situations.
The vehicle speed drops below approxi-
●
mately 6 mph (10 km/h)
● A certain amount of time elapses during
operation
● The accelerator pedal is depressed a
large amount
■ If "Check Secondary Collision Brake
system" is displayed on the multi-infor-
mation display
The system may be malfunctioning. Have
the vehicle inspected at your Lexus dealer.
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 engine <hybrid system> off. The EPS sys-
tem should return to normal within 10 min-
utes.
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