drs lexus LC500 2018 Owner's Manual

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4-5. Using the driving support systems
■ECB (Electronically Controlled
Brake System)
The electronically controlled system
generates braking force correspond-
ing to the brake operation
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the
brakes are applied suddenly, or if the
brakes are applied while driving on a
slippery road surface
■Brake assist
Generates an increased level of brak-
ing force after the brake pedal is
depressed when the system detects a
panic stop situation
■VSC (Vehicle Stability Control)
Helps the driver to control skidding
when swerving suddenly or turning on
slippery road surfaces
■Secondary Collision Brake (if
equipped)
When the airbag sensor detects a colli-
sion, the brakes and brake lights are
automatically controlled to reduce the
vehicle speed and that helps reduce
the possibility of further damage due to
a secondary collision.
■TRC (Traction Control)
Helps to maintain drive power and pre-
vent the drive wheels from spinning
when starting the vehicle or accelerat-
ing on slippery roads
■Hill-start assist control
Helps to reduce the backward move-
ment of the vehicle when starting on an
uphill
■VGRS (Variable Gear Ratio Steer-
ing) (if equipped)
Adjusts the front wheel turning angle in
accordance with the vehicle speed and
steering wheel movement
■DRS (Dynamic Rear Steering) (if
equipped)
Contributes to the turning characteris-
tics and responsiveness of the vehicle
by slightly adjusting the rear wheel
angle of the vehicle in accordance with
steering wheel movement.
■EPS (Electric Power Steering)
Employs an electric motor to reduce
the amount of effort needed to turn the
steering wheel
■AVS (Adaptive Variable Suspen-
sion System)
By independently controlling the
damping force of the shock absorbers
for each of the 4 wheels according to
Driving assist systems
To keep driving safety and perfor-
mance, the following systems oper-
ate automatically in response to
various driving situations. Be aware,
however, that these systems are
supplementary and should not be
relied upon too heavily when oper-
ating the vehicle.
Summary of the driving assist
systems

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4-5. Using the driving support systems
Driving
the road and driving conditions, this
system helps riding comfort with supe-
rior vehicle stability, and helps good
vehicle posture
Also, the damping force changes
depending on the selected driving
mode. ( P.242)
■LDH (Lexus Dynamic Handling
system) (if equipped)
Provides integrated control of the
VGRS, DRS and EPS. Contributes to
turning characteristics at low speeds,
responsiveness at medium speeds and
safety at high speeds by controlling the
steering angle of the front and rear
wheels in accordance with the steering
wheel operation and vehicle speed.
■VDIM (Vehicle Dynamics Inte-
grated Management)
Provides integrated control of the
ABS, brake assist, TRC, VSC, hill-start
assist control, EPS, VGRS (if
equipped) and DRS (if equipped) sys-
tems
Helps to maintain vehicle stability when
swerving on slippery road surfaces by
controlling the brakes, engine system> output, steering assist (if
equipped), and steering ratio (if
equipped)
■Emergency brake signal
When the brakes are applied suddenly,
the stop lights automatically flash to
alert the vehicle behind
■When the TRC/VSC/ABS systems are operating
The slip indicator light will flash while the TRC/VSC/ABS systems are operating.
■Disabling the TRC system
If the vehicle gets stuck in mud, dirt or snow,
the TRC system may reduce power from the engine to the wheels.
Pressing the switch to turn the sys-
tem off may make it easier for you to rock
the vehicle in order to free it.
To turn the TRC system off, quickly press
and release the switch.
The “Traction Control Turned Off” will be
shown on the multi-information display.
Press the switch again to turn the sys-
tem back on.
■Disabling both TRC and VSC systems
To turn the TRC and VSC systems off, press
and hold the switch for more than 3
seconds while the vehicle is stopped.
The VSC OFF indicator light will come on and the “Traction Cont rol Turned Off” will
be shown on the multi-information display.*

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4-5. Using the driving support systems
Press the switch again to turn the sys-
tems back on.*: On vehicles with PCS (Pre-Collision Sys-
tem), PCS will also be 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.217)
■When the message is displayed on the multi-information display showing that
TRC has been disabled even if the
switch has not been pressed
TRC cannot be operated. Contact any
authorized Lexus retailer or Lexus autho- rized repairer, or any reliable repairer.
■Operating conditions of hill-start assist control
When the following four 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.
■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 parking brake is engaged.
●2 seconds at maximum elapsed 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 dis-
abled 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.
■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, TRC, VSC, 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 .

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4-5. Using the driving support systems
Driving
■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 TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automatically re-
enabled in the following situations:
●When the engine switch
is turned off
●If only the TRC system is turned off, the
TRC will turn on when vehicle speed increases
If both the TRC 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 10 km/h
(6 mph) or more and the airbag sensor detects a collision. (The Secondary Colli-sion Brake will not operate when the vehicle
speed is below approximately 10 km/h [6 mph].)
■Secondary Collision Brake automatic
cancellation
The Secondary Collision Brake is automati-
cally canceled in the following situations:
●The vehicle speed drops below approxi-
mately 10 km/h (6 mph)
●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 any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■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 off. The EPS sys- tem should return to normal within 10 min-utes.
■Operating conditions of emergency
brake signal
When the following three conditions are
met, the emergency brake signal will oper- ate:
●The emergency flashers are off.
●Actual vehicle speed is over 55 km/h
(35 mph).
●The brake pedal is depressed in a manner
that cause the system to judge from the vehicle deceleration that this is a sudden braking operation.
■Automatic system cancelation of emer-
gency brake signal
The emergency brake sign al will turn off in
any of the following situations:
●The emergency flashers are turned on.
●The brake pedal is released.
●The system judges from the vehicle deceleration that is not a sudden braking
operation.
WARNING
■The ABS does not operate effectively when
●The limits of tire gripping performance have been exceeded (such as exces-
sively worn tires on a snow covered road).
●The vehicle hydroplanes while driving at high speed on wet or slick roads.

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Alphabetical index
Display
BSM (Blind Spot Monitor) ...................248
Consumption screen ................................ 104
Drive information .......................................... 94
Dynamic radar cruise control with full-
speed range .............................................. 229
Energy monitor ............................................ 104
Head-up display............................................ 99
Lexus parking assist ................................. 243
LKA (Lane-Keeping Assist) ................... 221
Multi-information display .......................... 92
Warning message.....................................378
Distance ..............................................................94
Do-it-yourself maintenance...................... 312
Door courtesy lights .................................... 291
Door lock
Door lock indicator...................................... 118
Doors .................................................................. 115
Smart entry & start system ...................... 122
Wireless remote control ........................... 113
Door pockets .................................................293
Doors .................................................................. 115
Automatic door locking and unlocking
system ............................................................. 118
Door glasses ................................................. 150
Door lock indicator...................................... 118
Door lock .......................................................... 115
Open door warning buzzer .......... 116, 118
Outside rear view mirrors....................... 147
Double locking system ................................. 75
Drive info 1/Drive info 2 ...............................94
Drive information ............................................94
Driver’s seat position memory................. 140
Driving position memory ........................ 140
Memory recall function ............................. 141
Drive-start control ........................................ 155
Driving ............................................................... 154
Break-in tips .................................................. 155
Correct driving posture ............................ 29
Driving mode select switch .................. 242
Hybrid vehicle driving tips .................... 267
Procedures..................................................... 154
Winter drive tips .........................................269
Driving mode select switch......................242
DRS (Dynamic Rear Steering) ...............262
Dynamic radar cruise control with full-
speed range ................................................229
Warning message ..................................... 237
Dynamic Rear Steering (DRS) ...............262
E
ECB (Electronically Controlled Brake Sys-
tem).................................................................262
Eco drive mode.............................................242
Eco Driving Indicator ................................... 86
Eco Driving Indicator Light........................ 86
Elapsed time ......................................................94
Electric motor (traction motor).................62
Electric Power Steering (EPS)
Function .......................................................... 262
Warning light ...............................................370
Electronically Controlled Brake System
(ECB) .............................................................262
Electronic key ...................................................112
Battery-saving function .............................124
If the electronic key does not operate
properly ...................................................... 389
Replacing the battery...............................349
Emergency, in case of
If a warning buzzer sounds.................. 368
If a warning light turns on...................... 368
If a warning message is displayed .....378
If the 12-volt battery is discharged ....392
If the electronic key does not operate
properly ...................................................... 389
If the engine will not start....................... 385
If the fuel filler door cannot be opened
......................................................................... 388
If the hybrid system will not start ....... 386
If you have a flat tire ................................. 384
If you lose your keys ................................ 388