brake sensor lexus LC500h 2021 / LEXUS 2021 LC500,LC500H (OM11559U) User Guide

2464-5. Using the driving support systems
■Active Cornering Assist operation
sounds and vibrations
When the Active Cornering Assist is oper-
ated, operation sounds and vibrations may
be generated from the brake system, but
this is not a malfunction.
■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
off, the systems will be automatically re-
enabled in the following situations:
●When the engine 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.
■Operating conditions of Active Corner-
ing Assist
The system operates when the following
occurs.
●TRAC/VSC can operate
●The driver is attempting to accelerate
while turning
●The system detects th at the vehicle is
drifting to the outer side
●The brake pedal is released
■Secondary Collision Brake operating
conditions
The system operates when the SRS airbag
sensor detects a collis ion while the vehicle
is in motion. However, the system does not
operate in any of the following situations.
●The vehicle speed is below 6 mph (10
km/h)
●Components are damaged
■Secondary Collision Brake automatic
cancellation
The system is automatically canceled in any
of 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 “Secondary Collision Brake system
Malfunction” is displayed on the multi-
information display
The system may be ma lfunctioning. 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, re frain 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.
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.
■Stopping distance when the ABS is
operating may exceed that of normal
conditions
The ABS is not designed to shorten the
vehicle’s stopping di stance. Always main-
tain a safe distance from the vehicle in
front of you, especially in the following
situations:
●When driving on dirt, gravel or snow-
covered roads
●When driving over bumps in the road

433What to do if... (Troubleshooting)
It is locked automatically to prevent
theft of the vehicle. ( P.153, 157)
 Is the window lock switch pressed?
The power window at the passenger’s seat
cannot be operated if the window lock
switch is pressed. ( P.139)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode (the engine is
not running operating>) for a period of time.
( P.155, 160)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.351)
 The parking brake indicator is on
Is the parking brake released? ( P.176)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.347, 356) 
Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.72)
To stop the alarm, turn the engine
switch to IGNITION
ON mode , or start the
engine .
 Is the electronic key left inside the
vehicle?
Check the message on the multi-informa-
tion display. ( P.356)
 When a warning light turns on or a
warning message is displayed, refer
to P.347, 356.
 Slow down the vehicle, drive with
extra caution, and take your vehicle
to the nearest Lexus dealer or
authorized tire dealer as soon as
possible to have the tire replaced.
( P.362)
The steering wheel cannot be
turned after the engine system> is stopped
The windows do not open or
close by operating the power
window switches
The engine switch switch> is turned off automati-
cally
A warning buzzer sounds during
drivingAn alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire

442Alphabetical index
...........................................................................136
Mirror position memory........................... 127
Outside rear view mirror defoggers . 261
Outside temperature.................................... 82
Overheating ....................................... 376, 379
P
Paddle shift switches ...... 167, 168, 173, 174
Panic mode ..................................................... 108
Parking assist sensors (intuitive parking assist) ............................................................. 225
Parking brake.................................................. 176 Indicator ........................................................ 350
Operation........................................................ 176
Parking brake engaged warning buzzer...........................................................................178
Warning message.......................................178
Parking lights .................................................... 181 Light switch ...................................................... 181
Replacing light bulbs................................ 336
PCS (Pre-Collision System) ...................200 Function ..........................................................200
PCS OFF switch ........................................ 202
Warning light ............................................... 349
Personal lights................................................. 271
Pop-up display ................................................. 84
Pop Up Hood................................................... 36
Power control unit.......................................... 65
Power control unit coolant ......................308 Capacity .........................................................390
Checking ...................................................... 308
Preparing and checking before winter.........................................................................250
Power easy access system ........................ 127
Power outlet ...................................................277
Power steering (Elect ric power steering
system).......................................................... 243 Warning light ...............................................348
Warning message..................................... 357
Power switch (engine switch) ........152, 156 Auto power off function ................155, 160
Changing the power switch (engine switch) modes ................................ 155, 159
If your vehicle has to be stopped in an emergency ................................................ 338
Starting the hybrid system (engine) ................................................................. 152, 156
Power windows ............................................. 138 Door lock linked window operation . 139
Jam protection function ........................... 139
Operation ....................................................... 138
Window lock switch.................................. 139
Pre-Collision System (PCS) ...................200 Function ......................................................... 200
PCS OFF switch ........................................202
Warning light ...............................................349
R
Radar cruise control (dynamic radar cruise control with full-speed range)............... 214
Radiator ........................................................... 309
Rear side marker lights ................................ 181 Light switch ...................................................... 181
Replacing light bulbs ................................336
Rear turn signal lights .................................. 175 Replacing light bulbs ................................336
Turn signal lever ...........................................175
Rear view mirror Inside rear view mirror ..............................134
Outside rear view mirrors...................... 135
Rear window defogger ...............................261
Refueling ............................................................ 191 Capacity ........................................................ 388
Fuel types ...................................................... 388
If the fuel filler do or cannot be opened
......................................................................... 366
Opening the fuel tank cap ....................... 191
Regenerative braking ................................... 63
Remote Touch .............................................. 254
Replacing Electronic key battery ............................. 330
Fuses.................................................................. 331
Light bulbs .....................................................336
Tires ....................................................................321