brake sensor Lexus ES300h 2019 (OM06178U) Owner's Guide

2384-5. Using the driving support systems
■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.
■Active Cornering Assist operation
sounds and vibrations
When Active Cornering Assist is operated,
operation sounds and vibrations may be
generated from the brake system, but this is
not a malfunction.
■EPS 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 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
■Operating conditions of Active Corner-
ing Assist
The system operates in the following situa-
tions.
●TRAC/VSC can operate
●The system determines that the vehicle is
drifting to the outer side when attempting
to accelerate during cornering
●The brake pedal is released
■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.
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 distance. Always main-
tain a safe distance from the vehicle in
front of you, especially in the following
situations:

3637-2. Steps to take in an emergency
7
When trouble arises
■RCTA OFF indicator (warning buzzer)
■RCD OFF indicator (warning buzzer)
■PKSB OFF indicator (warning buzzer)
Warning lightDetails/Actions
(flashes)
(if equipped)
When a buzzer sounds:
Indicates a malfunction in the RCTA (Rear Cross Traffic Alert) function
 Have the vehicle inspected by your Lexus dealer immediately.
When a buzzer does not sound:
Indicates that the rear bumper around the radar sensor is covered with
dirt, etc. ( P.198)
 Follow the instructions displayed on the multi-information display.
(  P.212)
Warning lightDetails/Actions
(flashes)
(if equipped)
When a buzzer sounds:
Indicates a malfunction in the RCD (Rear Camera Detection) function
 Have the vehicle inspected by your Lexus dealer immediately.
When a buzzer does not sound:
Indicates that the function temporarily cannot be used due to the cam-
era being dirty, etc.
 Follow the instructions displayed on the multi-information display.
(  P.368)
Warning lightDetails/Actions
(flashes)
(if equipped)
When a buzzer sounds:
Indicates a malfunction in the PK SB (Parking Support Brake) system
 Have the vehicle inspected by your Lexus dealer immediately.
When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.
 Follow the instructions displayed on the multi-information display.
(  P.222, 368)

3657-2. Steps to take in an emergency
7
When trouble arises
■Brake hold operated indicator (warning buzzer)
■Hybrid system overheat warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Master warning light (warning buzzer)
■Warning buzzer
In some cases, the bu zzer may not be heard
due to being in a noisy location or audio
sound.
■Front passenger detection sensor, seat
belt reminder and warning buzzer
●If luggage is placed on the front passen-
ger seat, the front passenger detection
sensor may cause th e warning light to
flash and the warning buzzer to sound
even if a passenger is not sitting in the
seat.
●If a cushion is placed on the seat, the sen-
sor may not detect a passenger, and the
warning light may not operate properly.
■SRS warning light
This warning light system monitors the air-
bag sensor assembly, fr ont impact sensors,
side impact sensors (front door), side
impact sensors (front), side impact sensors (rear), driver’s seat position sensor, driver’s
seat belt buckle sw
itch, front passenger
occupant classificatio n system (ECU and
sensors), “AIR BAG ON” indicator light,
“AIR BAG OFF” indicator light, front pas-
senger’s seat belt buckle switch, seat belt
pretensioners, airbags, interconnecting wir-
ing and power sources. ( P.28)
■If the malfunction indicator lamp comes
on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving
trips.
If the light does not go off even after several
trips, contact your Lexus dealer as soon as
possible.
Warning lightDetails/Actions
(flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
Indicates that the hybrid system has overheated
This light may be displayed when dr iving under severe operating condi-
tions. (For example, when dr iving up a long steep hill.)
 Immediately stop the vehicle in a safe place and check the hybrid
system. ( P.389)
Warning lightDetails/Actions
A buzzer sounds and the warning ligh t comes on and flashes to indicate
that the master warning system has detected a malfunction.
 P.368

4208-2. Customization
■RCD (Rear Camera Detection) function* ( P.215)
*:If equipped
■PKSB (Parking Support Brake)* ( P.218)
*:If equipped
■Automatic air conditioning system ( P.253)
■Seat heater*/seat ventilators* ( P.261)
*:If equipped
■Heated steering wheel* ( P.261)
*:If equipped
FunctionDefault settingCustomized set-
ting
RCD (Rear Camera Detection)
functionOnOffO
FunctionDefault settingCustomized set-ting
PKSB (Parking Support Brake)
functionOnOffO
FunctionDefault settingCustomized set-ting
A/C auto switch operationOnOffOO
Exhaust gas sensor sensitivityStandard-3 to 3OO
FunctionDefault settingCustomized set-ting
Driver’s seat temperature pref-
erence in automatic modeStandard-2 (cooler) to 2 (warmer)OO
Passenger’s seat temperature
preference in automatic modeStandard-2 (cooler) to 2 (warmer)OO
FunctionDefault settingCustomized set- ting
Steering wheel heating prefer-
ence in automatic modeStandard-2 (low) to 2 (high)OO
ABC
ABC
ABC
ABC
ABC

439What to do if... (Troubleshooting)439What to do if... (Troubleshooting)
In this case, the hybrid system can be
started in a temporary way. ( P.383)
Is the 12-volt battery discharged?
( P.384)
 Is the power switch in ON mode?
If you cannot release the shift lever
by depressing the brake pedal with
the power switch in ON mode
( P.142)
 It is locked automatically to prevent
theft of the vehicle. ( P.135)
 Is the window lock switch pressed?
The power window except for the one at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.121)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or ON mode
(hybrid system is not operating) for
a period of time. ( P.137) 
The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.361)
 The parking brake indicator is on
Is the parking brake released? ( P.146)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.358, 368)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.62)
To stop the alarm, turn the power
switch to ON mode, or start the hybrid
system.
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.368)
 When a warning light turns on or a
warning message is displayed, refer
to P.358, 368.
The shift lever cannot be shifted
from P even if you depress the
brake pedal
The steering wheel cannot be
turned after the hybrid system is
stopped
The windows do not open or
close by operating the power
window switches
The power switch is turned off
automatically
A warning buzzer sounds during
driving
An 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

442Alphabetical index
Exterior .......................................................... 300
Interior .............................................................303
Seat belts........................................................303
Cargo capacity...............................................133
Cargo hooks ................................................... 271
Center Display ............................................. 246
Chains .............................................................. 243
Child-protectors............................................. 94
Child restraint system................................... 42 Fixed with a LATCH system .................. 49
Fixed with a seat belt................................... 46
Front passenger occupant classification system ..............................................................37
Points to remember .....................................42
Riding with children ......................................42
Types of child restraint system installation method ........................................................... 43
Using an anchor bracket ............................ 51
Child safety ....................................................... 42 12-volt battery precautions ....... 324, 387
Airbag precautions...................................... 33
Child restraint system................................. 43
Heated steering wheel and seat heater
precautions.................................................. 261
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................ 123
Power window lock switch.......................121
Power window precautions .....................121
Rear door child-protectors ..................... 94
Removed electronic key battery precau- tions ...............................................................340
Seat belt extender precautions ............. 25
Seat belt precautions ...................................42
Trunk precautions ........................................ 95
Cleaning.............................................. 300, 303 Aluminum wheels ..................................... 300
Exterior .......................................................... 300
Interior .............................................................303
Radar sensor.......................................163, 198
Seat belts........................................................303
Clock ........................................................ 70, 272 Coat hooks..................................................... 283
Compass ......................................................... 289
Condenser .......................................................321
Console box .................................................. 269
Console box light ........................................ 269
Cooling system............................................. 320
Engine overheating.................................. 389
Hybrid system overheating ................. 390
Cornering lights .............................................152 Replacing light bulbs ................................344
Cruise control Dynamic radar cruise control with full-
speed range ............................................... 187
Cup holder ..................................................... 269
Current fuel consumption ...........................74
Curtain shield airbags .................................. 28
Customizable features ................................ 412
D
Daytime running light system .................. 150
Defogger Outside rear view mirrors.....................254
Rear window ................................................254
Windshield ....................................................254
Dimension ...................................................... 394
Dinghy towing.................................................134
Display BSM (Blind Spot Monitor)......................197
Dynamic radar cruise control with full-
speed range ............................................... 187
Energy monitor ............................................... 81
Head-up display.............................................77
Intuitive parking assist ............................. 205
LTA (Lane-Tracing Assist) ...................... 181
Multi-information display .......................... 73
Parking Support Brake function (rear
pedestrians)............................................... 233
RCD (Rear Camera Detection) ......... 215
RCTA.................................................................. 211
Warning message .................................... 368
Distance until next engine oil change .....72
Do-it-yourself maintenance ..................... 310

447What to do if... (Troubleshooting)Alphabetical index447
Master warning light .................................. 365
Menu icons.........................................................73
MeterClock .................................................................. 70
Hybrid System Indicator ............................. 71
Indicators .......................................................... 67
Instrument panel light control .................72
Meter control switches ...............................74
Meters ................................................................ 70
Multi-information display ...........................73
Settings .............................................................. 75
Warning lights ............................................ 358
Warning message.....................................368
Mirrors Inside rear view mirror............................... 116
Outside rear view mirror defoggers254
Outside rear view mirrors ........................117
Vanity mirrors...............................................272
Moon roof Door lock linked moon roof operation........................................................................... 123
Jam protection function............................ 123
Operation........................................................ 122
Multi-information display .............................73 Audio system-linked display................... 75
Drive information 1/Drive information 2.............................................................................74
Driving information display.......................74
Driving support system information dis- play ................................................................... 75
Dynamic radar cruise control with full- speed range ................................................187
Energy monitor................................................81
LTA (Lane-Tracing Assist) ...................... 181
Menu icons .......................................................73
Meter control switches ...............................74
Navigation system-linked display ........ 75
Pop-up display................................................73
Settings .............................................................. 75
Suggestion function..................................... 76
Tire pressure ................................................ 328
Warning message.....................................368N
Navigation system-linked display.....75, 77
Noise from under vehicle ...............................6
O
Odometer ..........................................................72
Odometer and trip meter display “ODO TRIP” switch .................................... 72
Display items ................................................... 72
Pop-up display ............................................... 72
“ODO TRIP” switch .......................................72
Oil Engine oil....................................................... 396
Opener Fuel filler door ................................................. 161
Hood ................................................................. 316
Trunk ................................................................... 97
Outer foot lights Replacing light bulbs ................................344
Outside door handle lig hts...................... 265
Outside rear view mirrors .......................... 117 Adjustment ....................................................... 117
BSM (Blind Spot Monitor)......................197
Folding................................................................ 118
Linked mirror functi on when reversing
............................................................................. 118
Mirror position memory ............................ 110
Outside rear view mirror defoggers254
RCTA function ............................................... 211
Outside temperature.................................... 70
Overheating .................................................. 389
P
Paddle shift switches ..........................143, 144
Panic mode ....................................................... 89
Parking assist sensors (intuitive parking assist) ............................................................. 205
Parking brake..................................................146 Operation ....................................................... 146
Parking brake engaged warning buzzer............................................................................147

449What to do if... (Troubleshooting)Alphabetical index449
Fuses .................................................................. 341
Light bulbs..................................................... 344
Tires .................................................................. 372
Resetting the message indicating mainte- nance is required ...................................... 309
Road Sign Assist ........................................... 185
RSA (Road Sign Assist) ............................. 185
S
SCB (Secondary Collision Brake) ....... 236
Seat belt reminder ligh t...............................361
Seat belts............................................................ 24 Adjusting the seat belt................................ 26
Automatic Locking Retractor ................ 26
Child restraint system installation......... 43
Cleaning and maintaining the seat belt.........................................................................303
Emergency Locking Retractor .............. 26
How to wear your seat belt ..................... 25
How your child should wear the seat belt ............................................................................ 25
Pregnant women, proper seat belt use .............................................................................24
Reminder light and buzzer .....................361
Seat belt extender ........................................ 25
Seat belt pretensioners .............................. 26
SRS warning light ......................................359
Seat heaters ..................................................... 261
Seating capacity.............................................133
Seat position memory................................... 110
Seats................................................................... 109 Adjustment precautions .......................... 109
Adjustment..................................................... 109
Child seats/child restraint system installa-tion .....................................................................42
Cleaning.........................................................303
Driving position memory .......................... 110
Head restraints .............................................. 113
Power easy access system ...................... 110
Properly sitting in the seat .........................23
Seat heaters .................................................... 261
Seat position memory ................................ 110 Seat ventilators ..............................................261
Seat ventilators ...............................................261
Secondary Collision Brake (SCB) ....... 236
Sensor Automatic headlight system .................. 150
Automatic High Beam system ............. 153
Inside rear view mirror ............................... 117
Intuitive parking assist ............................. 205
LTA (Lane Tracing Assist) ......................176
Parking Support Brake function (rear-crossing vehicles)................................... 229
Parking Support Brake function (static objects) ........................................................ 225
Radar sensor ...................................... 163, 198
Rain-sensing windshield wipers .......... 158
RCTA................................................................. 212
Service plug ...................................................... 56
Service reminder message ..................... 309
S-FLOW mode ............................................ 258
Shift lever Hybrid transmission..................................... 141
Shift lever light .............................................. 265
Side airbags ...................................................... 28
Side marker lights......................................... 150 Light switch .................................................... 150
Side mirrors ...................................................... 117 Adjustment ....................................................... 117
BSM (Blind Spot Monitor)......................197
Folding................................................................ 118
Linked mirror functi on when reversing
............................................................................. 118
Mirror position memory ............................ 110
RCTA function ............................................... 211
Side turn signal lights ...................................145 Replacing light bulbs ................................344
Turn signal lever .......................................... 145
Side windows ..................................................120
Smart access system with push-button start...................................................................102Antenna location ......................................... 102
Entry functions ......................................... 91, 97
Starting the hybrid system ...................... 135