ignition LEXUS ES350 2021 Workshop Manual

3687-2. Steps to take in an emergency
■Brake hold operated indicator (warning buzzer)
■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 switch, front passenger
occupant classification system (ECU and
sensors), “AIR BAG ON” indicator light,
“AIR BAG OFF” indicator light, front pas-
senger’s seat belt buc kle switch, seat belt
pretensioners, airbags, interconnecting wir-
ing and power sources. ( P.28)
■Electric power steering system warning
light (warning buzzer)
When the battery charge becomes insuffi-
cient or the voltage temporarily drops, the electric power steering system warning
light may come on and the warning buzzer
may sound.
■When the tire pressure warning light
comes on
Inspect the tires to check if a tire is punc-
tured.
If a tire is punctured:  P.375
If none of the tires are punctured:
Turn the engine switch off then turn it to
IGNITION ON mode. Check if the tire
pressure warning light comes on or blinks.
If the tire pressure warning light blinks for
approximately 1 minute then stays on
There may be a malfunction in the tire pres-
sure warning system. Have the vehicle
inspected by your Lexus dealer immedi-
ately.
If the tire pressure warning light comes
on
1 After the temperature of the tires has
lowered sufficiently, check the inflation
pressure of each tire and adjust them to
the specified level.
2 If the warning light does not turn off
even after several minutes have
elapsed, check that the inflation pres-
sure of each tire is at the specified level
and perform initialization. ( P.332)
■The tire pressure warning light may
come on due to natural causes
The tire pressure wa rning light may come
on due to natural causes such as natural air
Warning lightDetails/Actions
(flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer immediately.
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.371

3887-2. Steps to take in an emergency
open.
■Key linked functions
1 Closes the windows and the moon roof
(if equipped) or panoramic moon roof
(if equipped) (turn and hold)
2 Opens the windows and the moon roof
(if equipped) or panoramic moon roof
(if equipped) (turn and hold)
These settings must be customized at your
Lexus dealer.
■Alarm
For Canada: Using the mechanical key to
lock the doors will not set the alarm system.
If a door is unlocked using the mechanical
key when the alarm system is set, the alarm
may be triggered.
1 Ensure that the shift lever is in P and
depress the brake pedal.
2 Touch the Lexus emblem side of
the electronic key to the engine
switch.
When the electronic key is detected, a
buzzer sounds and the engine switch will
turn to IGNITION ON mode.
When the smart access system with push-
button start is deactivated in customization
setting, the engine switch will turn to
ACCESSORY mode.
3Firmly depress the brake pedal and
check that is shown on the
multi-information display.
WARNING
■When using the mechanical key and
operating the power windows or
moon roof (if equipped) or panoramic
moon roof (if equipped)
Operate the power window, moon roof
or panoramic moon roof after checking
to make sure that there is no possibility of
any passenger having any of their body
parts caught in the window, moon roof or
panoramic moon roof.
Also, do not allow children to operate the
mechanical key. It is possible for children
and other passengers to get caught in
the power window, moon roof or pan-
oramic moon roof.
Starting the engine

3917-2. Steps to take in an emergency
7
When trouble arises
ing parts as shown in the illustration
4 Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the battery of your vehi-
cle.
5 Open and close any of the doors of
your vehicle with the engine switch
off.
6 Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by turning the
engine switch to IGNITION ON
mode.
7 Once the vehicle’s engine has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
Once the engine starts, have the vehicle
inspected at your Lexus dealer as soon as
possible.
■Starting the engine when the battery is
discharged
The engine cannot be started by push-start-
ing.
■To prevent battery discharge
●Turn off the headlights and the audio sys-
tem while the engine is stopped.
●Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■When the battery is removed or dis-
charged
●Information stored in the ECU is cleared.
When the battery is depleted, have the
vehicle inspected at your Lexus dealer.
●Some systems may require initialization.
(  P.430)
■When removing the battery terminals
When the battery terminals are removed,
the information stored in the ECU is
cleared. Before removi ng the battery termi-
nals, contact your Lexus dealer.
■Charging the battery
The electricity stored in the battery will dis-
charge gradually even when the vehicle is
not in use, due to natural discharge and the
draining effects of certain electrical appli-
ances. If the vehicle is left for a long time,
the battery may discharge, and the engine
may be unable to start. (The battery
recharges automatically during driving.)
■When recharging or replacing the bat-
tery
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
battery is discharged. Use the wireless
remote control or the mechanical key to
lock or unlock the doors.
●The engine may not start on the first
attempt after the battery has recharged
but will start normally after the second
attempt. This is not a malfunction.
●The engine switch mode is memorized by
the vehicle. When the battery is recon-
nected, the system will return to the
mode it was in before the battery was dis-
charged. Before disconnecting the bat-
tery, turn the engine switch off.
If you are unsure wh at mode the engine
switch was in before the battery dis-
charged, be especially careful when
reconnecting the battery.
■When replacing the battery
●Use a battery that conforms to European
regulations.
●Use a battery that the case size is same as
the previous one (LN3), 20 hour rate
capacity (20HR) is equivalent (70Ah) or
greater, and performance rating (CCA)
is equivalent (592A) or greater.
• If the sizes differ, the battery cannot be properly secured.
• Battery performance may decrease and
the engine may not be able to start.

4038-1. Specifications
8
Vehicle specifications
■Spark plug
*: The fluid capacity is a reference quantity.If replacement is necessary, contact your Lexus dealer.
Ignition system
2GR-FKS engineA25A-FKS engine
MakeDENSO FK20HBR8DENSO FC16HR-Q8
Gap0.031 in. (0.8 mm)0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system (battery)
Open voltage at 68°F (20°C):12.3 V or higher
(Turn the engine switch off and turn on the high beam
headlights for 30 seconds.)
Charging rates
Quick charge
Slow charge
15 A max.
5 A max.
Automatic transmission
Fluid capacity*2GR-FKS engine8.0 qt. (7.6 L, 6.7 Imp.qt.)
A25A-FKS engine7.9 qt. (7.5 L, 6.6 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transmission fluid type
Using transmission fluid other than the above type may cause abnormal noise or vibra-
tion, or damage the transmission of your vehicle.

4298-2. Customization
8
Vehicle specifications
switch or the Center Display. If a setting
is changed using a switch, the changed
setting will not be refl ected on the Center
Display until the engine switch is turned
off and then to IGNITION ON mode.
■Clock settings screen
If the clock adjustment screen is displayed
continuously when attempting to change
the clock settings, the system may be mal-
functioning. Have the vehicle inspected by
your Lexus dealer.

446What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.386)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.386)
 Is the electronic key battery weak or
depleted? ( P.341)
 Is the engine switch in IGNITION
ON mode?
When locking the doors, turn the engine
switch off. ( P.147)
 Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio
wave. ( P.108) 
Is the child-protector lock set?
The rear door cannot be opened
from inside the vehicle when the
lock is set.
Open the rear door from outside
and then unlock the child-protector
lock. ( P.98)
 The function to prevent the elec-
tronic key from being left inside the
trunk will operate and you can open
the trunk as usual. Take the key out
from the trunk. ( P.103)
 Did you press the engine switch
while firmly depressing the brake
pedal? ( P.144)
 Is the shift lever in P? ( P.149)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.106)
 Is the steering wheel unlocked?
( P.145)
 Is the electronic key battery weak or
depleted?
If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The doors cannot be locked or
unlocked
The rear door cannot be opened
The trunk lid is closed with the
electronic key left inside
If you think something is wrong
The engine does not start

447What to do if... (Troubleshooting)
In this case, the engine can be started in a
temporary way. ( P.388)
Is the battery discharged?
( P.389)
 Is the engine switch in IGNITION
ON mode?
If you cannot release the shift lever
by depressing the brake pedal with
the engine switch in IGNITION ON
mode ( P.150)
 It is locked automatically to prevent
theft of the vehicle. ( P.145)
 Is the window lock switch pressed?
The power window at the except for the
one at the driver’s seat cannot be operated
if the window lock switch is pressed.
( P.125)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode (the engine is not running) for
a period of time. ( P.147) 
The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.364)
 The parking brake indicator is on
Is the parking brake released? ( P.154)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.361, 371)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.63)
To stop the alarm, turn the engine
switch to IGNITION ON mode, or
start the engine.
 Is the message displayed on the
multi-information display?
Check the message on the multi-informa-
tion display. ( P.371)
 When a warning light turns on or a
warning message is displayed, refer
to P.361, 371.
The shift lever cannot be shifted
from P even if you depress the
brake pedal
The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine 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

452Alphabetical index
Identification number ...............................399
If the engine will not start .......................384
If your vehicle has to be stopped in an
emergency ................................................ 352
Ignition switch (engine switch) ............. 144
Overheating................................................. 393
Tachometer .............................................70, 73
Engine coolant.............................................. 322 Capacity ......................................................... 402
Checking ....................................................... 322
Preparing and checking before winter...........................................................................251
Engine coolant temperature gauge 70, 73
Engine immobilizer system .......................... 61
Engine oil ..........................................................319 Capacity ........................................................ 400
Checking .........................................................319
Preparing and checking before winter...........................................................................251
Warning light ............................................... 362
Engine oil maintenance data ....................321
Engine switch ..................................................144 Auto power off function ........................... 147
Changing the engine switch modes.. 147
If your vehicle has to be stopped in an
emergency ................................................ 352
Starting the engine ...................................... 144
Enhanced Vehicle Stability Control (Enhanced VSC) ...................................... 246
Enhanced VSC (Enhanced Vehicle Stabil- ity Control) .................................................. 246
EPS (Electric Power Steering) .............. 246 Function .......................................................... 246
Warning light ............................................... 363
Event data recorder (EDR) ............................7
F
Flat tire ............................................................. 375 Tire pressure warning system ............. 328
Floor mats ...........................................................22
Fluid Automatic transmission ..........................403 Brake ............................................................... 404
Washer ...........................................................325
Footwell light ..................................................274
Front passenger occupant classification system ...............................................................37
Front seats ......................................................... 113 Adjustment ....................................................... 113
Cleaning .........................................................307
Correct driving posture ............................ 23
Driving position memory .......................... 114
Head restraints............................................... 117
Memory recall function.............................. 116
Power easy access system ...................... 114
Seat heaters ..................................................270
Seat position memory ................................ 114
Seat ventilators ............................................270
Front side marker light ............................... 158 Light switch .................................................... 158
Front side marker lights Replacing light bulbs ................................346
Front turn signal lights .................................153 Replacing light bulbs ................................346
Turn signal lever .......................................... 153
Fuel ......................................................................169 Capacity ........................................................ 400
Fuel gauge ............................................... 70, 73
Fuel pump shut off system.................... 360
Information ................................................... 408
Refueling.......................................................... 169
Type ................................................................. 400
Warning light ...............................................364
Fuel consumption Average fuel economy .............................. 79
Current fuel consumption ........................ 79
Fuel filler door .................................................169 If the fuel filler do or cannot be opened
......................................................................... 386
Refueling.......................................................... 169
Fuel gauge ................................................. 70, 73
Fuel pump shut off system........................ 360
Fuses ................................................................. 342

Alphabetical index453
G
Garage door opener ................................. 293
Gauges ....................................................... 70, 73
Gear Position.....................................................81
G-force.................................................................81
Glove box ....................................................... 278
Glove box light ............................................. 278
Grocery bag hooks ....................................280
H
Hands Free Power Trunk Lid ...................102
Headlights ....................................................... 158Adaptive Front-lighting System (AFS).......................................................................... 160
Automatic High Beam system............... 161
Light switch .................................................... 158
Replacing light bulbs................................ 346
Headlights aim .............................................. 344
Head restraints ................................................ 117
Head-up display.............................................. 84 Driving information display area........... 84
Driving support system display area .. 86
Eco Driving Indicator ................................. 87
HUD (Head-up display) switch............85
Navigation system-linked display ........ 84
Pop-up display............................................... 86
Settings .............................................................. 85
Heated steering wheel .............................. 270
Heaters Air conditioning system.......................... 263
Heated steering wheel............................ 270
Outside rear view mirrors .................... 264
Seat heaters .................................................. 270
High mounted stoplight Replacing light bulbs................................ 346
Hill-start assist control ............................... 246
Hood ...................................................................316 Open .................................................................316
Hooks Cargo hooks................................................280
Coat hooks ................................................... 292 Grocery bag hooks................................. 280
Retaining hooks (floor mat) ..................... 22
Horn ....................................................................120
HUD (Head-up display) switch ................ 85
I
I/M test ..............................................................313
Identification Engine............................................................. 399
Vehicle ........................................................... 398
Ignition switch (engine switch).................144 Auto power off function............................147
Changing the engine switch modes ..147
If your vehicle has to be stopped in an emergency .................................................352
Starting the engine ......................................144
Immobilizer system.......................................... 61
Indicators ........................................................... 68
Initialization Items to initialize ........................................ 430
Maintenance...................................... 309, 321
Power windows ............................................124
Tire pressure warning system ............. 332
Inside rear view mirror ................................120
Instrument panel light control ............72, 76
Interior lights...................................................274
Intuitive parking assist........................ 212, 213 Function ............................................................213
Warning message .......................................216
J
JackPositioning a floor jack ............................. 316
Vehicle-equipped jack ........................... 376
Jack handle .................................................... 376
Jam protection function Electronic roof sunshade ........................ 130
Moon roof ....................................................... 127
Panoramic moon roof .............................. 130
Power trunk opener an d closer .......... 103
Power windows ............................................124

458Alphabetical index
Steering wheel ................................................. 119Adjustment....................................................... 119
Heated steering wheel............................ 270
Meter control switches .............................. 78
Power easy access system .......................114
Steering wheel position memory ..........114
Stop lights Replacing light bulbs................................ 346
Storage feature .............................................277
Stuck If the vehicle becomes stuck................395
Suggestion function....................................... 83
Sunshade Roof .......................................................... 127, 129
Sun visors ..........................................................281
Switches “ODO TRIP”switch ...............................71, 76
“SOS” button .................................................. 55
Automatic High Beam system............... 161
Brake Hold switch ..................................... 156
BSM (Blind Spot Monitor) switch ....205
Door lock switches ...................................... 97
Driving Mode Select switch...................210
Driving position memory switches .......114
Dynamic radar cruise control with full-speed range switch .................................196
Electronic roof sunshade switches ..... 129
Emergency flashers switch ................... 352
Engine switch................................................. 144
Garage door opener switches .......... 293
Heated steering wheel switch............. 270
HUD (Head-up display) switch............85
Ignition switch................................................ 144
Instrument panel light control switches .................................................................... 72, 76
Intuitive parking assist switch................. 214
Light switches ............................................... 158
LTA (Lane Tracing Assist) switch...... 189
Meter control switches .............................. 78
Moon roof switches ................................... 126
Outside rear view mirror switches .......121
Paddle shift switches ......................... 151, 152 Panoramic moon roof switches ...........129
Parking brake switch................................. 154
PCS OFF switch ..........................................179
PKSB (Parking Support Brake) switch
..........................................................................228
Power door lock switch ............................ 97
Power window switches ..........................124
RCD (Rear Camera Detection) switch .......................................................................... 224
RCTA switch ................................................220
Rear sunshades switch........................... 290
Rear window and outside rear view mir- ror defoggers switch ............................263
Seat heater switches.................................270
Seat ventilator switches .......................... 270
Tilt and telescopic steering control switch ............................................................... 119
Tire pressure warning reset switch... 332
Trunk closer switch .................................... 102
Trunk opener main switch...................... 105
Trunk opener switch ................................... 101
Vehicle-to-vehicle distance switch.... 196
VSC OFF switch ....................................... 247
Window lock switch.................................. 125
Windshield wiper and washer switch164
Windshield wiper de-icer switch....... 267
T
Tachometer............................................... 70, 73 Rev indicator ................................................... 75
Rev peak............................................................ 75
Tail lights........................................................... 158 Light switch .................................................... 158
Replacing light bulbs ................................346
Theft deterrent system Alarm................................................................... 63
Engine immobilizer system........................61
Tire inflation pressure ................................ 336 Maintenance data ..................................... 405
Tire inflation pressure display function..........................................................................328
Warning light .............................................. 365