2022 LEXUS ES350 key battery

3787-2. Steps to take in an emergency
1Ensure 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. 4
Press the engine switch shortly and
firmly.
In the event that the engine still cannot
be started, contact your Lexus dealer.
■Stopping the engine
Set the parking brake, shift the shift lever to
P and press the engine switch as you nor-
mally do when stopping the engine.
■Electronic key battery
As the above procedure is a temporary
measure, it is recommended that the elec-
tronic key battery be replaced immediately
when the battery is depleted. ( P.333)
■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.
■Changing engine switch modes
Release the brake pedal and press the
engine switch in step 3 above.
The engine does not start and modes will be
changed each time the switch is pressed.
(  P.147)
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

3797-2. Steps to take in an emergency
7
When trouble arises
If you have a set of jumper (or booster)
cables and a second vehicle with a 12-
volt battery, you can jump start your
vehicle using the following procedure.1
Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
( P.61)
2 Open the hood. ( P.310)
3 Connect a positive jumper cable clamp to on your vehicle and connect the
clamp on the other end of the positive cable to on the second vehicle.
Then, connect a negative cable clamp to on the second vehicle and con-
nect the clamp at the other end of the negative cable to .
2GR-FKS engine
Positive (+) battery terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the battery and any mov-
If the battery is discharged
The following procedures may be
used to start the engine if the bat-
tery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the engine
A
B
C
D
A
B
C
D

3817-2. Steps to take in an emergency
7
When trouble arises
When the battery is depleted, have the
vehicle inspected at your Lexus dealer.
●Some systems may require initialization.
( P.419)
■When removing the battery terminals
When the battery terminals are removed,
the information stored in the ECU is
cleared. Before removing 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 what 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.
• If the 20 hour rate capacity is low, even if the time period where the vehicle is not
used is a short time, the battery may dis-
charge and engine may not be able to
start.
●For details, consult your Lexus dealer.
WARNING
■When removing the battery termi-
nals
Always remove the negative (-) terminal
first. If the positive (+) terminal contacts
any metal in the surrounding area when
the positive (+) terminal is removed, a
spark may occur, leading to a fire in addi-
tion to electrical shocks and death or
serious injury.
■Avoiding battery fires or explosions
Observe the following precautions to
prevent accidentally igniting the flamma-
ble gas that may be emitted from the bat-
tery:
●Make sure each jumper cable is con-
nected to the correct terminal and that
it is not unintentionally in contact with
any other than the intended terminal.
●Do not allow the other end of the
jumper cable connected to the “+” ter-
minal to come into contact with any
other parts or metal surfaces in the
area, such as brackets or unpainted
metal.
●Do not allow the + and - clamps of the
jumper cables to come into contact
with each other.
●Do not smoke, use matches, cigarette
lighters or allow open flame near the
battery.
■Battery precautions
The battery contains poisonous and cor-
rosive acidic electrolyte, while related
parts contain lead and lead compounds.
Observe the following precautions when
handling the battery:

434What to do if... (Troubleshooting)
1-1. W hat to do if.. . (Troubleshoo ting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.375)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.375)
 Is the electronic key battery weak or
depleted? ( P.333)
 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.109) 
Is the child-protector lock set?
The rear door cannot be opened
from inside the vehicle when the
lock is set.
Open the rear d oor from outside
and then unlock the child-protector
lock. ( P.99)
 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.104)
 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.108)
 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

438Alphabetical index
C
Card key ............................................................ 92
Care ........................................................298, 301Aluminum wheels ......................................298
Exterior ...........................................................298
Interior .............................................................. 301
Seat belts......................................................... 301
Cargo capacity...............................................142
Cargo hooks ................................................. 279
Center Display ............................................. 258
Chains .............................................................. 252
Child-protectors............................................. 99
Child restraint system................................... 43 Fixed with a LATCH system ..................50
Fixed with a seat belt....................................47
Front passenger occupant classification system ..............................................................37
Points to remember .................................... 43
Riding with children ..................................... 43
Types of child restraint system installation method ........................................................... 44
Using an anchor bracket .......................... 53
Child safety ....................................................... 43 Airbag precautions...................................... 33
Battery precautions .........................318, 381
Child restraint system................................. 44
Heated steering wheel and seat heater precautions................................................ 269
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................ 127
Panoramic moon roof precautions... 130
Power window lock switch..................... 124
Power window precautions ................... 124
Rear door child-protectors ..................... 99
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 43
Trunk precautions ...................................... 100
Cleaning ................................................298, 301 Aluminum wheels ......................................298
Exterior ...........................................................298 Interior .............................................................. 301
Radar sensor ....................................... 171, 209
Seat belts ......................................................... 301
Clock .................................................68, 71, 280
Coat hooks.....................................................288
Compass ......................................................... 294
Condenser .......................................................316
Console box ................................................... 277
Console box light .........................................277
Cooling system...............................................316 Engine overheating...................................382
Cornering lights ............................................ 160 Replacing light bulbs............................... 338
Cruise control Dynamic radar cruise control with full-speed range ............................................... 198
Cup holder ......................................................277
Current fuel consumption .......................... 78
Curtain shield airbags .................................. 28
Customizable features ..............................408
Custom mode .................................................213
D
Daytime running light system .................. 158
Defogger Outside rear view mirrors.....................263
Rear window ................................................263
Windshield ....................................................263
Dimension ......................................................388
Dinghy towing.................................................143
Display BSM (Blind Spot Monitor)................... 208
Dynamic radar cruise control with full-speed range ............................................... 198
Head-up display............................................83
Intuitive parking assist ................................216
LTA (Lane Tracing Assist) ....................... 191
Multi-information display .......................... 76
Parking Support Brake function (rear pedestrians)............................................... 244
RCD (Rear Camera Detection) ........ 229
RCTA............................................................... 223

Alphabetical index439
Warning message..................................... 224
Distance until next engine oil change .. 70, 74
Do-it-yourself maintenance .................... 304
Door courtesy lights ................................... 273
Door lock Doors.................................................................. 96
Smart access system with push-button start ..................................................................107
Wireless remote control........................... 94
Doors ................................................................... 96 Automatic door locking and unlocking system ............................................................. 99
Door glasses .................................................. 123
Door lock.......................................................... 96
Open door warning buzzer ................... 99
Outside rear view mirrors ......................120
Rear door child-protectors ..................... 99
Drive distance .................................................. 78
Drive info 1/Drive info 2 .............................. 78
Driver’s seat position memory .................. 113 Driving position memory.......................... 113
Memory recall function ............................. 115
Drive-Start Control (DSC) Sudden start restraint control................139
Driving................................................................134 Break-in tips ...................................................135
Correct driving posture .............................23
Driving Mode Select switch................... 213
Procedures .....................................................134
Winter drive tips...........................................251
Driving information display ......................... 77
Driving Mode Select switch......................213
Driving range ................................................... 78
Driving support system information display .............................................................................80
DSC (Drive-Start Control) Sudden start restraint control................139
Dynamic radar cruise control with full- speed range ................................................. 198 Warning message..................................... 207
Dynamic Torque Control AWD system .......................................................................... 246
E
Eco drive mode ..............................................213
Eco Driving Indicator................... 79, 80, 86
Eco Driving Indicator Light .........................79
EDR (Event data recorder) ........................... 8
Elapsed time ..................................................... 78
Electric Power Steering (EPS)
Function ..........................................................246
Warning light ...............................................353
Electronic key .................................................. 92 Battery-saving function............................ 109
If the electronic key does not operate properly .......................................................376
Replacing the battery...............................333
Electronic roof sunshade Jam protection function ............................129
Operation ....................................................... 128
Emergency, in case of If a warning buzzer sounds.................... 351
If a warning light turns on........................ 351
If a warning message is displayed ...... 361
If the battery is discharged ....................379
If the electronic key does not operate properly .......................................................376
If the engine will not start........................ 374
If the fuel filler door cannot be opened ..........................................................................376
If the vehicle is submerged or water on the road is rising ......................................345
If you have a flat tire ................................. 365
If you lose your keys ................................. 375
If you think something is wrong..........349
If your vehicle becomes stuck ............ 385
If your vehicle has to be stopped in an emergency................................................. 344
If your vehicle needs to be towed ..... 347
If your vehicle overheats ........................382
Emergency flashers .................................... 344
Engine ................................................................144 ACCESSORY mode................................147

442Alphabetical index
Jack handle .................................................... 366
Jam protection functionElectronic roof sunshade.........................129
Moon roof .......................................................126
Panoramic moon roof............................... 129
Power trunk opener and closer .......... 105
Power windows............................................ 123
K
Keyless entrySmart access system with push-button start ..................................................................107
Wireless remote control........................... 94
Keys...................................................................... 92 Battery-saving function ........................... 109
Card key ........................................................... 92
Electronic key ................................................. 92
Engine switch.................................................144
If the electronic key does not operate properly....................................................... 376
If you lose your keys................................. 375
Key number plate ......................................... 92
Keyless entry ........................................ 96, 103
Mechanical key.............................................. 92
Replacing the battery............................... 333
Warning buzzer.......................................... 108
Wireless remote control........................... 94
Knee airbags .................................................... 28
L
Lane Tracing Assist (LTA) ........................ 186 Operation....................................................... 186
Warning messages ....................................194
Language (multi-information display) ... 80
LATCH anchors ............................................. 50
Lever Auxiliary catch lever.................................. 310
Hood lock release lever.......................... 310
Internal trunk release lever .................... 105
Shift lever..........................................................149
Turn signal lever ...........................................153 Wiper lever .................................................... 164
Lexus climate concierge .......................... 260
Lexus Enform Safety Connect.................. 55
Lexus Safety System + 2.5 ......................... 171 AHB (Automatic High Beam) ............... 161
Dynamic radar cruise control with full-speed range ............................................... 198
LTA (Lane Tracing Assist) ..................... 186
PCS (Pre-Collision System) ..................176
RSA (Road Sign Assist)........................... 195
License plate lights....................................... 158 Light switch .................................................... 158
Replacing light bulbs............................... 338
Light bulbs Replacing ...................................................... 338
Wattage ......................................................... 396
Lights AHB (Automatic High Beam) ............... 161
Front interior lights .................................... 274
Front personal lights................................. 274
Headlight switch.......................................... 158
Interior lights list .......................................... 273
Interior lights................................................. 273
Rear interior lights ..................................... 274
Rear personal lights .................................. 274
Trunk light ....................................................... 104
Turn signal lever .......................................... 153
Vanity lights ................................................. 280
Wattage ......................................................... 396
Welcome light illumination control ... 159
Lock steering column ..................................145
Low profile tire.............................................. 320
LTA (Lane Tracing Assist) ........................ 186 Operation ....................................................... 186
Warning messages.................................... 194
Luggage mat ................................................. 279
M
Maintenance Do-it-yourself maintenance ................ 308
General maintenance ............................ 304
Maintenance data ..................................... 388

444Alphabetical index
Panic mode ....................................................... 94
Panoramic moon roofJam protection function............................129
Operation........................................................128
Parking assist sensors (intuitive parking assist) ............................................................... 216
Parking brake..................................................154 Operation........................................................154
Parking brake engaged warning buzzer.......................................................................... 155
Warning light ............................................... 357
Warning message...................................... 155
Parking lights .................................................. 158 Light switch.................................................... 158
Parking Support Brake function (rear- crossing vehicles) .......................... 232, 242
Parking Support Brake function (rear pedestrians) ..................................... 232, 244 Function .......................................................... 244
Parking Support Brake function (static objects) .............................................. 232, 239 Function .......................................................... 239
PCS (Pre-Collision System) ..................... 176 Function ............................................................ 176
PCS OFF switch .......................................... 179
Warning light ............................................... 357
Personal lights............................................... 273
PKSA (Parking Support Alert) ................215
PKSB (Parking Support Brake)............. 232 Warning message..................................... 237
Power easy access system ......................... 113
Power outlet ..................................................280
Power steering (Electric power steering system) .......................................................... 246 Warning light ...............................................353
Power trunk lid .............................................. 100
Power windows ..............................................123 Door lock linked window operation.. 124
Jam protection function............................ 123
Operation........................................................ 123
Window lock switch .................................. 124
Pre-Collision System (PCS) ..................... 176 Function ............................................................176
PCS OFF switch ..........................................179
Warning light ...............................................357
R
Radar cruise control (dynamic radar cruise
control with full-speed range).............. 198
Radiator .............................................................316
RCD (Rear Camera Detection) ........... 229 Function .......................................................... 229
Warning message .....................................230
RCTA (Rear Cross Traffic Alert) ......... 223
RCTA Function .......................................................... 223
Warning message ..................................... 224
Rear Cross Traffic Alert (RCTA) ......... 223
Rear door sunshades ................................. 287
Rear seats Head restraints............................................... 116
Rear side marker lights .............................. 158 Light switch .................................................... 158
Replacing light bulbs............................... 338
Rear sunshades ............................................ 286
Rear turn signal lights ..................................153 Replacing light bulbs............................... 338
Turn signal lever .......................................... 153
Rear view mirror Inside rear view mirror ............................... 119
Outside rear view mirrors...................... 120
Rear window defogger ............................. 263
Refueling ...........................................................169 Capacity ........................................................ 390
Fuel types ...................................................... 390
If the fuel filler door cannot be opened..........................................................................376
Opening the fuel tank cap ..................... 169
Remote Touch .............................................. 256
Replacing Electronic key battery..............................333
Fuses.................................................................335
Light bulbs .................................................... 338
Tires ................................................................. 365