2021 LEXUS ES350 key battery

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

Alphabetical index451
change ....................................................... 71, 76
Do-it-yourself maintenance ..................... 310
Door courtesy lights ....................................274
Door lock Doors.................................................................. 95
Smart access system with push-button start ................................................................. 106
Wireless remote control........................... 93
Doors ................................................................... 95 Automatic door lock ing and unlocking
system ............................................................. 98
Door glasses .................................................. 124
Door lock.......................................................... 95
Open door warning buzzer .......... 96, 98
Outside rear view mirrors ........................121
Rear door child-protectors ..................... 98
Drive distance ...................................................79
Drive info 1/Drive info 2 ...............................79
Driver’s seat position memory .................. 114 Driving position memory...........................114
Memory recall function ............................. 116
Drive-start control ........................................135
Driving................................................................134 Break-in tips ...................................................135
Correct driving posture .............................23
Driving Mode Select switch...................210
Procedures ..................................................... 134
Winter drive tips...........................................251
Driving information display .........................79
Driving Mode Select switch......................210
Driving range ....................................................79
Driving support system information display ............................................................................. 82
Dynamic radar cruise control with full- speed range..................................................195Warning message..................................... 203
Dynamic Torque Control AWD system .......................................................................... 246
E
Eco drive mode ..............................................210
Eco Driving Indicator.................... 80, 81, 87 Eco Driving Indicator Light ........................ 80
EDR (Event data recorder) ............................7
Elapsed time ......................................................79
Electric Power Steering (EPS)
Function .......................................................... 246
Warning light ...............................................363
Electronic key .................................................. 92 Battery-saving function............................ 107
If the electronic key does not operate properly .......................................................387
Replacing the battery .................................341
Electronic roof sunshade Jam protection function ........................... 130
Operation ........................................................129
Emergency, in case of If a warning buzzer sounds.................... 361
If a warning light turns on........................ 361
If a warning message is displayed .......371
If the battery is discharged ................... 389
If the electronic key does not operate properly .......................................................387
If the engine will not start....................... 384
If the fuel filler do or cannot be opened
......................................................................... 386
If the vehicle is trapped in rising water ..........................................................................353
If you have a flat tire ..................................375
If you lose your keys ................................ 386
If you think something is wrong......... 359
If your vehicle becomes stuck ............ 395
If your vehicle has to be stopped in an emergency .................................................352
If your vehicle needs to be towed .... 355
If your vehicle overheats ........................393
Emergency flashers .................................... 352
Engine ................................................................144 ACCESSORY mode................................147
Compartment............................................... 318
Engine switch .................................................144
Fuel pump shut off system.................... 360
Hood ................................................................. 316
How to start the engine ............................144

454Alphabetical index
K
Keyless entrySmart access system with push-button start ................................................................. 106
Wireless remote control........................... 93
Keys...................................................................... 92 Battery-saving function ............................107
Electronic key ................................................. 92
Engine switch................................................. 144
If the electronic key does not operate properly....................................................... 387
If you lose your keys.................................386
Key number plate ......................................... 92
Keyless entry .......................................... 95, 101
Mechanical key.............................................. 92
Replacing the battery.................................341
Warning buzzer .......................................... 106
Wireless remote control........................... 93
Knee airbags .................................................... 28
L
Lane Tracing Assist (LTA) ........................ 184 Operation....................................................... 184
Warning messages .................................... 192
Language (multi-information display) ... 82
LATCH anchors ............................................. 50
Lever Auxiliary catch lever ...................................316
Hood lock release lever...........................316
Internal trunk release lever .................... 103
Shift lever..........................................................149
Turn signal lever ...........................................153
Wiper lever.....................................................164
Lexus climate concierge ............................ 261
Lexus Enform Safety Connect.................. 55
Lexus Safety System + 2.0 ......................... 171 Automatic High Beam ............................... 161
Dynamic radar cruise control with full-speed range ............................................... 195
LTA (Lane Tracing Assist)..................... 184
PCS (Pre-Collision System).................. 177 RSA (Road Sign Assist)........................... 193
License plate lights....................................... 158 Light switch .................................................... 158
Replacing light bulbs ................................346
Light bulbs Replacing .......................................................346
Wattage ..........................................................407
Lights Automatic High Beam system ............... 161
Front interior lights .................................... 275
Front personal lights................................. 275
Headlight switch.......................................... 158
Interior lights list .......................................... 274
Interior lights ................................................. 274
Rear interior lights ..................................... 275
Rear personal lights .................................. 275
Trunk light ....................................................... 103
Turn signal lever .......................................... 153
Vanity lights ................................................... 281
Wattage ..........................................................407
Welcome light illumination control ... 159
Lock steering column ..................................145
Low profile tire.............................................. 326
LTA (Lane Tracing Assist) ........................ 184 Operation ....................................................... 184
Warning messages.....................................192
Luggage mat .................................................280
M
Maintenance Do-it-yourself maintenance ...................314
General maintenance .............................. 310
Maintenance data ..................................... 398
Maintenance requirements ................. 309
Malfunction indicator la mp ..................... 362
Master warning light .................................. 368
Menu icons........................................................ 78
Meter Changing the main meter location.......77
Clock.......................................................... 70, 73
Indicators...........................................................68
Instrument panel light control......... 72, 76

456Alphabetical index
Parking brake engaged warning buzzer.......................................................................... 155
Warning light ............................................... 367
Warning message...................................... 155
Parking lights .................................................. 158 Light switch .................................................... 158
Parking Support Brake function (rear- crossing vehicles) .......................... 227, 239
Parking Support Brake function (rear pedestrians) ..................................... 227, 243Function .......................................................... 243
Parking Support Brake function (static objects) .............................................. 227, 233Function .......................................................... 233
PCS (Pre-Collision System) ..................... 177 Function ............................................................ 177
PCS OFF switch .......................................... 179
Warning light ............................................... 367
Personal lights................................................274
PKSA (Parking Support Alert) ................ 212
PKSB (Parking Support Brake)..............227 Warning message....................................... 231
Power easy access system ......................... 114
Power outlet ....................................................281
Power steering (Elect ric power steering
system).......................................................... 246 Warning light ............................................... 363
Power trunk lid ................................................ 99
Power windows .............................................. 124 Door lock linked window operation..125
Jam protection function............................125
Operation........................................................ 124
Window lock switch ..................................125
Pre-Collision System (PCS) ..................... 177 Function ............................................................ 177
PCS OFF switch .......................................... 179
Warning light ............................................... 367
R
Radar cruise control (dynamic radar cruise control with full-speed range)...............195
Radiator ........................................................... 322 RCD (Rear Camera Detection) ........... 224
Function .......................................................... 224
Warning message ..................................... 225
RCTA (Rear Cross Traffic Alert) ......... 220
RCTA Function ..........................................................220
Warning message ....................................... 221
Rear Cross Traffic Alert (RCTA) ......... 220
Rear door sunshades ................................. 290
Rear seats Head restraints............................................... 117
Rear side marker lights .............................. 158 Light switch .................................................... 158
Rear sunshades ............................................ 290
Rear turn signal lights ..................................153 Replacing light bulbs ................................346
Turn signal lever .......................................... 153
Rear view mirror Inside rear view mirror ............................. 120
Outside rear view mirrors........................ 121
Rear window defogger ............................. 264
Refueling ...........................................................169 Capacity ........................................................ 400
Fuel types ...................................................... 400
If the fuel filler do or cannot be opened
......................................................................... 386
Opening the fuel tank cap ..................... 169
Remote Touch .............................................. 256
Replacing Electronic key battery ................................341
Fuses................................................................. 342
Light bulbs .....................................................346
Tires ..................................................................375
Resetting the message indicating mainte- nance is required ...................................... 309
Rev indicator .................................................... 75
Rev peak............................................................. 75
Road Sign Assist ............................................193
RSA (Road Sign Assist) ..............................193S
SCB (Secondary Collision Brake) ....... 246

460Alphabetical index
Brake Override System ......................... 363
Brake system .................................................361
Charging system ....................................... 362
Downshifting ....................................... 152, 152
Drive-Start Control .................................. 363
Electric power steering .......................... 363
Engine ............................................................. 362
High coolant temperature ......................361
Intuitive parking assist................... 219, 365
Low engine oil pressure......................... 362
LTA (Lane Tracing Assist)......... 184, 365
Open door..............................................96, 98
Open hood...................................................... 98
Open trunk ...................................................... 98
Open window ...............................................125
PKSA (Parking Support Alert) ............. 213
PKSB (Parking Support Brake) .........366
Pre-collision braking.................................. 177
RCD (Rear Camera Detection) ........366
RCTA (Rear Cross Traffic Alert) ......366
Seat belt .......................................................... 364
Warning lights.................................................361 ABS .................................................................. 363
Brake hold operated indicator ...........368
Brake Override System ......................... 363
Brake system .................................................361
Charging system ....................................... 362
Drive-Start Control .................................. 363
Electric power steering .......................... 363
High coolant temperature ......................361
Intuitive parking assist OFF indicator.........................................................................365
Low engine oil pressure......................... 362
Low fuel level ............................................... 364
LTA indicator ...............................................365
Malfunction indicator lamp................... 362
Master warning light ................................368
Parking brake indicator .......................... 367
PKSB OFF indicator ................................366
Pre-collision system ................................. 367
RCD OFF indicator .................................366
RCTA OFF indicator...............................366 Seat belt reminder light...........................364
Slip indicator ................................................. 367
SRS ....................................................................362
Tire pressure ............................................... 365
Warning messages ....................................... 371
Washer ..............................................................164 Checking .......................................................325
Preparing and checking before winter........................................................................... 251
Switch................................................................ 164
Washing and waxing.................................. 304
Weight Cargo capacity .............................................. 141
Load limits ........................................................ 141
Weight............................................................ 398
Wheel lock key............................................. 376
Wheels ............................................................. 338 Size ................................................................... 405
Window lock switch .....................................125
Windows ........................................................... 124 Power windows ............................................124
Rear window defogger........................... 264
Washer ............................................................ 164
Windshield wiper de-icer ........................ 268
Windshield wipers ........................................164 Position..............................................................167
Rain-sensing windshield wipers .......... 164
Winter driving tips.........................................251
Wireless charger ......................................... 283
Wireless remote control ............................. 93 Battery-Saving Function.......................... 107
Locking/Unlocking ..................................... 93
Replacing the battery .................................341
For information regarding the equipment listed below, refer to
the “NAVIGATION AND MUL-
TIMEDIA SYSTEM OWNER’S
MANUAL”.