2018 Lexus ES300h key battery

584What to do if... (Troubleshooting)
ES300h_OM_OM33D45U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne w genuine mechanical keys can be made
by your Lexus dealer. ( →P. 105)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. (→ P. 107)
●Is the electronic key battery weak or depleted? ( →P. 478)
●Is the power switch in ON mode?
When locking the doors, turn the power switch off. (→P. 169)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
(→ P. 123)
●Is the child-protector lock set?
The rear door cannot be opened from in side the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
(→ P. 111)
●The function to prevent the electronic key from being left inside the trunk will
operate and you can open th e trunk as usual. Take the key out from the trunk.
(→ P. 116)
If you have a problem, check the foll owing 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

585What to do if... (Troubleshooting)
ES300h_OM_OM33D45U_(U)
●Did you press the power switch while firmly depressing the brake pedal? \
(→P. 168)
●Is the shift lever in P? ( →P. 170)
●Is the electronic key anywhere detectable inside the vehicle? ( →P. 121)
●Is the steering wheel unlocked? (→ P. 171)
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( →P. 526)
●Is the 12-volt battery discharged? ( →P. 527)
●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. 178)
●It is locked automatically to prevent theft of the vehicle. ( →P. 170)
●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. 145)
If you think something is wrong
The hybrid system does not start
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

590Alphabetical index
ES300h_OM_OM33D45U_(U)
CareAluminum wheels ............................... 431
Exterior................................................... 430
Interior .....................................................433
Seat belts ................................................434
Cargo capacity........................................165
Cargo hooks .......................................... 403
CD player
*.............................................. 318
Chains ........................................................ 281
Child restraint system Booster seats, definition ....................53
Booster seats, installation.................. 62
Convertible seats, definition ............ 53
Convertible seats, installation .........60
Front passenger occupant classification system ......................... 46
Infant seats, definition .......................... 53
Infant seats, installation .......................60
Installing CRS with LATCH anchors .................... 58
Installing CRS with seat belts ..........60
Installing CRS with top tether strap ......................... 63
Child safety ................................................ 52 12-volt battery precautions .......... 530
Airbag precautions .............................. 39
Child restraint system ......................... 53
How your child should wear the seat belt .......................................... 33
Installing child restraints..................... 57
Moon roof precautions...................... 151 Power window lock switch.............145
Power window precautions ........... 147
Rear door child-protectors ............... 111
Removed electronic
key battery precautions .............. 479
Seat belt extender precautions .......................................... 35
Seat belt precautions .......................... 56
Seat heater precautions ................. 394
Trunk precautions ................................. 117
Child-protectors ....................................... 111
Cleaning Aluminum wheels ................................ 431
Exterior ...................................................430
Interior ..................................................... 433
Seat belts................................................ 434
Clock......................................................... 406
Coat hooks ............................................... 410
Condenser.............................................. 454
Console box ........................................... 400
Console box light ................................. 400
Consumption screen ..............................99
Cooling system Hybrid system overheating ............531
Cruise control Dynamic radar cruise control ..... 225
Cup holders.............................................. 401
Curtain shield airbags ............................ 37
Customizable features ...................... 560
C

591Alphabetical index
ES300h_OM_OM33D45U_(U)
Daytime running light system ........... 183
DefoggerFront windshield ................................ 388
Outside rear view mirrors ............ 388
Rear window ....................................... 388
Dimension ...............................................538
Dinghy towing.......................................... 167
Display Dynamic radar cruise control...... 225
LDA (Lane Departure Alert with steering control) .................... 216
Multi-information display ....................91
Trip information ..................................... 87
Warning message ............................ 509
Display Audio system ......................... 286 Display settings .................................. 303
Setup menu .......................................... 298
Do-it-yourself maintenance ............. 443
Door courtesy lights Location ................................................. 396
Wattage ................................................. 546
Doors Automatic door locking and unlocking system........................ 111
Door glasses ......................................... 145
Door lock .................................................. 110
Outside rear view mirrors ...............142
Rear door child-protector.................. 111 Driver’s seat position memory..........130
Driving position memory...................131
Memory recall function .................... 132
Power easy access system ............ 130
Driving Break-in tips ...........................................156
Correct driving posture .................... 30
Driving mode select switch .......... 262
Hybrid vehicle driving tips ............ 278
Procedures .............................................154
Winter drive tips ................................280
Dynamic radar cruise control Function .................................................. 225
Eco drive mode......................................262
EDR (Event data recorder).....................11
Electric motor (traction motor).......... 67
Electric Power Steering (EPS) Function ...................................................273
Warning light .......................................504
Electronic key .......................................... 104 Battery-saving function .................... 123
If the electronic key does not operate properly ............................ 525
Replacing the battery ...................... 478
D
E
*: For vehicles with navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

592Alphabetical index
ES300h_OM_OM33D45U_(U)
Emergency, in case ofIf a warning buzzer sounds................................................. 503
If a warning light turns on.............. 503
If a warning message is displayed ....................................... 509
If the 12-volt battery is discharged ......................................... 527
If the electronic key does not operate properly ....... 525
If the hybrid system will not start ................................................523
If you have a flat tire ........................... 513
If you think something is wrong.............................................. 502
If your vehicle becomes stuck ..................................................... 535
If your vehicle has to be stopped in an emergency .......... 497
If your vehicle needs to be towed ...................................... 498
If your vehicle overheats ................. 531
Emergency flashers ............................. 496
Energy monitor .........................................97 Engine
Accessory mode .................................169
Compartment ..................................... 447
Hood........................................................ 445
How to start the hybrid system ................................................... 168
Identification number.......................540
Ignition switch (power switch) ..... 168
Overheating...........................................531
Power switch. ....................................... 168
Engine compartment cover............. 448
Engine coolant Capacity................................................. 543
Checking ............................................... 453
Preparing and checking before winter ....................................280
Engine coolant temperature gauge ........................................................ 86
Engine oil Capacity...................................................541
Checking ............................................... 449
Preparing and checking before winter ....................................280

595Alphabetical index
ES300h_OM_OM33D45U_(U)
I/M test ..................................................... 442
IdentificationEngine ..................................................... 540
Vehicle ................................................... 539
Ignition switch (power switch) ......... 168
Illuminated entry system .................... 398
Immobilizer system..................................76
Indicators .................................................... 84
Initialization Maintenance......................................... 437
Tire pressure warning system................................462
Initiators (tire pressure warning system)................................. 469
Inside rear view mirror ........................ 140
Instrument panel light control ............ 87
Interior light............................................. 396
Intuitive parking assist Function .................................................. 237 Jack
Positioning a floor jack.................... 446
Vehicle-equipped jack .....................514
Jack handle ...................................................514
Jam protection function Moon roof ...............................................149
Power trunk opener and closer ............................................. 116
Power windows....................................145
Keyless entry Smart access system with push-button start................... 108
Wireless remote control................. 108
Keys Battery-saving function .................... 123
Electronic key ........................................104
If the electronic key does not operate properly ........ 525
Key number plate ................................104
Keyless entry ......................................... 108
Mechanical key.................................... 105
Power switch ........................................ 168
Replacing the battery ...................... 478
Warning buzzer................................... 122
Wireless remote control key ........ 108
Knee airbags .............................................. 37
IJ
K
*: For vehicles with navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

599Alphabetical index
ES300h_OM_OM33D45U_(U)
Rear turn signal lightsReplacing light bulbs ....................... 490
Turn signal lever ..................................180
Wattage ................................................. 546
Rear view mirror Inside rear view mirror ..................... 140
Outside rear view mirrors ...............142
Rear window defoggers ....................388
Refueling ....................................................194 Capacity ................................................ 540
Fuel types .............................................. 540
Opening the fuel tank cap.............. 196
When the fuel filler door cannot be opened .......................... 196
Regenerative braking ............................ 69
Remote Touch
*
Replacing Electronic key battery ......................478
Fuses........................................................ 480
Light bulbs ............................................ 483
Tires ........................................................... 513
Reporting safety defects for U.S. owners................................... 574
Resetting the message indicating maintenance is required ................ 437
Road accident cautions .........................74 Safety Connect ......................................422
Seat belts
Adjusting the seat belt.........................32
Automatic Locking Retractor ........ 33
Child restraint system installation ............................................. 60
Cleaning and maintaining the seat belt ....................................... 434
Emergency Locking Retractor................................................ 33
How to wear your seat belt..............32
How your child should wear the seat belt .......................................... 33
Pregnant women, proper seat belt use ......................................... 34
Reminder light and buzzer ...........504
Seat belt extender ................................ 34
Seat belt pretensioners...................... 33
SRS warning light ..............................503
Seat heaters............................................ 395
Seat position memory ..........................130
Seat ventilators...................................... 395
Seating capacity ..................................... 165
S
*: For vehicles with navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

605Alphabetical index
ES300h_OM_OM33D45U_(U)
WeightCargo capacity .................................... 165
Load limits............................................... 165
Weight.................................................... 538
Welcome light illumination control..................................................... 109
Wheels Replacing wheels ............................... 474
Size ........................................................... 545
Window glasses ......................................145
Window lock switch ..............................145
Windows Power windows ................................... 145
Rear window defogger.................. 388
Windshield wiper de-icer .................389
Windshield wipers Intermittent windshield wipers with interval adjuster ...... 190
Position....................................................282
Rain-sensing windshield wipers ...................................................... 191
Winter driving tips................................280
Wireless remote control key Battery-Saving Function...................123
Locking/Unlocking............................108
Replacing the battery .......................478
WMA disc
*............................................. 318
*: For vehicles with navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.