2016 Lexus ES350 key battery

5038-2. Steps to take in an emergency
ES350_OM_OM33B64U_(U)
8
When trouble arises
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine is stopped.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle is not
in use, due to natural discharg e and the draining effects of certain electrical appliances. 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 battery
●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 discharged.
Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery discharged, be
especially careful when reconnecting the battery.

556What to do if... (Troubleshooting)
ES350_OM_OM33B64U_(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. 9 1 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 9 2 )
●Is the electronic key battery weak or depleted? ( P. 4 5 1 )
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 1 5 2 )
●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. 1 0 8 )
●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. 9 6 )
●The function to prevent the electronic ke y from being left inside the trunk will
operate and you can open the trunk as usual. Take the key out from the trunk.
( P. 1 0 1 )
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

557What to do if... (Troubleshooting)
ES350_OM_OM33B64U_(U)
●Did you press the engine switch while firmly depressing the brake pedal?
(P. 1 5 1 )
●Is the shift lever in P? ( P. 1 5 3 )
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 0 6 )
●Is the steering wheel unlocked? ( P. 1 5 4 )
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 500)
●Is the battery discharged? ( P. 5 0 1 )
●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. 4 9 8 )
●It is locked automatically to prevent theft of the vehicle. ( P. 1 5 3 )
●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. 1 2 9 )
●The auto power off function will be oper ated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( P. 1 5 3 )
If you think something is wrong
The engine 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 engine is stopped
The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically

562Alphabetical index
ES350_OM_OM33B64U_(U)
Child restraint systemBooster seats, definition ......................51
Booster seats, installation..................60
Convertible seats, definition ..............51
Convertible seats, installation ........ 58
Front passenger occupant classification system ......................... 44
Infant seats, definition ............................51
Infant seats, installation ...................... 58
Installing CRS with LATCH anchors .....................56
Installing CRS with seat belts ......... 58
Installing CRS with top tether strap ...........................61
Child safety ................................................ 50 Airbag precautions .............................. 37
Battery precautions ........................... 434, 504
Child restraint system ...........................51
How your child should wear the seat belt ............................................31
Installing child restraints.....................55
Moon roof precautions.................... 135
Power window lock switch ............ 129
Power window precautions ............ 131
Rear door child-protectors .............96
Removed electronic key battery precautions...............452
Seat belt extender precautions ........................................... 33
Seat belt precautions .......................... 33
Seat heater precautions.................. 373
Trunk precautions............................... 102 Child-protectors ......................................96
Cleaning
Aluminum wheels ..............................409
Exterior .................................................. 408
Interior .........................................................411
Seat belts.................................................. 412
Clock......................................................... 385
Coat hooks ............................................. 390
Condenser................................................ 431
Console box ............................................379
Console box light ..................................379
Consumption screen ............................. 84
Cooling system Engine overheating ......................... 505
Cruise control Cruise control ....................................... 217
Dynamic radar cruise control .....205
Cup holders............................................ 380
Curtain shield airbags ........................... 35
Customizable features ...................... 533
Daytime running light system............ 162
Defogger Front windshield.................................368
Outside rear view mirrors ............368
Rear window........................................368
Dimension ................................................. 512
Dinghy towing .........................................150
Display Dynamic radar cruise control .....205
LDA (Lane Departure Alert with steering control) .....................196
Multi-information display.................. 78
Trip information ..................................... 85
Warning message............................. 482
D

563Alphabetical index
ES350_OM_OM33B64U_(U)
Display Audio system ......................... 266Display settings ...................................282
Setup menu ........................................... 276
Do-it-yourself maintenance ...............421
Door courtesy lights Location ..................................................375
Wattage ................................................. 520
Doors Automatic door locking and unlocking system......................96
Door glasses ......................................... 129
Door lock ..................................................95
Outside rear view mirrors .............. 126
Rear door child-protector................96
Driver’s seat position memory ........... 115 Driving position memory .................. 116
Memory recall function...................... 117
Power easy access system .............. 115
Driving Break-in tips .......................................... 139
Correct driving posture .................... 28
Driving mode select switch ..........245
Procedures ............................................ 138
Winter drive tips ................................ 260
Dynamic radar cruise control Function ................................................. 205
Eco drive mode ..................................... 245
Eco Driving Indicator............................. 82
EDR (Event data recorder) ...................10 Electric Power Steering (EPS)
Function .................................................. 256
Warning light ........................................477
Electronic key ........................................... 90 Battery-saving function ................... 108
If the electronic key does not operate properly ............................ 499
Replacing the battery ........................451
Emergency, in case of If a warning buzzer sounds ................................................. 476
If a warning light turns on .............. 476
If a warning message is displayed ........................................ 482
If the battery is discharged............. 501
If the electronic key does not operate properly ........ 499
If the engine will not start ............... 496
If the shift lever cannot be shifted from P ............498
If you have a flat tire ..........................485
If you think something is wrong .............................................. 474
If your vehicle becomes stuck..................................................... 508
If your vehicle has to be stopped in an emergency.......... 469
If your vehicle needs to be towed ....................................... 470
If your vehicle overheats ............... 505
Emergency flashers ............................ 468
E
*: For vehicles with navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

566Alphabetical index
ES350_OM_OM33B64U_(U)
Inside rear view mirror ......................... 124
Instrument panel light control ............ 75
Interior light............................................. 375
Intuitive parking assistFunction ..................................................220
Jack Positioning a floor jack .................... 424
Vehicle-equipped jack .................. 486
Jack handle ................................................. 486
Jam protection function Moon roof .............................................. 133
Power trunk opener and closer.............................................. 101
Power windows ................................... 129
Keyless entry Smart access system with push-button start ..................... 93
Wireless remote control ................... 93
Keys Battery-saving function ....................108
Electronic key .........................................90
Engine switch .......................................... 151
If the electronic key does not operate properly ....... 499
Key number plate .................................90
Keyless entry ........................................... 93
Mechanical key ......................................90
Replacing the battery ........................ 451
Warning buzzer .................................. 107
Wireless remote control key .......... 93
Knee airbags ............................................. 35 Language
(multi-information display)............ 534
LATCH anchors .......................................56
LDA (Lane Departure Alert with steering control).................................. 196
Lever Auxiliary catch lever ......................... 423
Hood lock release lever................. 423
Internal trunk release lever .............. 101
Shift lever .................................................156
Turn signal lever ...................................159
Wiper lever.............................................169
Lexus Display Audio system ............266 Display settings ................................... 282
Setup menu .......................................... 276
Lexus Enform
*
Lexus Enform Remote*.....................362
Lexus Enform Safety Connect ....... 402
Lexus Safety System+ .......................... 176
License plate lights Light switch.............................................. 161
Replacing light bulbs ....................... 464
Light bulbs Replacing ............................................... 456
Wattage .................................................520
J
K
L

569Alphabetical index
ES350_OM_OM33B64U_(U)
Rear door sunshades .......................... 387
Rear sunshadeOperation ..............................................387
Reverse operation feature............ 388
Rear turn signal lights Replacing light bulbs ........................462
Turn signal lever .................................. 159
Wattage ................................................. 520
Rear view mirror Inside rear view mirror ......................124
Outside rear view mirrors .............. 126
Rear window defoggers .................... 368
Refueling .................................................... 173 Capacity .................................................. 514
Fuel types ................................................ 514
Opening the fuel tank cap...............174
When the fuel filler door cannot be opened .......................... 175
Remote Touch
*
Replacing Electronic key battery ....................... 451
Fuses.........................................................453
Light bulbs ............................................ 456
Tires ......................................................... 485
Reporting safety defects for U.S. owners................................... 546
Resetting the message indicating maintenance is required ..................415 Safety Connect ..................................... 402
Seat belts
Adjusting the seat belt........................ 30
Automatic Locking Retractor .......... 31
Child restraint system installation ............................................. 58
Cleaning and maintaining the seat belt ......................................... 412
Emergency Locking Retractor.................................................. 31
How to wear your seat belt............. 30
How your child should wear the seat belt ............................................ 31
Pregnant women, proper seat belt use ..........................................32
Reminder light and buzzer ............477
Seat belt extender .................................. 31
Seat belt pretensioners........................ 31
SRS warning light .............................. 476
Seat heaters.............................................374
Seat position memory ........................... 115
Seat ventilators.......................................374
Seating capacity ..................................... 148
S
*: For vehicles with navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

574Alphabetical index
ES350_OM_OM33B64U_(U)
Window glasses ......................................129
Window lock switch ..............................129
WindowsPower windows ................................... 129
Rear window defogger.................. 368
Windshield wiper de-icer ................. 369
Windshield wipers Intermittent windshield wipers with interval adjuster ...... 169
Position.................................................... 262
Rain-sensing windshield wipers .................................................... 170
Winter driving tips................................ 260
Wireless remote control key Battery-Saving Function..................108
Locking/Unlocking.............................. 93
Replacing the battery ........................ 451
WMA disc
*............................................ 299
*: For vehicles with navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.