2017 Lexus ES350 key battery

506
ES350_OM_OM33C68U_(U)8-2. Steps to take in an emergency
If the battery is discharged
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 by following the steps below.
Confirm that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depending on the situa-
tion, the alarm may activate and doors
locked. ( →P. 6 8 )
Open the hood ( →P. 4 2 9 )
Remove the engine cover.
The following procedures may be used to start the engine if the vehicle’s bat-
tery is discharged.
You can also call your Lexus dealer or a qualified repair shop.
1
2
3

5088-2. Steps to take in an emergency
ES350_OM_OM33C68U_(U)
■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 discharge 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.

560What to do if... (Troubleshooting)
ES350_OM_OM33C68U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys can be made
by your Lexus dealer. ( →P. 9 3 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( →P. 9 4 )
●Is the electronic key battery weak or depleted? ( →P. 4 5 7 )
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( →P. 1 5 5 )
●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 1 0 )
●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 8 )
●The function to prevent the electronic 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. 1 0 3 )
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

561What to do if... (Troubleshooting)
ES350_OM_OM33C68U_(U)
●Did you press the engine switch while firmly depressing the brake pedal?
(→ P. 1 5 4 )
●Is the shift lever in P? (→ P. 1 5 6 )
●Is the electronic key anywhere detectable inside the vehicle? ( →P. 1 0 8 )
●Is the steering wheel unlocked? ( →P. 1 5 7 )
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. ( →P. 5 0 5 )
●Is the battery discharged? ( →P. 5 0 6 )
●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. 1 6 2 )
●It is locked automatically to prevent theft of the vehicle. ( →P. 1 5 6 )
●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 3 1 )
●The auto power off function will be operated 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 6 )
If you think something is wrong
The engine does not start
The shift lever cannot be shifted fr om 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

566Alphabetical index
ES350_OM_OM33C68U_(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...........................440, 509
Child restraint system ...........................51
How your child should wear the seat belt ............................................31
Installing child restraints.....................55
Moon roof precautions.....................137
Power window lock switch .............. 131
Power window precautions .......... 133
Rear door child-protectors .............98
Removed electronic key battery precautions.............. 458
Seat belt extender precautions........................................... 33
Seat belt precautions .......................... 33
Seat heater precautions.................. 377
Trunk precautions............................... 104 Child-protectors ..................................... 98
Cleaning
Aluminum wheels ................................415
Exterior ..................................................... 414
Interior ....................................................... 417
Seat belts..................................................418
Clock......................................................... 389
Coat hooks ............................................. 394
Condenser...............................................437
Console box........................................... 383
Console box light ................................. 383
Consumption screen ............................. 86
Cooling system Engine overheating ........................... 510
Cruise control Cruise control ..................................... 220
Dynamic radar cruise control .....208
Cup holders............................................ 384
Curtain shield airbags ........................... 35
Customizable features ...................... 538
Daytime running light system............ 166
Defogger
Front windshield..................................372
Outside rear view mirrors .............372
Rear window .........................................372
Dimension ................................................. 516
Dinghy towing ......................................... 153
Display
Dynamic radar cruise control .....208
LDA (Lane Departure Alert with steering control) .....................199
Multi-information display..................80
Trip information ..................................... 87
Warning message............................ 488
D

567Alphabetical index
ES350_OM_OM33C68U_(U)
Display Audio system ......................... 270Display settings ................................... 287
Setup menu ...........................................282
Do-it-yourself maintenance ..............427
Door courtesy lights Location ..................................................379
Wattage ..................................................524
Doors
Automatic door locking and unlocking system......................98
Door glasses ........................................... 131
Door lock .................................................. 97
Outside rear view mirrors .............. 128
Rear door child-protector................98
Driver’s seat position memory ........... 117 Driving position memory .................. 118
Memory recall function...................... 119
Power easy access system .............. 117
Driving Break-in tips ...........................................142
Correct driving posture ....................28
Driving mode select switch ..........248
Procedures ............................................ 140
Winter drive tips ................................. 263
Dynamic radar cruise control Function ................................................. 208
Eco drive mode ..................................... 248
Eco Driving Indicator............................. 84
EDR (Event data recorder) ...................10 Electric Power Steering (EPS)
Function .................................................. 259
Warning light .......................................483
Electronic key ............................................92
Battery-saving function ..................... 110
If the electronic key does not operate properly ............................504
Replacing the battery ...................... 457
Emergency, in case of If a warning buzzer
sounds ................................................. 482
If a warning light turns on .............. 482
If a warning message is displayed ....................................... 488
If the battery is discharged........... 506
If the electronic key does not operate properly........504
If the engine will not start ...............502
If you have a flat tire ............................491
If you think something
is wrong ............................................. 480
If your vehicle becomes
stuck........................................................513
If your vehicle has to be
stopped in an emergency.......... 475
If your vehicle needs
to be towed ....................................... 476
If your vehicle overheats ................. 510
Emergency flashers ............................. 474
E

570Alphabetical index
ES350_OM_OM33C68U_(U)
Inside rear view mirror .........................126
Instrument panel light control .............77
Interior light............................................. 379
Intuitive parking assistFunction .................................................. 223
Jack Positioning a floor jack ................... 430
Vehicle-equipped jack ................... 492
Jack handle .................................................. 492
Jam protection function
Moon roof .............................................. 135
Power trunk opener and closer............................................ 103
Power windows ..................................... 131
Keyless entry Smart access system with push-button start .....................95
Wireless remote control ...................95
Keys
Battery-saving function ...................... 110
Electronic key ......................................... 92
Engine switch ........................................ 154
If the electronic key does not operate properly ....... 504
Key number plate ................................. 92
Keyless entry ...........................................95
Mechanical key ...................................... 92
Replacing the battery ....................... 457
Warning buzzer .................................. 109
Wireless remote control key ..........95
Knee airbags ............................................. 35 Language
(multi-information display)............ 539
LATCH anchors.......................................56
LDA (Lane Departure Alert with steering control).................................. 199
Lever Auxiliary catch lever ......................... 429
Hood lock release lever................. 429
Internal trunk release lever ............ 103
Shift lever .................................................159
Turn signal lever ...................................163
Wiper lever............................................. 173
Lexus Display Audio system ............270
Display settings ................................... 287
Setup menu .......................................... 282
Lexus Enform
*
Lexus Enform Remote*........................411
Lexus Enform Safety Connect ....... 406
Lexus Safety System+ ......................... 180
License plate lights Light switch.............................................165
Replacing light bulbs ....................... 470
Light bulbs
Replacing ............................................... 462
Wattage ................................................. 524
J
K
L

573Alphabetical index
ES350_OM_OM33C68U_(U)
Rear door sunshades ............................391
Rear sunshadeOperation ............................................... 391
Reverse operation feature.............392
Rear turn signal lights Replacing light bulbs ....................... 468
Turn signal lever .................................. 163
Wattage ..................................................524
Rear view mirror Inside rear view mirror ..................... 126
Outside rear view mirrors .............. 128
Rear window defoggers .................... 372
Refueling .................................................... 177 Capacity .................................................. 518
Fuel types ................................................ 518
Opening the fuel tank cap.............. 178
When the fuel filler door cannot be opened ...........................179
Remote Touch
*
Replacing Electronic key battery ......................457
Fuses........................................................ 459
Light bulbs ............................................. 462
Tires ........................................................... 491
Reporting safety defects for U.S. owners...................................550
Resetting the message indicating maintenance is required ..................421 Safety Connect ..................................... 406
Seat belts
Adjusting the seat belt........................ 30
Automatic Locking Retractor .......... 31
Child restraint system
installation .............................................58
Cleaning and maintaining
the seat belt .........................................418
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 ...........483
Seat belt extender .................................. 31
Seat belt pretensioners ........................ 31
SRS warning light .............................. 482
Seat heaters............................................ 378
Seat position memory ............................117
Seat ventilators...................................... 378
Seating capacity ...................................... 151
S
*: For vehicles with navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.