key battery Lexus GX460 2020 / LEXUS 2020 GX460 (OM60R27U) Owner's Guide

543
GX460_OM_OM60R27U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If the vehicle 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 Lexus by following the steps below.
Confirm that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depe nding on the situa-
tion, the alarm may activate and the
doors locked. ( P. 79)
Open the hood. ( P. 450)
Connecting the jumper cables accord ing to the following procedure:
Positive (+) battery terminal on your vehicle.
Positive (+) battery terminal on the second vehicle.
Negative (-) battery terminal on the second vehicle.
Connect the jumper cable to ground on your vehicle as shown in the illus-
tration.
The following procedures may be used to start the engine if the vehicle’s bat-
tery is discharged.
You can call your Lexus dealer , or qualified repair shop.
1
2
3
1
2
3
4

5447-2. Steps to take in an emergency
GX460_OM_OM60R27U_(U)
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximatel y 5 minutes to recharge the battery of
your vehicle.
Open and close any of the doors of your vehicle with the engine switch off.
Maintain the engine speed of the second vehicle and start the engine of your
vehicle by turning the engine switch to IGNITION ON mode.
Once your vehicle’s engine has started, remove the jumper cables in the exact
reverse order in which they were connected.
Once the engine starts, have the vehicle checked at your Lexus dealer as soon
as possible.
■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 off.
●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 disc harge gradually even when the vehicle is not
in use, due to natural discharge and the draini ng 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 un lock 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.
4
5
6
7

602What to do if... (Troubleshooting)
GX460_OM_OM60R27U_(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. 101)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 103)
●Is the electronic key battery weak or depleted? ( P. 484)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. (P. 197)
●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. 107)
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

603What to do if... (Troubleshooting)
GX460_OM_OM60R27U_(U)
●Did you press the engine switch while firmly depressing the brake pedal?
( P. 196)
●Is the shift lever in P? ( P. 196)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 122)
●Is the steering wheel unlocked? ( P. 199)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 541)
●Is the battery discharged? ( P. 543)
●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. 205)
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

607Alphabetical index
GX460_OM_OM60R27U_(U)
Bottle holders ......................................... 399
BrakeFluid.......................................................... 559
Parking brake...................................... 208
Warning light .......................................... 511
Brake assist .............................................. 351
Break-in tips..............................................166
Brake Override System.......................165
Brightness control Instrument panel light control .....................................................89
BSM (Blind Spot Monitor)................ 357 The Blind Spot Monitor function ................................................. 361
The Rear Cross Traffic Alert function ................................................364
Care ................................................ 434, 437 Aluminum wheels ..............................434
Exterior....................................................434
Interior ..................................................... 437
Seat belts ............................................... 438
Cargo hooks .......................................... 402
Cargo net hooks ................................... 403
Center differential................................ 340
CD player
*
Chains ....................................................... 368
Child restraint system............................ 54 Booster seats, definition ....................55
Booster seats, installation..................65
Convertible seats, definition ............55
Convertible seats, installation ......... 62 Installing child restraint system
with LATCH system........................ 60
Installing child restraint system with seat belts...................................... 62
Installing child restraint system with top tether strap......................... 66
Infant seats, definition.......................... 55
Infant seats, installation....................... 62
Child safety ................................................ 53 Airbag precautions.............................. 39
Back door precautions.......................113
Battery precautions ............... 461, 545
Child restraint system......................... 54
Glass hatch precaution ..................... 118
How your child should wear the seat belt ...........................................32
Installing child restraints .................... 58
Moon roof precautions .................... 162
Power window lock switch.............156
Power window precautions .......... 158
Rear door child-p rotectors ............107
Removed key battery precautions .......................................485
Seat belt precautions .......................... 33
Seat heater precautions .................389
Child-protectors .................................... 107
Cleaning Aluminum wheels .............................. 434
Exterior ................................................... 434
Interior ..................................................... 437
Seat belts................................................438
Clock........................................................... 412
Coat hooks ............................................. 420
Compass ................................................... 421
Condenser...............................................457
C
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.

608Alphabetical index
GX460_OM_OM60R27U_(U)
Console box ........................................... 396
Cool box .................................................. 409
Cooling system ..................................... 455Engine overheating.......................... 546
Conversation mirror ............................. 412
Crawl Control ....................................... 344
Cruise control Dynamic radar cruise control......254
Cup holders ............................................ 398
Curtain shield airbags ........................... 36
Current fuel consumption ................... 93
Customizable features ....................... 576
DAC (Downhill Assist Control system)................................................... 348
Daytime running light system ........... 210
Defogger Front windshield ................................ 380
Outside rear view mirrors .............. 381
Rear window ......................................... 381
Differential ............................................... 557
Dimension ............................................... 552
Display Drive information .................................. 93
Multi-information display ....................91
Warning message ............................ 520
Do-it-yourself maintenance ............. 447
Doors.......................................................... 104 Back door ................................................... 111
Door glasses ......................................... 156
Door lock ................................................ 104
Open door warning light................ 513
Outside rear view mirrors .............. 153
Rear door child-protector.............. 107
Drive information .................................... 93
Drive-Start Control ...............................166 Driver’s seat position memory............141
Driving ........................................................ 164
AVS switch ........................................... 339
Break-in tips ...........................................166
Correct posture .................................... 28
Procedures .............................................164
Winter drive tips ................................ 367
Dynamic radar cruise control ..........254
Eco Driving Indicator .............................96
EDR (Event data recorder)................... 10
Electronic key ......................................... 100 Battery-saving function .................... 123
If the electronic key does not operate properly ............................540
Replacing the battery ...................... 484
Emergency, in case of If the electronic key does not operate properly ............................540
If the engine will not start ...............538
If the vehicle has discharged battery ........................ 543
If the vehicle is trapped in rising water.....................................................502
If the warning buzzer sounds ......... 511
If the warning light turns on ............. 511
If you have a flat tire .......................... 524
If you lose your keys................. 101, 103
If you think something is wrong.................................................. 509
If your vehicle becomes stuck...................................................... 549
If your vehicle needs to be towed ...................................................503
If your vehicle overheats ................ 546
D
E

611Alphabetical index
GX460_OM_OM60R27U_(U)
Keyless entrySmart access system with push-button start ............................... 121
Wireless remote control .................100
Keys............................................................. 100 Battery-saving function .....................123
Electronic key .......................................100
If the electronic key does not operate properly............................ 540
If you lose your keys ................. 101, 103
Key number plate ...............................100
Keyless entry ..........................104, 111, 121
Mechanical key ...................................... 101
Replacing the battery ...................... 484
Wireless remote control .................100
KDSS ......................................................... 352 Warning light ........................................ 512
Lane Departure Alert (LDA) .......... 246
Lever Auxiliary catch lever ........................ 450
Hood lock release lever ................ 450
Shift lever ................................................202
Turn signal lever .................................207
Wiper lever ............................................ 218
Lexus Enform Safety Connect............. 71
Lexus Safety System +........................ 229 Automatic High Beam ...................... 212
Dynamic radar cruise control......254
LDA (Lane Departure Alert) .......246
PCS (Pre-Collision System) ........235 License plate lights .............................. 209
Light switch........................................... 209
Replacing light bulbs ....................... 497
Light Engine switch light ............................ 392
Fog light switch ..................................... 217
Headlight switch ................................ 209
Illuminated entry system................. 394
Interior light........................................... 393
Interior light list .................................... 392
Personal light ....................................... 393
Replacing light bulbs .........................491
Turn signal lever ................................. 207
Vanity lights ..............................................411
Wattage ...................................................561
Welcome lighting..................................211
Light bulbs Replacing .................................................491
Wattage ...................................................561
Lock steering column...........................198
Luggage cover ...................................... 404
K
L
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.

613Alphabetical index
GX460_OM_OM60R27U_(U)
Personal lights........................................ 392Switch.......................................................393
Wattage ................................................... 561
Power outlet .............................................413
Power windows .......................................156 Jam protection function ................... 157
Operation ............................................... 156
Window lock switch.......................... 156
Pre-Collision System (PCS) ............ 235 Enabling/disabling the system ... 238
Function ..................................................235
Warning light ........................................ 512
Radiator .................................................... 457
Radio
*
Rear seat ................................................... 130 Adjustment ............................................. 130
Rear turn signal lights ......................... 207 Replacing light bulbs ........................494
Turn signal lever .................................207
Wattage ................................................... 561
Rear view mirror Inside rear view mirror ....................... 151
Outside rear view mirrors .............. 153
Rear view monitor system .................274
Rear window defogger ....................... 381
Rear window wiper.............................. 222
Refueling .................................................. 225 Capacity ................................................ 554
Fuel types .............................................. 554
Opening the fuel tank cap............. 227 Replacing
Electronic key battery ..................... 484
Fuses ........................................................486
Light bulbs...............................................491
Tires .......................................................... 524
Wireless remote control battery .................................................. 484
Reporting safety defects for U.S. owners .................................. 588
Reset the maintenance data .............. 441
Safety connect............................................ 71
Seat belts .................................................... 30 Adjusting the seat belt.......................... 31
Automatic Locking Retractor .........32
Child restraint system installation ............................................. 58
Cleaning and maintaining the seat belt .......................................438
Emergency Locking Retractor.......32
How to wear your seat belt............. 28
How your child should wear the seat belt ...........................................32
Pregnant women, proper seat belt use......................... 33
Reminder light and buzzer .............513
Seat belt pretensioners........................ 31
Seat belt extender .................................32
SRS warning light ................................. 511
R
S
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.