2018 Lexus LC500h key battery

3597-2. Steps to take in an emergency
LC500_LC500h_OM_OM11405U_(U)
7
When trouble arises
cables and a second vehicle with a 12-
volt battery, you can jump start your
vehicle using the following procedure.
1 Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
( P.65)
2 Open the hood ( P.289) and
open the fuse box cover.
Push the tab in and lift the lid off.
LC500
LC500h 3
Open the exclusive jump starting
terminal cover.
LC500
LC500h

3617-2. Steps to take in an emergency
LC500_LC500h_OM_OM11405U_(U)
7
When trouble arises
5 Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the 12-volt battery of your
vehicle.
6 Open and close any of the door of
your vehicle with the engine switch
off.
7 Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by
turning the engine switch switch> to IGNITION ON mode
.
8 Once the vehicle’s engine system> has started, remove the
jumper cables in the exact reverse
order from which they were con-
nected.
9 Close the exclusive jump starting
terminal cover, and reinstall the fuse
box cover to tits original position.
Once the engine starts,
have the vehicle inspected at your Lexus
dealer as soon as possible.
■Starting the engine
when the 12-volt battery is discharged
The engine cannot be
started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio sys-
tem while the engine is
stopped.
●Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■When the 12-volt batte ry is removed or
discharged
●Information stored in the ECU is cleared.
When the 12-volt battery is depleted,
have the vehicle inspected at your Lexus
dealer.
●Some systems may requ ire initialization.
(  P.403)
■When removing the 12-volt battery ter-
minals
When the 12-volt battery terminals are
removed, the information stored in the
ECU is cleared. Before removing the 12-
volt battery terminals, contact your Lexus
dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery
will discharge gradually even when the
vehicle is not in use, due to natural dis-
charge and the draining effects of certain
electrical appliances. If the vehicle is left for
a long time, the 12-volt battery may dis-
charge, and the engine
may be unable to start. (The 12-volt battery
recharges automatically during driving.)
■When recharging or replacing the 12-
volt battery
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
12-volt battery is discharged. Use the
wireless remote control or the mechani-
cal key to lock or unlock the doors.
●The engine may not start
on the first attempt after the 12-volt bat-
tery 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
12-volt battery is reconnected, the system
will return to the mode it was in before
the 12-volt battery was discharged.
Before disconnecting the 12-volt battery,
turn the engine switch off.
If you are unsure wh at mode the engine
switch was in before the
12-volt battery discharged, be especially
careful when reconnecting the 12-volt
battery.

418What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)
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.354)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.354)
 Is the electronic key battery weak or
depleted? ( P.318)
 Is the engine switch
in IGNITION ON mode mode>?
When locking the doors, turn the engine
switch off. ( P.142, 146)
 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)
 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.105)
 Did you press the engine switch
while firmly
depressing the brake pedal?
( P.140, 143)
 Is the shift position in P? ( P.149,
155)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.107)
 Is the steering wheel unlocked?
( P.141, 144)
 Is the electronic key battery weak or
depleted?
In this case, the engine can
be started in a temporary way. ( P.356)
 Is the 12-volt battery discharged?
( P.357)
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 trunk lid is closed with the
electronic key left inside
If you think something is wrong
The engine does
not start
The steering wheel cannot be
turned after the engine system> is stopped

421What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)Alphabetical index421
C
Care ........................................................274, 277 Aluminum wheels ...................................... 275
Exterior ........................................................... 274
Interior ..............................................................277
Seat belts.........................................................277
Cargo capacity.............................................. 138
Cargo hooks ................................................. 256
Center Display ............................................. 236
Chains .............................................................. 234
Child restraint system................................... 43 Fixed with a LATCH system ..................50
Fixed with a seat belt....................................47
Front passenger occupant classification system ............................................................. 38
Points to remember .................................... 43
Riding with children ..................................... 43
Types of child restraint system installation method ........................................................... 44
Using an anchor bracket .......................... 52
Child safety ....................................................... 43 12-volt battery precautions .......299, 363
Airbag precautions...................................... 33
Child restraint system................................. 44
Heated steering wheel and seat heater precautions................................................ 249
How your child should wear the seat belt ............................................................................ 25
Power window lock switch..................... 126
Power window precautions ................... 126
Removed electronic key battery precau- tions ................................................................ 318
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 43
Trunk precautions ...................................... 103
Cleaning................................................274, 277 Aluminum wheels ...................................... 275
Exterior ........................................................... 274
Interior ..............................................................277
Radar sensor........................................182, 217
Seat belts.........................................................277 Clock ................................................................ 258
Coat hooks..................................................... 259
Condenser ..................................................... 296
Console box .................................................. 255
Console box light ........................................ 255
Cooling system............................................. 295
Engine overheating...................... 364, 366
Hybrid system overheating .................. 367
Cornering lights .............................................169
Cruise control Dynamic radar cruise control with full-
speed range ............................................... 198
Cup holder ..................................................... 255
Current fuel consumption ...........................79
Curtain shield airbags .................................. 28
Customizable features ................................391
D
Daytime running light system ................... 167
Defogger Outside rear view mirrors..................... 243
Rear window ................................................ 243
Windshield .................................................... 243
Differential ...................................................... 378
Dimension ...................................................... 372
Dinghy towing.................................................139
Display BSM (Blind Spot Monitor)..................... 215
Drive information .......................................... 79
Dynamic radar cruise control with full-
speed range ............................................... 198
Energy monitor ..............................................89
Head-up display............................................84
Intuitive parking assist ............................. 209
LKA (Lane-Keeping Assist) .................. 194
Multi-information display .......................... 78
Warning message ..................................... 344
Distance ..............................................................79
Do-it-yourself maintenance .................... 283
Door courtesy lights ................................... 252
Door lock Doors .................................................................. 99

422Alphabetical index
LC500_LC500h_OM_OM11405U_(U)
Smart access system with push-button start ................................................................. 106
Wireless remote control........................... 97
Door pockets ................................................ 254
Doors ................................................................... 99 Automatic door lock ing and unlocking
system ............................................................102
Door glasses ..................................................125
Door lock.......................................................... 99
Open door warning bu zzer .......100, 102
Outside rear view mirrors ...................... 123
Drive info 1/Drive info 2 ...............................79
Drive information ............................................79
Driver’s seat position memory .................. 116 Driving position memory.......................... 116
Memory recall function ..............................117
Drive-start control ......................................... 131
Driving............................................................... 130 Break-in tips .................................................... 131
Correct driving posture .............................23
Driving mode select switch ..................208
Hybrid vehicle driving tips ...................... 231
Procedures .................................................... 130
Winter drive tips......................................... 233
Driving mode select switch .....................208
DRS (Dynamic Rear Steering) ...............227
Dynamic radar cruise control with full- speed range................................................. 198Warning message.....................................206
Dynamic Rear Steering (DRS) ...............227
E
ECB (Electronically Controlled Brake Sys- tem) ................................................................ 226
Eco drive mode ............................................208
Eco Driving Indicator.....................................72
Eco Driving Indicator Light .........................72
EDR (Event data recorder) ............................7
Elapsed time ......................................................79
Electric motor (tractio n motor) ................ 54
Electric Power Steering (EPS) Function ...........................................................227 Warning light ...............................................335
Electronically Controlled Brake System (ECB) ............................................................ 226
Electronic key .................................................. 96 Battery-saving function............................108
If the electronic key does not operate properly ...................................................... 355
Replacing the battery ................................ 318
Emergency, in case of If a warning buzzer sounds...................334
If a warning light turns on.......................334
If a warning message is displayed ..... 344
If the 12-volt battery is discharged ....357
If the electronic key does not operate properly ...................................................... 355
If the engine will not start......................... 351
If the fuel filler do or cannot be opened
..........................................................................354
If the hybrid system will not start ........352
If you have a flat tire ................................. 350
If you lose your keys .................................354
If you think something is wrong.......... 332
If your vehicle becomes stuck .............370
If your vehicle has to be stopped in an emergency .................................................326
If your vehicle needs to be towed .....328
If your vehicle overheats ........... 364, 366
Emergency flashers .................................... 326
Energy monitor ............................................... 89
Engine ACCESSORY mode..................... 142, 146
Compartment................................................291
Engine switch ................................................ 140
Fuel pump shut off system.....................333
Hood ............................................................... 289
How to start the engine ........................... 140
How to start the hybrid system.............143
Identification number ............................... 372
If the engine will not start......................... 351
If the hybrid system will not start ........352
If your vehicle has to be stopped in an emergency .................................................326

425What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)Alphabetical index425
Power windows............................................125
Tire pressure warning system .............306
Inside rear view mirror ................................ 122
Instrument panel light control .................... 77
Interior lights.................................................. 252
Intuitive parking assist................................ 209 Function ..........................................................209
Warning message.........................................211
J
JackPositioning a floor jack............................289
Vehicle-equipped jack ...........................309
Jack handle .................................................... 309
Jam protection function Front seats ........................................................ 115
Power windows............................................125
K
Keyless entrySmart access system with push-button start ................................................................. 106
Wireless remote control........................... 97
Keys...................................................................... 96 Battery-saving function ........................... 108
Electronic key ................................................. 96
Engine switch................................................ 140
If the electronic key does not operate properly.......................................................355
If you lose your keys................................. 354
Key number plate ......................................... 96
Keyless entry ........................................ 99, 106
Mechanical key.............................................. 96
Power switch ................................................. 143
Replacing the battery................................ 318
Warning buzzer ...........................................107
Wireless remote control........................... 97
Knee airbags .................................................... 28
L
Lane-Keeping Assist (LKA)....................... 191 Operation ......................................................... 191
Warning messages.................................... 196
Language (multi-information display) ... 82
LATCH anchors ............................................. 50
LDH (Lexus Dynamic Handling system) ...........................................................................227
Lever Auxiliary catch lever ................................ 289
Hood lock release lever ........................ 289
Internal trunk release lever..................... 105
Shift lever ...............................................149, 155
Turn signal lever ............................................ 161
Wiper lever ..................................................... 172
Lexus climate concierge .......................... 240
Lexus Dynamic Handling system (LDH) ...........................................................................227
Lexus Enform Safety Connect............... 266
Lexus Safety System+..................................178 Automatic High Beam ............................. 170
Dynamic radar cruise control with full-
speed range ............................................... 198
LKA (Lane-Keeping Assist) .................... 191
PCS (Pre-Collision System) ................. 184
License plate lights........................................ 167 Light switch .....................................................167
Replacing light bulbs ................................ 324
Light bulbs Replacing ....................................................... 324
Wattage ......................................................... 380
Lights Automatic High Beam system ............. 170
Headlight switch...........................................167
Illuminated entry system ......................... 252
Interior lights list .......................................... 252
Interior lights ................................................. 252
Personal lights .............................................253
Replacing light bulbs ................................ 324
Trunk light ....................................................... 105
Turn signal lever ............................................ 161

427What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)Alphabetical index427
Indicator .........................................................338
Operation........................................................ 162
Parking brake engaged warning buzzer ...........................................................................164
Warning message.......................................164
Parking lights ................................................... 167 Light switch ..................................................... 167
Replacing light bulbs................................ 324
PCS (Pre-Collision System) .................... 184 Function ........................................................... 184
PCS OFF switch ......................................... 186
Warning light ............................................... 336
Warning message...................................... 190
Personal lights............................................... 252
Pop-up display ..................................................76
Pop Up Hood................................................... 36
Power control unit...........................................57
Power control unit coolant ...................... 295 Capacity ......................................................... 376
Checking ....................................................... 295
Preparing and checking before winter......................................................................... 233
Power outlet .................................................. 258
Power steering (Elect ric power steering
system)...........................................................227 Warning light ...............................................335
Warning message..................................... 345
Power switch (engine switch) ....... 140, 143 Auto power off function ................ 143, 146
Changing the power switch (engine switch) modes..................................142, 146
If your vehicle has to be stopped in an
emergency ................................................ 326
Starting the hybrid system (engine) 140, 143
Power windows ..............................................125 Door lock linked window operation.. 126
Jam protection function............................ 126
Operation........................................................125
Window lock switch .................................. 126
Pre-Collision System (PCS) .................... 184 Function ........................................................... 184 PCS OFF switch ......................................... 186
Warning light ...............................................336
Warning message ...................................... 190
R
Radar cruise control (dynamic radar cruise
control with full-speed range).............. 198
Radiator ........................................................... 296
Rear side marker lights ............................... 167 Light switch .....................................................167
Replacing light bulbs ................................ 324
Rear turn signal lights ................................... 161 Replacing light bulbs ................................ 324
Turn signal lever ............................................ 161
Rear view mirror Inside rear view mirror .............................. 122
Outside rear view mirrors.......................123
Rear window defogger ............................. 243
Refueling ........................................................... 176 Capacity ......................................................... 373
Fuel types ....................................................... 373
If the fuel filler do or cannot be opened
..........................................................................354
Opening the fuel tank cap ......................176
Regenerative braking ................................... 55
Remote Touch .............................................. 236
Replacing Electronic key battery ............................... 318
Fuses.................................................................. 319
Light bulbs ..................................................... 324
Tires ................................................................. 309
Resetting the message indicating mainte- nance is required ...................................... 282
Rev indicator .................................................... 75
Rev peak..............................................................76
Run-flat tires....................................... 303, 350
S
Seat belt reminder light............................. 339
Seat belts............................................................ 24 Automatic Locking Retractor................. 26