2020 Lexus LC500h key battery

3597-2. Steps to take in an emergency
7
When trouble arises
the filler opening due to air being dis-
charged from inside the fuel tank.
Therefore, fill the fuel tank carefully and
slowly.
■When the electronic key does not work
properly
●Make sure that the smart access system
with push-button start has not been deac-
tivated using the Remote Touch or at your
Lexus dealer. If it is off, turn the function
on.
●Check if battery-saving mode is set. If it is
set, cancel the function. ( P.117)
Use the mechanical key ( P.106) in
order to perform th e following opera-
tions:
WARNING
■After opening the fuel filler door
Make sure to put back the cover to the
center of the rear seat. Failure to do so
may cause an accident.
NOTICE
■After opening the fuel filler door
●Secure the tab in its original position.
●Install the tab so that it does not cover
the clip installation position . Fail-
ure to do so may cause damage to the
clip and make it impossible to install
the cover.
A
If the electronic key does not
operate properly
If communication between the
electronic key and vehicle is inter-
rupted ( P.117) or the electronic
key cannot be used because the
battery is depleted, the smart
access system with push-button
start and wireless remote control
cannot be used. In such cases, the
doors and trunk can be opened and
the engine can be
started by following the procedure
below.
NOTICE
■In case of a smart access system with
push-button start malfunction or
other key-rela ted problems
Take your vehicle with all the electronic
keys (including the card key) provided
with your vehicle to your Lexus dealer as
soon as possible.
Locking and unlocking the
doors, opening the trunk and
using the key linked functions

3617-2. Steps to take in an emergency
7
When trouble arises
will turn to ACCESSORY mode.
3Firmly depress the brake pedal and
check that is shown on the
multi-information display.
4 Press the engine switch switch>.
In the event that the engine tem> still cannot be started, contact
your Lexus dealer.
■Stopping the engine
Set the parking brake, shift the shift position
to P and press the engine switch switch> as you normally do when stopping
the engine .
■Electronic key battery
As the above procedure is a temporary
measure, it is recomme nded that the elec-
tronic key battery be replaced immediately
when the battery is depleted. ( P.322)
■Changing engine switch
modes
Release the brake pedal and press the
engine switch in step 3
above.
The engine does not start
and modes will be changed each time the
switch is pressed. ( P.150, 154)
Use the mechanical key ( P.106) in
order to perform th e following opera-
tions:
■Locking and unlocking the doors
 P.359
■Opening the trunk
1 Slide the rear passengers’ seat
belts towards the outside.
2 Insert your fingers at the positions
marked and pull towards you to
If the 12-volt battery is dis-
charged
The following procedures may be
used to start the engine tem> or opening the doors, trunk or
glove box if the 12-volt battery is
discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Locking and unlocking the doors
and opening the trunk
A

3637-2. Steps to take in an emergency
7
When trouble arises
cables and a second vehicle with a 12-
volt battery, you can jump start your
vehicle using the following procedure.
1Confirm that the electronic key
(including the card key) is being
carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
( P.71)
2 Open the hood ( P.294) 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
4 Connect a positive jumper cable clamp to on your vehicle and connect the
clamp on the other end of the positive cable to on the second vehicle.
Then, connect a negative cable clamp to on the second vehicle and con-
nect the clamp at the other end of the negative cable to .
A
B
C
D

3657-2. Steps to take in an emergency
7
When trouble arises
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 its 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 battery 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 require initialization.
(  P.407)
■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.
●If the 12-volt battery discharges, it may
not be possible to shift the shift position to
other positions. In this case, the vehicle
cannot be towed without lifting both rear
wheels because the re ar wheels will be
locked. ( P.334)
■When replacing the 12-volt battery
●Use a Central Degassing type 12-volt
battery (European Regulations).
●Type A*1: Use a 12-volt battery that the
case size is same as the previous one
(LN4), 20 hour rate capacity (20HR) is
equivalent (80Ah) or greater, and per-
formance rating (CCA) is equivalent
(685A) or greater.

422What to do if... (Troubleshooting)
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.358)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.358)
 Is the electronic key battery weak or
depleted? ( P.322)
 Is the engine switch
in IGNITION ON mode mode>?
When locking the doors, turn the engine
switch off. ( P.150, 154)
 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.117)
 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.114)
 Did you press the engine switch
while firmly
depressing the brake pedal?
( P.148, 151)
 Is the shift position in P? ( P.157,
163)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.116)
 Is the steering wheel unlocked?
( P.149, 152)
 Is the electronic key battery weak or
depleted?
In this case, the engine can
be started in a temporary way. ( P.360)
 Is the 12-volt battery discharged?
( P.361)
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

Alphabetical index425
Rear Cross Traffic Alert function....... 229
C
Care ........................................................ 278, 281Aluminum wheels ...................................... 279
Exterior ........................................................... 278
Interior ...............................................................281
Seat belts..........................................................281
Cargo capacity...............................................146
Cargo hooks ................................................. 266
Center Display ............................................. 246
Chains .............................................................. 243
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 .......304, 367
Airbag precautions...................................... 33
Child restraint system................................. 44
Heated steering wheel and seat heater precautions................................................ 259
How your child should wear the seat belt ............................................................................ 25
Power window lock switch.....................135
Power window precautions ...................135
Removed electronic key battery precau- tions ............................................................... 323
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 43
Trunk precautions .........................................112
Cleaning................................................ 278, 281 Aluminum wheels ...................................... 279
Exterior ........................................................... 278
Interior ...............................................................281
Radar sensor..................................... 189, 225 Seat belts ......................................................... 281
Clock ................................................................ 268
Coat hooks..................................................... 269
Condenser ...................................................... 301
Console box .................................................. 265
Console box light ........................................ 265
Cooling system.............................................300 Engine overheating...................... 368, 370
Hybrid system overheating ....................371
Cornering lights ............................................. 177
Cruise control Dynamic radar cruise control with full-
speed range ............................................. 206
Cup holder ..................................................... 265
Current fuel consumption .......................... 86
Curtain shield airbags .................................. 28
Customizable features .............................. 395
D
Daytime running light system ................... 175
Defogger Outside rear view mirrors.....................253
Rear window ................................................253
Windshield ....................................................253
Differential ...................................................... 382
Dimension ...................................................... 376
Dinghy towing................................................. 147
Display BSM (Blind Spot Monitor).................... 223
Drive information ..........................................86
Dynamic radar cruise control with full-
speed range ............................................. 206
Energy monitor .............................................. 96
Head-up display..............................................91
Intuitive parking assist ................................ 217
LKA (Lane-Keeping Assist) .................202
Multi-information display ..........................84
Warning message .................................... 348
Distance ............................................................. 86
Do-it-yourself maintenance ....................288
Door courtesy lights ................................... 262
Door lock

426Alphabetical index
Doors................................................................ 108
Smart access system with push-button start ................................................................... 115
Wireless remote control......................... 106
Door pockets ................................................ 264
Doors ................................................................. 108 Automatic door lock ing and unlocking
system ............................................................... 111
Door glasses ..................................................134
Door lock........................................................ 108
Open door warning bu zzer .......... 109, 111
Outside rear view mirrors ....................... 131
Drive info 1/Drive info 2 .............................. 86
Drive information ........................................... 86
Driver’s seat position memory ................. 124 Driving position memory......................... 124
Memory recall function ............................125
Drive-start control ........................................139
Driving............................................................... 138 Break-in tips ...................................................139
Correct driving posture .............................23
Driving mode select switch .................... 216
Hybrid vehicle driving tips .................... 240
Procedures .................................................... 138
Winter drive tips......................................... 242
Driving mode select switch ....................... 216
DRS (Dynamic Rear Steering) .............. 235
Dynamic radar cruise control with full- speed range................................................ 206Warning message....................................... 214
Dynamic Rear Steering (DRS) .............. 235
E
ECB (Electronically Controlled Brake Sys- tem) ................................................................ 235
Eco drive mode .............................................. 216
Eco Driving Indicator.................................... 78
Eco Driving Indicator Light ........................ 78
EDR (Event data recorder) ........................... 8
Elapsed time ..................................................... 86
Electric motor (tractio n motor) ................ 60
Electric Power Steering (EPS) Function ..........................................................235
Warning light .............................................. 340
Electronically Controlled Brake System (ECB) ............................................................ 235
Electronic key ................................................ 104 Battery-saving function.............................. 117
If the electronic key does not operate properly ...................................................... 359
Replacing the battery ............................... 322
Emergency, in case of If a warning buzzer sounds...................339
If a warning light turns on.......................339
If a warning message is displayed .... 348
If the 12-volt battery is discharged ..... 361
If the electronic key does not operate properly ...................................................... 359
If the engine will not start....................... 355
If the fuel filler do or cannot be opened
......................................................................... 358
If the hybrid system will not start ....... 356
If the vehicle is trapped in rising water ........................................................................... 331
If you have a flat tire ..................................354
If you lose your keys ................................ 358
If you think something is wrong.......... 337
If your vehicle becomes stuck ............. 374
If your vehicle has to be stopped in an emergency ................................................ 330
If your vehicle needs to be towed .....333
If your vehicle overheats ........... 368, 370
Emergency flashers .................................... 330
Energy monitor ............................................... 96
Engine ACCESSORY mode.................... 150, 154
Compartment..............................................296
Engine switch ................................................ 148
Fuel pump shut off system.................... 338
Hood ................................................................ 294
How to start the engine ........................... 148
How to start the hybrid system.............. 151
Identification number ............................... 376
If the engine will not start....................... 355

Alphabetical index429
InitializationItems to initialize ......................................... 407
Maintenance .................................... 287, 299
Power windows............................................ 134
Tire pressure warning system .............. 310
Inside rear view mirror ............................... 130
Instrument panel light control ................... 83
Interior lights.................................................. 262
Intuitive parking assist.................................. 217 Function ............................................................ 217
Warning message....................................... 219
J
JackPositioning a floor jack............................ 294
Vehicle-equipped jack .............................314
Jack handle ......................................................314
Jam protection function Front seats ....................................................... 123
Power windows............................................ 134
K
Keyless entrySmart access system with push-button start ................................................................... 115
Wireless remote control......................... 106
Keys.................................................................... 104 Battery-saving function ..............................117
Electronic key ............................................... 104
Engine switch................................................ 148
If the electronic key does not operate properly.......................................................359
If you lose your keys................................ 358
Key number plate ....................................... 104
Keyless entry ........................................ 108, 115
Mechanical key............................................ 104
Power switch .................................................. 151
Replacing the battery............................... 322
Warning buzzer ............................................ 116
Wireless remote control......................... 106
Knee airbags .................................................... 28
L
Lane-Keeping Assist (LKA)......................199 Operation ....................................................... 199
Warning messages.................................. 205
Language (multi-information display) ... 88
LATCH anchors ............................................. 50
LDH (Lexus Dynamic Handling system) .......................................................................... 236
Lever Auxiliary catch lever ................................. 294
Hood lock release lever ......................... 294
Internal trunk release lever....................... 114
Shift lever ............................................... 157, 163
Turn signal lever .......................................... 169
Wiper lever .................................................... 180
Lexus climate concierge .......................... 250
Lexus Dynamic Handling system (LDH) .......................................................................... 236
Lexus Enform Safety Connect.................. 54
Lexus Safety System +.................................187 Automatic High Beam ............................. 178
Dynamic radar cruise control with full-
speed range ............................................. 206
LKA (Lane-Keeping Assist) .................. 199
PCS (Pre-Collision System) ..................192
License plate lights........................................ 175 Light switch .....................................................175
Replacing light bulbs ................................328
Light bulbs Replacing .......................................................328
Wattage ......................................................... 384
Lights Automatic High Beam system ............. 178
Headlight switch...........................................175
Illuminated entry system ......................... 262
Interior lights list .......................................... 262
Interior lights ................................................. 262
Personal lights .............................................263
Replacing light bulbs ................................328
Trunk light ......................................................... 114
Turn signal lever .......................................... 169