
2996-3. Do-it-yourself maintenance
6
Maintenance and care
LC500hThe 12-volt battery is located in the
trunk.
■Before recharging
When recharging, the 12-volt battery pro-
duces hydrogen gas which is flammable
and explosive. Therefore, observe the fol-
lowing precautions before recharging:
●If recharging with the 12-volt battery
installed on the vehicle, be sure to discon-
nect the ground cable.
●Make sure the power switch on the char-
ger is off when connecting and discon-
necting the charger cables to the 12-volt
battery.
■After recharging/reconnecting the 12-
volt battery
●Unlocking the doors using the smart
access system with pu sh-button start may
not be possible immediately after recon-
necting the 12-volt battery. If this hap-
pens, use the wireless remote control or
the mechanical key to lock/unlock the
doors.
●Start the engine
engine switch
SORY mode. The engine
engine
mally from the second attempt.
●The engine switch
is recorded by the vehicle. If the 12-volt
WARNING
■When adding washer fluid
Do not add washer fluid when the engine
and may catch fire if spilled on the engine
etc.
NOTICE
■Do not use any fluid other than
washer fluid
Do not use soapy water or engine anti-
freeze instead of washer fluid.
Doing so may cause streaking on the
vehicle’s painted surfaces, as well as
damaging the pump leading to problems
of the washer fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as neces-
sary.
Refer to the freezing temperatures listed
on the label of the washer fluid bottle.
12-volt battery
Location

3186-3. Do-it-yourself maintenance
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access syst em with push-but-
ton start and wireless remote control will
not function properly.
●The operational rang e will be reduced.
■When the card key battery needs to be
replaced (if equipped)
The battery for th e card key is available only
at Lexus dealers. Your Lexus dealer can
replace the battery for you.
Prepare the following before replacing
the battery:
Flathead screwdriver
Small flathead screwdriver
Lithium battery CR2032
■Use a CR2032 lithium battery
●Batteries can be purchased at your Lexus
dealer, local electrical appliance shops or
camera stores.
●Replace only with the same or equivalent
type recommended by the manufacturer.
●Dispose of used batteries according to
the local laws.
1 Take out the mechanical key.
2 Remove the cover.
To prevent damage to the key, wrap the tip
of the screwdri ver with tape.
3Remove the depleted battery using
a small flathead screwdriver.
Insert a new battery with the “+” terminal
facing up.
Electronic key battery
Replace the battery with a new one
if it is depleted.
Items to prepare
Replacing the battery

3557-2. 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.115)
Use the mechanical key ( P.104) 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.115) 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
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
turning the engine switch
8 Once the vehicle’s engine
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
have the vehicle inspected at your Lexus
dealer as soon as possible.
■Starting the engine
when the 12-volt battery is discharged
The engine
started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio sys-
tem while the engine
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.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
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
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
If you are unsure wh at mode the engine
switch
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.330)
■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.

3968-2. Customization
■Smart access system with push-button start and wireless remote control
( P.104, 113)
■Smart access system with push-button start ( P.113)
Automatic door unlockShifting the shift
position to POff
OODriver’s door is opened
Locking/unlocking of the trunk
when both side doors are
locked/unlocked
OnOffO
Time elapsed before the door lock
indicator lights turn off30 seconds
1 minute
O10 minutes
20 minutes
FunctionDefault settingCustomized setting
Operating signal (Buzzers)5OffOO1 to 7
Operation signal (Emergency
flashers)OnOffOO
Time elapsed before automatic
door lock function is activated if
door is not open ed after being
unlocked
60 seconds
Off
OO30 seconds
120 seconds
Open door warning buzzerOnOffO
FunctionDefault settingCustomized setting
Smart access system with push-
button startOnOffO
Smart door unlockingDriver’s doorBoth side doorsOO
Number of consecutive door lock
operations2 timesAs many as desiredO
FunctionDefault settingCustomized settingABC
ABC
ABC

422Alphabetical index
Door lockDoors................................................................ 106
Smart access system with push-button start ................................................................... 113
Wireless remote control......................... 104
Door pockets ................................................ 260
Doors ................................................................. 106 Automatic door lock ing and unlocking
system ........................................................... 109
Door glasses .................................................. 132
Door lock........................................................ 106
Open door warning bu zzer .......107, 109
Outside rear view mirrors ...................... 129
Drive info 1/Drive info 2 .............................. 85
Drive information ........................................... 85
Driver’s seat position memory ................. 122 Driving position memory......................... 122
Memory recall function ............................ 123
Drive-start control ........................................ 137
Driving................................................................136 Break-in tips ................................................... 137
Correct driving posture .............................23
Driving mode select switch .................... 213
Hybrid vehicle driving tips .................... 236
Procedures .....................................................136
Winter drive tips......................................... 238
Driving mode select switch .......................213
DRS (Dynamic Rear Steering) .............. 232
Dynamic radar cruise control with full- speed range................................................ 203Warning message.........................................211
Dynamic Rear Steering (DRS) .............. 232
E
ECB (Electronically Controlled Brake Sys- tem) ..................................................................231
Eco drive mode ..............................................213
Eco Driving Indicator.................................... 78
Eco Driving Indicator Light ........................ 78
EDR (Event data recorder) ........................... 8
Elapsed time ..................................................... 85
Electric motor (tractio n motor) .................. 61 Electric Power Steering (EPS)
Function .......................................................... 232
Warning light ...............................................336
Electronically Controlled Brake System (ECB) ..............................................................231
Electronic key .................................................102 Battery-saving function.............................. 115
If the electronic key does not operate properly ...................................................... 355
Replacing the battery ................................ 318
Emergency, in case of If a warning buzzer sounds...................335
If a warning light turns on.......................335
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 the vehicle is trapped in rising water .......................................................................... 327
If you have a flat tire ................................. 350
If you lose your keys .................................354
If you think something is wrong..........333
If your vehicle becomes stuck .............370
If your vehicle has to be stopped in an emergency .................................................326
If your vehicle needs to be towed .....329
If your vehicle overheats ........... 364, 366
Emergency flashers .................................... 326
Energy monitor ............................................... 95
Engine ACCESSORY mode..................... 148, 152
Compartment.............................................. 292
Engine switch ................................................ 146
Fuel pump shut off system.....................334
Hood ............................................................... 290
How to start the engine ........................... 146
How to start the hybrid system............ 149
Identification number ............................... 372

Alphabetical index425
InitializationItems to initialize .........................................403
Maintenance ....................................283, 295
Power windows............................................ 132
Tire pressure warning system .............306
Inside rear view mirror ................................128
Instrument panel light control ................... 83
Interior lights.................................................. 258
Intuitive parking assist.................................. 214 Function ............................................................ 214
Warning message....................................... 216
J
JackPositioning a floor jack............................290
Vehicle-equipped jack ............................ 310
Jack handle ..................................................... 310
Jam protection function Front seats .........................................................121
Power windows............................................ 132
K
Keyless entrySmart access system with push-button start ................................................................... 113
Wireless remote control......................... 104
Keys.....................................................................102 Battery-saving function ............................. 115
Electronic key ................................................102
Engine switch.................................................146
If the electronic key does not operate properly.......................................................355
If you lose your keys................................. 354
Key number plate ........................................102
Keyless entry .........................................106, 113
Mechanical key.............................................102
Power switch .................................................149
Replacing the battery................................ 318
Warning buzzer .............................................114
Wireless remote control......................... 104
Knee airbags .................................................... 28
L
Lane-Keeping Assist (LKA)......................196 Operation ....................................................... 196
Warning messages...................................202
Language (multi-information display) ... 88
LATCH anchors ............................................. 50
LDH (Lexus Dynamic Handling system) .......................................................................... 232
Lever Auxiliary catch lever ................................ 290
Hood lock release lever ........................ 290
Internal trunk release lever....................... 112
Shift lever ................................................ 155, 161
Turn signal lever ...........................................167
Wiper lever .................................................... 178
Lexus climate concierge .......................... 246
Lexus Dynamic Handling system (LDH) .......................................................................... 232
Lexus Enform Safety Connect.................. 54
Lexus Safety System +................................ 184 Automatic High Beam ..............................176
Dynamic radar cruise control with full-
speed range ..............................................203
LKA (Lane-Keeping Assist) .................. 196
PCS (Pre-Collision System) ................. 189
License plate lights........................................ 173 Light switch .....................................................173
Replacing light bulbs ................................ 324
Light bulbs Replacing ....................................................... 324
Wattage ......................................................... 380
Lights Automatic High Beam system ..............176
Headlight switch...........................................173
Illuminated entry system ........................ 258
Interior lights list ......................................... 258
Interior lights ................................................ 258
Personal lights .............................................259
Replacing light bulbs ................................ 324
Trunk light ......................................................... 112
Turn signal lever ...........................................167

Alphabetical index427
Indicator .........................................................338
Operation....................................................... 168
Parking brake engaged warning buzzer...........................................................................170
Warning message.......................................170
Parking lights ................................................... 173 Light switch ..................................................... 173
Replacing light bulbs................................ 324
PCS (Pre-Collision System) .................... 189 Function ........................................................... 189
PCS OFF switch ........................................... 191
Warning light ............................................... 337
Warning message...................................... 195
Personal lights............................................... 258
Pop-up display ................................................. 82
Pop Up Hood................................................... 36
Power control unit.......................................... 64
Power control unit coolant ...................... 296 Capacity ......................................................... 376
Checking ....................................................... 296
Preparing and checking before winter......................................................................... 238
Power outlet .................................................. 264
Power steering (Elect ric power steering
system).......................................................... 232 Warning light ............................................... 336
Warning message..................................... 345
Power switch (engine switch) ........146, 149 Auto power off function ................ 149, 152
Changing the power switch (engine switch) modes................................. 148, 152
If your vehicle has to be stopped in an
emergency ................................................ 326
Starting the hybrid system (engine) 146, 149
Power windows ..............................................132 Door lock linked window operation..133
Jam protection function............................133
Operation........................................................ 132
Window lock switch ..................................133
Pre-Collision System (PCS) .................... 189 Function ........................................................... 189 PCS OFF switch ........................................... 191
Warning light ............................................... 337
Warning message ...................................... 195
R
Radar cruise control (dynamic radar cruise
control with full-speed range)............. 203
Radiator ........................................................... 297
Rear side marker lights ............................... 173 Light switch .....................................................173
Replacing light bulbs ................................ 324
Rear turn signal lights .................................. 167 Replacing light bulbs ................................ 324
Turn signal lever ...........................................167
Rear view mirror Inside rear view mirror ............................. 128
Outside rear view mirrors.......................129
Rear window defogger ............................. 249
Refueling ...........................................................182 Capacity ......................................................... 373
Fuel types ....................................................... 373
If the fuel filler do or cannot be opened
..........................................................................354
Opening the fuel tank cap ..................... 182
Regenerative braking ................................... 62
Remote Touch .............................................. 242
Replacing Electronic key battery ............................... 318
Fuses.................................................................. 319
Light bulbs ..................................................... 324
Tires ................................................................. 309
Resetting the message indicating mainte- nance is required ...................................... 283
Rev indicator ......................................................81
Rev peak............................................................. 82
Run-flat tires....................................... 303, 350
S
Seat belt reminder light............................. 339
Seat belts............................................................ 24 Automatic Locking Retractor................. 26