key battery lexus LC500 2018 Owner's Guide

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7-2. Steps to take in an emergency
steering lock system.
Contact any authorized Lexus retailer or
Lexus authorized repairer, or any reliable
repairer if the problem cannot be repaired,
or if repair procedures are unknown.
When the engine does not start, the
following steps can be used as an
interim measure to start the engine if
the engine switch is functioning nor-
mally. Do not use this starting proce-
dure except in cases of emergency.
1 Press the parking brake switch to
check that the parking brake is set.
( P.187)
Parking brake indicator will come on.
2Turn the engine switch to ACCES-
SORY mode.
3 Press and hold the engine switch
for about 15 seconds while
depressing the brake pedal firmly.
Even if the engine can be started using
the above steps, the system may be
malfunctioning. Have the vehicle
inspected by any authorized Lexus
retailer or Lexus authorized repairer,
or any reliable repairer.
One of the following may be the cause
of the problem:
 The electronic key may not be func-
tioning properly. ( P.390)
 There may not be sufficient fuel in
the vehicle’s tank.
Refuel the vehicle. ( P.201)
 There may be a malfunction in the
immobilizer system. ( P.70)
 There may be a malfunction in the
shift control system.* ( P.170)
 There may be a malfunction in the
steering lock system.
 The hybrid system may be malfunc-
tioning due to an electrical problem
such as electronic key battery
depletion or a blown fuse. However,
depending on the type of malfunc-
tion, an interim measure is available
to start the hybrid system.
*: It may not be possible to shift the shift
position from P.
Starting the engine in an emer-
gency
If the hybrid system will not
start (LC500h)
Reasons for the hybrid system not
starting vary depending on the situ-
ation. Check the following and per-
form the appropriate procedure:
The hybrid system will not start
even though the correct starting
procedure is being followed.
( P.167)

389
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7-2. Steps to take in an emergency
When trouble arises
■When the electronic key does not work properly
●Make sure that the smart entry & start system has not been deactivated using the Remote Touch or at any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer. If it is off, turn the function on.
●Check if battery-saving mode is set. If it is set, cancel the function. ( P.124)
Use the mechanical key (P.113) in
NOTICE
●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.124) or the electronic
key cannot be used because the
battery is depleted, the smart entry
& start system and wireless remote
control cannot be used. In such
cases, the doors and trunk can be
opened and the engine tem> can be started by following
the procedure below.
NOTICE
■In case of a smart entry & start system malfunction or other key-related
problems
Take your vehicle with all the electronic keys provided with your vehicle, to any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer as soon as possible.
Locking and unlocking the
doors, opening the trunk and
using the key li nked functions

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7-2. Steps to take in an emergency
When trouble arises
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
any authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.
■Stopping the engine
Set the parking brake, shift the shift position to P and press the engine switch as you normally do when stopping
the engine .
■Electronic key battery
As the above procedure is a temporary
measure, it is recommended that the elec- tronic key battery be replaced immediately when the battery is depleted. ( P.349)
■Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set, the alarm may be triggered.
■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.165, 170)

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7-2. Steps to take in an emergency
Use the mechanical key (P.113) in
order to perform the following opera-
tions:
■Locking and unlocking the doors
 P.389
■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
remove the cover in the center of
the rear seat.
3 Insert the mechanical key into the
cylinder and turn it clockwise to
open.
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 any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
Locking and unlocking the doors
and opening the trunk
AWARNING
■After unlocking the trunk
Make sure to put back the cover to the
center of the rear seat. Failure to do so may cause an accident.

393
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7-2. Steps to take in an emergency
When trouble arises
The glove box can be opened by per-
forming the following operations after
unlocking the doors.
If the glove box is locked, unlock it with the
mechanical key. ( P.293)
1Remove the cover using a flathead
screwdriver.
To prevent damage to the cover, cover the tip of the screwdriver with a rag.
2 Push the flathead screwdriver into
the part shown in the illustration to
open the glove box.
■After opening the glove box
The glove box can be opened normally by closing the glove box after restarting the
engine .
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 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.77)
NOTICE
■When installing the cover in the cen- ter of the rear seat
Make sure that the seat belts are not caught in the cover. Failure to do so may cause damage to the cover installation
clip and make it impossible to install the cover.
Opening the glove box
Restarting the engine system>

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7-2. Steps to take in an emergency
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 any autho-rized Lexus retailer or Lexus authorized
repairer.
●Some systems may require initialization.
( P.436)
■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 any autho- rized Lexus retailer or Lexus authorized repairer.
■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 entry &
start system when the 12-volt 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 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 what 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 rear wheels will be locked. ( P.363)
■When replacing the 12-volt battery
●Use a Central Degassing type 12-volt battery (European Regulations).
●LC500: 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.
LC500h: Use a 12-volt battery that the case size is same as the previous one (LN3), 20 hour rate capacity (20HR) is
equivalent (70Ah) or greater, and perfor- mance rating (CCA) is equivalent
(600A) or greater. • If the sizes differ, the 12-volt battery can-not be properly secured.
• If the 20 hour rate capacity is low, even if the time period where the vehicle is not used is a short time, the 12-volt battery
may discharge and engine may not be able to start.
●Use a 12-volt battery with a handle. If a 12-volt battery without a handle is used, removal is more difficult.
●After exchanging, firmly attach the fol-lowing items to the exhaust hole of the 12-
volt battery. • Use the exhaust hose that was attached to the 12-volt battery before exchanging.
• Use the exhaust hole plug included with the 12-volt battery exchanged or the one installed on the battery prior to the
exchange. (Depending on the 12-volt battery to be exchanged, the exhaust hole may be plugged.)

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What to do if... (Troubleshooting)
1-1.What to do if ... (Tro ubleshooting )What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by any authorized Lexus
retailer or Lexus authorized
repairer, or any reliable repairer.
( P.388)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer
immediately. ( P.388)
 Is the electronic key battery weak or
depleted? ( P.349)
 Is the engine switch
in IGNITION ON mode mode>?
When locking the doors, turn the engine
switch off. ( P.165, 170)
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.124)
 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.120)
 Did you press the engine switch
while firmly
depressing the brake pedal?
( P.163, 167)
 Is the shift position in P? (P.173,
179)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.123)
 Is the steering wheel unlocked?
( P.164, 168)
 Is the electronic key battery weak or
If you have a problem, check the
following before contacting any
authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.
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

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Alphabetical index
Brake hold ........................................................189
Break-in tips .................................................... 155
Brightness control
Instrument panel light control................... 91
BSM (Blind Spot Monitor) ...................... 248
Blind Spot Monitor function................. 254
Rear Crossing Traffic Alert function 256
C
Care....................................................... 304, 307
Aluminum wheels ..................................... 305
Exterior............................................................304
Interior .............................................................307
Seat belts ........................................................307
Cargo hooks ..................................................295
Center Display .............................................. 274
Chains ................................................................ 271
Child restraint system ...................................48
Fixed with a seat belt................................... 54
Fixed with an ISOFIX rigid anchor ..... 57
Points to remember..................................... 48
Riding with children ..................................... 47
Types of child restraint system installation
method ...........................................................50
Using an anchor bracket (for top strap)
............................................................................60
Child safety ........................................................ 47
12-volt battery precautions ...... 325, 399
Airbag precautions ......................................40
Child restraint system................................. 48
Heated steering wheel and seat heater
precautions............................................... 288
How your child should wear the seat belt
............................................................................ 32
Installing child restraints ..............................51
Power window lock switch.....................152
Power window precautions .................... 151
Removed electronic key battery precau-
tions .............................................................. 350
Seat belt precautions .................................. 47
Trunk precautions......................................... 119
Cleaning .............................................. 304, 307
Aluminum wheels ..................................... 305
Exterior........................................................... 304
Interior .............................................................307
Radar sensor ................................... 208, 253
Seat belts ........................................................307
Clock................................................................. 297
Coat hooks .................................................... 298
Condenser......................................................323
Console box ...................................................294
Console box light .........................................294
Consumption screen ................................... 104
Coolant
Capacity .......................................................... 416
Checking........................................................ 322
Preparing and checking before winter
..........................................................................269
Cooling system .............................................322
Engine overheating......................400, 403
Hybrid system overheating ................. 404
Cornering lights............................................. 193
Cruise control
Cruise control..............................................239
Dynamic radar cruise control with full-
speed range .............................................. 229
Cup holder......................................................294
Current fuel consumption ...........................94
Curtain shield airbags ...................................35
Customizable features ..............................423
D
Daytime running light system.....................191
Defogger
Outside rear view mirrors...................... 281
Rear window ................................................. 281
Windshield ..................................................... 281
Differential ....................................................... 418
Dimension ........................................................410

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Alphabetical index
Display
BSM (Blind Spot Monitor) ...................248
Consumption screen ................................ 104
Drive information .......................................... 94
Dynamic radar cruise control with full-
speed range .............................................. 229
Energy monitor ............................................ 104
Head-up display............................................ 99
Lexus parking assist ................................. 243
LKA (Lane-Keeping Assist) ................... 221
Multi-information display .......................... 92
Warning message.....................................378
Distance ..............................................................94
Do-it-yourself maintenance...................... 312
Door courtesy lights .................................... 291
Door lock
Door lock indicator...................................... 118
Doors .................................................................. 115
Smart entry & start system ...................... 122
Wireless remote control ........................... 113
Door pockets .................................................293
Doors .................................................................. 115
Automatic door locking and unlocking
system ............................................................. 118
Door glasses ................................................. 150
Door lock indicator...................................... 118
Door lock .......................................................... 115
Open door warning buzzer .......... 116, 118
Outside rear view mirrors....................... 147
Double locking system ................................. 75
Drive info 1/Drive info 2 ...............................94
Drive information ............................................94
Driver’s seat position memory................. 140
Driving position memory ........................ 140
Memory recall function ............................. 141
Drive-start control ........................................ 155
Driving ............................................................... 154
Break-in tips .................................................. 155
Correct driving posture ............................ 29
Driving mode select switch .................. 242
Hybrid vehicle driving tips .................... 267
Procedures..................................................... 154
Winter drive tips .........................................269
Driving mode select switch......................242
DRS (Dynamic Rear Steering) ...............262
Dynamic radar cruise control with full-
speed range ................................................229
Warning message ..................................... 237
Dynamic Rear Steering (DRS) ...............262
E
ECB (Electronically Controlled Brake Sys-
tem).................................................................262
Eco drive mode.............................................242
Eco Driving Indicator ................................... 86
Eco Driving Indicator Light........................ 86
Elapsed time ......................................................94
Electric motor (traction motor).................62
Electric Power Steering (EPS)
Function .......................................................... 262
Warning light ...............................................370
Electronically Controlled Brake System
(ECB) .............................................................262
Electronic key ...................................................112
Battery-saving function .............................124
If the electronic key does not operate
properly ...................................................... 389
Replacing the battery...............................349
Emergency, in case of
If a warning buzzer sounds.................. 368
If a warning light turns on...................... 368
If a warning message is displayed .....378
If the 12-volt battery is discharged ....392
If the electronic key does not operate
properly ...................................................... 389
If the engine will not start....................... 385
If the fuel filler door cannot be opened
......................................................................... 388
If the hybrid system will not start ....... 386
If you have a flat tire ................................. 384
If you lose your keys ................................ 388

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Alphabetical index
If the hybrid system will not start ....... 386
Overheating .................................................404
Power (ignition) switch .............................167
Regenerative braking ................................. 63
Starting the hybrid system.......................167
Hybrid System Indicator ............................103
Hybrid transmission ..................................... 179
M mode ........................................................... 184
Paddle shift switches .......................183, 184
Snow mode ................................................... 183
I
Identification
Engine................................................................. 411
Vehicle ............................................................. 410
Ignition switch (engine switch) ................ 163
Auto power off function .......................... 166
Changing the engine switch modes . 165
If your vehicle has to be stopped in an
emergency................................................ 360
Starting the engine ......................................163
Ignition switch (power switch) ................. 167
Auto power off function ...........................170
Changing the power switch modes ..170
If your vehicle has to be stopped in an
emergency................................................ 360
Starting the hybrid system.......................167
Immobilizer system ........................................70
Indicators ............................................................84
Initialization
Items to initialize .........................................436
Maintenance ........................................312, 321
Multi-information display .......................... 96
Power windows........................................... 150
Tire pressure warning system .............335
Inside rear view mirror................................ 146
Instrument panel light control ..................... 91
Interior lights ................................................... 291
Intrusion sensor and tilt sensor ..................78
ISOFIX rigid anchorss ..................................57
J
Jack
Positioning a floor jack ............................. 316
Vehicle-equipped jack........................... 339
Jack handle .................................................... 339
Jam protection function
Front seats ...................................................... 139
K
Keyless entry
Smart entry & start system ......................122
Wireless remote control ........................... 113
Keys ......................................................................112
Battery-saving function .............................124
Electronic key ................................................. 112
Engine switch ................................................ 163
If the electronic key does not operate
properly ...................................................... 389
If you lose your keys ................................ 388
Key number plate.......................................... 112
Keyless entry ......................................... 115, 122
Mechanical key .............................................. 112
Power switch................................................. 167
Replacing the battery...............................349
Warning buzzer ...........................................123
Wireless remote control ........................... 113
Knee airbags .....................................................35
L
Lane-Keeping Assist (LKA) ..................... 218
Operation ....................................................... 218
Warning messages................................... 224
Language (multi-information display) ....96
LDH (Lexus Dynamic Handling system)
..........................................................................263
Lever
Auxiliary catch lever .................................. 316
Hood lock release lever .......................... 316
Shift lever ............................................... 173, 179