key battery LEXUS LS600H 2017 User Guide

1723-2. Opening, closing and locking the doors and trunk
LS600h/LS600hL_EE(OM50G20E)
■Operation signals
Doors:
The emergency flashers flash to indicate that the doors have been locked/unlocked.
(Locked: once; Unlocked: twice)
Windows and moon roof:
A buzzer sounds to indicate that th e windows and moon roof are operating.
■Welcome light illumination control
 P. 150
■Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a buzzer
sounds continuously for 5 seconds. Fully close the door to stop the buzzer, and lock
the vehicle once more.
■Security feature
 P. 150
■Alarm (if equipped)
Using the wireless remote control to lock the doors will set the alarm system.
( P. 103)
■Conditions affecting operation
 P. 159
■If the wireless remote control does not operate properly
Locking and unlocking the doors and trunk: Use the mechanical key. ( P. 603)
■Electronic key battery depletion
 P. 162
■When the electronic key battery is fully depleted
 P. 532
■Customization
Settings (e.g. wireless remote control system) can be changed.
(Customizable features P. 634)

2494-2. Driving procedures
4
Driving
LS600h/LS600hL_EE(OM50G20E)
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes with the shift
lever in P, the power switch will automatically turn off.
■Sounds and vibrations specific to a hybrid vehicle
 P. 88
■Electronic key battery depletion
 P. 162
■When the ambient temperature is low, such as during winter driving conditions
It may take time until the “READY” indicator comes on.
■Conditions affecting operation
 P. 159
■Notes for the entry function
 P. 160
■If the hybrid system does not start
The immobilizer system may not have been deactivated. ( P. 96)
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
■Steering lock
After turning the power switch off and opening and closing the doors, the steering
wheel will be locked due to the steering lock function. Operating the power switch
again automatically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if
the hybrid system is turned on and off repe atedly in a short period of time. In this
case, refrain from operating the hybrid system. After about 10 seconds, the steering
lock motor will resume functioning.
The green indicator light on the power switch
will flash and a message will be shown on the
multi-information display. Press the power
switch again while turning the steering wheel
left and right.

2504-2. Driving procedures
LS600h/LS600hL_EE(OM50G20E)
■When the power switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional imme-
diately.
■If the “READY” indicator does not come on
If the “READY” indicator does not come on when you press the power switch with
the shift lever in P and the brake pedal depressed, contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional immediately.
■If the hybrid system is malfunctioning
 P. 563
■If the electronic key battery is depleted
 P. 532
■If the smart entry & start system has been deactivated in a customized setting
 P. 603
CAUTION
■When starting the hybrid system
Always start the hybrid system while sitting in the driver’s seat. Do not depress the
accelerator pedal while starting the hybrid system under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■Caution while driving
If hybrid system failure occurs while the vehicle is moving, do not lock or open the
doors until the vehicle reaches a safe and complete stop. Activation of the steering
lock in this circumstance may lead to an accident, resulting in death or serious
injury.
■Stopping the hybrid system in an emergency
If you want to stop the hybrid system in an emergency while driving the vehicle,
press and hold the power switch for more than 2 seconds, or press it briefly 3 times
or more in succession. ( P. 547)
However, do not touch the power switch while driving except in an emergency.
Turning the hybrid system off while driving will not cause loss of steering or braking
control, however, power assist to the steering will be lost. This will make it more dif-
ficult to steer smoothly, so you should pull over and stop the vehicle as soon as it is
safe to do so.

4305-4. Using the interior lights
LS600h/LS600hL_EE(OM50G20E)
■Illuminated entry system
The lights automatically turn on/off according to power switch mode, the presence
of the electronic key, whether the doors are locked/unlocked, and whether the doors
are opened/closed.
■To prevent the 12-volt battery from being discharged
If the following lights remain on when the power switch is turned off, the lights will go
off automatically after 20 minutes:
●Interior lights
●Door courtesy lights
●Personal lights
●Inside door handle lights
●Seat belt buckle lights
●Footwell lights
●Power switch light
■Customization
Settings (e.g. The time elapsed before lights turn off) can be changed.
(Customizable features P. 634)
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.

475
6Maintenance and care
LS600h/LS600hL_EE(OM50G20E)
6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ................ 476
Cleaning and protecting
the vehicle interior..................480
6-2. Maintenance
Maintenance
requirements ............................483
6-3. Do-it-yourself maintenance
Do-it-yourself service
precautions................................486
Hood ...............................................489
Positioning a floor jack ............490
Engine compartment ............... 492
12-volt battery .............................502
Tires .................................................506
Tire inflation pressure .............. 525
Wheels ........................................... 527
Air conditioning filter ............... 529
Electronic key battery.............. 532
Checking and
replacing fuses .........................535
Light bulbs...................................... 541

5326-3. Do-it-yourself maintenance
LS600h/LS600hL_EE(OM50G20E)
●Small flathead screwdriver
●Small Phillips-head screwdriver
●Lithium battery CR1632
Take out the mechanical key.
Remove the cover.
Electronic key battery
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2

5336-3. Do-it-yourself maintenance
6
Maintenance and care
LS600h/LS600hL_EE(OM50G20E)
Remove the battery cover bolts
and remove the battery cover.
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
■Use a CR1632 lithium battery
●Batteries can be purchased at any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional, local electrical appliance shops or cam-
era stores.
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to local laws.
■When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer can
replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart entry & start system and wireless remote control will not function prop-
erly.
●The operational range will be reduced.
3
4

545
7When trouble arises
LS600h/LS600hL_EE(OM50G20E)
7-1. Essential information
Emergency flashers ..................546
If your vehicle has
to be stopped
in an emergency ...................... 547
7-2. Steps to take
in an emergency
If your vehicle needs
to be towed ............................... 548
If you think something
is wrong .......................................554
If a warning light turns
on or a warning buzzer
sounds......................................... 555
If a warning message
is displayed.................................563
If you have a flat tire
(vehicles with
a spare tire)................................ 567
If you have a flat tire
(vehicles without
a spare tire)................................ 578
If the hybrid system
will not start................................ 597
If the parking brake
cannot be released................. 599
If the electronic key does
not operate properly .............603
If the 12-volt battery
is discharged............................. 607
If your vehicle overheats ............ 611
If the vehicle becomes
stuck ...............................................616

5977-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 605)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 96)
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However,
depending on the type of malfunction, an interim measure is available
to start the hybrid system. ( P. 598)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 607)
●The 12-volt battery terminal connections may be loose or corroded.
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the situa-
tion. Check the following and perf orm the appropriate procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 247)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

6037-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
Use the mechanical key built in to the electronic keys to operate the
doors. ( P. 141)
Vehicles with an alarm: An alarm will sound if the alarm is set when the trunk or
doors are unlocked. ( P. 103)
■Doors
Remove the cover on the
driver’s door handle.
If the electronic key does not operate properly
If communication between the electronic key and vehicle is inter-
rupted ( P. 159) 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 hybrid system can be started by following the proce-
dure below.
Locking and unlocking the doors, unlocking the trunk and key
linked functions
1