2017 LEXUS LS600H key battery

1593-2. Opening, closing and locking the doors and trunk
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Operation of each component
LS600h/LS600hL_EE(OM50G20E)
■Conditions affecting operation
The smart entry & start system uses weak radio waves. In the following situations, the
communication between the electronic key and the vehicle may be affected, pre-
venting the smart entry & start system, wi reless remote control and immobilizer sys-
tem from operating properly. (Ways of coping: P. 603)
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas station, radio station, large display, air-
port or other facility that generates strong radio waves or electrical noise
●When carrying a portable radio, cellular phone, cordless phone or other wireless
communication device
●When the electronic key is in contact with, or is covered by the following metallic
objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When multiple electronic keys are in the vicinity
●When other wireless keys (that emit radio waves) are being used nearby
●When carrying the electronic key together with the following devices that emit
radio waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or metallic objects are attached to the rear
window

1623-2. Opening, closing and locking the doors and trunk
LS600h/LS600hL_EE(OM50G20E)
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The card key battery life is about a year and
a half.)
●If the battery is low, an alarm will sound in the cabin when the hybrid system is
started or stopped. ( P. 154)
●The battery becomes depleted even if the electronic key is not used because the
key always receives radio waves. If the smart entry & start system or the wireless
remote control does not operate, or the detection area becomes smaller, the bat-
tery may be depleted. Replace the battery when necessary. ( P. 532)
●To avoid serious deterioration, do not leave the electronic key within 1 m (3 ft.) of
the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Table lamps
• Induction cookers
■When the electronic key battery is fully depleted
 P. 532
■Customization
Settings (e. g. smart entry & start system) can be changed.
(Customizable features P. 634)

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
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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
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