key battery LEXUS LS600H 2015 User Guide

2184-2. Driving procedures
LS600hL_U(OM50E41U)
■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. 7 9
■Electronic key battery depletion
P. 1 3 7
■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. 1 3 4
■Notes for the entry function
P. 1 3 5
■If the hybrid system does not start
The immobilizer system may not have been deactivated. ( P. 8 8 )
Contact your Lexus dealer.
■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 ov erheating, the motor may be suspended if
the hybrid system is turned on and off repeatedly in a short period of time. In this
case, refrain from operating the hybrid sy stem. 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.

2194-2. Driving procedures
4
Driving
LS600hL_U(OM50E41U)
■When the power switch indicator flashes in amber
The system may be malfunctio ning. Have the vehicle inspected by your Lexus dealer
immediately.
■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 your Lexus dealer imme-
diately.
■If the hybrid system is malfunctioning
 P. 5 0 3
■If the electronic key battery is depleted
P. 4 7 2
■If the smart access system with push-but ton start has been deactivated in a cus-
tomized setting
 P. 5 2 4
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 th an 2 seconds, or press it briefly 3 times
or more in succession. ( P. 485)
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.

3635-4. Using the interior lights
5
Interior features
LS600hL_U(OM50E41U)
■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
●Pe r s o n a l l i g h t s
●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. 5 6 4 )
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.

417
Maintenance and care6
LS600hL_U(OM50E41U)6-1. Maintenance and care
Cleaning and protecting the vehicle exterior.................. 418
Cleaning and protecting the vehicle interior .................. 422
6-2. Maintenance Maintenance requirements............................. 425
General maintena nce .............. 428
Emission inspection and maintenance (I/M)
programs .................................... 432
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ................................ 433
Hood ............................................... 436
Positioning a floor jack ............. 437
Engine compartment ............... 439
12-volt battery.............................. 450
Tires .................................................. 454
Tire inflation pressure ............... 464
Wheels ........................................... 467
Air conditioning filter ............... 469
Electronic key battery ...............472
Checking and replacing fuses ............................................... 474
Headlight aim .............................. 479
Light bulbs...................................... 481

4726-3. Do-it-yourself maintenance
LS600hL_U(OM50E41U)●
Flathead screwdriver
●Small flathead screwdriver
●Lithium battery CR1632
Take out the mechanical key.
Remove the cover.
To prevent damage to the key, cover
the tip of the screwdriver with a rag.
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
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
3

4736-3. Do-it-yourself maintenance
6
Maintenance and care
LS600hL_U(OM50E41U)
■Use a CR1632 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 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 access system with push-button start and wireless remote control will
not function properly.
●The operational range will be reduced.
CAUTION
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking. Keep
away from children. Failure to do so could result in death or serious injury.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other co mponent inside the remote control.
●Do not bend either of the battery terminals.

483
When trouble arises7
LS600hL_U(OM50E41U)7-1. Essential information
Emergency flas hers.................. 484
If your vehicle has to be stopped in an
emergency ................................ 485 7-2. Steps to take in an
emergency
If your vehicle needs to be towed ...........................................486
If you think something is wrong ........................................... 492
If a warning light turns on or a warning buzzer
sounds.......................................... 493
If a warning message is displayed.....................................503
If you have a flat tire (vehicles with
a spare tire)................................506
If you have a flat tire (vehicles with
run-flat tires)............................... 515
If the hybrid system will not start .........................................517
If the shift lever cannot be shifted from P............................. 519
If the parking brake cannot be released................. 520
If the electronic key does not operate properly ............. 524
If the 12-volt battery is discharged ................................. 527
If your vehicle overheats .........530
If the vehicle becomes stuck ............................................. 535

5177-2. Steps to take in an emergency
7
When trouble arises
LS600hL_U(OM50E41U)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 5 2 6 )
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 8 8 )
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctio ning due to an electrical problem
such as electronic key battery de pletion or a blown fuse. However,
depending on the type of malfuncti on, an interim measure is available
to start the hybrid system. ( P. 5 1 8 )
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 5 2 7 )
●The 12-volt battery terminal connecti ons may be loose or corroded.
If the hybrid system will not start
Reasons for the hybrid system not st arting 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. 2 1 6 )
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

5247-2. Steps to take in an emergency
LS600hL_U(OM50E41U)
Use the mechanical key built in to the electronic keys to operate the
doors. ( P. 121)
■Doors
Remove the cover on the
driver’s door handle.
Locks and unlocks the doorsLocks all the doors
Closes the windows and
moon roof (turn and hold)
Unlocks the door
Turning the key rearward
unlocks the driver’s door. Turn-
ing the key once again unlocks
the other doors.
Opens the windows and
moon roof (turn and hold)
If the electronic key does not operate properly
If communication between the ele ctronic key and vehicle is inter-
rupted ( P. 134) 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 us ed. In such cases, the doors and
trunk can be opened and the hybrid system can be started by following
the procedure below.
Locking and unlocking the doors, unlocking the trunk and key
linked functions
1
2
1
2
3
4

5267-2. Steps to take in an emergency
LS600hL_U(OM50E41U)
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of
the electronic key to the power
switch.
If any of the doors is opened or closed
after the key was touched to the
switch to start the vehicle, an alarm
will sound to indicate that the start
function cannot detect the key.
Press the power switch within 10 seconds of the buzzer sounding,
keeping the brake pedal depressed.
In the event that the hybrid system still cannot be started, contact your
Lexus dealer.
■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when stop-
ping the hybrid system.
■Replacing the key battery
As the above procedure is a temporary meas ure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery is depleted. ( P. 4 7 2 )
■Changing power switch modes
Within 10 seconds of the buzzer soundi ng, release the brake pedal and press the
power switch.
The hybrid system does not start and modes will be changed each time the switch is
pressed. ( P. 2 1 7 )
Starting the hybrid system
1
2
CAUTION
■When using the mechanical key and operating the power windows and moon
roof
Operate the power window or moon roof af ter checking to make sure that there is
no possibility of any passenger having any of their body parts caught in the window
or moon roof.
Also, do not allow children to operate the mechanical key. It is possible for children
and other passengers to get caught in the power window or moon roof.
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