Page 475 of 676
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
Page 476 of 676

476
LS600h/LS600hL_EE(OM50G20E)
6-1. Maintenance and care
●Working from top to bottom, liberally apply water to the vehicle body,
wheel wells and underside of the vehi cle to remove any dirt and dust.
●Wash the vehicle body using a sponge or soft cloth, such as a chamois.
●For hard-to-remove marks, use car wash soap and rinse thoroughly
with water.
●Wipe away any water.
●Wax the vehicle when the waterproof coating deteriorates.
If water does not bead on a clean surface, apply wax when the vehicle body is
cool.
■Self-restoring coat
The vehicle body has a self-restoring coating that is resistant to small surface
scratches caused in a car wash etc.
●The coating lasts for 5 to 8 years from when the vehicle is delivered from the plant.
●The restoration time differs depending on the depth of the scratch and outside
temperature.
The restoration time may become shorter when the coating is warmed by applying
warm water.
●Deep scratches caused by keys, coins, etc. cannot be restored.
●Do not use wax that contain abrasives.
Cleaning and protecting the vehicle exterior
Perform the following to protect the vehicle and maintain it in prime
condition:
Page 532 of 676
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
Page 533 of 676
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
Page 545 of 676

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
Page 597 of 676

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.
Page 603 of 676
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
Page 604 of 676
6047-2. Steps to take in an emergency
LS600h/LS600hL_EE(OM50G20E)
Locks and unlocks the doors
Locks all the doors
Closes the windows and
moon roof* (turn and hold)
Unlocks all the doors
Opens the windows and
moon roof* (turn and hold)
*: If equipped
After the operation is com-
pleted, reinstall the cover.
Hook the upper claw of the
cover onto the upper catch on
the vehicle side, and then push
on the lower side of the cover.
Make sure that the lower claw of
the cover is securely fastened to
the lower catch on the vehicle side.
If the cover is not securely
attached, it may fall off while driv-
ing.
■Trunk
Turn the mechanical key clock-
wise to open.
2
1
2
3
4
3