2018 LEXUS LS500H trunk

380 6-2. Maintenance
LS500h_OM_OM50F42U_(U) Radiator/con-
denser The radiator and con-
denser should be free
from foreign objects.
( → P.391)
Washer fluid Is there sufficient
washer fluid?
( → P.392)
Trunk Items Check points
12-volt battery Check the connec-
tions. ( → P.393)
Vehicle interior Items Check points
Accelerator
pedal • The accelerator
pedal should move
smoothly (without
uneven pedal effort
or catching).
Hybrid transmis-
sion “Park” mech-
anism •When parked on a
slope and the shift
position is in P, is the
vehicle securely
stopped?
Brake pedal • Does the brake
pedal move
smoothly?
• Does the brake
pedal have appro-
priate clearance
from the floor?
• Does the brake
pedal have the cor-
rect amount of free
play? Items Check points
Brakes • The vehicle should
not pull to one side
when the brakes are
applied.
•The brakes should
work effectively.
• The brake pedal
should not feel
spongy.
• The brake pedal
should not get too
close to the floor
when the brakes are
applied.
Head restraints •Do the head
restraints move
smoothly and lock
securely?
Indicators/buzz-
ers •Do the indicators
and buzzers function
properly?
Lights • Do all the lights
come on?
Parking brake • Does the parking
brake operate nor-
mally?
• When parked on a
slope and the park-
ing brake is on, is the
vehicle securely
stopped?
Seat belts • Do the seat belts
operate smoothly?
• The seat belts should
not be damaged.Items Check points

3816-2. Maintenance
LS500h_OM_OM50F42U_(U) 6
Maintenance and care Seats • Do the seat controls
operate properly?
Steering wheel • Does the steering
wheel rotate
smoothly?
• Does the steering
wheel have the cor-
rect amount of free
play?
•There should not be
any strange sounds
coming from the
steering wheel.
Vehicle exterior Items Check points
Doors/trunk • Do the doors/trunk
operate smoothly?
Engine hood •Does the engine
hood lock system
work properly?
Fluid leaks •There should not be
any signs of fluid
leakage after the
vehicle has been
parked.Items Check points
Tires • Is the tire inflation
pressure correct?
• The tires should not
be damaged or
excessively worn.
• Have the tires been
rotated according to
the maintenance
schedule?
•The wheel nuts
should not be loose.
Windshield wip-
ers • The wiper blades
should not show any
signs of cracking,
splitting, wear, con-
tamination or defor-
mation.
• The wiper blades
should clear the
windshield without
streaking or skip-
ping.Items Check points

3936-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 6
Maintenance and care The 12-volt battery is located in the
trunk under the luggage mat.
Removing the luggage mat: → P.348
■
Before recharging
When recharging, the 12-volt battery pro-
duces hydrogen gas which is flammable
and explosive. Therefore, observe the fol-
lowing precautions before recharging: ●
If recharging with the 12-volt battery
installed on the vehicle, be sure to discon-
nect the ground cable. ●
Make sure the power switch on the char-
ger is off when connecting and discon-
necting the charger cables to the 12-volt
battery. ■
After recharging/reconnecting the
12-volt battery ●
Unlocking the doors using the smart
access system with push-button may not
be possible immediately after reconnect-
ing the 12-volt battery. If this happens, use
the wireless remote control or the
mechanical key to lo ck/unlock the doors.
●
Start the hybrid system with the power
switch in ACCESSORY mode. The
hybrid system may not start with the
power switch turned off. However, the
hybrid system will operate normally from
the second attempt.
●
The power switch mode is recorded by
the vehicle. If the 12-volt battery is recon-NOTICE■
Diluting washer fluid
Dilute washer fluid with water as neces-
sary.
Refer to the freezing temperatures listed
on the label of the washer fluid bottle.
12-volt battery
Location

4056-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 6
Maintenance and care  Stop the vehicle in a safe place on a
hard, flat surface.
 Set the parking brake.
 Shift the shift position to P.
 Disabling the height control. (if
equipped) ( → P.301)
 Stop the hybrid system. ■
Jack and tools
As your vehicle is equipped with run-flat
tires, the following tools for replacing a tire
are not included with your vehicle. They can
be purchased at your Lexus dealer. ●
Wheel nut wrench●
Jack●
Jack handleReplacing the tire When raising your vehicle with a
jack, position the jack correctly.
Improper placement may damage
your vehicle or cause injury.
If necessary tire replacement
seems difficult to perform, contact
your Lexus dealer.
Before jacking up the vehicle WARNING■
Using the tire jack
Observe the following precautions.
Improper use of the tire jack may cause
the vehicle to suddenly fall off the jack,
leading to death or serious injury. ●
Do not use the tire jack for any pur-
pose other than replacing tires or
installing and removing tire chains. ●
Do not use other tire jacks for replac-
ing tires on this vehicle. ●
Put the jack properly in its jack point. ●
Do not put any part of your body under
the vehicle while it is supported by the
jack. ●
Do not start the hybrid system or drive
the vehicle while the vehicle is sup-
ported by the jack. ●
Do not raise the vehicle while some-
one is inside. ●
When raising the vehicle, do not put an
object on or under the jack. ●
Do not raise the vehicle to a height
greater than that required to replace
the tire. ●
Use a jack stand if it is necessary to get
under the vehicle. ●
Make sure to disable all functions of
the vehicle height control of the elec-
tronically modulated air suspension
and then stopping the hybrid system.
( → P.301)●
When lowering the vehicle, make sure
that there is no-one near the vehicle. If
there are people nearby, warn them
vocally before lowering.
■
Replacing a flat tire for vehicles with
power trunk opener and closer
In cases such as when replacing tires,
make sure to turn off the trunk opener
main switch ( → P.118). Failure to do so
may cause the trunk lid to operate unin-
tentionally if the power trunk opener and
closer switch is accidentally touched,
resulting in hands and fingers being
caught and injured.

4156-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 6
Maintenance and care 
Driver’s side instrument panel Push the tab in and remove the lid.
Make sure to push the tab in during
removal or installation.

Passenger’s side instrument panel Push the tab in and remove the lid.
Make sure to push the tab in during
removal or installation.

Trunk Remove the luggage mat. ( → P.348)
Push the tab in and lift the lid off. 3 Remove the fuse with the pullout
tool.
Only type A fuse can be removed
using the pullout tool.
4 Check if the fuse is blown. Type A and B:
Replace the blown fuse with a new fuse of
an appropriate amperage rating. The
amperage rating can be found on the fuse
box lid.
Type C and D:
Contact your Lexus dealer.

4457-2. Steps to take in an emergency
LS500h_OM_OM50F42U_(U) 7
When trouble arises
Remove the cover inside the trunk and
pull the lever.
Using the lever to open the fuel filler
door may not allow for an adequate
reduction in fuel tank pressure before
refueling. To prevent fuel from spilling
out, turn the cap slowly when removing
it. During refueling, fuel may spill out
from the filler opening due to air being
discharged from inside the fuel tank.
Therefore, fill the fuel tank carefully and
slowly. ■
When the electronic key does not work
properly ●
Make sure that the smart access system
with push-button star t has not been dis-
abled at your Lexus dealer. If it has been
disabled, re-enable it. ●
Check if battery-saving mo de is set. If it is
set, cancel the function. ( → P.120)
■
Unlocking the door
Use the mechanical key ( → P.106) in
order to perform th e following opera-
tions:If the fuel filler door cannot
be opened If the fuel filler door opener switch
cannot be operated, contact your
Lexus dealer to service the vehicle.
In case where refueling is urgently
necessary, the following procedure
can be used to open the fuel filler
door.
Opening the fuel filler door If the electronic key does not
operate properly If communication between the
electronic key and vehicle is inter-
rupted ( → P.120) 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 used. In such cases, the
doors and trunk can be opened and
the hybrid system can be started by
following the procedure below.
NOTICE■
In case of a smart access system with
push-button start malfunction or
other key-rela ted problems
Take your vehicle with all the electronic
keys provided with your vehicle to your
Lexus dealer.
Locking and unlocking the
doors, unlocking the trunk

446 7-2. Steps to take in an emergency
LS500h_OM_OM50F42U_(U) 1 Pull the driver’s door handle and
insert the mechanical key.
2 Unlock the door.
3 Remove the key, return the handle,
and then pull the handle again. ■
Locking the door
1 With the door open, push down the
inside lock button.
2 Close the door. ■
Trunk
Turn the mechanical key clockwise to
open. ( → P.68) ■
Key linked functions
1 Closes the windows and the moon
roof (turn and hold)
2 Opens the windows and the moon
roof (turn and hold) These settings must be customized at your
Lexus dealer.
1 Depress the brake pedal. WARNING■
When using the mechanical key and
operating the power windows or
moon roof
Operate the power window or moon
roof after 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.
Starting the hybrid system

4477-2. Steps to take in an emergency
LS500h_OM_OM50F42U_(U) 7
When trouble arises 2 Touch the Lexus emblem side of the
electronic key to the power switch.When the electronic key is detected, a
buzzer sounds and the power switch will
turn to ON mode.
When the smart access system with
push-button start is de activated in custom-
ization setting, the powe r switch will turn to
ACCESSORY mode.
3 Firmly depress the brake pedal and
check that is shown on the
multi-information display.
4 Press the power switch.
In the event that the hybrid system still
cannot be started, contact your Lexus
dealer. ■
Stopping the hybrid system
Set the parking brake, shift the shift position
to P and press the power switch as you nor-
mally do when stopping the hybrid system.
■
Electronic key battery
As the above procedure is a temporary
measure, it is recomme nded that the elec-
tronic key battery be replaced immediately
when the battery is depleted. ( → P.413)
■
Changing power switch modes
Release the brake pedal and press the
power switch in step 3 above. The hybrid
system does not start and modes will be
changed each time the switch is pressed.
( → P.170) 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 by following the steps below. 
Method connecting jumper (or
booster) cables to the 12-volt bat-
tery
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.69)
2 Open the trunk lid and remove the
luggage mat. ( → P.348)In the event that the trunk opener cannot
be used, use the mechanical key to open
the trunk. ( → P.445)If the 12-volt battery is dis-
charged The following procedures may be
used to start the hybrid system if the
12-volt battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the hybrid system