warning LEXUS LS500 2018 Repair Manual

1153-2. Opening, closing and locking the doors and trunk
LS500_OM_OM50F54U_(U) 3
Before driving WARNING■
Caution regarding interference with
electronic devices●
People with implantable cardiac pace-
makers, cardiac resynchronization
therapy-pacemakers or implantable
cardioverter defibrillators should keep
away from the smart access system
with push-button start antennas.
( → P.107)
The radio waves may affect the opera-
tion of such devices. If necessary, the
entry function can be disabled. Ask
your Lexus dealer for details, such as
the frequency of radio waves and tim-
ing of the emitted radio waves. Then,
consult your doctor to see if you
should disable the entry function.●
Users of any electrical medical device
other than implantable cardiac pace-
makers, cardiac resynchronization
therapy-pacemakers or implantable
cardioverter defibrillators should con-
sult the manufacturer of the device for
information about its operation under
the influence of radio waves.
Radio waves could have unexpected
effects on the operation of such medi-
cal devices.
Ask your Lexus dealer for details on dis-
abling the entry function.

116 3-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 3-3.Adjusting the seats
■
Seat adjustment switches
Seat position adjustment switch
Seatback angle adjustment switch
Seat cushion (front) angle adjust-
ment switch
Vertical height adjustment switchFront seats WARNING■
When adjusting the seat position●
Take care when ad justing the seat
position to ensure that other passen-
gers are not injured by the moving
seat.●
Do not put your hands under the seat
or near the moving parts to avoid
injury.
Fingers or hands may become
jammed in the se at mechanism.●
Make sure to leave enough space
around the feet so they do not get
stuck.■
Seat adjustment
To reduce the risk of sliding under the lap
belt during a collision, do not recline the
seat more than necessary.
If the seat is too reclined, the lap belt may
slide past the hips and apply restraint
forces directly to the abdomen, or your
neck may contact the shoulder belt,
increasing the risk of death or serious
injury in the event of an accident.
Adjustments should not be made while
driving as the seat may unexpectedly
move and cause the driver to lose control
of the vehicle.
■
Operating the front passenger’s seat
from the driver’s seat or rear seat
Do not operate the front passenger’s seat
when a passenger is seated in it. In addi-
tion, do not let anyone sit down in the
front passenger’s seat while the seat is
being operated or when the head
restraint is being folded. The front pas-
senger may catch their legs between the
instrument panel and seat, or the head
restraint may interfer e with their head,
resulting in injury. ■
When the front passenger’s seat is
folded forward
If the outside rear view mirror is difficult
to see, due to the position of the front
passenger’s seat, mo ve the front passen-
ger’s seat to an appropriate position.
Doing so may lead to mishandling of the
vehicle and cause an accident, resulting
in death or serious injury.
NOTICE■
Operating the front passenger’s seat
from the driver’s seat or rear seat
Before operating the front passenger’s
seat, make sure that there is no luggage
or any other objects on the seat or in the
footwell that could prevent its operation.
Such items may result in excess force
being applied, causing damage to the
seat and/or the luggage.
Adjustment procedure
A
B
C
D

122 3-3. Adjusting the seats
LS500_OM_OM50F54U_(U) Applies pressure sequentially from the bot-
tom to the top of the seatback
 “Lower Body” Applies pressure sequentially from the
front to the back of the seat cushion
 “Lumbar” Applies pressure sequentially from the bot-
tom to the top of the lumbar area of the
seatback
4 Select the desired intensity and
then confirm the setting.The intensity can be adjusted in 5 steps.
To stop the operation select “Stop”.
If a seat is not occupi ed, do not operate the
front seat refresh system for that seat.
■
Refresh system●
Operating conditions
• The engine switch is in IGNITION ON
mode.
• The temperature in the cabin is not
extremely high.
• For the front passenger’s seat: The weight
of an occupant is detected on the front
passenger’s seat or the front passenger’s
seat belt is fastened.
Once weight is detect ed on the seat, the
seat will be judged as occupied until the
front passenger’s door is opened then
closed or the engine switch is turned off.
●
Automatic stop function
• The operation will be canceled automati-
cally after approximately 15 minutes.
•If the power easy ac cess system begins
operating, the front seat refresh system
will stop.
WARNING
■
Important points while driving
Do not adjust the driver’s seat refresh
system while driving.
Using it may affect your ability to control
the vehicle, possibly leading to an acci-
dent resulting in death or serious injury. ■
Using the refresh system ●
Those who are pregnant, have recently
given birth, or suffer from ailments
requiring rest (heart disease etc.)
should consult a doctor before use. ●
Do not allow children to use the
refresh function. ●
Do not use immediately after consum-
ing a meal or alcohol, or for an
extended period of time. ●
If you feel sick while using the refresh
function, immediately discontinue use.

1233-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 3
Before driving *
:If equipped
■
Manual operation
1 Display the home screen on the
Rear Multi Operation Panel
( → P.308) and then touch “Seat”.
2 Touch “Left” or “Right”.Power rear seat *
WARNING■
When adjusting the seat position●
Take care when ad justing the seat
position to ensure that other passen-
gers are not injured by the moving
seat.●
When adjusting the rear seat with an
ottoman, make sure there is sufficient
space so that a foot does not get
caught between the ottoman and front
passenger seat . (If equipped)●
Vehicle with rear seat entertainment
system: When the rear seat is moving
to the Entertainment Mode position,
do not allow hands near the rear dis-
play. Otherwise, a hand or finger may
be caught, possibly causing injury.■
Seat adjustment
To reduce the risk of sliding under the lap
belt during a collision, do not recline the
seat more than necessary.
If the seat is too reclined, the lap belt may
slide past the hips and apply restraint
forces directly to the abdomen, or your
neck may contact the shoulder belt,
increasing the risk of death or serious
injury in the event of an accident.
Adjustments should not be made while
driving as the seat may unexpectedly
move and cause the driver to lose control
of the vehicle.
■
Using the ottoman (if equipped)
●
Do not sit on the ottoman.
If someone sits on th e ottoman, the seat
belt cannot be fitted properly, and they
may be thrown from the seat, resulting in
death or serious injury in the event of an
accident or sudden braking. ●
When getting in or out of the vehicle,
retract the ottoman. If the ottoman is
not retracted, it may cause a fall, result-
ing in injury. ●
Do not operate the ottoman when the
vehicle is moving. ●
Do not allow anyone to put their hands
or feet under the re ar seat when stow-
ing the ottoman.
NOTICE■
To prevent an ottoman malfunction (if
equipped) ●
Do not place any objects in the rear
seat footwell that could prevent the
operation of the ottoman. ●
Do not place heavy luggage on the
ottoman. ●
Do not place any objects under the
ottoman while it is raised for use. These
objects may interfere with the ottoman
being folded, causing damage to the
ottoman or the objects themselves. ■
To prevent a rear display malfunction
(if equipped)
Do not attempt to move the rear display
by hand, as doing so may damage the
rear display.
Adjustment procedure

126 3-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 1 Press the seat switch.
2 Press the sub function button of the
Remote Touch. ( → P.304)
3 Select .The rear seat will move to the upright posi-
tion.
■
Operation of the rear seats from the
front seats
In the following situations, the rear seats
cannot be operated from the front seats.
●
When the armrest is stowed and weight
of an occupant, heavy object, etc. is
detected on a rear seat
Once weight is detect ed on the seat, the
seat will be judged as occupied until the
rear door is opened then closed or the
engine switch is turned off.
●
When the armrest is stowed and a rear
seat belt is fastened. The rear seat relaxation system utilizes
pneumatic chambers and dedicated
heaters, and applies pressure to the
occupant’s body at different modes
and intensities.
To display the rear seat relaxation sys-
tem screen, display the home screen
on the Rear Multi Operation Panel
( → P.308) and then touch “Relax-
ation”.
Touch to select the desired rear
seat.
Touch to select the desired mode. When a button is touched, operation will
begin.
Touch to adjust the intensity. The intensity can be adjusted in 5 steps.
Touch to turn the spot heaters
on/off.
Touch to stop the operation.Returning the rear seat from the
front seats
A WARNING■
When returning the rear seats to the
neutral position
To avoid injuring th e rear passengers,
wait until they have gotten out of the
vehicle before operating the switch.
Rear seat relaxation system (if
equipped)
A
B
C
D
E

1273-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 3
Before driving If a seat is not occupi ed, do not operate the
rear seat relaxation system for that seat. ■
Relaxation system●
Operating conditions
• The engine switch is in IGNITION ON
mode.
• The temperature in the cabin is not
extremely high.
• The weight of an occupant is detected on
the rear seat or the rear seat belt is fas-
tened.
Once weight is detect ed on the seat, the
seat will be judged as occupied until the
rear door is opened then closed or the
engine switch is turned off. ●
Automatic stop function
• The operation will be canceled automati-
cally after approximately 15 minutes.
• If the door for a seat that the relaxation
system is currently being used is opened,
the relaxation system will stop operating.
The seat and steering wheel are auto-
matically adjusted to allow the driver to
enter and exit the vehicle easily. 
Driver’s seat
When all of the following have been
performed, the seat and steering
wheel are automatically adjusted to a
position that allows driver to enter and
exit the vehicle easily.
• The shift position has been shifted to
P.
• The engine switch has been turned
off.
• The driver’s seat belt has been
unfastened. When the driver’s seat adjustment
switches are in front passenger mode
( → P.118), the seat and steering wheel will
not move.WARNING■
Using the relaxation system●
Those who are pregnant, have recently
given birth, or suffer from ailments
requiring rest (heart disease etc.)
should consult a doctor before use.
●
Do not allow children to use the relax-
ation function.
●
Do not use immediately after consum-
ing a meal or alcohol, or for an
extended period of time.
●
If you feel sick while using the relax-
ation function, immediately discon-
tinue use. Driving position memory This feature automatically adjusts
the positions of the front seats,
steering wheel, outside rear view
mirrors and head-up display (if
equipped) to make entering and
exiting the vehicle easier or to suit
your preferences.
Up to 3 different driving positions
can be recorded.
Each electronic key (including a
card key) can be registered to
recall your preferred driving posi-
tion.
Power easy access system

1293-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 3
Before driving button is pressed, press button “1”,
“2” or “3” until the buzzer sounds.If the selected button has already been
preset, the previously recorded position
will be overwritten.
When the driver’s seat adjustment
switches are in front passenger mode
( → P.118), the position of the driver’s seat
cannot be registered.
To record the position of the front pas-
senger’s seat, adjust the front passen-
ger’s seat to the desired position and
perform step 4 using the buttons on
the front passenger’s side. ■
In order to correctly use the driving
position memory function
If a seat position is already in the furthest
possible position and the seat is operated in
the same direction, the recorded position
may be slightly differen t when it is recalled.
1 Turn the engine switch to IGNI-
TION ON mode.
2 Check that the shift position is in P. 3 Press one of the buttons for the
driving position you want to recall
until the buzzer sounds. When the driver’s seat adjustment
switches are in front passenger mode
( → P.118), a driving position cannot be
recalled.
■
To stop the position recall operation
part-way through
Perform any of the following operations: ●
Press the “SET” button. ●
Press button “1”, “2” or “3”. ●
Press the mode change button. ●
Operate any of the seat adjustment
switches (only cancels seat position
recall). ●
Operate the tilt and telescopic steering
control switch (onl y cancels steering
wheel position recall). ■
Recalling a driving position
If a driving position is recalled, the move-
ment of the front seat may be stopped part-
way if the seat moves close to the rear seat.
If a rear passenger is determined to be in
the vehicle, the rearward movement of the
front seat may be stopped partway to
ensure sufficient space for the rear passen-
ger.
■
Recalling the front passenger’s seat
position (vehicles with a rear seat with
an ottoman)
If the ottoman of the rear seat is extended,
the front passenger’s se at position cannot
be recalled.WARNING
■
Seat adjustment caution
Take care during seat adjustment so that
the seat does not strike the rear passen-
ger or squeeze your body against the
steering wheel.
Recalling a driving position

1313-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 3
Before driving cle easier.
If the driving position is in a position that
has already been recorded, the seat and
outside rear view mirrors will not move.
2 Turn the engine switch to ACCES-
SORY mode or IGNITION ON
mode, or fasten a seat belt.The seat, steering wheel and head-up dis-
play (if equipped) will move to the
recorded position. ■
Recalling the driving position using the
memory recall function●
Different driving positions can be regis-
tered for each electronic key. Therefore,
the driving position that is recalled may
be different depending on the key being
carried.●
If a door other than the driver’s door is
unlocked with the smart access system
with push-button start, the driving posi-
tion cannot be recalled. In this case, press
the driving position button which has
been set.■
Customization
Some functions can be customized.
( → P.468) *
: If equipped
1 Turn the engine switch to IGNI-
TION ON mode.
2 Display the home screen on the
Rear Multi Operation Panel
( → P.308) and then touch “Seat”.
3 Touch “Left” or “Right”.
4 Adjust the rear seat to the desired
position and then touch “Set Mem-
ory”.
5 Touch “1” or “2”. If the preset is being used, the previously
recorded seat position will be overwritten.
■
In order to correctly use the position
memory function
If a seat position is already in the furthest
possible position and the seat is operated in
the same direction, the recorded position
may be slightly differen t when it is recalled.Rear seat position memory *
The rear seat position can be mem-
orized and recalled with the touch
of a button.
Recording a position into mem-
ory
WARNING
■
Seat adjustme nt caution
Take care during seat adjustment so that
the rear passengers do not strike the
front seats.

132 3-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 1 Turn the engine switch to IGNI-
TION ON mode.
2 Display the home screen on the
Rear Multi Operation Panel
( → P.308) and then touch “Seat”.
3 Touch “1” or “2”.When the operating conditions are not
met, the buttons will be grayed out.
To stop the operation touch “STOP”.
If the seat is adjust ed while a memorized
position is being recalled, the automatic
operation will stop. (The seat will change to
manual operation.)
■
Operating condition
The weight of an occupant is detected on
the rear seat or the rear seat belt is fas-
tened.
Once weight is detect ed on the seat, the
seat will be judged as occupied until the
rear door is opened then closed or the
engine switch is turned off. ■
Recalling a rear seat position
If a memorized rear seat position is recalled,
the seat may stop part-way to ensure suffi-
cient space for the rear passenger. ■
Recalling the ottoman position (if
equipped)
When a seat position is recalled, the otto-
man will not raise or extend. The ottoman
position can only be recalled if the memo-
rized position is lower and shorter than the
current position. 
Front seats
1 Press the seat switch.Recalling the memorized posi-
tion Head restraints Head restraints are provided for all
seats.
Vehicles with power rear seat: The
head restraint for the rear center
seat is integrated into the seatback
and cannot be adjusted. WARNING■
Head restraint precautions
Observe the following precautions
regarding the head re straints. Failure to
do so may result in death or serious
injury. ●
Use the head restraints designed for
each respective seat. ●
Adjust the head restraints to the cor-
rect position at all times. ●
Manual type: After adjusting the head
restraints, push down on them and
make sure they are locked in position. ●
Do not drive with the head restraints
removed.
Adjusting a head restraint verti-
cally and horizontally (power
head restraints)

1353-4. Adjusting the steering wheel and mirrors
LS500_OM_OM50F54U_(U) 3
Before driving 3-4.Adjusting the steering wheel and mirrors
Operating the switch moves the steer-
ing wheel in the following directions:
1 Up
2 Down
3 Toward the driver
4 Away from the driver ■
The steering wheel can be adjusted
when
The engine switch is in ACCESSORY or
IGNITION ON mode *
.*
: If the driver’s seat belt is fastened, the
steering wheel can be adjusted regard-
less of engine switch mode.
■
Automatic adjustment of the steering
position
A desired steering position can be entered
to memory and recalled automatically by
the driving position memory system.
( → P.127)
■
Power easy access system
The steering wheel and driver’s seat move
in accordance with engine switch mode and
the driver’s seat belt condition. ( → P.127)
■
Customization
Some functions can be customized.
( → P.468) Press on or close to the mark.Steering wheel
Adjustment procedure WARNING■
Caution while driving
Do not adjust the steering wheel while
driving.
Doing so may cause the driver to mis-
handle the vehicle and cause an acci-
dent, resulting in death or serious injury.
Sounding the horn