2018 LEXUS LS500 lumbar support

471-2. Child safety
LS500_OM_OM50F54U_(U) 1
For safety and security
■
When installing a child restraint
system to a front passenger seat
For the safety of a child, install child
restraint systems to a rear seats. When
installing child restraint system to a
front passenger seat is unavoidable,
adjust the seat as follows and install the
child restraint system.  Move the front seat fully rearward.
 Adjust the seatback angle to the
most upright position.
 Adjust the front of the seat cushion
to the lowest position.
 Adjust the seat height to the upper-
most position.
 Adjust the lumbar support to the
lowest position.
 Adjust the shoulder bolster to the Installation method Page
Seat belt attachment P.49
Child restraint LATCH
anchors attachment P.53
Anchor brackets (for top
tether strap) attachment P.55
When using a child restraint sys-
tem

48 1-2. Child safety
LS500_OM_OM50F54U_(U) lowest position (if equipped).
 Adjust the pelvic support to the low-
est position.
 Adjust the seatback side bolster to
the widest position (if equipped).
 Adjust the seat cushion side bolster
to the lowest position (if equipped).
 Adjust the hip support to the lowest
position (if equipped).
 If the head restraint interferes with
the child restraint system installa-
tion and the head restraint can be
removed, remove the head restraint.
Otherwise, put the head restraint in
the upper most position.
■
When installing a child restraint
system to a power rear seat (if
equipped)
When using a child restraint system in
an outer rear seat, adjust the seat as
follows and install the child restraint
system.
 Adjust the seat cushion to the fully
rearward position.
 Adjust the upper seatback to the
rearmost position.
 Adjust the front of the seat cushion
to the lowest position.  Adjust the head restraint to the low-
est and rearmost position.
 Adjust the shoulder bolster to the
lowest position.
 Adjust the lumbar support to the
lowest position.
 Adjust the pelvic support to the low-
est position.
 Disable the automatic rear seat
operation. ( → P.308)
 For the rear seat with an ottoman (if
equipped): Adjust the seatback to
the most upright position and otto-
man (footrest) to the stowed posi-
tion.
WARNING
■
When using a child restraint system
Observe the following precautions.
Failure to do so may result in death or
serious injury.
●
Never install a rear-facing child
restraint system on the front passenger
seat even if the “AIR BAG OFF” indi-
cator light is illuminated. In the event of
an accident, the force of the rapid infla-
tion of the front passenger airbag can
cause death or serious injury to the
child if the rear-fac ing child restraint
system is installed on the front passen-
ger seat.

1173-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 3
Before driving Lumbar support adjustment switch
Seat cushion length adjustment
switch (if equipped) ■
Center Display
1 Press the seat switch.
2 Using the Remote Touch pad,
select “Driver Seat Adjustment” or
“Passenger Seat Adjustment”.
3 Select the button for the desired
adjustment.
Head restraint adjustment (if
equipped) ( → P.132)
Shoulder bolster adjustment (if
equipped)
Lumbar support adjustment
Pelvic support adjustment
Seatback side bolster adjustment (if
equipped)
Seat cushion side bolster adjust-
ment (if equipped) Hip support adjustment (if
equipped)
4 Perform adjustment using the dis-
played buttons. The seat will move while a button is
selected. ■
When adjusting the front seats
While adjusting a front seat, to avoid con-
tact with the ceiling, instrument panel or
rear seats, the operation of the seat may be
restricted or parts of th e seat other than that
being adjusted may move. ■
Operation after the engine switch is
turned off
After a certain time elapses after the engine
switch is turned off, the following parts of
the front seats will move to their neutral
positions. ●
Shoulder bolster (if equipped) ●
Lumbar support ●
Pelvic support ●
Seatback side bolster (if equipped) ●
Seat cushion side bolster (if equipped) ●
Hip support (if equipped) ■
Automatic angle adjustment of the rear
displays (if equipped)
When a seat is adjusted, the angle of the
rear display will be adjusted automatically
to maintain an optimal viewing angle for the
rear display from the rear seat.
■
Pre-collision seatback s for the passen-
ger seats
→ P.201, 211
■
Customization
Some functions can be customized.
( → P.468)E
F
A
B
C
D
E
F G

124 3-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 3 Select the button for the desired
adjustment.
Head restraint adjustment
( → P.132)
Shoulder bolster adjustment
Lumbar/pelvic support adjustment
Seatback angle adjustment
Seat cushion (front) angle adjust-
ment
Ottoman adjustment (if equipped)
4 Perform adjustment using the dis-
played buttons.The seat will move while a button is
touched. ■
Automatic operation
The seat can be moved to preset posi-
tions.
1 Display the home screen on the
Rear Multi Operation Panel
( → P.308) and then touch “Seat”.
2 Touch the desired preset button.When the operating conditions are not met, the preset buttons will be grayed out.
Moves the left-hand rear seat to the
upright position (Business Mode)
Moves the right-hand rear seat to
the upright position (Business
Mode)
Moves the rear seat with an otto-
man to a slightly reclined position
(Entertainment Mode) (if
equipped) Vehicle without rear seat entertainment
system: Moves the fron t passenger’s seat
forward.
Vehicle with rear seat entertainment sys-
tem: Moves the front passenger’s seat and
rear display to allow th e rear display to be
comfortably viewed.
Moves the rear seat with an otto-
man to a deeply reclined position
(Relaxation Mode) (if equipped) Moves the front passenger’s seat forward
and folds the seatback and head restraint
forward.
To stop the front passen ger seat while it is
moving, touch “STOP”.
■
Adjustment of the rear seat
When a rear seat is close to a front seat, the
operation of the rear se at may be restricted.
■
Operating conditions of Business Mode
When the rear seat belt is not fastened and A
B
C
D
E
F A
B
C
D

1253-3. Adjusting the seats
LS500_OM_OM50F54U_(U) 3
Before driving weight is not detected on the rear seat,
Business Mode cannot be selected.
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. ■
The rear seat with an ottoman cannot be
moved to Entertainment Mode/Relax-
ation Mode when (if equipped)
In the following situations, Entertainment
Mode or Relaxation Mode cannot be
selected: ●
The engine switch is in ACCESSORY
mode or off.●
The rear seat belt is not fastened and
weight is not detected on the 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. ●
The weight of an occupant or heavy
object, etc. is detected on the front pas-
senger’s seat.
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. ●
The front passenger’s seat belt is fas-
tened.●
The front passenger’s door is open.■
When the front passenger’s seat is
folded forward
→ P.120
■
Automatic angle adjustment of the rear
displays (if equipped)
When a seat is adjusted, the angle of the
rear display will be adjusted automatically
to maintain an optima l viewing angle for the
rear display from the rear seat.
■
Operation after the engine switch is
turned off
After a certain time el apses after the engine
switch is turned off, the following parts of
the rear seats will move to their neutral
positions. ●
Shoulder bolster ●
Lumbar/pelvic support ■
Seat return function linked to the door
opening operation
The rear seat will return to the upright posi-
tion automatically when the rear door is
opened for easier entry and exit of the vehi-
cle.
For the rear seat with an ottoman (if
equipped): When the rear door on the side
with the rear seat with an ottoman is
opened, the seatback of the rear seat with
an ottoman will move to a more upright
position. The seatback will move to the
upright position after the door is closed and
the system determines that the rear passen-
ger has exited.
However, if the armres t is stowed, the rear
seat will not move. ■
Shift-linked rear seat reclining function
When the shift position is shifted from P, to
enhance rear visibility for the driver, the rear
seats will recl ine slightly.
However, the shift-linke d rear seat reclining
function will not operate in the following sit-
uations: ●
The weight of an occupant or heavy
object, etc. is detected on a rear seat.
Once weight is detected 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.
●
A rear seat belt is fastened. ●
A rear door is open. ●
The armrest is stowed.
When a front seat is close to a rear seat, the
rear seats may not operate or the range of
movement may be restricted.
■
Pre-collision seatback s for the passen-
ger seats
→ P.201, 211
■
Customization
Some functions can be customized.
( → P.468)

128 3-3. Adjusting the seats
LS500_OM_OM50F54U_(U) On vehicles with adjustable seat cush-
ion side bolsters, when the driver’s
door is opened with the engine switch
off, the seat cushio n side bolsters will
lower if they are in the default position.
When any of the following has been
performed, the seat and steering
wheel automatically return to their
original positions.
• The engine switch has been turned
to ACCESSORY mode or IGNI-
TION ON mode.
• The driver’s seat belt has been fas-
tened. 
Front passenger’s seat
If all of the following have been per-
formed while the vehicle is stopped,
the lumbar support, pelvic support,
shoulder bolster (if equipped), seat-
back side bolster (if equipped), and hip
support (if equipped) will be moved to
their default position. On vehicles with
adjustable seat cushion side bolsters,
the seat cushion side bolsters will
lower.
• The passenger’s seat belt has been
unfastened.
• The front passenger’s door is
opened. ■
Operation of the power easy access sys-
tem ●
When exiting the vehicle, the power easy
access system may not operate if the seat
is already in the rearmost or uppermost
position or close to the rear seat. ●
If the seat position is adjusted during
power easy access syst em operation, the
automatic operation will stop. (The seat
will change to manual operation.) ●
If the seat position is adjusted during or
after the power easy access system oper-
ation when the driver is exiting the vehi-
cle, the power easy access system will not
operate when entering the vehicle. ■
Seat cushion side bolster adjustment (if
equipped)
If the seat cushion side bolsters have been
lowered, when the front door is closed, the
seat cushion side bolsters will move to their
default position.
If the seat is adjusted while the seat cushion
side bolsters are moving to the default posi-
tion, their movement will be temporarily
suspended. (The seat cushion side bolsters
will move to the default position after a cer-
tain amount of time.) ■
Customization
Some functions can be customized.
( → P.468)
1 Turn the engine switch to IGNI-
TION ON mode.
2 Check that the shift position is in P.
3 Adjust the driver’s seat, steering
wheel, outside rear view mirrors
and head-up display (if equipped)
to the desired positions.
4 While pressing the “SET” button, or
within 3 seconds after the “SET” Recording a driving position into
memory