LEXUS LS500H 2018 Workshop Manual

511-2. Child safety
LS500h_OM_OM50F42U_(U) 1
For safety and security able, refer to P.47 for front passenger
seat adjustment. 
When using the rear seat
If there is a gap between the child seat
and the seatback, adjust the seatback
angle until good contact is achieved.
2 Place the child restraint system on
the seat facing the front of the vehi-
cle.
3 Run the seat belt through the child
restraint system and insert the plate
into the buckle. Make sure that the
belt is not twisted.
4 Fully extend the shoulder belt and
allow it to retract to put it in lock mode. In lock mode, the belt cannot
be extended.
5 While pushing the child restraint
system into the rear seat, allow the
shoulder belt to retract until the
child restraint system is securely in
place. After the shoulder belt has retracted to a
point where there is no slack in the belt,
pull the belt to check that it cannot be
extended.
6 If the child restraint has a top tether
strap, follow the child restraint man-
ufacturer’s operation manual
regarding the installation, using the
top tether strap to latch onto the
top tether strap anchor. ( → P.55)
7 After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely.
( → P.53)

52 1-2. Child safety
LS500h_OM_OM50F42U_(U) ■
Booster seat
1 If installing the child restraint sys-
tem to the front passenger seat is
unavoidable, refer to P.47 for front
passenger seat adjustment.
2 Place the child restraint system on
the seat facing the front of the vehi-
cle. 
Booster type 
High back type
4 Sit the child in the child restraint
system. Fit the seat belt to the child
restraint system according to the
manufacturer’s in structions and
insert the plate into the buckle.
Make sure that the belt is not
twisted.Check that the shoulder belt is correctly
positioned over the child’s shoulder and
that the lap belt is as low as possible. ( → P.24)
■
Removing a child restraint system
installed with a seat belt
Press the buckle release button and
fully retract the seat belt. When releasing the buckle, the child
restraint system may sp ring up due to the
rebound of the seat cushion. Release the
buckle while holding down the child
restraint system.
Since the seat belt auto matically reels itself,
slowly return it to the stowing position.
WARNING
■
When installing a child restraint sys-
tem
Observe the following precautions.
Failure to do so may result in death or
serious injury.

531-2. Child safety
LS500h_OM_OM50F42U_(U) 1
For safety and security
■
Child restraint LATCH anchors
LATCH anchors are provided for the
outboard rear seat. (Buttons displaying
the location of the anchors are
attached to the seats.)
■
Installation with LATCH system
Install the child restraint system in WARNING●
Do not allow children to play with the
seat belt. If the seat belt becomes
twisted around a child’s neck, it may
lead to choking or other serious inju-
ries that could result in death.
If this occurs and the buckle cannot be
unfastened, scissors should be used to
cut the belt.●
Ensure that the belt and plate are
securely locked and the seat belt is not
twisted.●
Shake the child restraint system left
and right, and forward and backward
to ensure that it has been securely
installed.●
After securing a child restraint system,
never adjust the seat.●
When a booster seat is installed,
always ensure that th e shoulder belt is
positioned across the center of the
child’s shoulder. The belt should be
kept away from the child’s neck, but
not so that it could fall off the child’s
shoulder.●
Follow all installation instructions pro-
vided by the child restraint system
manufacturer.
●
When securing some types of child
restraint systems in rear seats, it may
not be possible to properly use the
seat belts in position s next to the child
restraint without inte rfering with it or
affecting seat belt effectiveness. Be
sure your seat belt fits snugly across
your shoulder and low on your hips. If it
does not, or if it interferes with the
child restraint, move to a different posi-
tion. Failure to do so may result in
death or serious injury. ●
When installing a child restraint system
in the rear center se at, adjust both seat
cushions to the same position and
align both seatbacks at the same
angle. Otherwise, the child restraint
system cannot be securely restrained
and this may cause death or serious
injuries in the event of sudden braking,
sudden swerving or an accident. ■
When installing a booster seat
To prevent the belt from going into ALR
lock mode, do not fully extend the shoul-
der belt. ALR mode causes the belt to
tighten only. This could cause injury or
discomfort to the child. ( → P.26)■
Do not use a seat belt extender
If a seat belt extender is used when
installing a child restra int system, the seat
belt will not securely hold the child
restraint system, which could cause
death or serious injury to the child or
other passengers in the event of sudden
braking, sudden swerving or an accident.
Child restraint system fixed with
a child restraint LATCH anchor

54 1-2. Child safety
LS500h_OM_OM50F42U_(U) accordance to the operation manual
enclosed with the child restraint sys-
tem.
1 Vehicles with power rear seat:
Adjust the seatIf there is a gap between the child seat and
the seatback, adjust the seatback angle
until good contact is achieved. ( → P.48)
2 Open the cover.
3 Insert the tab into the slit of
the cover.The cover will be held open. 
Type A
4 Latch the hooks of the lower straps
onto the LATCH anchors.
For owners in Canada:
The symbol on a child restraint sys-
tem indicates the presence of a
lower connector system.
Canada only 
Type B
4 Latch the buckles onto the LATCH
anchors.
For owners in Canada:
The symbol on a child restraint sys-B A A
A

551-2. Child safety
LS500h_OM_OM50F42U_(U) 1
For safety and security tem indicates the presence of a
lower connector system.
Canada only
5 If the child restraint has a top tether
strap, follow the child restraint man-
ufacturer’s operation manual
regarding the installation, using the
top tether strap to latch onto the
top tether strap anchor. ( → P.55)
6 After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely.
( → P.53)■
Laws and regulations pertaining to
anchors
The LATCH system conforms to
FMVSS225 or CMVSS210.2.
Child restraint systems conforming to
FMVSS213 or CMVSS213 specifications
can be used.
This vehicle is designed to conform to SAE
J1819. ■
Anchor brackets (for top tether
strap)
Anchor brackets are provided for each
rear seat.
Use anchor brackets when fixing the
top tether strap.A
A WARNING■
When installing a child restraint sys-
tem
Observe the following precautions.
Failure to do so may result in death or
serious injury. ●
After securing a child restraint system,
never adjust the seat. ●
When using the LATCH anchors, be
sure that there are no foreign objects
around the anchors and that the seat
belt is not caught behind the child
restraint system. ●
Follow all installation instructions pro-
vided by the child restraint system
manufacturer. ●
When securing some types of child
restraint systems in rear seats, it may
not be possible to properly use the
seat belts in position s next to the child
restraint without interfering with it or
affecting seat belt effectiveness. Be
sure your seat belt fits snugly across
your shoulder and low on your hips. If it
does not, or if it interferes with the
child restraint, move to a different posi-
tion. Failure to do so may result in
death or serious injury.
Using an anchor bracket (for top
tether strap)

56 1-2. Child safety
LS500h_OM_OM50F42U_(U) 
Outboard rear seats
Anchor brackets
Top tether strap 
Rear center seat
Anchor bracket
Top tether strap ■
Fixing the top tether strap to the
anchor bracket
Install the child restraint system in
accordance to the operation manual
enclosed with the child restraint sys-
tem.
Open the anchor bracket cover, latch
the hook onto the anchor bracket and
tighten the top tether strap. Make sure the top tether strap is securely
latched. ( → P.53) 
Outboard rear seats
Hook
Top tether strap 
Rear center seat
Hook
Top tether strap ■
Laws and regulations pertaining to
anchors
The LATCH system conforms to
FMVSS225 or CMVSS210.2.
Child restraint systems conforming to
FMVSS213 or CMVSS213 specifications
can be used.
This vehicle is designed to conform to SAE
J1819.A
B
A
B
WARNING
■
When installing a child restraint sys-
tem
Observe the following precautions.
Failure to do so may result in death or
serious injury. A
B
A
B

571-2. Child safety
LS500h_OM_OM50F42U_(U) 1
For safety and security WARNING●
Firmly attach the top tether strap and
make sure that the belt is not twisted.●
Do not attach the top tether strap to
anything other than the anchor
bracket.●
After securing a child restraint system,
never adjust the seat.●
Follow all installation instructions pro-
vided by the child restraint system
manufacturer.●
Be sure to have the top tether strap
pass over the top of the head restraint.
If the belt passes below the head
restraint, it is possible that the child
restraint system may not be securely
fixed.
NOTICE■
Anchor brackets (for top tether
strap)
When not in use, make certain to close
the lid. If it remains open, the lid may be
damaged.

58 1-3. Hybrid system
LS500h_OM_OM50F42U_(U) 1-3.Hybrid system
■
System components
The illustration is an example for explanation and may differ from the actual item.
Gasoline engine
Electric motor (traction motor) ■
When stopped/during start off
The gasoline engine stops *
when the
vehicle is stopped. During start off, the
electric motor (traction motor) drives
the vehicle. At slow speeds or when
traveling down a gentle slope, the
engine is stopped *
and the electric
motor (traction motor) is used.
When the shift position is in N, the hybrid battery (traction battery) is not
being charged. *
: When the hybrid battery (traction bat-
tery) requires charging or the engine is
warming up, etc., the gasoline engine will
not automatically stop.
■
During normal driving
The gasoline engine is predominantly
used. The electric motor (traction
motor) charges the hybrid battery Hybrid system features Your vehicle is a hybrid vehicle. It has characteristics different from conven-
tional vehicles. Be sure you are closely familiar with the characteristics of your
vehicle, and operate it with care.
The hybrid system combines the use of a gasoline engine and an electric motor
(traction motor) according to driving conditions, improving fuel efficiency and
reducing exhaust emissions.
System components
A
B

591-3. Hybrid system
LS500h_OM_OM50F42U_(U) 1
For safety and security (traction battery) as necessary. ■
When accelerating sharply
When the accelerator pedal is
depressed heavily, the power of the
hybrid battery (traction battery) is
added to that of the gasoline engine via
the electric motor (traction motor). ■
When braking (regenerative brak-
ing)
The wheels operate the electric motor
(traction motor) as a power generator,
and the hybrid battery (traction bat-
tery) is charged. ■
Regenerative braking
In the following situations, kinetic energy is
converted to electric energy and decelera-
tion force can be obta ined in conjunction
with the recharging of the hybrid battery
(traction battery). ●
The accelerator pedal is released while
driving with the shift position in D or M.●
The brake pedal is depressed while driv-
ing with the shift position in D or M.■
EV indicator
The EV indicator comes on when the vehi-
cle is driven using only the electric motor
(traction motor) or th e gasoline engine is
stopped.
■
Conditions in which the gasoline engine
may not stop
The gasoline engine starts and stops auto-
matically. However, it may not stop auto-
matically in the following conditions:
●
During gasoline engine warm-up ●
During hybrid battery (traction battery)
charging ●
When the temperature of the hybrid bat-
tery (traction battery) is high or low ●
When the heater is switched on ●
When the shift position is in M
Depending on the circumstances, the gaso-
line engine may also not stop automatically
in other situations. ■
Charging the hybrid battery (traction
battery)
As the gasoline engine charges the hybrid
battery (traction battery), the battery does
not need to be charged from an outside
source. However, if the vehicle is left parked
for a long time the hybrid battery (traction
battery) will slowly discharge. For this rea-
son, be sure to drive the vehicle at least
once every few months for at least 30 min-
utes or 10 miles (16 km ). If the hybrid bat-
tery (traction battery) becomes fully
discharged and you are unable to contact
your Lexus dealer. ■
Charging the 12-volt battery
→ P.447 ■
After the 12-volt battery has discharged
or when the terminal has been removed
and installed during exchange, etc.
The gasoline engine may not stop even if
the vehicle is being driven by the hybrid bat-
tery (traction battery). If this continues for a
few days, contact your Lexus dealer. ■
Sounds and vibrations specific to a
hybrid vehicle
There may be no engine sound or vibration
even though the vehicle is able to move with
the “READY” indicator is illuminated. For
safety, apply the parking brake and make
sure to shift the shift position to P when
parked.
The following sounds or vibrations may
occur when the hybrid system is operating
and are not a malfunction:
●
Motor sounds may be heard from the
engine compartment.
●
Relay operating sounds such as a snap or
soft clank will be em itted from the hybrid
battery (traction battery), behind the rear

60 1-3. Hybrid system
LS500h_OM_OM50F42U_(U) seats, when the hybrid system is started
or stopped.●
Sounds may be heard from the hybrid
battery (traction battery) behind the rear
seats when the hybrid system starts or
stops.●
Sounds from the hybrid system may be
heard when the trunk lid is open.●
Sounds may be heard from the transmis-
sion when the gasoline engine starts or
stops, when driving at low speeds, or
during idling.●
Engine sounds may be heard when
accelerating sharply.●
Sounds may be heard due to regenera-
tive braking when the brake pedal is
depressed or as the accelerator pedal is
released.●
Vibration may be felt or sounds may be
heard when the gasoline engine starts or
stops.●
Cooling fan sounds may be heard from
the air intake vents on the both sides of
the rear seatback.■
Maintenance, repair, recycling, and dis-
posal
Contact your Lexus dealer regarding main-
tenance, repair, recycling and disposal. Do
not dispose of the vehicle yourself. ■
Customization
Some functions can be customized.
( → P.481)
When driving with the gasoline engine
stopped, a sound, which changes in
accordance with the driving speed, will
be played in order to warn people
nearby of the vehicle’s approach. The
sound will stop when the vehicle speed
exceeds approximately 15 mph (25
km/h). ■
Vehicle proximity notification system
In the following cases, the vehicle proximity
notification system may be difficult for sur-
rounding people to hear. ●
In very noisy areas ●
In the wind or the rain
Also, as the vehicle proximity notification
system is installed on the front of the vehicle,
it may be more difficult to hear from the rear
of the vehicle compared to the front. ■
Customization
Some functions can be customized.
( → P.481)
Vehicle proximity notification
system