LEXUS NX300h 2018 Workshop Manual

511-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U 1
For safety and security
A child restraint system for a small
child or baby must itself be properly
restrained on the seat with the lap por-
tion of the lap/shoulder belt. ■
Installing child restraint system
using a seat belt (child restraint
lock function belt)
Install the child restraint system in
accordance to the operation manual
enclosed with the child restraint sys-
tem. ■
Rear-facing — Infant seat/convert-
ible seat
1 Adjust the seatback If there is a gap between the child seat and
the seatback, adjust the seatback until
good contact is achieved.WARNING●
Do not allow the child to lean his/her
head or any part of his/her body
against the door or the area of the seat,
front pillars or roof side rails from
which the SRS side airbags or SRS
curtain shield airbags deploy even if
the child is seated in the child restraint
system. It is dangerous if the SRS side
and curtain shield airbags inflate, and
the impact could cause death or seri-
ous injury to the child.●
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.
When using a child restraint sys-
tem on a rear seat WARNING■
When installing a child restraint sys-
tem
Observe the following precautions. Fail-
ure to do so may result in death or seri-
ous injury. ●
Use child restraint system suitable to
the age and size of the child and install
it to the rear seat.
●
If the driver’s seat interferes with the
child restraint system and prevents it
from being attached correctly, attach
the child restraint system to the right-
hand rear seat. ●
Adjust the front passe nger seat so that
it does not interfere with the child
restraint system.
●
Do not allow the child to lean his/her
head or any part of his/her body
against the door or th e area of the seat,
rear pillars or roof side rails from which
the SRS curtain shield airbag deploys
even if the child is seated in the child
restraint system. It is dangerous if the
SRS curtain shield airbag inflates, and
the impact could cause death or seri-
ous injury to the child.
Child restraint system fixed with
a seat belt

52 1-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U 2 Place the child restraint system on
the rear seat facing the rear of the
vehicle.
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 down 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 After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely. ■
Forward-facing — Convertible seat
1 Adjust the seatback If there is gap between the child seat and
the seatback, adjust the seatback until
good contact is achieved.
2 If the head restraint interferes with
the child restraint system installa-
tion and the head restraint can be
removed, remove the head
restraint. ( → P.137)

531-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U 1
For safety and security 3 Place the child restraint system on
the seat facing the front of the vehi-
cle.
4 Run the seat belt through the child
restraint system and insert the plate
into the buckle. Make sure that the
belt is not twisted.
5 Fully extend the shoulder belt and
allow it to retract to put it in lock
mode. In lock mode, the belt cannot
be extended.
6 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.
7 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.57)
8 After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely. ■
Booster seat
1 High back type: If the head restraint
interferes with your child restraint
system, and the head restraint can
be removed, remove the head
restraint. ( → P.137)

54 1-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U 2 Place the child restraint system on
the seat facing the front of the vehi-
cle. 
Booster type 
High back type
3 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.27)
■
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.

551-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U 1
For safety and security
■
Child restraint LATCH anchors
LATCH anchors are provided for the
outboard rear seats. (Buttons display-
ing the location of the anchors are
attached to the seats.)
■
Installation with LATCH system
Install the child restraint system in
accordance to the operation manual WARNING■
When installing a child restraint sys-
tem
Observe the following precautions. Fail-
ure to do so may result in death or seri-
ous injury. ●
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 seat, adjust both
seatbacks at the same angle. Other-
wise, 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.28)■
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

56 1-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U enclosed with the child restraint sys-
tem.
1 Adjust the seatbackIf there is a gap between the child seat and
the seatback, adjust the seatback until
good contact is achieved.
2 If the head restraint interferes with
the child restraint system installa-
tion and the head restraint can be
removed, remove the head
restraint. ( → P.137)
Type A
3 Latch the hooks of the lower straps
onto the LATCH anchors.For owners in Canada:
The symbol on a child restraint system indi-
cates the presence of a lower connec-
tor system. 
Type B
3 Latch the buckles onto the LATCH
anchors. For owners in Canada:
The symbol on a child restraint system indi-
cates the presence of a lower connec-
tor system.
A A

571-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U 1
For safety and security
4 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.57)
5 After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely. ■
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. WARNING■
When installing a child restraint sys-
tem
Observe the following precautions. Fail-
ure to do so may result in death or seri-
ous injury. ●
Shake the child rest raint 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 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)

58 1-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U Anchor bracket
Anchor bracket for rear center seat
Anchor bracket for rear outboard
seats ■
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. 
Outboard rear seats
1 Adjust the head restraint to the
upmost position.If the head restraint interferes with the child
restraint system insta llation and the head
restraint can be removed, remove the head
restraint. ( → P.137)
2 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.
When installing the ch ild restraint system
with the head restraint being raised, be
sure to have the top tether strap pass
underneath the head restraint.
Top tether strap
Hook 
Rear center seat
1 Adjust the head restraint to the
downmost position. If the head restraint interferes with the child
restraint system instal lation and the head
restraint can be remove d, remove the head
restraint. ( → P.137)
2 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.
When installing the ch ild restraint system
with the head restraint being lower, be sure
to have the top tether strap pass over the A
B
C
A
B

591-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U 1
For safety and security top of the head restraint.
Top tether strap
Hook ■
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.
WARNING■
When installing a child restraint sys-
tem
Observe the following precautions. Fail-
ure to do so may result in death or seri-
ous injury. ●
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.
●
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.
●
Follow all installation instructions pro-
vided by the child restraint system
manufacturer. A
B ●
Outboard rear seats: When installing
the child restraint system with the head
restraint being rais ed, after the head
restraint has been raised and then the
anchor bracket has been fixed, do not
lower the head restraint. ●
Rear center seat: When installing the
child restraint system with the head
restraint being lowered, 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.

60 1-1. For safe use
LEXUS NX300h Owners Manu-
al_USA_OM78212U Exhaust gas precautions Harmful substance to the human
body are contained in exhaust
gases if inhaled. WARNING
Exhaust gases contain harmful carbon
monoxide (CO), which is colorless and
odorless. Observe the following precau-
tions.
Failure to do so may cause exhaust gases
enter the vehicle and may lead to an
accident caused by light-headedness, or
may lead to death or a serious health
hazard. ■
Important points while driving●
Keep the back door closed.●
If you smell exhaust gases in the vehi-
cle even when the back door is closed,
open the windows and have the vehi-
cle inspected at your Lexus dealer as
soon as possible.■
When parking●
If the vehicle is in a poorly ventilated
area or a closed area, such as a
garage, stop the hybrid system.
●
Do not leave the vehicle with the
hybrid system on for a long time. If
such a situation cannot be avoided,
park the vehicle in an open space and
ensure that exhaust fumes do not enter
the vehicle interior.
●
Do not leave the hybrid system operat-
ing in an area with snow build-up, or
where it is snowing. If snowbanks build
up around the vehicle while the hybrid
system is operating, exhaust gases
may collect and enter the vehicle. ■
Exhaust pipe
The exhaust system needs to be checked
periodically. If there is a hole or crack
caused by corrosion, damage to a joint
or abnormal exhaust noise, be sure to
have the vehicle inspected and repaired
by your Lexus dealer.