2018 NISSAN ALTIMA ECU

2. Secure the child restraint anchor at-tachments to the LATCH lower an-
chors. Check to make sure the LATCH
attachment is properly attached to the
lower anchors.
If the child restraint is equipped with a
top tether strap, route the top tether
strap and secure the tether strap to
the tether anchor point. For additional
information, refer to “Installing top
tether strap” in this section.
Do not install child restraints that re-
quire the use of a top tether strap in seating positions that do not have a
top tether anchor.
3. The back of the child restraint should be secured against the vehicle seat-
back.
If necessary, adjust or remove the head
restraint/headrest (if so equipped) to
obtain the correct child restraint fit. If
the head restraint/headrest is re-
moved, store it in a secure place. Be
sure to reinstall the head
restraint/headrest (if so equipped)
when the child restraint is removed.
For additional information about head restraint/headrest adjustment (if so
equipped), refer to "Head
restraints/headrests" in this section.
If the seating position does not have
an adjustable head restraint/headrest
and it is interfering with the proper
child restraint fit, try another seating
position or a different child restraint.
Forward-facing webbing-mounted –
step 2
WRS0799
Forward-facing rigid-mounted – step 2
WRS0800
Safety—Seats, seat belts and supplemental restraint system1-33

4. For child restraints that are equippedwith webbing-mounted attachments,
remove any additional slack from the
anchor attachments. Press downward
and rearward firmly in the center of the
child restraint with your knee to com-
press the vehicle seat cushion and
seatback while tightening the webbing
of the anchor attachments.
5. Tighten the tether strap according to the manufacturer’s instructions to re-
move any slack. 6. Af ter attaching the child restraint, test
it before you place the child in it. Push it
from side to side while holding the child
restraint near the LATCH attachment
path. The child restraint should not
move more than 1 inch (25 mm), from
side to side. Try to tug it forward and
check to see if the LATCH attachment
holds the restraint in place. If the re-
straint is not secure, tighten the LATCH
attachment as necessary, or put the
restraint in another seat and test it
again. You may need to try a different
child restraint. Not all child restraints fit
in all types of vehicles. 7. Check to make sure the child restraint
is properly secured prior to each use. If
the child restraint is loose, repeat
steps 1 through 6.
Forward-facing – step 4
LRS0671
Forward-facing – step 6
WRS0697
1-34Safety—Seats, seat belts and supplemental restraint system

1Top tether strap
2Anchor point
Installing top tether strap
The child restraint top tether strap must be
used when installing the child restraint with
the LATCH lower anchor attachments.
First, secure the child restraint with the
LATCH lower anchors (rear outboard posi-
tions only).Rear bench seat
OUTBOARD SEATING POSITIONS
1. Remove the head restraint/headrest (if so equipped) and store it in a secure
place. Be sure to reinstall the head
restraint/headrest (if so equipped)
when the child restraint is removed. For
additional information about head
restraint/headrest (if so equipped) ad-
justment, removal and installation, refer
to "Head restraints/headrests" in this
section.
2. Position the top tether strap
1over
the seatback.
3. Secure the tether strap to the tether anchor point
2as shown.
4. Tighten the tether strap according to the manufacturer’s instructions to re-
move any slack.
If you have any questions when install-
ing a top tether strap, it is recommended
that you visit a NISSAN dealer for this
service.
WARNING
Child restraint anchorages are de-
signed to withstand only those loads
imposed by correctly fitted child re-
straints. Under no circumstances are
they to be used to attach adult seat
belts, or other items or equipment to
the vehicle. Doing so could damage the
child restraint anchorages. The child re-
straint will not be properly installed us-
ing the damaged anchorage, and a
child could be seriously injured or killed
in a collision.
Rear bench seat
LRS2627
Safety—Seats, seat belts and supplemental restraint system1-35

FORWARD-FACING CHILD
RESTRAINT INSTALLATION USING
THE SEAT BELTS
WARNING
The three-point seat belt with Auto-
matic Locking Retractor (ALR) must be
used when installing a child restraint.
Failure to use the ALR mode will result in
the child restraint not being properly
secured. The restraint could tip over or
be loose and cause injury to a child in a
sudden stop or collision. Also, it can
change the operation of the front pas-
senger air bag. For additional informa-
tion, refer to “Front passenger air bag
and status light” in this section.For additional information, refer to all Warn-
ings and Cautions in the “Child safety” and
“Child restraints” sections of this manual
before installing a child restraint.
Do not use the lower anchors if the com-
bined weight of the child and the child re-
straint exceeds 65 lbs. (29.5 kg). If the com-
bined weight of the child and the child
restraint is greater than 65 lbs. (29.5 kg), use
the vehicle’s seat belt (not the lower an-
chors) to install the child restraint. Be sure
to follow the child restraint manufacturer’s
instructions for installation. Follow these steps to install a forward-
facing child restraint using the vehicle seat
belt in the rear seats or in the front passen-
ger seat:
1. If you must install a child restraint in
the front seat, it should be placed in a
forward-facing direction only. Move
the seat to the rearmost position.
Child restraints for infants must be
used in the rear-facing direction and,
therefore, must not be used in the
front seat.
2. Position the child restraint on the seat. Always follow the child restraint manu-
facturer’s instructions.
The back of the child restraint should
be secured against the vehicle seat-
back.
If necessary, adjust or remove the head
restraint/headrest to obtain the cor-
rect child restraint fit. If the head
restraint/headrest (if so equipped) is
removed, store it in a secure place. Be
sure to reinstall the head
restraint/headrest (if so equipped)
when the child restraint is removed.
For additional information about head
restraint/headrest (if so equipped) ad-
justment, removal and installation, re-
Forward-facing (front passenger seat) – step 1
WRS0699
1-36Safety—Seats, seat belts and supplemental restraint system

fer to “Head restraints/headrests” in
this section.
If the seating position does not have
an adjustable head restraint/headrest
(if so equipped) and it is interfering with
the proper child restraint fit, try an-
other seating position or a different
child restraint.3. Route the seat belt tongue through thechild restraint and insert it into the
buckle until you hear and feel the latch
engage. Be sure to follow the child re-
straint manufacturer’s instructions for
belt routing.
If the child restraint is equipped with a
top tether strap, route the top tether
strap and secure the tether strap to
the tether anchor point (rear seat in-
stallation only). For additional informa-
tion, refer to “Installing top tether strap”
in this section. Do not install child restraints that re-
quire the use of a top tether strap in
seating positions that do not have a
top tether anchor.
Forward-facing – step 3
WRS0680
Safety—Seats, seat belts and supplemental restraint system1-37

8. Af ter attaching the child restraint, testit before you place the child in it. Push it
from side to side while holding the child
restraint near the seat belt path. The
child restraint should not move more
than 1 inch (25 mm), from side to side.
Try to tug it forward and check to see if
the belt holds the restraint in place. If
the restraint is not secure, tighten the
seat belt as necessary, or put the re-
straint in another seat and test it again.
You may need to try a different child
restraint. Not all child restraints fit in all
types of vehicles. 9. Check to make sure the child restraint
is properly secured prior to each use. If
the seat belt is not locked, repeat
steps 4 through 8.
10. If the child restraint is installed in thefront passenger seat, place the ignition
switch in the ON position. The front
passenger air bag status light
should illuminate. If this light is not illu-
minated, refer to “Front passenger air
bag and status light” in this section.
Move the child restraint to another
seating position. Have the system
checked. It is recommended that you
visit a NISSAN dealer for this service.
Af ter the child restraint is removed and the
seat belt is fully retracted, the ALR mode
(child restraint mode) is canceled.
Forward-facing – step 8WRS0698
Forward-facing – step 10
WRS0475
Safety—Seats, seat belts and supplemental restraint system1-39

1Top tether strap
2Anchor point
Installing top tether strap
The child restraint top tether strap must be
used when installing the child restraint with
seat belts.
First, secure the child restraint with the seat
belt.Rear bench seat
OUTBOARD SEATING POSITIONS
1. Remove the head restraint/headrest (if so equipped) and store it in a secure
place. Be sure to reinstall the head
restraint/headrest (if so equipped)
when the child restraint is removed. For
additional information about head
restraint/headrest (if so equipped) ad-
justment, removal and installation, refer
to "Head restraints/headrests" in this
section.
2. Position the top tether strap
1over
the seatback.
3. Secure the tether strap to the tether anchor point
2as shown.
4. Tighten the tether strap according to the manufacturer’s instructions to re-
move any slack.
CENTER SEATING POSITION 1. Position the top tether strap
1over the
seatback.
2. Secure the tether strap to the tether anchor point
2as shown. 3. Tighten the tether strap according to
the manufacturer’s instructions to re-
move any slack.
If you have any questions when install-
ing a top tether strap, it is recommended
that you visit a NISSAN dealer for this
service.
WARNING
Child restraint anchorages are de-
signed to withstand only those loads
imposed by correctly fitted child re-
straints. Under no circumstances are
they to be used to attach adult seat
belts, or other items or equipment to
the vehicle. Doing so could damage the
child restraint anchorages. The child re-
straint will not be properly installed us-
ing the damaged anchorage, and a
child could be seriously injured or killed
in a collision.
BOOSTER SEATS
For additional information on installing a
booster seat in your vehicle, follow the in-
structions outlined in this section.
Rear bench seat
LRS2627
1-40Safety—Seats, seat belts and supplemental restraint system

air bag OFF for specified child restraints as
required by the regulations. Failing to prop-
erly secure child restraints and to use the
ALR mode may allow the restraint to tip or
move in a collision or sudden stop. This can
also result in the passenger air bag inflat-
ing in a crash instead of being OFF. For
additional information about proper use
and installation, refer to “Child restraints” in
this section.
If the front passenger seat is not occupied,
the front passenger air bag is designed not
to inflate in a crash. However, heavy objects
placed on the seat could result in air bag
inflation, because of the object’s weight de-
tected by the occupant classification sen-
sor. Other conditions could also result in air
bag inflation, such as if a child is standing
on the seat, or if two children are on the
seat, contrary to the instructions in this
manual. Always be sure that you and all
vehicle occupants are seated and re-
strained properly.
Using the front passenger air bag status
light, you can monitor when the front pas-
senger air bag is automatically turned OFF.
If an adult occupant is in the seat but the
front passenger air bag status light is illu-
minated (indicating that the air bag is OFF),it could be that the person is a small adult,
or is not sitting on the seat properly or not
using the seat belt properly.
If a child restraint must be used in the front
seat, the front passenger air bag status
light may or may not be illuminated, de-
pending on the size of the child and the
type of child restraint being used. If the air
bag status light is not illuminated (indicat-
ing that the air bag might inflate in a crash),
it could be that the child restraint or seat
belt is not being used properly. Make sure
that the child restraint is installed properly,
the seat belt is used properly and the occu-
pant is positioned properly. If the air bag
status light is still not illuminated, reposi-
tion the occupant or child restraint in a rear
seat.
If the front passenger air bag status light
will not illuminate even though you believe
that the child restraint, the seat belts and
the occupant are properly positioned, it is
recommended that you take your vehicle
to a NISSAN dealer. A NISSAN dealer can
check system status by using a special
tool. However, until you have confirmed
with a dealer that your air bag is working
properly, reposition the occupant or child
restraint in a rear seat.The NISSAN Advanced Air Bag System and
front passenger air bag status light will
take a few seconds to register a change in
the front passenger seat status. This is nor-
mal system operation and does not indi-
cate a malfunction.
If a malfunction occurs in the front passen-
ger air bag system, the supplemental air
bag warning light
, located in the me-
ter and gauges area of the instrument
panel, will be illuminated (blinking or
steadily lit). Have the system checked. It is
recommended that you visit a NISSAN
dealer for this service.
Normal operation
In order for the occupant classification
sensor system to classif y the front passen-
ger based on weight, please follow the pre-
cautions and steps outlined below:
Precautions
∙ Make sure that there are no objects weighing over 9.1 lbs. (4 kg) hanging on
the seat or placed in the seatback
pocket.
∙ Make sure that a child restraint or other object is not pressing against the rear
of the seatback.
Safety—Seats, seat belts and supplemental restraint system1-55