2018 NISSAN ALTIMA service

WARNING
When fastening the seat belts, be cer-
tain that the seatbacks are completely
secured in the latched position. If they
are not completely secured, passengers
may be injured in an accident or sudden
stop.
Unfastening the seat belts
To unfasten the seat belt, press the button
on the buckle
1. The seat belt automati-
cally retracts.
Checking seat belt operation
Seat belt retractors are designed to lock
seat belt movement by two separate
methods:
∙ When the seat belt is pulled quickly from the retractor
∙ When the vehicle slows down rapidly To increase your confidence in the seat
belts, check the operation as follows:
∙ Grasp the shoulder belt and pull for- ward quickly. The retractor should lock
and restrict further belt movement.
If the retractor does not lock during this
check, get the system checked. It is recom-
mended that you visit a NISSAN dealer for
this service or to learn more about seat belt
operation.
WRS0139
1-18Safety—Seats, seat belts and supplemental restraint system

When installing a child restraint, carefully
read and follow the instructions in this
manual and those supplied with the child
restraint.Top tether anchor point locations
The child restraint top tether strap must be
used when installing the child restraint with
the LATCH lower anchor attachments or
seat belts. For additional information, refer
to “Installing top tether strap” in this sec-
tion.
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.
If you have any questions when install-
ing a top tether strap, it is recommended
that you visit a NISSAN dealer for this
service.
Anchor points
1are located on the rear
parcel shelf.
REAR-FACING CHILD RESTRAINT
INSTALLATION USING LATCH
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-
LATCH rigid-mounted attachment
LRS0662WRS0797
Safety—Seats, seat belts and supplemental restraint system1-27

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

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
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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

NISSAN Advanced Air Bag System
(front seats)
1. Top tether strap anchor
2. Roof-mounted curtain side-impactand rollover supplemental air bag infla-
tors
3. Rear seat belts
4. Roof-mounted curtain side-impact and rollover supplemental air bag
5. Front seat-mounted side-impact supplemental air bag
6. Head restraints/headrests
7. Front seat belts
8. Side-impact pressure sensor (driver’s side shown; front passenger’s side
similar)
9. Supplemental front-impact air bags
10. Seats
11. Occupant classification sensor (weight sensor)
12. Seat belt with pretensioner(s) (front seats)
13. LATCH (Lower Anchors and Tethers for CHildren) system
WARNING
To ensure proper operation of the pas-
senger’s NISSAN Advanced Air Bag Sys-
tem, please observe the following
items.
∙ Do not allow a passenger in the rearseat to push or pull on the seatback
pocket.
∙ Do not place heavy loads heavier than 9.1 lbs. (4 kg) on the seatback, head
restraint/headrest or in the seatback
pocket.
∙ Make sure that there is nothing press- ing against the rear of the seatback,
such as a child restraint installed in
the rear seat or an object stored on
the floor.
∙ Make sure that there is no object placed under the front passenger
seat.
∙ Make sure that there is no object placed between the seat cushion and
center console or between the seat
cushion and the door. ∙ If a forward facing child restraint is
installed in the front passenger seat,
do not position the front passenger
seat so the child restraint contacts the
instrument panel. If the child restraint
does contact the instrument panel,
the system may determine the seat is
occupied and the passenger air bag
may deploy in a collision. Also the
front passenger air bag status light
may not illuminate. For additional in-
formation about installing and using
child restraints, refer to "Child re-
straints" in this section.
∙ Confirm the operating condition with the front passenger air bag status
light.
∙ If you notice that the front passenger air bag status light is not operating as
described in this section, get the oc-
cupant classification system checked.
It is recommended that you visit a
NISSAN dealer for this service.
∙ Until you have confirmed with a dealer that your passenger seat occu-
pant classification system is working
properly, position the occupants in
the rear seating positions.
Safety—Seats, seat belts and supplemental restraint system1-51

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

NOTE:
A system check will be performed during
which the front passenger air bag status
light will remain lit for about 7 seconds
initially.
If the light is still ON af ter this, the person
should be advised not to ride in the front
passenger seat and the vehicle should be
checked as soon as possible. It is recom-
mended that you visit a NISSAN dealer for
this service.2. If the light is OFF with a small adult, child or child restraint occupying the
front passenger seat.
This may be due to the following con-
ditions that may be interfering with the
weight sensors:
∙ Small adult or child is not sitting upright, leaning against the seatback, and cen-
tered on the seat cushion with his/her
feet comfortably extended to the floor.
∙ The child restraint is not properly in- stalled, as outlined in the “Child re-
straints” section of this manual.
∙ An object weighing over 9.1 lbs. (4 kg) hanging on the seat or placed in the
seatback pocket. ∙ A child restraint or other object pressing
against the rear of the seatback.
∙ A rear passenger pushing or pulling on the back of the front passenger seat.
∙ Forcing the front seat or seatback against an object on the seat or floor
behind it.
∙ An object placed under the front pas- senger seat.
∙ An object placed between the seat cushion and center console.
If the vehicle is moving, please come to a
stop when it is safe to do so. Check and
correct any of the above conditions. Re-
start the vehicle and wait 1 minute.
NOTE:
A system check will be performed during
which the front passenger air bag status
light will remain lit for about 7 seconds
initially.
If the light is still OFF af ter this, the small
adult, child or child restraint should be re-
positioned in the rear seat and the vehicle
should be checked as soon as possible. It is
recommended that you visit a NISSAN
dealer for this service. 3. If the light is OFF with no front passen-
ger and no objects on the front pas-
senger seat, the vehicle should be
checked. It is recommended that you
visit a NISSAN dealer as soon as pos-
sible.
Other supplemental front-impact air
bag precautions
WARNING
∙ Do not place any objects on the steer- ing wheel pad or on the instrument
panel. Also, do not place any objects
between any occupant and the steer-
ing wheel or instrument panel. Such
objects may become dangerous pro-
jectiles and cause injury if the front air
bags inflate.
∙ Immediately af ter inflation, several front air bag system components will
be hot. Do not touch them; you may
severely burn yourself.
∙ No unauthorized changes should be made to any components or wiring of
the supplemental air bag system. This
is to prevent accidental inflation of
the supplemental air bag or damage
to the supplemental air bag system.
Safety—Seats, seat belts and supplemental restraint system1-57