2018 NISSAN ALTIMA ECU

lations. If the front passenger air bag is OFF,
it will not inflate in a crash. The driver air bag
and other air bags in your vehicle are not
part of this system.
The purpose of the regulation is to help
reduce the risk of injury or death from an
inflating air bag to certain front passenger
seat occupants, such as children, by requir-
ing the air bag to be automatically turned
OFF. Certain sensors are used to meet the
requirements.
The occupant classification sensor in this
vehicle is a weight sensor. It is designed to
detect an occupant and objects on the
seat by weight. For example, if a child is in
the front passenger seat, the NISSAN Ad-
vanced Air Bag System is designed to turn
the front passenger air bag OFF in accor-
dance with the regulations. Also, if a child
restraint of the type specified in the regula-
tions is on the seat, its weight and the
child’s weight can be detected and cause
the air bag to turn OFF.
Front passenger seat adult occupants who
are properly seated and using the seat belt
as outlined in this manual should not
cause the front passenger air bag to be
automatically turned OFF. For small adults
it may be turned OFF, however if the occu-pant takes his/her weight off the seat
cushion (for example, by not sitting upright,
by sitting on an edge of the seat, or by
otherwise being out of position), this could
cause the sensor to turn the air bag OFF.
Always be sure to be seated and wearing
the seat belt properly for the most effective
protection by the seat belt and supple-
mental air bag.
NISSAN recommends that pre-teens and
children be properly restrained in a rear
seat. NISSAN also recommends that ap-
propriate child restraints and booster
seats be properly installed in a rear seat. If
this is not possible, the occupant classifica-
tion sensor is designed to operate as de-
scribed above to turn the front passenger
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 objectsplaced 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,

Warninglight Name Page
or
Anti-lock Braking
System (ABS)
warning light 2-11
Automatic Emer-
gency Braking
(AEB) system
warning light2-11
or
Brake warning
light
2-11
Charge warning
light2-12
Low tire pressure
warning light2-12
Master warning
light2-14
Warning
light Name Page
Power steering
warning light 2-14
Seat belt warning
light and chime 2-15
Supplemental air
bag warning light2-15
Indicator
light Name Page
Front fog light in-
dicator light (if so
equipped) 2-15
Front passenger
air bag status
light2-15
High beam indi-
cator light (blue)
2-16
Malfunction Indi-
cator Light (MIL)2-16
Indicator
light Name Page
Overdrive OFF
indicator light (if
so equipped) 2-17
Security indicator
light
2-17
Side light and
headlight indica-
tor light (green)2-17
Slip indicator light 2-17
Turn signal/
hazard indicator
lights2-17
Vehicle Dynamic
Control (VDC) OFF
indicator light2-17
WARNING AND INDICATOR LIGHTS
0-10Illustrated table of contents

WARNING
∙ Do not ride in a moving vehicle whenthe seatback is reclined. This can be
dangerous. The shoulder belt will not
be against your body. In an accident,
you could be thrown into it and re-
ceive neck or other serious injuries.
You could also slide under the lap belt
and receive serious internal injuries. ∙ For the most effective protection
when the vehicle is in motion, the seat
should be upright. Always sit well
back and upright in the seat with both
feet on the floor and adjust the seat
properly. For additional information,
refer to “Precautions on seat belt us-
age” in this section.
∙ Af ter adjustment, gently rock in the seat to make sure it is securely locked. ∙ Do not leave children unattended in-
side the vehicle. They could unknow-
ingly activate switches or controls or
make the vehicle move. Unattended
children could become involved in se-
rious accidents.
∙ To help avoid risk of injury or death through unintended operation of the
vehicle and/or its systems, do not
leave children, people who require the
assistance of others or pets unat-
tended in your vehicle. Additionally,
the temperature inside a closed ve-
hicle on a warm day can quickly be-
come high enough to cause a signifi-
cant risk of injury or death to people
and pets.
∙ Do not adjust the driver’s seat while driving so full attention may be given
to vehicle operation. The seat may
move suddenly and could cause loss
of control of the vehicle.
∙ The seatback should not be reclined any more than needed for comfort.
Seat belts are most effective when the
passenger sits well back and straight
up in the seat. If the seatback is re-
clined, the risk of sliding under the lap
belt and being injured is increased.
ARS1152
SEATS
1-2Safety—Seats, seat belts and supplemental restraint system

Lumbar support (if so equipped
for driver’s seat)
The lumbar support feature provides ad-
justable lower back support to the driver.
Push the switch as shown to adjust the
seat lumbar area.
FOLDING REAR SEAT
Interior trunk access
The trunk can be accessed from the driver
side and passenger side of the rear seat for
loading and unloading, as shown.1. Move the front passenger seat to the
most forward position.
2. Open the access cover on the rear par- cel shelf.
3. Push down on the button
1on the
rear parcel shelf.
4. Fold down the passenger’s side seat- back
2.
WARNING
∙ Never allow anyone to ride in thecargo area or on the rear seat when it
is in the fold-down position. Use of
these areas by passengers without
proper restraints could result in seri-
ous injury or death in an accident or
sudden stop.
∙ Properly secure all cargo with ropes or straps to help prevent it from sliding
or shif ting. Do not place cargo higher
than the seatbacks. In a sudden stop
or collision, unsecured cargo could
cause personal injury.
LRS2270
WRS0166
1-6Safety—Seats, seat belts and supplemental restraint system

∙ When returning the seatbacks to theupright position, be certain they are
completely secured in the latched po-
sition. If they are not completely se-
cured, passengers may be injured in
an accident or sudden stop.
∙ Closely supervise children when they are around cars to prevent them from
playing and becoming locked in the
trunk where they could be seriously
injured. Keep the car locked, with the
rear seatback and trunk lid securely
latched when not in use, and prevent
children’s access to car keys.
To fold down the driver’s side of the rear
seat, open the trunk and pull on the strap
1.
CENTER ARMREST
Pull the armrest down as shown.
LRS2168WRS0167
Safety—Seats, seat belts and supplemental restraint system1-7

WARNING
Head restraints/headrests supplement
the other vehicle safety systems. They
may provide additional protection
against injury in certain rear end colli-
sions. Adjustable head
restraints/headrests must be adjusted
properly, as specified in this section.
Check the adjustment af ter someone
else uses the seat. Do not attach any-
thing to the head restraint/headrest
stalks or remove the head
restraint/headrest. Do not use the seat
if the head restraint/headrest has been
removed. If the head restraint/headrest
was removed, reinstall and properly ad-
just the head restraint/headrest before
an occupant uses the seating position.
Failure to follow these instructions can
reduce the effectiveness of the head
restraints/headrests. This may in-
crease the risk of serious injury or death
in a collision.The illustration shows the seating posi-
tions equipped with head
restraints/headrests.

Indicates the seating position is
equipped with a head restraint.
 Indicates the seating position is equipped
with a headrest.
+ Indicates the seating position is not
equipped with a head restraint or headrest
(if applicable).
∙ Your vehicle is equipped with a head restraint/headrest that may be inte-
grated, adjustable or non-adjustable. ∙ Adjustable head restraints/headrests
have multiple notches along the stalk(s)
to lock them in a desired adjustment
position.
∙ The non-adjustable head restraints/ headrests have a single locking notch
to secure them to the seat frame.
∙ Proper Adjustment: – For the adjustable type, align thehead restraint/headrest so the cen-
ter of your ear is approximately level
with the center of the head
restraint/headrest.
– If your ear position is still higher than the recommended alignment, place
the head restraint/headrest at the
highest position.
∙ If the head restraint/headrest has been removed, ensure that it is reinstalled
and locked in place before riding in that
designated seating position.
LRS2695
HEAD RESTRAINTS/HEADRESTS
1-8Safety—Seats, seat belts and supplemental restraint system

ADJUSTABLE HEAD RESTRAINT/
HEADREST COMPONENTS
1. Removable head restraint/headrest
2. Multiple notches
3. Lock knob
4. Stalks
NON-ADJUSTABLE HEAD
RESTRAINT/HEADREST
COMPONENTS
1. Removable head restraint/headrest
2. Single notch
3. Lock knob
4. Stalks
REMOVE
Use the following procedure to remove the
head restraint/headrest:1. Pull the head restraint/headrest up to the highest position.
2. Push and hold the lock knob.
3. Remove the head restraint/headrest from the seat.
4. Store the head restraint/headrest properly in a secure place so it is not
loose in the vehicle.
LRS2300LRS2299LRS2302
Safety—Seats, seat belts and supplemental restraint system1-9

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