2018 NISSAN ALTIMA SL sensor

∙ The driver and front passenger seatbelt buckles are equipped with sen-
sors that detect if the seat belts are
fastened. The NISSAN Advanced Air
Bag System monitors the severity of a
collision and seat belt usage, then in-
flates the air bags as needed. Failure
to properly wear seat belts can in-
crease the risk or severity of injury in
an accident.
∙ The front passenger seat is equipped with an occupant classification sen-
sor (weight sensor) that turns the
front passenger air bag and passen-
ger knee air bag OFF under some con-
ditions. This sensor is only used in this
seat. Failure to be properly seated and
wearing the seat belt can increase the
risk or severity of injury in an accident.
For additional information, refer to
“Front passenger air bag and status
light” in this section.
∙ Keep hands on the outside of the steering wheel. Placing them inside
the steering wheel rim could increase
the risk that they are injured when the
front air bag inflates.

15. LATCH (Lower Anchors and Tethers forCHildren) system
16. Satellite sensors
17. Rear outboard seat-mounted side- impact supplemental air bags

∙ Modif ying or tampering with the frontpassenger seat may result in serious
personal injury. For example, do not
change the front seats by placing ma-
terial on the seat cushion or by install-
ing additional trim material, such as
seat covers, on the seat that are not
specifically designed to assure proper
air bag operation. Additionally, do not
stow any objects under the front pas-
senger seat or the seat cushion and
seatback. Such objects may interfere
with the proper operation of the occu-
pant classification sensor (weight
sensor).
∙ No unauthorized changes should be made to any components or wiring of
the seat belt system. This may affect
the front air bag system. Tampering
with the seat belt system may result
in serious personal injury. ∙ It is recommended that you visit a
NISSAN dealer for work on and around
the front air bag system. It is also rec-
ommended that you visit a NISSAN
dealer for installation of electrical
equipment. The Supplemental Re-
straint System (SRS) wiring har-
nesses* should not be modified or dis-
connected. Unauthorized electrical
test equipment and probing devices
should not be used on the air bag
system.
∙ A cracked windshield should be re- placed immediately by a qualified re-
pair facility. A cracked windshield
could affect the function of the
supplemental air bag system.
*The SRS wiring harness connectors are
yellow and orange for easy identifica-
tion.
When selling your vehicle, we request that
you inform the buyer about the front air
bag system and guide the buyer to the
appropriate sections in this Owner’s
Manual.
Front and rear outboard
seat-mounted side-impact
supplemental air bag and
roof-mounted curtain side-
impact and rollover supplemental
air bag systems
The side air bags are located in the outside
of the seatback of the front and rear out-
board seats. The curtain air bags are lo-
cated in the side roof rails. All of the infor-
mation, cautions and warnings in this
manual must be followed. The side air
bags and curtain air bags are designed
to inflate in higher severity side collisions,

∙ If there is an impact to your vehiclefrom any direction, your Occupant
Classification Sensor (OCS) should be
checked to verif y it is still functioning
correctly. It is recommended that you
visit a NISSAN dealer for this service.
The OCS should be checked even if
no air bags deploy as a result of the
impact. Failure to verif y proper OCS
function may result in an improper air
bag deployment resulting in injury or
death.
1-68Safety—Seats, seat belts and supplemental restraint system

Be sure you do not put anything on top
of the autolight sensor located in the top
side
1of the instrument panel. The au-
tolight sensor controls the autolight; if it
is covered, the autolight sensor reacts as
if it is dark out and the headlights will
illuminate. If this occurs while parked
with the engine off and the ignition
switch placed in the ON position, your
vehicle’s battery could become dis-
charged.
Headlight beam select
1To select the high beam function, push
the lever forward. The high beam lights
come on and the

AUTOMATIC ANTI-GLARE
REARVIEW MIRROR (if so equipped)
The inside mirror is designed so that it
automatically dims during night time con-
ditions and according to the intensity of the
headlights of the vehicle following you. The
automatic anti-glare feature is activated
when the ignition switch is in the ON posi-
tion.NOTE:
Do not hang any objects over the sen-
sors
1or apply glass cleaner to the sen-
sors. Doing so will reduce the sensitivity
of the sensors, resulting in improper op-
eration.
The indicator light
2will illuminate when
the automatic anti-glare feature is operat-
ing.
∙ To turn off the anti-glare feature, press the O button. The indicator light will
turn off.
∙ To turn on the anti-glare feature, press the | button. The indicator light will turn
on.
For information on HomeLink® Universal
Transceiver operation, refer to the
“HomeLink® Universal Transceiver” in the
“Instruments and controls” section of this
manual.
OUTSIDE MIRRORS

∙ If the low tire pressure warning lightilluminates while driving, avoid sud-
den steering maneuvers or abrupt
braking, reduce vehicle speed, pull off
the road to a safe location and stop
the vehicle as soon as possible. Driv-
ing with underinflated tires may per-
manently damage the tires and in-
crease the likelihood of tire failure.
Serious vehicle damage could occur
and may lead to an accident and could
result in serious personal injury.
Check the tire pressure for all four
tires. Adjust the tire pressure to the
recommended COLD tire pressure
shown on the Tire and Loading Infor-
mation label to turn the low tire pres-
sure warning light off. If you have a flat
tire, replace it with a spare tire as soon
as possible. (For additional informa-
tion, refer to “Flat tire” in the “In case of
emergency ” section for changing a
flat tire.) ∙ When replacing a wheel without the
TPMS such as the spare tire, when a
spare tire is mounted or a wheel is
replaced, tire pressure will not be indi-
cated, the TPMS will not function and
the low tire pressure warning light will
flash for approximately 1 minute. The
light will remain on af ter 1 minute. It is
recommended that you visit a NISSAN
dealer for tire replacement and/or
system resetting.
∙ Replacing tires with those not origi- nally specified by NISSAN could affect
the proper operation of the TPMS.
∙ Do not inject any tire liquid or aerosol tire sealant into the tires, as this may
cause a malfunction of the tire pres-
sure sensors.

WARNING
Failure to follow the warnings and in-
structions for proper use of the BSW
system could result in serious injury or
death.
∙ The BSW system is not a replacementfor proper driving procedures and is
not designed to prevent contact with
vehicles or objects. When changing
lanes, always use the side and rear
mirrors and turn and look in the direc-
tion your vehicle will move to ensure it
is safe to change lanes. Never rely
solely on the BSW system.
The BSW system helps alert the driver of
other vehicles in adjacent lanes when
changing lanes. The BSW system uses radar sensors
1
installed near the rear bumper to detect
other vehicles in an adjacent lane.
The radar sensors can detect vehicles on
either side of your vehicle within the detec-
tion zone shown as illustrated. This detec-
tion zone starts from the outside mirror of
your vehicle and extends approximately
10 f t (3.0 m) behind the rear bumper, and
approximately 10 f t (3.0 m) sideways.