2018 NISSAN SENTRA service

∙ Do not make unauthorized changesto your vehicle’s electrical system,
suspension system or side panel. This
could affect proper operation of the
side air bag and curtain air bag
systems.
∙ Tampering with the side air bag sys- tem may result in serious personal in-
jury. For example, do not change the
front seats by placing material near
the seatbacks or by installing addi-
tional trim material, such as seat cov-
ers, around the side air bag.
∙ It is recommended that you visit a NISSAN dealer for work on and around
the side air bag and curtain air bag
systems. It is also recommended that
you visit a NISSAN dealer for installa-
tion of electrical equipment. The SRS
wiring harnesses* should not be
modified or disconnected. Unauthor-
ized electrical test equipment and
probing devices should not be used
on the side air bag or curtain air bag
systems.
*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 side air bag
and curtain air bag systems and guide the
buyer to the appropriate sections in this
Owner’s Manual.
Seat belt with pretensioner(s)
(front seats)
WARNING
∙ The pretensioner(s) cannot be reused
af ter activation. They must be re-
placed together with the retractor
and buckle as a unit.
∙ If the vehicle becomes involved in a collision but pretensioner(s) are not
activated, be sure to have the preten-
sioner system checked and, if neces-
sary, replaced. It is recommended that
you visit a NISSAN dealer for this
service.
∙ No unauthorized changes should be made to any components or wiring of
the pretensioner system. This is to
prevent damage to or accidental acti-
vation of the pretensioner(s). Tamper-
ing with the pretensioner system may
result in serious personal injury. ∙ It is recommended that you visit a
NISSAN dealer for work on and around
the pretensioner system. It is also rec-
ommended that you visit a NISSAN
dealer for installation of electrical
equipment. Unauthorized electrical
test equipment and probing devices
should not be used on the preten-
sioner system.
∙ If you need to dispose of the preten- sioner(s) or scrap the vehicle, it is rec-
ommended that you visit a NISSAN
dealer for this service. Incorrect dis-
posal procedures could cause per-
sonal injury.
The pretensioner system may activate
with the supplemental air bag system in
certain types of collisions. Working with the
seat belt retractor, the pretensioner(s) help
tighten the seat belt when the vehicle be-
comes involved in certain types of colli-
sions, helping to restrain front seat occu-
pants.
The pretensioner(s) are encased within the
seat belt retractor and to the seat belt an-
chor affixed to the floor of the vehicle.
These seat belts are used the same way as
conventional seat belts.
Safety—Seats, seat belts and supplemental restraint system1-61

SUPPLEMENTAL AIR BAG WARNING
LIGHT
The supplemental air bag warning light,
displaying
in the instrument panel,
monitors the circuits for the air bag sys-
tems, pretensioner(s) and all related wiring.
When the ignition switch is placed in the ON
position, the supplemental air bag warning
light illuminates for about 7 seconds and
then turns off. This means the system is
operational. If any of the following conditions occur, the
front air bag, side air bag, curtain air bag
and pretensioner systems need servicing:
∙ The supplemental air bag warning light remains on af ter approximately 7 sec-
onds.
∙ The supplemental air bag warning light flashes intermittently.
∙ The supplemental air bag warning light does not come on at all.
Under these conditions, the front air bag,
side air bag, curtain air bag or pretensioner
systems may not operate properly. They
must be checked and repaired. It is recom-
mended that you visit a NISSAN dealer for
this service.WARNING
If the supplemental air bag warning
light is on, it could mean that the front
air bag, side air bag, curtain air bag
and/or pretensioner systems will not
operate in an accident. To help avoid
injury to yourself or others, have your
vehicle checked as soon as possible. It is
recommended that you visit a NISSAN
dealer for this service. NOTE:
In the event of a crash involving an air
bag deployment (side, front or both), the
vehicle’s hazard lamps (turn indicators)
will turn ON automatically.
Repair and replacement
procedure
The front air bags, side air bags, curtain air
bags and pretensioner(s) are designed to
inflate on a one-time-only basis. As a re-
minder, unless it is damaged, the supple-
mental air bag warning light remains illu-
minated af ter inflation has occurred. These
systems should be repaired and/or re-
placed as soon as possible. It is recom-
mended that you visit a NISSAN dealer for
this service.
When maintenance work is required on the
vehicle, the front air bags, side air bags,
curtain air bags, pretensioner(s) and re-
lated parts should be pointed out to the
person performing the maintenance. The
ignition switch should always be placed in
the LOCK position when working under the
hood or inside the vehicle.
LRS0100
Safety—Seats, seat belts and supplemental restraint system1-63

WARNING
∙ Once a front air bag, side air bag, orcurtain air bag has inflated, the air
bag module will not function again
and must be replaced. Additionally,
the activated pretensioner(s) must
also be replaced. The air bag module
and pretensioner(s) should be re-
placed. It is recommended that you
visit a NISSAN dealer for this service.
However, the air bag module and pre-
tensioner(s) cannot be repaired.
∙ The front air bag, side air bag, curtain air bag systems and the pretensioner
system should be inspected if there is
any damage to the front end or side
portion of the vehicle. It is recom-
mended that you visit a NISSAN dealer
for this service.
∙ If you need to dispose of the supple- mental air bag or pretensioner sys-
tems or scrap the vehicle, it is recom-
mended that you visit a NISSAN
dealer. Incorrect disposal procedures
could cause personal injury. ∙ If there is an impact to your vehicle
from 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 im-
pact. Failure to verif y proper OCS
function may result in an improper air
bag deployment resulting in injury or
death.
1-64Safety—Seats, seat belts and supplemental restraint system

The low fuel warning light comes on when
the amount of fuel in the tank is getting low.
Refill the fuel tank before the gauge reg-
isters 0 (Empty).
The arrow on the fuel pump symbol
indicates the fuel-filler location.
CAUTION
∙ If the vehicle runs out of fuel, theMalfunction Indicator Light (MIL) may
come on. Refuel as soon as possible.
Af ter a few driving trips. the
light
should turn off. If the light remains on
af ter a few driving trips, have the ve-
hicle inspected. It is recommended
that you visit a NISSAN dealer for this
service.
∙ For additional information, refer to “Malfunction Indicator Light (MIL)” in
this section.
TRIP COMPUTER (if so equipped)
When the ignition switch is placed in the ON
position, the modes of the trip computer
can be selected by pressing the
but-
ton on the steering wheel. The following
modes can be selected:
∙ Trip A
∙ Trip B
∙ ECO Pedal Indicator (if so equipped)
∙ Instant fuel economy
∙ Average fuel economy
∙ Average speed ∙ Distance to empty
∙ Trip computer reset
Type B (if so equipped)
LIC2222
Instruments and controls2-9

CHECKING LIGHTS
With all doors closed, apply the parking
brake, fasten the seat belts and place the
ignition switch in the ON position without
starting the engine. The following lights (if
so equipped) will come on:
,or,,or
The following lights (if so equipped) will
come on briefly and then go off:
or,,,,,
SPORT ,
If any light does not come on or operate in
a way other than described, it may indicate
a burned-out bulb and/or a system mal-
function. Have the system checked. It is
recommended that you visit a NISSAN
dealer for this service.
Some indicators and warnings are also dis-
played on the vehicle information display
between the speedometer and tachom-
eter. For additional information, refer to “Ve-
hicle information display” in this section.
WARNING LIGHTS
For additional information on warnings
and indicators, refer to “Vehicle information
display” in this section.
orAnti-lock Braking
System (ABS)
warning light
When the ignition switch is placed in the ON
position, the ABS warning light illuminates
and then turns off. This indicates the ABS is
operational.
If the ABS warning light illuminates while
the engine is running or while driving, it
may indicate the ABS is not functioning
properly. Have the system checked. It is
recommended that you visit a NISSAN
dealer for this service.
If an ABS malfunction occurs, the anti-lock
function is turned off. The brake system
then operates normally but without anti-
lock assistance. For additional information,
refer to “Brake system” in the “Starting and
driving” section of this manual.
Automatic EmergencyBraking (AEB) system
warning light (if so
equipped)
This light comes on when the ignition
switch is placed in the ON position. It turns
off af ter the engine is started.
This light illuminates when the AEB system
is set to OFF on the vehicle information
display.
If the light illuminates when the AEB sys-
tem is on, it may indicate that the system is
unavailable. For additional information, re-
fer to “Automatic Emergency Braking (AEB)”
in the “Starting and driving” section of this
manual.
orBrake warning
light
This light functions for both the parking
brake and the foot brake systems.
Parking brake indicator
When the ignition switch is placed in the ON
position, the light comes on when the park-
ing brake is applied.
2-14Instruments and controls

Low brake fluid warning light
When the ignition switch is placed in the ON
position, the light warns of a low brake fluid
level. If the light comes on while the engine
is running, with the parking brake not ap-
plied, stop the vehicle and perform the fol-
lowing:1. Check the brake fluid level. Add brake fluid as necessary. For additional infor-
mation, refer to “Brake fluid” in the “Do-
it-yourself ” section of this manual.
2. If the brake fluid level is correct, have the warning system checked. It is rec-
ommended that you visit a NISSAN
dealer for this service.
WARNING
∙ Your brake system may not be work-ing properly if the warning light is on.
Driving could be dangerous. If you
judge it to be safe, drive carefully to
the nearest service station for repairs.
Otherwise, have your vehicle towed
because driving it could be
dangerous. ∙ Pressing the brake pedal with the en-
gine stopped and/or a low brake fluid
level may increase your stopping dis-
tance and braking will require greater
pedal effort as well as pedal travel.
∙ If the brake fluid level is below the MINIMUM or MIN mark on the brake
fluid reservoir, do not drive until the
brake system has been checked. It is
recommended that you visit a NISSAN
dealer for this service.
Anti-lock Braking System (ABS) warning
indicator
When the parking brake is released and the
brake fluid level is sufficient, if both the
brake warning light and the ABS warning
light illuminate, it may indicate the ABS is
not functioning properly. Have the brake
system checked and, if necessary, repaired.
It is recommended that you visit a NISSAN
dealer for this service. Avoid high-speed
driving and abrupt braking. For additional
information, refer to “Anti-lock Braking Sys-
tem (ABS) warning light” in this section.
Charge warning light
If this light comes on while the engine is
running, it may indicate the charging sys- tem is not functioning properly. Turn the
engine off and check the generator belt. If
the belt is loose, broken, missing, or if the
light remains on, have your vehicle serviced
immediately. It is recommended that you
visit a NISSAN dealer for this service.
CAUTION
Do not continue driving if the generator
belt is loose, broken or missing.
Door open warning light (if
so equipped)
This light comes on when any of the doors
are not closed securely while the ignition
switch is in the ON position.
Engine oil pressurewarning light (if so
equipped)
This light warns of low engine oil pressure. If
the light flickers or comes on during nor-
mal driving, pull off the road in a safe area,
stop the engine immediatelyand call a
NISSAN dealer or other authorized repair
shop.
The engine oil pressure warning light is
not designed to indicate a low oil level.
Use the dipstick to check the oil level. For
Instruments and controls2-15

system checked. It is recommended that
you visit a NISSAN dealer for this service.
The "CHECK TIRE PRES" warning message
”/”Tire Pressure Low— Add Air” warning
does not appear if the low tire pressure
warning light illuminates to indicate a
TPMS malfunction.
For additional information, refer to “Tire
Pressure Monitoring System (TPMS)” in the
“Starting and driving” section and “Tire
pressure” in the “Do-it-yourself ” section of
this manual.
WARNING
∙ Radio waves could adversely affectelectric medical equipment. Those
who use a pacemaker should contact
the electric medical equipment
manufacturer for the possible influ-
ences before use.
∙ If the light does not illuminate with the ignition switch placed in the ON
position, have the vehicle checked as
soon as possible. It is recommended
that you visit a NISSAN dealer for this
service. ∙ If the light illuminates while driving,
avoid sudden steering maneuvers or
abrupt braking, reduce vehicle speed,
pull off the road to a safe location and
stop the vehicle as soon as possible.
Driving with under-inflated tires may
permanently damage the tires and in-
crease the likelihood of tire failure. Se-
rious vehicle damage could occur and
may lead to an accident and could re-
sult in serious personal injury or
death. Check the tire pressure for all
four tires. Adjust the tire pressure to
the recommended COLD tire pressure
show on the Tire and Loading Infor-
mation label located in the driver’s
door opening to turn the low tire pres-
sure warning light off. If the light still
illuminates while driving af ter adjust-
ing the tire pressure, a tire may be flat
or the TPMS may be malfunctioning. If
you have a flat tire, replace it with a
spare tire as soon as possible. If no tire
is flat and all tires are properly in-
flated, have the vehicle checked. It is
recommended that you visit a NISSAN
dealer for this service. ∙ When replacing a wheel without the
TPMS such as the spare tire, the TPMS
will not function and the low tire pres-
sure warning light will flash for ap-
proximately 1 minute. The light will re-
main on af ter 1 minute. Have your
tires replaced and/or TPMS system
reset as soon as possible. It is recom-
mended that you visit a NISSAN dealer
for these services.
∙ Replacing tires with those not origi- nally specified by NISSAN could affect
the proper operation of the TPMS.CAUTION
∙ The TPMS is not a substitute for theregular tire pressure check. Be sure to
check the tire pressure regularly.
∙ If the vehicle is being driven at speeds of less than 16 mph (25 km/h), the
TPMS may not operate correctly.
∙ Be sure to install the specified size of tires to the four wheels correctly.
Instruments and controls2-17

Low windshield-washerfluid warning light (if so
equipped)
This light comes on when the windshield-
washer fluid is at a low level. Add
windshield-washer fluid as necessary. For
additional information, refer to “Windshield-
washer fluid” in the “Do-it-yourself ” section
of this manual.
Master warning light (if soequipped)
When the ignition switch is in the ON posi-
tion, the master warning light illuminates if
any of the following are displayed on the
vehicle information display:
∙ No key warning
∙ Low washer fluid warning
∙ Parking brake release warning
∙ Door open warning
∙ Loose fuel cap warning
∙ Check tire pressure warning
∙ Emergency brake warning
∙ Lock warning
∙ I-Key system warning ∙ Headlight system warning
∙ ITS warning
∙ Shipping mode warning
∙ Low oil pressure warning
For additional information, refer to “Vehicle
information display” in this section.
orPower steering warning light
WARNING
∙ If the engine is not running or is turned off while driving, the power as-
sist for the steering will not work.
Steering will be harder to operate.
∙ When the power steering warning light illuminates with the engine run-
ning, there will be no power assist for
the steering. You will still have control
of the vehicle but the steering will be
harder to operate. Have the power
steering system checked. It is recom-
mended that you visit a NISSAN dealer
for this service. When the ignition switch is placed in the ON
position, the power steering warning light
illuminates. Af ter starting the engine, the
power steering warning light turns off. This
indicates the power steering system is op-
erational.
If the power steering warning light illumi-
nates while the engine is running, it may
indicate the power steering system is not
functioning properly and may need servic-
ing. Have the power steering system
checked. It is recommended that you visit a
NISSAN dealer for this service.
When the power steering warning light illu-
minates with the engine running, there will
be no power assist for the steering but you
will still have control of the vehicle. At this
time, greater steering effort is required to
operate the steering wheel, especially in
sharp turns and at low speeds.
For additional information, refer to “Power
steering” in the “Starting and driving” sec-
tion of this manual.
Seat belt warning light and
chime
The light and chime remind you to fasten
your seat belts. The light illuminates when-
ever the ignition switch is placed in the ON
or START position and remains illuminated
2-18Instruments and controls