2018 NISSAN SENTRA ECU

3. Replace the battery with a new one.Recommended battery: CR2025 or
equivalent.
∙ Do not touch the internal circuit andelectric terminals as doing so could
cause a malfunction.
∙ Hold the battery by the edges. Hold- ing the battery across the contact
points will seriously deplete the stor-
age capacity.
∙ Make sure that the + side faces the bottom of the lower part.
4. Close the lid securely as illustrated with
CandD.
5. Operate the buttons to check the op- eration.
If you need assistance with replacement, it
is recommended that you visit a NISSAN
dealer for this service. FCC Notice:
For USA:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device
may not cause harmful interference, and
(2) this device must accept any interfer-
ence received, including interference
that may cause undesired operation.
Note:
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user’s author-
ity to operate the equipment.
For Canada:
This device complies with Industry
Canada licence-exempt RSS standard(s).
Operation is subject to the following two
conditions: (1) this device may not cause
interference, and (2) this device must ac-
cept any interference, including interfer-
ence that may cause undesired opera-
tion of the device.
LDI2637
8-28Do-it-yourself

are designed to meet the minimum clear-
ances between the tire and the closest ve-
hicle suspension or body component re-
quired to accommodate the use of a
winter traction device (tire chains or
cables). The minimum clearances are de-
termined using the factory equipped tires.
Other types may damage your vehicle. Use
chain tensioners when recommended by
the tire chain manufacturer to ensure a
tight fit. Loose end links of the tire chain
must be secured or removed to prevent
the possibility of whipping action damage
to the fenders or underbody. If possible,
avoid fully loading your vehicle when using
tire chains. In addition, drive at a reduced
speed. Otherwise, your vehicle may be
damaged and/or vehicle handling and
performance may be adversely affected.
Tire chains must be installed only on the
front wheels and not on the rear wheels.
Never install tire chains on a TEMPORARY
USE ONLY spare tire.
Do not use tire chains on dry roads. Driving
with chains in such conditions can cause
damage to the various mechanisms of the
vehicle due to some overstress.
CHANGING WHEELS AND TIRES
Tire rotation
NISSAN recommends rotating the
tires every 5,000 miles (8,000 km).
For additional information on tire re-
placing procedures, refer to “Flat tire”
in the “In case of emergency” section
of this manual.
As soon as possible, tighten the
wheel nuts to the specified torque
with a torque wrench.Wheel nut tightening torque:
83 f t-lb (113 N·m)
The wheel nuts must be kept tight-
ened to specifications at all times.
It is recommended that wheel nuts
be tightened to specification at
each tire rotation interval.
WARNING
∙ Af ter rotating the tires, check and adjust the tire pressure.
∙ Retighten the wheel nuts when the vehicle has been driven for
600 miles (1,000 km) (also in
cases of a flat tire, etc.).
∙ Do not include the spare tire in the tire rotation.
∙ For additional information re- garding tires, refer to “Impor-
tant Tire Safety Information”
(US) or “Tire Safety Information”
(Canada) in the Warranty Infor-
mation Booklet.
WDI0258
Do-it-yourself8-43

Doors and engine hood:Check that the
doors and engine hood operate properly.
Also ensure that all latches lock securely.
Lubricate hinges, latches, latch pins, rollers
and links if necessary. Make sure that the
secondary latch keeps the hood from
opening when the primary latch is re-
leased.
When driving in areas using road salt or
other corrosive materials, check lubrica-
tion frequently.
Lights*: Clean the headlights on a regular
basis. Make sure that the headlights, stop
lights, tail lights, turn signal lights, and other
lights are all operating properly and in-
stalled securely. Also check headlight aim.
Road wheel nuts (lug nuts)*: When check-
ing the tires, make sure no wheel nuts are
missing, and check for any loose wheel
nuts. Tighten if necessary.
Tire rotation*: Tires should be rotated ev-
ery 5,000 miles (8,000 km).
Tires*: Check the pressure with a gauge
of ten and always prior to long distance
trips. If necessary, adjust the pressure in all
tires, including the spare, to the pressure
specified. Check carefully for damage, cuts
or excessive wear. Tire Pressure Monitoring System (TPMS)
transmitter components:
Replace the
TPMS transmitter grommet seal, valve core
and cap when the tires are replaced due to
wear or age.
Wheel alignment and balance: If the ve-
hicle should pull to either side while driving
on a straight and level road, or if you detect
uneven or abnormal tire wear, there may
be a need for wheel alignment. If the steer-
ing wheel or seat vibrates at normal high-
way speeds, wheel balancing may be
needed.
For additional information regarding tires,
refer to “Important Tire Safety Information”
(US) or “Tire Safety Information” (Canada) in
the Warranty Information Booklet.
Windshield: Clean the windshield on a
regular basis. Check the windshield at least
every six months for cracks or other dam-
age. Have a damaged windshield repaired
by a qualified repair facility.
Windshield wiper blades*: Check for
cracks or wear if they do not wipe properly.Inside the vehicle
The maintenance items listed here should
be checked on a regular basis, such as
when performing scheduled maintenance,
cleaning the vehicle, etc.
Accelerator pedal: Check the pedal for
smooth operation and make sure the
pedal does not catch or require uneven
effort. Keep the floor mat away from the
pedal.
Brake pedal: Check the pedal for smooth
operation. If the brake pedal suddenly goes
down further than normal, the pedal feels
spongy or the vehicle seems to take longer
to stop, have your vehicle checked imme-
diately. It is recommended that you visit a
NISSAN dealer for this service. Keep the
floor mat away from the pedal.
Brakes: Check that the brakes do not pull
the vehicle to one side when applied.
Continuously Variable Transmission
(CVT) P (Park) position mechanism (if so
equipped): On a fairly steep hill check that
the vehicle is held securely with the shif t
lever in the P (Park) position without apply-
ing any brakes.
Maintenance and schedules9-3

Parking brake:Check the parking brake
operation regularly. The vehicle should be
securely held on a fairly steep hill with only
the parking brake applied. If the parking
brake needs adjustment, it is recom-
mended that you visit a NISSAN dealer for
this service.
Seats: Check seat position controls such
as seat adjusters, seatback recliner, etc., to
ensure they operate smoothly and all
latches lock securely in every position.
Check that the head restraints/headrests
move up and down smoothly and the locks
(if so equipped) hold securely in all latched
positions.
Seat belts: Check that all parts of the seat
belt system (for example, buckles, anchors,
adjusters and retractors) operate properly
and smoothly, and are installed securely.
Check the belt webbing for cuts, fraying,
wear or damage.
Steering wheel: Check for changes in the
steering system, such as excessive free
play, hard steering or strange noises.
Warning lights and chimes: Make sure all
warning lights and chimes are operating
properly. Windshield defroster:
Check that the air
comes out of the defroster outlets properly
and in sufficient quantity when operating
the heater or air conditioner.
Windshield wiper and washer*: Check
that the wipers and washer operate prop-
erly and that the wipers do not streak.
Under the hood and vehicle
The maintenance items listed here should
be checked periodically (for example, each
time you check the engine oil or refuel).
Battery* (for serviceable batteries):
Check the fluid level in each cell. The fluid
should be at the bottom of the filler open-
ing. Vehicles operated in high tempera-
tures or under severe conditions require
frequent checks of the battery fluid level.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery dis-
charge and potential no-start conditions
such as:
1. Installation or extended use of elec-
tronic accessories that consume bat-
tery power when the engine is not
running (Phone chargers, GPS, DVD
players, etc.). 2.
Vehicle is not driven regularly and/or
only driven short distances.
In these cases, the battery may need to
be charged to maintain battery health.
Brake and clutch (if so equipped) fluid
level*: Make sure that the brake and clutch
fluid levels are between the MIN and MAX
lines on the reservoir.
Engine coolant level*: Check the coolant
level when the engine is cold.
Engine drive belt*: Make sure the drive belt
is not frayed, worn, cracked or oily.
Engine oil level*: Check the level af ter
parking the vehicle on a level surface with
the engine off. Wait more than 15 minutes
for the oil to drain back into the oil pan.
Exhaust system: Make sure there are no
loose supports, cracks or holes. If the
sound of the exhaust seems unusual or
there is a smell of exhaust fumes, immedi-
ately have the exhaust system inspected. It
is recommended that you visit a NISSAN
dealer for this service. For additional infor-
mation, refer to “Exhaust gas (carbon mon-
oxide)” in the “Starting and driving” section
of this manual.
9-4Maintenance and schedules

5. Determine the combined weightof luggage and cargo being
loaded on the vehicle. That
weight may not safely exceed
the available cargo and luggage
load capacity calculated in
step 4.
Before driving a loaded vehicle, con-
firm that you do not exceed the
Gross Vehicle Weight Rating (GVWR)
or the Gross Axle Weight Rating
(GAWR) for your vehicle. For addi-
tional information, refer to “Measure-
ment of weights” in this section.
Also check tires for proper inflation
pressures. For additional informa-
tion, refer to “Tire and Loading Infor-
mation label” in this section.
LOADING TIPS
∙ The GVW must not exceed GVWR or GAWR as specified on the
F.M.V.S.S./C.M.V.S.S. certification
label. ∙ Do not load the front and rear
axle to the GAWR. Doing so will
exceed the GVWR.
WARNING
∙ 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.
∙ Do not load your vehicle any heavier than the GVWR or the
maximum front and rear
GAWRs. If you do, parts of your
vehicle can break, tire damage
could occur, or it can change the
way your vehicle handles. This
could result in loss of control
and cause personal injury. ∙ Overloading not only can
shorten the life of your vehicle
and the tire, but can also cause
unsafe vehicle handling and
longer braking distances. This
may cause a premature tire fail-
ure which could result in a seri-
ous accident and personal in-
jury. Failures caused by
overloading are not covered by
the vehicle’s warranty.
MEASUREMENT OF WEIGHTS
Secure loose items to prevent
weight shif ts that could affect the
balance of your vehicle. When the ve-
hicle is loaded, drive to a scale and
weigh the front and the rear wheels
separately to determine axle loads.
Individual axle loads should not ex-
ceed either of the gross axle weight
ratings (GAWR). The total of the axle
loads should not exceed the gross
vehicle weight rating (GVWR). These
ratings are given on the vehicle cer-
tification label. If weight ratings are
exceeded, move or remove items to
bring all weights below the ratings.
Technical and consumer information10-17

For USA
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you
should immediately inform the Na-
tional Highway Traffic Safety Admin-
istration (NHTSA) in addition to noti-
f ying NISSAN.
If NHTSA receives similar complaints,
it may open an investigation, and if it
finds that a safety defect exists in a
group of vehicles, it may order a re-
call and remedy campaign. However,
NHTSA cannot become involved in
individual problems between you,
your dealer, or NISSAN.
To contact NHTSA, you may call the
Vehicle Safety Hotline toll-free at
1-888-327-4236 (TTY: 1-800-424-9153);
go to http://www.safercar.gov; or
write to: Administrator, NHTSA, 400
Seventh Street, SW., Washington, D.C.
20590. You can also obtain other in-
formation about motor vehicle safety
from http://www.safercar.gov.
You may notif y NISSAN by contact-
ing our Consumer Affairs Depart-
ment, toll-free, at 1-800-NISSAN-1.
For Canada
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you
should immediately inform Trans-
port Canada in addition to notif ying
NISSAN.
If Transport Canada receives com-
plaints, it may open an investigation,
and if it finds that a safety defect
exists in a group of vehicles, it may
request that NISSAN conduct a recall
campaign. However, Transport
Canada cannot become involved in
individual problems between you,
your dealer, or NISSAN.
You may contact Transport Canada’s
Defect Investigations and Recalls Divi-
sion toll free at 1-800-333-0510. You
may also report safety defects online
at: https://wwwapps.tc.gc.ca/Saf-
Sec-Sur/7/PCDB-BDPP/fc-cp.aspx?lang=eng (English speakers)
or https://wwwapps.tc.gc.ca/Saf-
Sec-Sur/7/PCDB-BDPP/fc-
cp.aspx?lang=fra (French speakers)
Additional information concerning
motor vehicle safety may be obtained
from Transport Canada’s Road Safety
Information Centre at 1-800-333-0371
or online at www.tc.gc.ca/roadsafety
(English speakers) or
www.tc.gc.ca/securiteroutiere
(French speakers).
To notif y NISSAN of any safety con-
cerns please contact our Consumer
Information Centre toll free at 1-800-
387-0122.
REPORTING SAFETY DEFECTS
10-20Technical and consumer information

11 Index
A
Air bag (See supplemental restraint
system) .................... .1-44
Air bag system Front (See supplemental front impact air
bagsystem)................1-51
Side and curtain (See supplemental side
air bag and curtain side-impact
airbagsystem)..............1-59
Air bag warning labels ............1-62
Airbagwarninglight..........1-63, 2-19
Air bag warning light,
supplemental ..............1-63, 2-19
Air cleaner ...................8-18
Air cleaner housing filter ..........8-18
Air conditioner Air conditioner operation ....4-26,4-32
Air conditioner service ..........4-34
Air conditioner specification label . .10-13
Air conditioner system refrigerant and oil
recommendations ............10-8
Air conditioner system refrigerant
recommendations ............10-8
Heater and air conditioner (automatic)
(if so equipped) ..............4-31
Heater and air conditioner
controls...............4-24,4-32
Heater and air conditioner
(manual) ..................4-23
Servicing air conditioner ........4-34
Air flow charts .............4-20,4-27 Alarm system
(See vehicle security system)
.......2-36
Anchor point locations ...........1-28
Antenna ....................4-73
Antifreeze ...................5-77
Anti-lock brake warning light ........2-14
Anti-lock Braking System (ABS) ......5-73
Apps .......................4-74
APPS button ...................4-7
Armrests.................... .1-7
Audible reminders ..............2-22
Audiosystem.................4-34 AMradioreception............4-35
Bluetooth® audio .........4-69,4-70
Bluetooth® streaming audio ......4-70
Compact disc (CD)
player.............4-46,4-51,4-58
FM/AM radio with compact disc (CD)
player....................4-43
FM/AM/SAT radio with compact disc (CD)
player ................4-48,4-53
FMradioreception............4-35
iPod®Player.............4-63,4-66
iPod® player operation ......4-63,4-66
Radio ....................4-34
Steering wheel audio control
switch....................4-72
USBinterface............4-59,4-61
USB (Universal Serial Bus) Connection
Port..................4-59,4-61
Autolightswitch ...............2-42
Automatic Automatic power window switch . . .2-58 Automatic anti-glare inside mirror
....3-32
Automatic door locks .............3-7
Automatic Emergency Braking
(AEB) ...................2-14,5-62
AUXjack....................4-59
B
Back button ...................4-7
Battery..................5-77,8-14 Charge warning light ...........2-15
Battery replacement ............8-25
Keyfob................8-25,8-26
NISSAN Intelligent Key® .........8-27
Before starting the engine .........5-14
Belt(Seedrivebelt)..............8-16
Blind Spot Warning (BSW) ..........5-27
Bluetooth® audio ...........4-69,4-70
Bluetooth® hands-free phone
system .....................4-79
Bluetooth® Hands-Free Phone System with
N
avigationSystem..............4-91
Bluetooth® streaming audio with
NavigationSystem..............4-70
Bluetooth® streaming audio without
Navigation System (if so equipped) . . .4-69
Booster seats .................1-41
Brake Anti-lock Braking System (ABS) ....5-73
Brakefluid.................8-12
Brakelight(Seestoplight).......8-33
Brakesystem...............5-72

Passenger air bag and status light. . .1-54
Security indicator light..........2-21
Spotlights(Seemaplight)........2-61
Trunklight..................2-63
Warning/indicator lights and audible
reminders ...............2-19,3-21
Lights......................8-29 Maplights..................2-61
Lock Child safety rear door lock ........3-7
Door locks ..................3-5
Fuel-filler door lock opener lever ....3-27
Power door locks ..............3-6
Trunk lid lock opener lever ........3-26
Loose fuel cap warning .........2-6,2-33
Lowfuelwarninglight......2-16,2-18,2-33
Low tire pressure warning light .......2-16
Low windshield-washer fluid warning
light ....................2-18,2-34
Luggage
(See vehicle loading information) .....10-14
M
Maintenance General maintenance ...........9-2
Insidethevehicle..............9-3
Maintenance precautions .........8-2
Outsidethevehicle.............9-2
Seat belt maintenance ..........1-20
Under the hood and vehicle .......9-4
Maintenance log ................9-14
Maintenance requirements ..........9-2
Maintenance schedules ............9-7Maintenance under severe operation
conditions....................9-13
Malfunctionindicatorlight..........2-20
Manual front seat adjustment
........1-3
Maplights....................2-61
Map pocket ...................2-51
Meters and gauges ...............2-3
Instrument brightness control .....2-45
Mirror Automatic anti-glare inside mirror . . .3-32
Outsidemirrorcontrol..........3-33
Outsidemirrors..............3-33
Rearview...................3-32
Vanitymirror................3-31
Mirrors......................3-32
Mobile apps ...................4-74
Moonroof .................2-59,2-59
N
NissanConnect® ................4-74
NissanConnect® Services ..........4-75
NISSAN Intelligent Key® ..........3-2,3-11
NISSAN Intelligent Key® battery discharge
indicator.....................5-13
NISSAN Vehicle Immobilizer
System ...............2-38,5 -11, 5-14
O
Octane rating (See fuel octane rating) . .10-6
Odometer ....................2-5 Oil
Capacities and recommended
fuel/lubricants...............10-2
Changing engine oil ............8-8
Changing engine oil filter .........8-10
Checking engine oil level .........8-7
Engine oil ...................8-7
Engine oil and oil filter
recommendation .............10-7
Engine oil viscosity .............10-7
One shot call ..............4-83,4-94
Outsidemirrorcontrol............3-33
Outsidemirrors................3-33
Overhead sunglasses holder ........2-54
Overheat Ifyourvehicleoverheats.........6-11
Owner's manual order form ........10-22
Owner's manual/service manual order
information..................10-22
P
Parking Parking/parkingonhills.........5-70
Parkingbrake .................5-25
Phone, Bluetooth® hands-free system . .4-79
Power Power door locks ..............3-6
P

oweroutlet............... .2-49
Powerrearwindows ...........2-57
Power steering system ..........5-71
Powerwindows..............2-56
Rearpowerwindows...........2-57
Poweroutlet................. .2-49
Powersteering.................5-71
11-5