2018 NISSAN FRONTIER check engine light

4WD shif t indicator light
The 4WD shif t indicator light is located in
the odometer display.
The light should turn off within 1 second
af ter placing the ignition switch in the ON
position.
While the engine is running, the 4WD shif t
indicator light will illuminate the position
selected by the 4WD shif t switch.∙
The 4WD shif t indicator light may
blink while shif ting from one drive
mode to the other. When the shif ting
is completed, the 4WD shif t indicator
light will come on.
∙ If the 4WD warning light comes on, the 4WD shif t indicator light goes out.
CAUTION
If the 4WD shif t indicator light indica-
tion changes to 2WD when the 4WD
shif t switch is shif ted to the 4H position
at low ambient temperatures, the 2WD
mode may be being engaged due to
malfunctioning drive system. If the in-
dicator does not return to normal and
the 4WD warning light comes on, have
the system checked. It is recommended
that you visit a NISSAN dealer for this
service.
4WD warning light
Warning light Comes on or
blinks when:
Comes on There is a mal-
function in the 4–wheel drive system
Blinks
slowly The difference
in wheel rota- tion is large
The 4WD warning light is located in the me-
ter.
The 4WD warning light comes on when the
ignition switch is placed in the ON position.
It turns off soon af ter the engine is started.
If any malfunction occurs in the 4WD sys-
tem when the ignition switch is ON, the
warning light will either remain illuminated
or blink.
If the 4WD warning light comes on, the 4WD
shif t indicator light goes out.
LSD0147
Starting and driving5-31

Using the system
Depress the brake pedal and hold it down.
Depress the brake pedal with firm steady
pressure, but do not pump the brakes. The
Anti-lock Braking System will operate to
prevent the wheels from locking up. Steer
the vehicle to avoid obstacles.
WARNING
Do not pump the brake pedal. Doing so
may result in increased stopping
distances.
Self-test feature
The Anti-lock Braking System (ABS) in-
cludes electronic sensors, electric pumps,
hydraulic solenoids and a computer. The
computer has a built-in diagnostic feature
that tests the system each time you start
the engine and move the vehicle at a low
speed in forward or reverse. When the self-
test occurs, you may hear a “clunk” noise
and/or feel a pulsation in the brake pedal.
This is normal and does not indicate a mal-
function. If the computer senses a mal-
function, it switches the ABS off and illumi-
nates the ABS warning light on theinstrument panel. The brake system then
operates normally but without anti-lock
assistance.
If the ABS warning light illuminates during
the self-test or while driving, have the ve-
hicle checked. It is recommended that you
visit a NISSAN dealer for this service.
Normal operation
The Anti-lock Braking System (ABS) oper-
ates at speeds abov
e3-6mph(5-
10 km/h). The speed varies according to
road conditions.
When the ABS senses that one or more
wheels are close to locking up, the actuator
rapidly applies and releases hydraulic pres-
sure. This action is similar to pumping the
brakes very quickly. You may feel a pulsa-
tion in the brake pedal and hear a noise
from under the hood or feel a vibration
from the actuator when it is operating. This
is normal and indicates that the ABS is op-
erating properly. However, the pulsation
may indicate that road conditions are haz-
ardous and extra care is required while
driving. ∙ The ABLS system uses automatic brak-
ing to transfer power from a slipping
drive wheel to the wheel on the same
axle with more traction. The ABLS sys-
tem applies braking to the slipping
wheel, which helps redirect power to
the other wheel.
∙ On 4WD models the ABLS system oper- ates in both 4H and 4LO modes. If 4WD
mode is engaged, the ABLS system op-
erates for both drive axles. On 2WD ve-
hicles, the ABLS system operates on the
drive axle only.
∙ The ABLS system is always ON. In some conditions, the system may automati-
cally turn the ABLS system off. If the sys-
tem is automatically turned off, normal
brake function will continue. ABLS will
function even when the VDC system is
turned OFF.
∙ The ABLS does not operate if both wheels on a drive axle are slipping.
ACTIVE BRAKE LIMITED SLIP (ABLS)
SYSTEM
Starting and driving5-37

∙ The system is designed as an aid tothe driver in detecting large station-
ary objects to help avoid damaging
the vehicle. The system will not detect
small objects below the bumper, and
may not detect objects close to the
bumper or on the ground.
∙ If your vehicle sustains damage to the rear bumper fascia, leaving it mis-
aligned or bent, the sensing zone may
be altered causing inaccurate mea-
surement of obstacles or false alarms.
The RSS sounds a tone to warn the driver of
obstacles near the rear bumper when the
shif t lever is in R (Reverse). The system may
not detect objects at speeds above 3 mph
(5 km/h) and may not detect certain angu-
lar or moving objects.
The RSS detects obstacles up to 5.9 f t
(1.8 m) from the rear bumper with a de-
creased coverage area at the outer cor-
ners of the bumper (refer to the illustration
for approximate zone coverage areas). As
you move closer to the obstacle, the rate of
the tone increases. When the obstacle is
less than 10 in (25.0 cm) away, the tone will
sound continuously. If the RSS detects a
stationary or receding object further than
10 in (25.0 cm) from the side of the vehicle, the tone will sound for only 3 seconds.
Once the system detects an object ap-
proaching, the tone will sound again.
The RSS automatically turns on when the
shif t lever is placed in R (Reverse) and the
ignition is ON. The RSS OFF switch on the
instrument panel allows the driver to turn
the RSS on and off. To turn the RSS off, the
ignition must be ON, and the shif t lever in R
(Reverse). An indicator light on the switch
will illuminate when the system is turned
off. If the indicator light illuminates when
the RSS is not turned off, it may indicate a
malfunction in the RSS.
Keep the RSS sensors (located on the rear
bumper fascia) free from snow, ice and
large accumulations of dirt (do not clean
the sensors with sharp objects). If the sen-
sors are covered, it will affect the accuracy
of the RSS.FREEING A FROZEN DOOR LOCK
To prevent a door lock from freezing, apply
de-icer through the key hole. If the lock
becomes frozen, heat the key before in-
serting it into the key hole or use the re-
mote keyless entry key fob (if so equipped).
ANTIFREEZE
In the winter when it is anticipated that the
temperature will drop below 32°F (0°C),
check the antifreeze to assure proper win-
ter protection. For additional information,
refer to “Engine cooling system” in the “Do-
it-yourself ” section of this manual.
BATTERY
If the battery is not fully charged during
extremely cold weather conditions, the
battery fluid may freeze and damage the
battery. To maintain maximum efficiency,
the battery should be checked regularly.
For additional information, refer to “Battery”
in the “Do-it-yourself ” section of this
manual.
COLD WEATHER DRIVING
Starting and driving5-43

∙ 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 under-inflated 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.
∙ 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.
∙ 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.
CHANGING A FLAT TIRE
If you have a flat tire, follow the instructions
below:
Stopping the vehicle
1. Safely move the vehicle off the road and
away from traffic.
2. Turn on the hazard warning flashers.
3. Park on a level surface and apply the parking brake. Shif t the manual trans-
mission into R (Reverse), or the auto-
matic transmission into P (Park).
4. Turn off the engine.
5. Raise the hood to warn other traffic and to signal professional road assis-
tance personnel that you need assis-
tance. 6. Have all passengers get out of the ve-
hicle and stand in a safe place, away
from traffic and clear of the vehicle.
WARNING
∙ Make sure the parking brake is se-curely applied and the manual trans-
mission is shif ted into R (Reverse), or
the automatic transmission into P
(Park).
∙ Never change tires when the vehicle is on a slope, ice or slippery areas. This is
hazardous.
∙ Never change tires if oncoming traffic is close to your vehicle. Wait for pro-
fessional road assistance.
6-4In case of emergency

8 Do-it-yourself
Maintenance precautions.......................8-2
Engine compartment check locations ...........8-3
Engine cooling system ..........................8-5
Checking engine coolant level ................8-6
Changing engine coolant .....................8-6
Engine oil ........................................8-7
Checking engine oil level .....................8-7
Changing engine oil ..........................8-8
Changing engine oil filter ....................8-10
5-speed Automatic Transmission
(if so equipped) Fluid (ATF) .......................8-11
Power Steering Fluid (PSF) .......................8-11
Brake and clutch (if so equipped) fluid ..........8-12
Brake fluid ................................... 8-12
Clutch (if so equipped) fluid ..................8-12
Windshield-washer fluid ........................8-13
Windshield-washer fluid reservoir ............8-13
Battery......................................... 8-14
Jump starting ............................... 8-15
Variable voltage control system ................8-16
Drive belt ....................................... 8-16
Spark plugs .................................... 8-17Replacing spark plugs
....................... 8-17
Air cleaner ...................................... 8-18
In-cabin microfilter .......................... 8-19
Windshield wiper blades ........................8-20
Cleaning .................................... 8-20
Replacing ................................... 8-20
Brakes.......................................... 8-21
Fuses ........................................... 8-22
Engine compartment .......................8-23
Passenger compartment ....................8-24
Battery replacement ........................... 8-25
Key fob (if so equipped) ......................8-26
Lights .......................................... 8-27
Headlights ................................... 8-27
Fog lights (if so equipped) ...................8-28
Exterior and interior lights ...................8-29
Wheels

and tires ................................ 8-31
Tire pressure ................................ 8-31
Tire labeling ................................. 8-34
Types of tires ................................ 8-37
Tire chains .................................. 8-38
Changing wheels and tires ..................8-39

CHANGING ENGINE OIL FILTER
1. Park the vehicle on a level surface andapply the parking brake.
2. Turn the engine off. 3. Place a large drain pan under the oil
filter.
4. Unscrew
Athe plate covering the oil
filter exposing the filter. (For VQ40DE
engine)
5. Loosen the oil filter
Bwith an oil filter
wrench by turning it counterclockwise.
Then remove the oil filter by turning it
by hand.
CAUTION
Be careful not to burn yourself. The en-
gine oil may be hot. 6. Wipe the engine oil filter sealing surface
with a clean rag.
CAUTION
Be sure to remove any old gasket mate-
rial remaining on the sealing surface of
the engine. Failure to do so could lead to
engine damage.
7. Coat the gasket on the new filter with clean engine oil.
8. Screw on the oil filter until a slight resis- tance is felt, then tighten an additional
2/3 turn.
9. Start the engine and check for leakage around the oil filter. Correct as required.
10. Install the plate covering the oil filter. (For VQ40DE engine)
11. Turn the engine off and wait more than 10 minutes. Check the oil level. Add en-
gine oil if necessary.
VQ40DELDI2834
QR25DE
LDI2865
8-10Do-it-yourself

ENGINE COMPARTMENT
WARNING
Never use a fuse of a higher or lower
amperage rating than that specified on
the fuse box cover. This could damage
the electrical system or electronic con-
trol units or cause a fire.
If any electrical equipment does not come
on, check for an open fuse. 1. Be sure the ignition switch and the headlight switch are OFF.
2. Open the engine hood. 3. Remove the fuse box cover by pushing
the tab and lif ting the cover up.
4. Remove the fuse with the fuse puller. The fuse puller is located in the center
of the fuse block in the passenger
compartment.
5. If the fuse is open
A, replace it with a
new fuse
B.
6. If a new fuse also opens, have the elec- trical system checked and repaired. It is
recommended that you visit a NISSAN
dealer for this service.
Fusible links
If the electrical equipment does not oper-
ate and fuses are in good condition, check
the fusible links. If any of these fusible links
are melted, replace with only Genuine
NISSAN parts.
LDI2838LDI2826
Do-it-yourself8-23

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*: Check the fluid level in each cell.
The fluid should be at the bottom of the
filler opening. Vehicles operated in high
temperatures 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 fluid level*:
Make sure that the brake
fluid level is between the MAX and MIN lines
on the reservoir.
Engine coolant level*: Check the coolant
level when the engine is cold.
Engine drive belts*: Make sure the drive
belts are not frayed, worn, cracked or oily.
Engine oil level*: Check the level af ter
parking the vehicle on a level spot and
turning off the engine. 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.
Fluid leaks: Check under the vehicle for
fuel, oil, water or other fluid leaks af ter the
vehicle has been parked for a while. Water
dripping from the air conditioner af ter use
is normal. If you should notice any leaks or if
9-4Maintenance and schedules