2018 NISSAN FRONTIER check engine

The engine oil pressure warning light is
not designed to indicate a low oil level.
Use the dipstick to check the oil level. For
additional information, refer to “Engine oil”
in the “Do-it-yourself ” section of this
manual.
CAUTION
Running the engine with the engine oil
pressure warning light on could cause
serious damage to the engine almost
immediately. Such damage is not cov-
ered by the NISSAN New Vehicle Limited
Warranty. Turn off the engine as soon as
it is safe to do so.
Low fuel warning light
This light comes on when the fuel level in
the fuel tank is getting low. Refuel as soon
as it is convenient, preferably before the
fuel gauge reaches E (Empty).There will be
a small reserve of fuel in the tank when
the fuel gauge needle reaches E (Empty).
Low tire pressure
warning light
Your vehicle is equipped with a Tire Pres-
sure Monitoring System (TPMS) that moni-
tors the tire pressure of all tires except the
spare.
The low tire pressure warning light warns
of low tire pressure or indicates that the
TPMS is not functioning properly.
Af ter the ignition switch is placed in the ON
position, this light illuminates for about
1 second and turns off.
Low tire pressure warning
If the vehicle is being driven with low tire
pressure, the warning light will illumi-
nate. A CHECK TIRE PRES (pressure)
warning message is also displayed in the
odometer.
When the low tire pressure warning light
illuminates, you should stop and adjust
the tire pressure of all four tires to the
recommended COLD tire pressure shown
on the Tire and Loading Information la-
bel located in the driver’s door opening.
The low tire pressure warning light does
not automatically turn off when the tire
pressure is adjusted. Af ter the tire is inflated to the recom-
mended pressure, the vehicle must be
driven at speeds above 16 mph (25 km/h)
to activate the TPMS and turn off the low
tire pressure warning light. Use a tire
pressure gauge to check the tire pres-
sure.
The low tire pressure warning light remains
illuminated until the tires are inflated to the
recommended COLD tire pressure. The
CHECK TIRE PRES warning message is dis-
played each time the ignition switch is
placed in the ON position as long as the low
tire pressure warning light remains illumi-
nated.
For additional information, refer to “Check
tire pressure warning message” in this sec-
tion and “Tire Pressure Monitoring System
(TPMS)” in the “Starting and driving” section
and in the “In case of emergency” section of
this manual.
TPMS malfunction
If the TPMS is not functioning properly, the
low tire pressure warning light will flash for
approximately 1 minute when the ignition
switch is placed in the ON position. The
light will remain on af ter 1 minute. Have the
system checked. It is recommended that
you visit a NISSAN dealer for this service.
2-18Instruments and controls

4WD shif t indicator light(
model)
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.
Automatic transmissionposition indicator light
(if so equipped)
For additional information, refer to “Driving
the vehicle” in the “Starting and driving” sec-
tion of this manual.
Cruise main switchindicator light
The light comes on when the cruise control
main switch is pushed. The light goes out
when the main switch is pushed again.
When the cruise main switch indicator light
comes on, the cruise control system is op-
erational. For additional information, refer to “Cruise control” in the “Starting and driv-
ing” section of this manual.
Cruise set switch
indicator light
The light comes on while the vehicle speed
is controlled by the cruise control system. If
the light blinks while the engine is running,
it may indicate the cruise control system is
not functioning properly. Have the system
checked. It is recommended that you visit a
NISSAN dealer for this service.
Electronic locking reardifferential (E-Lock) system
ON indicator light
(if so equipped)
This light comes on when the electronic
locking rear differential (E-Lock) system
clutch is fully engaged.
The indicator light flashes when the sys-
tem is first turned on. When the system fully
engages, the light remains on. If the switch
is on and the indicator light continues to
flash, the system is not engaged.
For additional information, refer to “Elec-
tronic locking rear differential (E-Lock) sys-
tem switch” in this section and “Electronic locking rear differential (E-Lock) system” in
the “Starting and driving” section of this
manual.
Front passenger air bag
status light
The front passenger air bag status
light
will be lit and the passenger front
air bag will be off depending on how the
front passenger seat is being used.
For additional information, refer to “Front
passenger air bag and status light” in the
“Safety — Seats, seat belts and supplemen-
tal restraint system” section of this manual.
High beam indicator light
(blue)
This blue light comes on when the head-
light high beams are on and goes out when
the low beams are selected.
The high beam indicator light also comes
on when the passing signal is activated.
Hill descent control systemON indicator light
(if so equipped)
When the ignition switch is placed in the ON
position, this light comes on briefly and
then turns off.
Instruments and controls2-21

The light comes on when the hill descent
control system is activated.
If the hill descent control switch is on and
the indicator light blinks, the system is not
engaged.
If the indicator light does not come on
when the hill descent switch is on, the sys-
tem may not be functioning properly. Have
the system checked. It is recommended
that you visit a NISSAN dealer for this ser-
vice.
For additional information, refer to “Hill de-
scent control switch” in this section and “Hill
descent control system” in the “Starting
and driving” section of this manual.
Malfunction Indicator Light(MIL)
If this indicator light comes on steady or
blinks while the engine is running, it may
indicate a potential emission control mal-
function.
The MIL may also come on steady if the
fuel-filler cap is loose or missing, or if the
vehicle runs out of fuel. Check to make sure
the fuel-filler cap is installed and closed
tightly, and that the vehicle has at least
3 gal (11.4 L) of fuel in the fuel tank. Af ter a few driving trips, the
light
should turn off if no other potential emis-
sion control system malfunction exists.
If this indicator light comes on steady for
20 seconds and then blinks for 10 seconds
when the engine is not running, it indicates
that the vehicle is not ready for an emission
control system inspection/maintenance
test. For additional information, refer to
“Readiness for inspection/maintenance
(I/M) test” in the “Technical and consumer
information” section of this manual.
Operation
The MIL will come on in one of two ways:
∙ MIL on steady — An emission control system malfunction has been de-
tected. Check the fuel-filler cap if the
LOOSE FUEL CAP warning appears in
the trip computer. If the fuel-filler cap is
loose or missing, tighten or install the
cap and continue to drive the vehicle.
The
light should turn off af ter a
few driving trips. If the
light does
not turn off af ter a few driving trips, have
the vehicle inspected. It is recom-
mended that you visit a NISSAN dealer
for this service. You do not need to have
your vehicle towed to the dealer. ∙ MIL blinking — An engine misfire has
been detected which may damage the
emission control system. To reduce or
avoid emission control system dam-
age:
– do not drive at speeds above 45 mph (72 km/h).
– avoid hard acceleration or decelera- tion.
– avoid steep uphill grades.
– if possible, reduce the amount of cargo being hauled or towed.
The MIL may stop blinking and come on
steady. Have the vehicle inspected. It is rec-
ommended that you visit a NISSAN dealer
for this service. You do not need to have
your vehicle towed to the dealer.
CAUTION
Continued vehicle operation without
having the emission control system
checked and repaired as necessary
could lead to poor driveability, reduced
fuel economy, and possible damage to
the emission control system.
2-22Instruments and controls

Turn signal/hazardindicator lights
The appropriate light flashes when the turn
signal switch is activated.
Both lights flash when the hazard switch is
turned on.
Vehicle Dynamic Control(VDC) OFF indicator light
This indicator light comes on when the
VDC OFF switch is pushed to the OFF posi-
tion, the transfer case is in the 4LO position
(
model), or when the VDC system
is not functioning properly. This indicates
the VDC system is not operating.
Push the VDC OFF switch again or restart
the engine and the system will operate
normally. For additional information, refer
to “Vehicle Dynamic Control (VDC) system”
in the “Starting and driving” section of this
manual.
The VDC light also comes on when you turn
the ignition key to the ON position. The light
will turn off af ter about 2 seconds if the
system is operational. If the light stays on
or comes on along with the SLIP (
)
indicator light while you are driving, have the VDC system checked. It is recom-
mended that you visit a NISSAN dealer for
this service.
If the battery is removed or discharged, the
VDC system is disabled and the VDC indi-
cator light will not turn off af ter 2 seconds
when the ignition switch is turned to the
ON position. To reset the system, you must
perform the reset procedure. For addi-
tional information, refer to “Vehicle Dy-
namic Control (VDC) system” in the “Start-
ing and driving” section of this manual.
If the light does not go off af ter performing
the reset procedure, have the traction con-
trol system checked. It is recommended
that you visit a NISSAN dealer for this ser-
vice.
While the VDC system is operating, you
might feel slight vibration or hear the sys-
tem working when starting the vehicle or
accelerating, but this is normal.
The VDC system will be disabled and the
VDC light will illuminate when the elec-
tronic locking rear differential (E-lock) sys-
tem switch (if so equipped) is turned on
and the E-lock system is engaged. If the
E-lock system disengages or the switch is
turned off, the VDC system will be enabled
and the VDC light will turn off.
AUDIBLE REMINDERS
Brake pad wear warning
The disc brake pads have audible wear
warnings. When a disc brake pad requires
replacement, it makes a high pitched
scraping sound when the vehicle is in mo-
tion, whether or not the brake pedal is de-
pressed. Have the brakes checked as soon
as possible if the warning sound is heard.
Key reminder chime
A chime sounds if the driver’s door is
opened while the key is lef t in the ignition
switch. Remove the key and take it with you
when leaving the vehicle.
Light reminder chime
With the ignition switch placed in the OFF
position, a chime sounds when the driver’s
door is opened if the headlights or parking
lights are on.
Turn the headlight control switch off before
leaving the vehicle.
2-24Instruments and controls

∙ When cleaning the seat, never usegasoline, benzine, thinner, or any
similar materials.
∙ If any malfunctions are found or the heated seat does not operate, turn
the switch off and have the system
checked. It is recommended that you
visit a NISSAN dealer for this service.
∙ The battery could run down if the seat heater is operated while the engine is
not running.
The vehicle should be driven with the VDC
system on for most driving conditions.
If the vehicle is stuck in mud or snow, the
VDC system reduces the engine output to
reduce wheel spin. The engine speed will
be reduced even if the accelerator is de-
pressed to the floor. If maximum engine
power is needed to free a stuck vehicle,
turn the VDC system off.
To turn off the VDC system, push the VDC
OFF switch. The
indicator will come
on. Push the VDC OFF switch again or restart
the engine to turn on the system. For addi-
tional information, refer to “Vehicle Dy-
namic Control (VDC) system” in the “Start-
ing and driving” section of this manual.
LIC3344
VEHICLE DYNAMIC CONTROL (VDC)
OFF SWITCH
Instruments and controls2-35

WARNING
∙ Make sure the hood is completelyclosed and latched before driving.
Failure to do so could cause the hood
to fly open and result in an accident.
∙ If you see steam or smoke coming from the engine compartment, to
avoid injury do not open the hood.
FUEL-FILLER CAP
WARNING
∙ Gasoline is extremely flammable andhighly explosive under certain condi-
tions. You could be burned or seri-
ously injured if it is misused or mis-
handled. Always stop the engine and
do not smoke or allow open flames or
sparks near the vehicle when
refueling. ∙ Do not attempt to top off the fuel tank
af ter the fuel pump nozzle shuts off
automatically. Continued refueling
may cause fuel overflow, resulting in
fuel spray and possibly a fire.
∙ Use only an original equipment type fuel-filler cap as a replacement. It has
a built-in safety valve needed for
proper operation of the fuel system
and emission control system. An in-
correct cap can result in a serious mal-
function and possible injury. It could
also cause the
Malfunction Indi-
cator Light (MIL) to come on.
∙ Never pour fuel into the throttle body to attempt to start your vehicle.
∙ Do not fill a portable fuel container in the vehicle or trailer. Static electricity
can cause an explosion of flammable
liquid, vapor or gas in any vehicle or
trailer. To reduce the risk of serious
injury or death when filling portable
fuel containers:
– Always place the container on the ground when filling.
– Do not use electronic devices when filling.
LPD2698
FUEL-FILLER DOOR
Pre-driving checks and adjustments3-11

THREE-WAY CATALYST
The three-way catalyst is an emission con-
trol device installed in the exhaust system.
Exhaust gases in the three-way catalyst
are burned at high temperatures to help
reduce pollutants.
WARNING
∙ The exhaust gas and the exhaust sys-tem are very hot. Keep people, ani-
mals or flammable materials away
from the exhaust system
components.
∙ Do not stop or park the vehicle over flammable materials such as dry
grass, waste paper or rags. They may
ignite and cause a fire.
CAUTION
∙ Do not use leaded gasoline. Depositsfrom leaded gasoline will seriously re-
duce the three-way catalyst’s ability
to help reduce exhaust pollutants. ∙ Keep your engine tuned up. Malfunc-
tions in the ignition, fuel injection, or
electrical systems can cause overrich
fuel flow into the three-way catalyst,
causing it to overheat. Do not keep
driving if the engine misfires, or if no-
ticeable loss of performance or other
unusual operating conditions are de-
tected. Have the vehicle inspected
promptly. It is recommended that you
visit a NISSAN dealer for this service.
∙ Avoid driving with an extremely low fuel level. Running out of fuel could
cause the engine to misfire, damag-
ing the three-way catalyst.
∙ Do not race the engine while warming it up.
∙ Do not push or tow your vehicle to start the engine.TIRE PRESSURE MONITORING
SYSTEM (TPMS)
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on
the vehicle placard or tire inflation pressure
label. (If your vehicle has tires of a different
size than the size indicated on the vehicle placard or tire inflation pressure label, you
should determine the proper tire inflation
pressure for those tires.)
As an added safety feature, your vehicle
has been equipped with a Tire Pressure
Monitoring System (TPMS) that illuminates
a low tire pressure telltale when one or
more of your tires is significantly under-
inflated. Accordingly, when the low tire
pressure telltale illuminates, you should
stop and check your tires as soon as pos-
sible, and inflate them to the proper pres-
sure. Driving on a significantly under-
inflated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and
stopping ability.
Please note that the TPMS is not a substi-
tute for proper tire maintenance, and it is
the driver’s responsibility to maintain cor-
rect tire pressure, even if under-inflation
has not reached the level to trigger illumi-
nation of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
Starting and driving5-3

∙ Make sure the area around the vehicle isclear.
∙ Check fluid levels such as engine oil, coolant, brake and clutch fluid (if so
equipped), and windshield-washer fluid
as frequently as possible, or at least
whenever you refuel.
∙ Check that all windows and lights are clean.
∙ Visually inspect tires for their appear- ance and condition. Also check tires for
proper inflation.
∙ Check that all doors are closed.
∙ Position seat and adjust head restraints/headrests.
∙ Adjust inside and outside mirrors.
∙ Fasten the seat belt and ask all passen- gers to do likewise.
∙ Check the operation of warning lights when the key is placed in the ON posi-
tion. For additional information, refer to
“Warning lights, indicator lights and au-
dible reminders” in the “Instruments
and controls” section of this manual. 1. Apply the parking brake.
2.
Automatic transmission:
Move the shif t lever to P (Park) or N
(Neutral). P (Park) is recommended.
The shif t lever cannot be moved out
of the P (Park) position and into any
of the other gear positions if the ig-
nition switch is placed in the OFF po-
sition or if the key is removed from
the ignition switch.
The starter is designed not to oper-
ate if the shif t lever is in any of the
driving positions.
Manual transmission:
Move the shif t lever to N (Neutral). De-
press the clutch pedal to the floor
while cranking the engine.
The starter is designed not to oper-
ate unless the clutch pedal is fully
depressed. 3. Crank the engine
with your foot off
the accelerator pedal by placing the
ignition switch in the START position.
Release the key when the engine
starts. If the engine starts, but fails to
run, repeat the above procedure.
∙ If the engine is very hard to start in extremely cold weather or when re-
starting, depress the accelerator
pedal a little (approximately 1/3 to the
floor) and hold it and then crank the
engine. Release the key and the ac-
celerator pedal when the engine
starts.
∙ If the engine is very hard to start be- cause it is flooded, depress the accel-
erator pedal all the way to the floor
and hold it. Crank the engine for
5-6 seconds. Af ter cranking the en-
gine, release the accelerator pedal.
Crank the engine with your foot off
the accelerator pedal by placing the
ignition in the START position. Re-
lease the key when the engine starts.
If the engine starts, but fails to run,
repeat the above procedure.
BEFORE STARTING THE ENGINE STARTING THE ENGINE
Starting and driving5-13