2020 NISSAN FRONTIER check engine light

NISSAN VEHICLE IMMOBILIZER
SYSTEM
The NISSAN Vehicle Immobilizer System
will not allow the engine to start without
the use of the registered key.
If the engine fails to start using a registered
key (for example, when interference is
caused by another registered key, an auto-
mated toll road device or automatic pay-
ment device on the key ring), restart the
engine using the following procedures:
1. Leave the ignition switch in the ON posi-tion for approximately 5 seconds.
2. Place the ignition switch in the OFF or LOCK position, and wait approximately
10 seconds.
3. Repeat steps 1 and 2.
4. Restart the engine while holding the de- vice (which may have caused the inter-
ference) separate from the registered
key.
If the no start condition re-occurs, NISSAN
recommends placing the registered key on
a separate key ring to avoid interference
from other devices. • Make sure the area around the vehicle is
clear.
• Check fluid levels such as engine oil, cool- ant, brake, 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 appearance 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 ignition switch is placed in the
ON position. For additional information,
refer to “Warning lights, indicator lights
and audible reminders” in the “Instru-
ments and controls” section of this
manual. 1. Apply the parking brake.
2. Move the shif t lever to P (Park) or N (Neu-
tral). P (Park) is recommended.
The starter is designed not to operate
unless the shif t lever is in either P
(Park) or N (Neutral).
3. Push the ignition switch to the ON posi- tion. Depress the brake pedal and push
the ignition switch to start the engine.
To start the engine immediately, push
and release the ignition switch while de-
pressing the brake pedal with the igni-
tion switch in any position.
• 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 while holding, crank the en-
gine. Release the accelerator 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. Push the ignition switch to
the ON position to start cranking the
engine. Af ter 5 or 6 seconds, stop
cranking by pushing the ignition
switch to the LOCK position. Af ter
BEFORE STARTING THE ENGINE STARTING THE ENGINE
Starting and driving5-13

• Keep your engine tuned up.
• Follow the recommended scheduledmaintenance.
• Keep the tires inflated to the correct pres- sure. Low tire pressure increases tire
wear and lowers fuel economy.
• Keep the wheels in correct alignment. Im- proper alignment increases tire wear and
lowers fuel economy.
• For vehicles equipped with
, use 4H
or 4L position only when necessary.
4-Wheel Drive operation lowers fuel
economy.
• Use the recommended viscosity engine oil. For additional information, refer to “En-
gine oil and oil filter recommendations” in
the “Technical and consumer informa-
tion” section of this manual.
WARNING
• For 4WD equipped vehicles, do not
attempt to raise two wheels off the
ground and shif t the transmission to
any drive or reverse position with the
engine running. Doing so may result
in drivetrain damage or unexpected
vehicle movement which could result
in serious vehicle damage or per-
sonal injury.
• Do not attempt to test a 4WD
equipped vehicle on a 2-wheel dyna-
mometer (such as the dynamom-
eters used by some states for emis-
sions testing), or similar equipment
even if the other two wheels are
raised off the ground. Make sure you
inform test facility personnel that
your vehicle is equipped with 4WD
before it is placed on a dynamom-
eter. Using the wrong test equipment
may result in drivetrain damage or
unexpected vehicle movement
which could result in serious vehicle
damage or personal injury.CAUTION
• Do not drive the vehicle in the 4H or
4LO position on dry hard surface
roads. Driving on dry, hard surfaces in
4H or 4LO may cause unnecessary
noise, tire wear and increased fuel
consumption.
If the 4WD warning light turns on
when you are driving on dry hard sur-
face roads:
– In the 4H position, shif t the 4WD
shif t switch to 2–Wheel Drive
(2WD).
– In the 4LO position for automatic
transmission vehicles, stop the
vehicle and shif t the shif t lever to
the N (Neutral) position with the
brake pedal depressed and shif t
the 4WD shif t switch to 2WD.
• If the warning light is still on af ter the
above operation, have your vehicle
checked as soon as possible. It is rec-
ommended that you visit a NISSAN
dealer for this service.
INCREASING FUEL ECONOMYUSING 4–WHEEL DRIVE (4WD)
(if so equipped)
Starting and driving5-23

*1: Before moving the shif t lever from N (Neutral), wait until the transfer 4LO position indicator light stays on steady. This indicates that the 4WD shif t procedure
is completed and the transfer gear is correctly set in the 4LO position. If the vehicle is shif ted into gear before the indicator is on steady, the transf er gear
may grind, not engage correctly or stay in the neutral position.
- If the 4WD warning light illuminates, perform the following procedure to return the transfer case to correct operating condition.
1. Turn off the engine by placing the ignition switch in the OFF position.
2. Start the engine.
- Check that the 4WD warning light turns off. If the 4WD warning light illuminates, have the system checked. It is recommended that you visit a NISSAN dea ler
for this service.
3. Apply the parking brake, depress the brake pedal and move the shif t lever to N (Neutral) position.
4. With the brake pedal depressed, move the 4WD shif t switch to the desired mode.
- Be sure to wait until the transfer gear change completes before shif ting the shif t lever from the N (Neutral) position.
*2: While changing in and out of 4LO, the ignition switch must be in the ON position and the vehicle's engine must be running for a shif t to take place and for the indicator lights (4WD shif t and 4LO position indicator) to be operable. Otherwise, the shif t will not take place and no indicator lights will be on o r flashing.
*3: Make sure the transfer 4LO position indicator light turns on when you shif t the 4WD shif t switch to 4LO. The
indicator light will also turn on when 4LO
is selected. For additional information, refer to “Vehicle Dynamic Control (VDC) system” in this section.
When the 4LO position is selected, the VDC system is disabled and the VDC off indicator light illuminates, refer to “Vehicle Dynamic Control (VDC) off indicator
light” in the “Instruments and controls” section of this manual.
Starting and driving5-25

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 com-
pleted, 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 recom-
mended 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.
LSD0147
5-28Starting and driving

ANTI-LOCK BRAKING SYSTEM (ABS)
WARNING
• The ABS is a sophisticated device, but
it cannot prevent accidents resulting
from careless or dangerous driving
techniques. It can help maintain ve-
hicle control during braking on slip-
pery surfaces. Remember that stop-
ping distances on slippery surfaces
will be longer than on normal sur-
faces even with ABS. Stopping dis-
tances may also be longer on rough,
gravel or snow covered roads, or if
you are using tire chains. Always
maintain a safe distance from the ve-
hicle in front of you. Ultimately, the
driver is responsible for safety.
• Tire type and condition may also af-
fect braking effectiveness.
– When replacing tires, install the
specified size of tires on all four
wheels. –
When installing a spare tire, make
sure that it is the proper size and
type as specified on the Tire and
Loading Information label. For ad-
ditional information, refer to “Tire
and Loading Information label” in
the “Technical and consumer in-
formation” section of this manual.
– For additional information, refer
to “Wheels and tires” in the “Do-it-
yourself ” section of this manual.
The ABS controls the brakes so the wheels
do not lock during hard braking or when
braking on slippery surfaces. The system
detects the rotation speed at each wheel
and varies the brake fluid pressure to pre-
vent each wheel from locking and sliding.
By preventing each wheel from locking, the
system helps the driver maintain steering
control and helps to minimize swerving
and spinning on slippery surfaces.
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 dis-
tances.
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 the
instrument 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.
Starting and driving5-33

To shut off the engine in an emergency
situation while driving, perform the follow-
ing procedure:
– Rapidly push the push-button ignitionswitch three consecutive times in less
than 1.5 seconds, or
– Push and hold the push-button ignition switch for more than 2 seconds.TIRE PRESSURE MONITORING
SYSTEM (TPMS)
This vehicle is equipped with TPMS. It moni-
tors tire pressure of all tires except the
spare. When the low tire pressure warning
light is lit, and the CHECK TIRE PRES (pres-
sure) warning message is displayed in the
odometer, one or more of your tires is sig-
nificantly under-inflated. If the vehicle is be-
ing driven with low tire pressure, the TPMS
will activate and warn you of it by the low
tire pressure warning light. This system will
activate only when the vehicle is driven at
speeds above 16 mph (25 km/h). For addi-
tional information, refer to “Warning lights,
indicator lights and audible reminders” in
the “Instruments and Controls” section,
and “Tire Pressure Monitoring System
(TPMS)” in the “Starting and driving” section
of this manual.
WARNING
• Radio waves could adversely affect
electric medical equipment. Those
who use a pacemaker should contact
the electric medical equipment
manufacturer for the possible influ-
ences before use. •
If the low tire pressure warning light
illuminates 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.
Driving with under-inflated tires may
permanently damage the tires and
increase the likelihood of tire failure.
Serious vehicle damage could occur
and may lead to an accident and
could result in serious personal in-
jury. Check the tire pressure for all
four tires. Adjust the tire pressure to
the recommended COLD tire pres-
sure shown on the Tire and Loading
Information label to turn the low tire
pressure warning light OFF. If the
light still illuminates while driving af-
ter adjusting the tire pressure, a tire
may be flat or the TPMS may be mal-
functioning. If you have a flat tire, re-
place it with a spare tire as soon as
possible. If no tire is flat and all tires
are properly inflated, have the ve-
hicle checked. It is recommended
that you visit a NISSAN dealer for this
service.
EMERGENCY ENGINE SHUT OFF FLAT TIRE
In case of emergency6-3

8 Do-it-yourself
Maintenance precautions.......................8-2
Engine compartment check locations ...........8-3
Engine cooling system ..........................8-4
Checking engine coolant level ................8-5
Changing engine coolant ....................8-5
Engine oil .......................................8-6
Checking engine oil level .....................8-6
Changing engine oil and oil filter ..............8-6
Automatic Transmission Fluid (ATF) .............8-10
Power Steering Fluid (PSF) ......................8-10
Brake fluid ....................................... 8-11
Brake fluid .................................... 8-11
Windshield-washer fluid ........................8-12
Windshield-washer fluid reservoir ...........8-12
Battery......................................... 8-13
Jump starting ............................... 8-14
Variable voltage control system ................8-15
Drive belt ....................................... 8-15
Spark plugs .................................... 8-16
Replacing spark plugs .......................8-16Air cleaner
..................................... 8-17
In-cabin microfilter .......................... 8-17
Windshield wiper blades ........................8-18
Cleaning .................................... 8-18
Replacing ................................... 8-19
Brakes ......................................... 8-20
Fuses .......................................... 8-20
Engine compartment ....................... 8-21
Passenger compartment ...................8-22
Battery replacement ........................... 8-24
NISSAN Intelligent Key® ......................8-24
Lights .......................................... 8-26
Headlights .................................. 8-26
Fog lights (if so equipped) ...................8-27
Exterior and interior lights ...................8-28
Wheels and tires ............................... 8-30
Tire pressure ................................ 8-30
Tire labeling ................................. 8-33
T
ypes of tires ................................ 8-36
Tire chains .................................. 8-37
Changing wheels and tires ..................8-38

CAUTION
Be careful not to burn yourself, as the
engine oil is hot.
WARNING
• Prolonged and repeated contact
with used engine oil may cause skin
cancer.
• Try to avoid direct skin contact with
used oil. If skin contact is made, wash
thoroughly with soap or hand
cleaner as soon as possible.
• Keep used engine oil out of reach of
children.
4. Loosen the oil filter with an oil filter wrench by turning it counterclockwise.
Remove the oil filter by turning it by
hand.
5. Wipe the engine oil filter mounting sur- face with a clean rag.
CAUTION
Be sure to remove any old gasket ma-
terial remaining on the sealing surface
of the engine. Failure to do so could
lead to an oil leak and engine damage. •
The dipstick must be inserted in
place to prevent oil spillage from the
dipstick hole when filling the engine
with oil.
6. Coat the gasket on the new filter with clean engine oil.
It is recommended that you use a Genu-
ine NISSAN oil filter or equivalent, visit
your NISSAN dealer parts department
for proper part.
7. Screw in the oil filter clockwise until a slight resistance is felt, then tighten addi-
tionally more than 2/3 turn.
Oil filter tightening torque: 11 to 15 f t-lb (15.0 to 21.0 N·m)
8. Clean and re-install the drain plug with a new washer. Securely tighten the drain
plug with a wrench. Do not use exces-
sive force.
Drain plug tightening torque: 22 to 29 f t-lb (29.4 to 39.2 N·m)
9. Refill the engine with the recommended oil through the oil filler opening, and in-
stall the oil filler cap securely.
CAUTION
Do not spill fluids on engine cover. This
could damage the engine cover. If flu-
ids are spilled, immediately clean sur-
face with a neutral detergent. Do not
use an organic solvent such as brake
cleaner.
For additional information about drain and
refill capacity, refer to “Recommended
fluids/lubricants and capacities” in the
“Technical and consumer information” sec-
tion of this manual. The drain and refill ca-
pacity depends on the oil temperature and
drain time. Use these specifications for ref-
erence only. Always use the dipstick to de-
termine the proper amount of oil in the
engine.
10. Start the engine and check for leakage around the drain plug and the oil filter.
Correct as required. Turn the engine off
and wait more than 15 minutes. Check
the oil level with the dipstick. Add en-
gine oil if necessary.
Do-it-yourself8-9