2020 NISSAN FRONTIER ECU

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.
orApply parking
brake warning
light (if so
equipped)
This warning light appears when a mal-
function occurs in the electric shif t control
system below 3 mph (5 km/h).
Have the system checked. It is recom-
mended that you visit a NISSAN dealer for
this service.
Automatic Transmission
check warning light
When the ignition switch is placed in the ON
position, the light comes on for about 2
seconds. If the light comes on at any other
time, it may indicate the automatic trans-
mission system is not functioning properly.
Have the system checked. It is recom-
mended that you visit a NISSAN dealer for
this service.
Automatic Transmission
Park warning light (
model)
WARNING
• If the ATP light is ON, this indicates
that the automatic transmission P
(Park) position will not function and
the transfer case is in neutral.
• When parking, always make sure that
the 4WD shif t indicator light illumi-
nates and the parking brake is set.
Failure to engage the transfer posi-
tion in 2WD, 4H or 4LO could result in
the vehicle moving unexpectedly, re-
sulting in serious personal injury or
property damage.
• Shif t the 4WD switch into the 2WD, 4H
or 4LO position again to turn off the
ATP warning light when the shif t le-
ver is in the P position and the ATP
warning light is ON. (Before shif ting
the 4WD switch into the 4LO position,
move the shif t lever into the N posi-
tion once, shif t the shif t lever into P
again and make sure the ATP warn-
ing light is OFF.) This light indicates that the automatic
transmission parking function is not en-
gaged. If the transfer control is not secured
in any drive position while the shif t lever is
in the P (Park) position, the transmission will
disengage and the drive wheels will not
lock.
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.
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.
2-16Instruments and controls

2. If the brake fluid level is correct, have thewarning system checked. It is recom-
mended 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 re-
pairs. 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 stop-
ping distance and braking will re-
quire 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.
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, or missing, or if the
light remains on, have the system checked.
It is recommended that you visit a NISSAN
dealer for this service.
CAUTION
• Do not ground electrical accessories
directly to the battery terminal. Do-
ing so will bypass the variable volt-
age control system and the vehicle
battery may not charge completely.
For additional information, refer to
“Variable voltage control system” in
the “Do-it-yourself ” section of this
manual.
• Do not continue driving if the genera-
tor belt is loose, broken or missing.
Door open warning light
This light comes on when any of the doors
are not closed securely while the ignition
switch is in the ON position.
Electric shif t control system
warning light
This light illuminates when a malfunction
occurs in the electric shif t control system.
Have the system checked. It is recom-
mended that you visit a NISSAN dealer for
this service.
Engine oil pressure
warning light
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
additional information, refer to “Engine oil”
in the “Do-it-yourself ” section of this
manual.
Instruments and controls2-17

– 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.
Security indicator light
(if so equipped)
This light blinks when the ignition switch is
in the OFF, LOCK or ACC position. This func-
tion indicates the security systems
equipped on the vehicle are operational.
For additional information, refer to “Security
systems” in this section.
SET 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.
Slip indicator light
This indicator will blink when the VDC sys-
tem is operating, thus alerting the driver to
the fact that the road surface is slippery
and the vehicle is nearing its traction limits.
You may feel or hear the system working;
this is normal.
The light will blink for a few seconds af ter
the VDC system stops limiting wheel spin.
The
indicator light also comes on
when you place the ignition switch in the
ON position. The light will turn off af ter ap-
proximately 2 seconds if the system is op-
erational. If the light does not come on
have the system checked. It is recom-
mended that you visit a NISSAN dealer for
this service.
Transfer 4LO position
indicator light
(
model)
This light comes on when the 4WD shif t
switch is set in the 4LO position with the
ignition switch in the ON position.
The transfer case may be damaged if you
shif t the switch while driving.
Make sure the transfer 4LO position indica-
tor light turns on when you shif t the 4WD
shif t switch to 4LO.
The indicator light may blink while shif t-
ing from one drive mode to the other.
The 4LO indicator light must stop blinking
and remain illuminated or turn off before
shif ting the transmission into gear. If the
shif t lever is shif ted from the N (Neutral)
position to any other gear when the 4LO
indicator light is blinking, the vehicle may
move unexpectedly.
When you shif t between 4H and 4LO, follow
the instructions below:
• Stop the vehicle and move the shif t lever to the N (Neutral) position with the brake
pedal depressed, then depress and turn
the 4WD shif t switch to 4LO or 4H.
Instruments and controls2-23

NISSAN Intelligent Key® door
buzzer
The Intelligent Key door buzzer sounds if
any one of the following improper opera-
tions is found.
• The Intelligent Key is lef t inside the vehiclewhen locking the doors.
• The Intelligent Key is taken outside the vehicle when operating the vehicle.
When the buzzer sounds, be sure to check
both the vehicle and the Intelligent Key. For
additional information, refer to “NISSAN In-
telligent Key®” in the “Pre-driving checks
and adjustments” section of this manual. Your vehicle may have two types of security
systems:
• Vehicle security system (if so equipped)
• NISSAN Vehicle Immobilizer System (if soequipped)
VEHICLE SECURITY SYSTEM (if so
equipped)
The vehicle security system provides visual
and audible alarm signals if someone
opens the doors when the system is
armed. It is not, however, a motion
detection-type system that activates
when a vehicle is moved or when a vibra-
tion occurs.
The system helps deter vehicle thef t but
cannot prevent it, nor can it prevent the
thef t of interior or exterior vehicle compo-
nents in all situations. Always secure your
vehicle even if parking for a brief period.
Never leave your keys in the vehicle, and
always lock the vehicle when unattended.
Be aware of your surroundings, and park in
secure, well-lit areas whenever possible.
Many devices offering additional protec-
tion, such as component locks, identifica-
tion markers, and tracking systems, are
available at auto supply stores and spe-
cialty shops. A NISSAN dealer may also offer
such equipment. Check with your insur-
ance company to see if you may be eligible
for discounts for various thef t protection
features.
LIC3766
SECURITY SYSTEMS (if so equipped)
Instruments and controls2-25

How to arm the vehicle security
system
1. Close all windows.(The system can be
armed even if the windows are open.)
2. Remove the Intelligent Key from the vehicle.
3. Close all doors. Lock all doors. The doors can be locked with the key, power door
lock switch (if the door is opened, locked
and then closed), or with the key fob.
Key fob operation:
• Press the
button on the key fob. All
doors lock. The hazard lights flash twice
and the horn beeps once to indicate all
doors are locked.
• When the
button is pressed with all
doors locked, the hazard lights flash twice
and the horn beeps once as a reminder
that the doors are already locked.
The horn may or may not beep. For addi-
tional information, refer to “Silencing the
horn beep feature” in the “Pre-driving
checks and adjustments” section of this
manual. 4. Confirm that the
indicator light
comes on. Theindicator light
stays on for about 30 seconds. The ve-
hicle security system is now pre-armed.
Af ter about 30 seconds the vehicle se-
curity system automatically shif ts into
the armed phase. The
indicator
light begins to flash once every 3 sec-
onds. If, during the 30-second pre-arm
time period, the driver's door is unlocked
by the key or the key fob or the ignition
switch is placed in ACC or ON position,
the system will not arm.
• If the key is turned slowly when locking
the driver's door, the system may not
arm. Furthermore, if the key is turned
beyond the vertical position toward
the unlock position the system may be
disarmed when the key is removed. If
the indicator light fails to glow for a
period of time, unlock the door once
and lock it again.
• Even when the driver and/or passen-
gers are in the vehicle, the system will
arm with all doors closed and locked
with the ignition switch placed in the
OFF position.
Vehicle security system activation
The vehicle security system will give the
following alarm:
• The headlights blink and the horn sounds intermittently.
• The alarm automatically turns off af ter a period of time. However, the alarm reacti-
vates if the vehicle is tampered with
again. The alarm can be shut off by un-
locking the driver's door with the key or
by pressing the
button on the key
fob.
The alarm is activated by:
• Opening a door without using the key or key fob (even if the door is unlocked by
using the inside lock knob or the power
door lock switch).
How to stop an activated alarm
The alarm stops only by unlocking the driv-
er's door with the key or by pressing the
button on the key fob.
2-26Instruments and controls

NISSAN VEHICLE IMMOBILIZER
SYSTEM (if so equipped)
The NISSAN Vehicle Immobilizer System
will not allow the engine to start without
the use of a 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. 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 of
the device.
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.
Security indicator light (if so
equipped)
This light blinks when the ignition switch is
placed in the LOCK position.
This function indicates the NISSAN Vehicle
Immobilizer System is operational.
If the NISSAN Vehicle Immobilizer System is
malfunctioning, the light will remain on
while the ignition switch is placed in the ON
position.
LIC0474
Instruments and controls2-27

UNDER-SEAT STORAGE BINS (if so
equipped)
WARNING
• Properly secure all cargo with ropes
or straps to help prevent it from slid-
ing or shif ting. In a sudden stop or
collision, unsecured cargo could
cause personal injury.
• The cargo restrained in the under-
seat storage bins must not exceed
the weight limits listed below or the
bins may not stay secured. In a sud-
den stop or collision, the unsecured
bins could cause personal injury.
King Cab® model: 16 lbs. (7.25 kg)
Crew Cab model Driver’s side: 16 lbs. (7.25 kg)
Passenger’s side: 25 lbs. (11.33 kg)
• If the under-seat storage bins are re-
moved for any reason, they should be
securely stored to prevent them from
causing injury to passengers or dam-
age to the vehicle in case of sudden
braking or an accident.
• Do not place sharp objects in the
under-seat storage bins. Such ob-
jects may become dangerous projec-
tiles and cause injury when the ve-
hicle is moving or if the vehicle is
involved in a collision.
LIC4496
Rear row under-seat storage bin (King Cab® model)
LIC4497
Rear row under-seat storage bin (Crew Cab model)
2-42Instruments and controls

ROOF RACK (if so equipped)WARNING
• Drive extra carefully when the vehicle
is loaded at or near the cargo carry-
ing capacity, especially if the signifi-
cant portion of that load is carried on
the roof rack. •
Heavy loading of the roof rack has
the potential to affect the vehicle
stability and handling during sudden
or abnormal handling maneuvers.
• Roof rack load should be evenly
distributed.
• Do not exceed maximum roof rack
load weight capacity.
• Properly secure all cargo with ropes
or straps to help prevent it from slid-
ing or shif ting. In a sudden stop or
collision, unsecured cargo could
cause personal injury.
CAUTION
Use care when placing or removing
items from the roof rack. If you cannot
comfortably lif t the items onto the roof
rack from the ground, use a ladder or
stool.
Always evenly distribute the cargo on the
tubular roof rack. The maximum total
load is 125 lbs. (56 kg) evenly distributed.
Be careful that your vehicle does not ex-
ceed the Gross Vehicle Weight Rating
(GVWR) or the Gross Axle Weight Ratings
(GAWR front and rear). The GVWR and GAWR
are located on the F.M.V.S.S. label (located
WIC0857
2-48Instruments and controls