wheel NISSAN FRONTIER 2021 Workshop Manual

TRANSFER CASE SHIFTING PROCEDURES
The part-time 4WD system provides three positions (2WD, 4H and 4LO), so you can select the desired drive mode according to the driving
conditions.
2WD or 4WD shif t procedure:
4WD Shif t
Switch Position Wheels Driven Indicator Light
Use Conditions 4WD Shif t Procedure
4WD shif t Transfer 4LO
position
2WDRear wheels
For driving on dry, paved roads
(Economy drive) Move the 4WD switch.
2WD <—> 4H
4WD shif t indicator light will indicate
transfer shif t position engaged.
Shif ting between the 2WD and 4H
drive modes can be done while driv-
ing. The indicator will change when
the drive mode is changed. Shif ting
between the 2WD and 4H modes
must be performed at speed below
100 km/h (60 mph).
4H
4 wheels
For driving on rocky, sandy or snow-
covered roads
N (Neutral)
*1
May blink N (Neutral) disengages the auto-
matic transmission (A/T) mechanical
parking lock, which will allow the ve-
hicle to roll. Do not leave the transfer
shif t position in N (Neutral).*2
The 4LO indicator blinks when shif t-
ing between 4H and 4LO 1. Stop the vehicle.
2. Move the shif t lever to the N (Neu-
tral) position with the brake pedal
depressed.
3. Depress and turn the 4WD shif t switch to 4LO or 4H with the
brake pedal depressed.
THE TRANSFER CASE DOES NOT EN-
GAGE BETWEEN 4H AND 4LO (OR
4LO TO 4H) UNLESS YOU HAVE FIRST
STOPPED THE VEHICLE, DEPRESSED
THE BRAKE PEDAL AND MOVED THE
SHIFT LEVER TO N (NEUTRAL) FOR
A/T VEHICLES. *3
4LO
4 wheels
Illuminated For use when maximum power and
traction is required (for example, on
steep grades or rocky, sandy, muddy
roads)
5-24Starting and driving

The transfer case 4WD shif t switch is used
to select either 2WD or 4WD depending on
the driving conditions. There are three
types of drive modes available, 2WD, 4H and
4LO.
The 4WD shif t switch electronically controls
the transfer case operation. Rotate the
switch to move between each mode, 2WD,
4H and 4LO.
To change into or out of 4LO, the vehicle
MUST be stationary, move the shif t lever
to N (Neutral), and depress the brake
pedal. The switch must be depressed
and turned when changing into or out of
4LO.
WARNING
• When parking, apply the parking
brake before stopping the engine
and make sure that the 4WD shif t in-
dicator light is on and the ATP warn-
ing light goes off. Otherwise, the ve-
hicle could unexpectedly move even
if the A/T is in the P (Park) position. •
The transfer 4LO position 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
transfer 4LO position indicator light
is blinking, the vehicle may move
unexpectedly.
CAUTION
• Never shif t the 4WD shif t switch be-
tween 4LO and 4H while driving.
• The 4H position provides greater
traction. Avoid excessive speed, as it
will cause increased fuel consump-
tion and higher oil temperatures, and
could damage drivetrain compo-
nents. Speeds over 62 mph (100
km/h) in 4H is not recommended.
• The 4LO position provides maximum
power and traction. Avoid raising ve-
hicle speed excessively, as the maxi-
mum speed is approximately 31 mph
(50 km/h).
•
When driving straight, shif t the 4WD
shif t switch to the 2WD or 4H position.
Do not move the 4WD shif t switch
when making a turn or reversing.
• Do not shif t the 4WD shif t switch (be-
tween 2WD and 4H) while driving on
steep downhill grades. Use the en-
gine brake and low gears 2 (Second
gear) or 1 (Low gear), for engine
braking.
• Do not operate the 4WD shif t switch
(between 2WD and 4H) with the rear
wheels spinning.
• Do not drive on dry hard surface
roads in the 4H or 4LO position. Driv-
ing on dry hard surfaces in 4H or 4LO
may cause unnecessary noise and
tire wear. NISSAN recommends driv-
ing in the 2WD position under these
conditions.
• The 4WD transfer case may not be
shif ted between 4H and 4LO at low
ambient temperatures and the
transfer 4LO position indicator light
may blink even when the 4WD shif t
switch is shif ted. Af ter driving for a
while you can change the 4WD trans-
fer case between 4H and 4LO.
5-26Starting and driving

When driving on rough roads:
• Set the 4WD shif t switch to 4H or 4LO.
• Drive carefully according to the road sur-face conditions.
When the vehicle is stuck:
• Set the 4WD shif t switch to 4H or 4LO.
• Use the Electronic Locking Rear Differen- tial (E-Lock) system (if so equipped). Turn
the switch ON while the vehicle is station-
ary and apply the throttle to try to free the
vehicle.
• If it is difficult to free the vehicle, rock the vehicle back and forth between R (Re-
verse) and D (Drive) gears.
• If the vehicle is stuck deep in mud, place stones or wooden blocks under the tires.
Then try the recovery procedures above.
Tire chains may be effective.
CAUTION
• When driving straight, shif t the 4WD
shif t switch to the 2WD or 4H posi-
tion. Do not move the 4WD shif t
switch when making a turn or
reversing.
• Do not shif t the 4WD shif t switch
while driving on steep downhill
grades. Use the engine brake and low
automatic transmission gears (M1 or
M2) for engine braking.
• Do not operate the 4WD shif t switch
with the rear wheels spinning.
• Before placing the 4WD shif t switch
in the 4H position from 2WD, ensure
the vehicle speed is less than 62 mph
(100 km/h). Failure to do so can dam-
age the 4WD system.
• Never shif t the 4WD shif t switch be-
tween 4LO and 4H while driving.

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.
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

If the 4WD warning light comes on, the 4WD
shif t indicator light goes out.
A large difference between the diameters
of front and rear wheels will make the
warning light blink slowly (about once per 1
second). Change the 4WD shif t switch into
2WD and do not drive fast.

WARNING
• 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.
•
Safe parking procedures require that
both the parking brake be set and the
transmission placed into P (Park). Fail-
ure to do so could cause the vehicle to
move unexpectedly or roll away and re-
sult in an accident. Make sure the shif t
lever has been pushed as far forward as
it can go and cannot be moved without
depressing the foot brake pedal.
• Never leave the engine running while
the vehicle is unattended.
• Do not leave children unattended in-
side the vehicle. They could unknow-
ingly activate switches or controls or
make the vehicle move. Unattended
children could become involved in
serious accidents.
•
To help avoid risk of injury or death
through unintended operation of the
vehicle and/or its systems, do not leave
children, people who require the assis-
tance of others or pets unattended in
your vehicle. Additionally, the tempera-
ture inside a closed vehicle on a warm day can quickly become high enough to
cause a significant risk of injury or
death to people and pets.
1. Firmly apply the parking brake.
2. Move the shif t lever to the P (Park)
position.
3. To help prevent the vehicle from rolling into traffic when parked on an incline, it
is a good practice to turn the wheels as
illustrated.
• HEADED DOWNHILL WITH CURB
OA:
Turn the wheels into the curb and move
the vehicle forward until the curb side
wheel gently touches the curb.
• HEADED UPHILL WITH CURB
OB:
Turn the wheels away from the curb and
move the vehicle back until the curb side
wheel gently touches the curb.
• HEADED UPHILL OR DOWNHILL, NO CURB
OC:
Turn the wheels toward the side of the
road so the vehicle will move away from
the center of the road if it moves.
4. Place the ignition switch in the LOCK position.
WSD0050
PARKING/PARKING ON HILLS
Starting and driving5-31

Normal operation
The Anti-lock Braking System (ABS) oper-
ates at speeds above3-6mph(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 system applies
braking to the slipping wheel, which helps
redirect power to the other wheel.
• On 4–Wheel Drive models the ABLS sys- tem operates in both 4H and 4LO modes.
If 4WD mode is engaged, the ABLS sys-
tem operates for both drive axles. On
2–Wheel Drive vehicles, 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 Vehicle Dynamic
Control system is turned off.
• The ABLS does not operate if both wheels on a drive axle are slipping.

The VDC system uses various sensors to
monitor driver inputs and vehicle motion.
Under certain driving conditions, the VDC
system helps to perform the following
functions:
• Controls brake pressure to reduce wheelslip on one slipping drive wheel so power
is transferred to a non-slipping drive
wheel on the same axle.
• Controls brake pressure and engine out- put to reduce drive wheel slip based on
vehicle speed (traction control function).
• If the 4WD transfer case is shif ted into 4LO the
indicator light will come on and
the VDC system will be turned off. For
additional information, refer to “Using
4–Wheel Drive (4WD)” in this section.
• Controls brake pressure at individual wheels and engine output to help the
driver maintain control of the vehicle in
the following conditions:– Understeer (vehicle tends to not follow the steered path despite increased
steering input)
– Oversteer (vehicle tends to spin due to certain road or driving conditions)
The VDC system can help the driver to
maintain control of the vehicle, but it can-
not prevent loss of vehicle control in all driv-
ing situations. When the VDC system operates, the
indicator light in the instrument panel
flashes so note the following:
• The road may be slippery or the system
may determine some action is required
to help keep the vehicle on the steered
path.
• You may feel a pulsation in the brake pedal and hear a noise or vibration from
under the hood. This is normal and indi-
cates that the VDC system is working
properly.
• Adjust your speed and driving to the road conditions.
For additional information, refer to “Slip in-
dicator light” and ”Vehicle Dynamic Control
(VDC) OFF indicator light” in the ”Instru-
ments and controls” section of this manual.
If a malfunction occurs in the system, the
indicator light will come on in the in-
strument panel. The VDC system auto-
matically turns off when these indicator
lights are off.
The VDC OFF switch is used to turn off the
VDC system. The
indicator light illumi-
nates to indicate the VDC system is off. When the VDC OFF switch is used to turn off
the system, the VDC system still operates
to prevent one drive wheel from slipping by
transferring power to a non-slipping drive
wheel. The
indicator light flashes if this
occurs. All other VDC functions are off and
the
indicator light will not flash.
The VDC system is automatically reset to
on when the ignition switch is placed in the
OFF position then back to the ON position.
The computer has a built-in diagnostic fea-
ture that tests the system each time you
start the engine and move the vehicle for-
ward or in reverse at a slow speed. When
the self-test occurs, you may hear a clunk
noise and/or feel a pulsation in the brake
pedal. This is normal and is not an indica-
tion of a malfunction.
VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM
Starting and driving5-35

WARNING
• The VDC system is designed to help
the driver maintain stability but does
not prevent accidents due to abrupt
steering operation at high speeds or
by careless or dangerous driving
techniques. Reduce vehicle speed
and be especially careful when driv-
ing and cornering on slippery sur-
faces and always drive carefully.
• Do not modif y the vehicle's suspen-
sion. If suspension parts such as
shock absorbers, struts, springs, sta-
bilizer bars, bushings and wheels are
not NISSAN recommended for your
vehicle or are extremely deterio-
rated, the VDC system may not oper-
ate properly. This could adversely af-
fect vehicle handling performance,
and the
indicator light may flash
or theindicator light may
illuminate.
• If brake related parts such as brake
pads, rotors and calipers are not
NISSAN recommended or are ex-
tremely deteriorated, the VDC sys-
tem may not operate properly and
both the
andindicator
lights may illuminate. •
If engine control related parts are not
NISSAN recommended or are ex-
tremely deteriorated, both the
andindicator lights may
illuminate.
• When driving on extremely inclined
surfaces such as higher banked cor-
ners, the VDC system may not oper-
ate properly and the
indicator
light may flash or theindicator
light may illuminate. Do not drive on
these types of roads.
• When driving on an unstable surface
such as a turntable, ferry, elevator or
ramp, the
indicator light may
flash or theindicator light may
illuminate. This is not a malfunction.
Restart the engine af ter driving onto
a stable surface.
• If wheels or tires other than the
NISSAN recommended ones are
used, the VDC system may not oper-
ate properly and the
indicator
light may flash or theindicator
light may illuminate.
• The VDC system is not a substitute
for winter tires or tire chains on a
snow covered road.
BRAKE FORCE DISTRIBUTION
During braking while driving through turns,
the system optimizes the distribution of
force to each of the four wheels depending
on the radius of the turn.
indicator light may flash
or theindicator light may
illuminate.
5-36Starting and driving

•If brake related parts such as brake
pads, rotors and calipers are not
NISSAN recommended or are ex-
tremely deteriorated, the VDC sys-
tem may not operate properly and
both the
and theindicator
lights may illuminate.
• If engine control related parts are not
NISSAN recommended or are ex-
tremely deteriorated, both the
andindicator lights may
illuminate.
• When driving on extremely inclined
surfaces such as higher banked cor-
ners, the VDC system may not oper-
ate properly and the
indicator
light may flash or theindicator
light may illuminate. Do not drive on
these types of roads.
• When driving on an unstable surface
such as a turntable, ferry, elevator or
ramp, the
indicator light may
flash or theindicator light may
illuminate. This is not a malfunction.
Restart the engine af ter driving onto
a stable surface. •
If wheels or tires other than the
NISSAN recommended ones are
used, the VDC system may not oper-
ate properly and the
indicator
light may flash or theindicator
light may illuminate.
• The VDC system is not a substitute
for winter tires or tire chains on a
snow covered road.
WARNING
• Never rely solely on the hill descent
control system to control vehicle
speed when driving on steep down-
hill grades. Always drive carefully and
attentively when using the hill de-
scent control system and decelerate
the vehicle speed by depressing the
brake pedal if necessary. Be espe-
cially careful when driving on frozen,
muddy or extremely steep downhill
roads. Failure to control vehicle
speed may result in a loss of control
of the vehicle and possible serious
injury or death.
• The hill descent control may not con-
trol the vehicle speed on a hill under
all load or road conditions. Always be
prepared to depress the brake pedal
to control vehicle speed. Failure to do
so may result in a collision or serious
personal injury.
The hill descent control system helps
maintain vehicle speed when driving under
15-21 mph (25-35 km/h) on steeper down-
hill grades. Hill descent control is useful
when engine braking alone in 4H or 4L can-
not control vehicle speed. Hill descent con-
trol applies the vehicle brakes to control
HILL DESCENT CONTROL SYSTEM (if
so equipped)
Starting and driving5-37