2003 NISSAN XTERRA engine

During the first 1,200 miles (2,000 km) , follow
these recommendations to obtain maximum en-
gine performance and ensure the future reliability
and economy of your new vehicle. Failure to
follow these recommendations may result in
shortened engine life and reduced engine perfor-
mance.
cAvoid driving for long periods at constant
speed, either fast or slow, and do not run the
engine over 4,000 rpm.
cDo not accelerate at full throttle in any gear.
cAvoid quick starts.
cAvoid hard braking as much as possible.
cDo not tow a trailer for the first 500 miles
(800 km) .cAccelerate slowly and smoothly. Maintain
cruising speeds with a constant accelerator
position.
cDrive at moderate speeds on the highway.
Driving at high speed lowers fuel economy.
cAvoid unnecessary stopping and braking.
Maintain a safe distance behind other ve-
hicles.
cUse a proper gear range which suits road
conditions. On level roads, shift into high
gear as soon as possible.
cAvoid unnecessary engine idling.
cKeep your engine tuned up.
cFollow the recommended periodic mainte-
nance schedule.
cKeep the tires inflated to the correct pres-
sure. Low tire pressure increases tire wear
and lowers fuel economy.
cKeep the front wheels in correct alignment.
Improper alignment increases tire wear and
lowers fuel economy.
c
Air conditioner operation lowers fuel economy.
Use the air conditioner only when necessary.
cWhen cruising at highway speeds, it is more
economical to use the air conditioner and
leave the windows closed to reduce drag.c
Use 4H or 4L position only when
necessary. Four-wheel drive operation low-
ers fuel economy.
BREAK-IN SCHEDULE INCREASING FUEL ECONOMY
5-18Starting and driving
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AUTO-LOCK FREE-
RUNNING HUBS
The auto-lock free-running hub is designed to
allow for automatic four-wheel drive engagement
when the shift lever is moved to the 4H or 4L
position. Follow these operational cautions:
CAUTION
cThe auto-locking hubs will make a
clicking noise when engaging and dis-
engaging. This is normal.cAccelerating quickly from a stop after
shifting from two-wheel drive to four-
wheel drive may not allow engagement
of the auto-locking free-running hubs
and may cause a clattering noise. If this
occurs, release the accelerator pedal to
reduce the engine speed or stop the
vehicle. Continued use of the vehicle
with this noise may damage the hub
lock.
cIf the auto-locking hubs make a clatter-
ing noise after shifting from four-wheel
drive to two-wheel drive, stop and move
the vehicle in reverse gear, in a straight
line, about 7 to 10 feet (2 to 3 m) .
cUnder extremely cold conditions [below
5°F (-15°C)], the front axle shafts may
rotate even with the transfer lever in the
2H position. If this occurs, the auto-
locking hubs may make a clattering
noise. To avoid this, drive first in four-
wheel drive to warm up the vehicle and
differential gear oil. Then, shift to two-
wheel drive.
cIn cold weather, it may be necessary to
reduce speed or stop the vehicle in or-
der to shift from two-wheel drive to
four-wheel drive.cWhen shifting into or out of four-wheel
drive while driving, do not stop shift
lever movement midway. An incomplete
shift may cause a clattering noise from
the auto-locking hubs. Continued use
of the vehicle with this noise may dam-
age the hub lock. Drive in four-wheel
drive to stop the noise. Shift to two-
wheel drive as described.
For Automatic transmission models:
When moving the transfer lever from 4H or 4L to
4L or 4H, you must always move it quickly
through the N position. If you are slow to shift, the
engine idle speed will allow the transfer gears to
speed up and gear clashing will occur.
Do not move the transfer lever from 4H or 4L to
4L or 4H, from 2H to 4L and from 4L to 2H with
the engine turned off. Otherwise, you may have
difficulty in moving the transfer lever to the de-
sired position.
Do not leave the transfer lever in the N position
with the engine running. Stopping with the trans-
fer case in the N position may cause gear grind-
ing when selecting another gear. Changing the
transfer case gear quickly and smoothly will elimi-
nate this.
SD0021
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TO SHIFT
TRANSFER CASESHIFT PROCEDURE FOR AUTO-LOCK FREE RUNNING HUBS
From 2H to 4H Move the transfer case shift lever to 4H at speeds below 25 MPH (40 km/h) . It is not necessary to depress the clutch pedal. Perform this operation when
driving straight, not while cornering.
From 4H to 2H1. Move the transfer case shift lever to 2H. This can be done at any speed, and it is not necessary to depress the clutch pedal. Perform this operation when
driving straight, not while cornering.
2. Disengage the AUTO-LOCK hubs following the procedure outlined below.
NOTE: The 4WD indicator light may not turn off immediately under certain driving conditions, such as when the vehicle is driven uphill.
This is normal and it will shut off as the vehicle is driven further.
AUTO-LOCK HUB DISENGAGEMENT (FREE MODE)
The AUTO-LOCK hubs will not disengage until the vehicle is completely stopped and is then moved in a straight line, approximately 7-10 ft (2-3 m) , in the
opposite direction of travel. For example:
If you were driving the vehicle forward, stop and move the vehicle 7-10 ft (2-3 m) backward.
If you were driving the vehicle in reverse, stop and move the vehicle 7-10 ft (2-3 m) forward.
It is not necessary to immediately return the AUTO-LOCK hubs to FREE MODE when shifting from 4H to 2H. The vehicle may be operated under normal 2H
conditions with the AUTO-LOCK hubs engaged. However, disengaging the AUTO-LOCK hubs will allow for better fuel economy, quieter ride and less com-
ponent wear. Leaving the hubs locked while driving in 2H may be desirable so that you can easily shift to 4H at speeds greater than 25 MPH (40 km/h) .
From 4H to 4L or 4L to
4H1. Stop the vehicle.
Keep the engine running.
2. Depress the clutch pedal, or place the transmission selector lever in the N (Neutral) position.
3. Depress the transfer case shift lever and move it to the 4L or 4H position. Change gears quickly and smoothly.
From 2H to 4L1. Stop the vehicle.
Keep the engine running.
2. Depress the clutch pedal, or place the transmission selector lever in the N (Neutral) position.
3. Depress the transfer case shift lever and move it to the 4L position. Change gears quickly and smoothly.
From 4L to 2H1. Stop the vehicle.
Keep the engine running.
2. Depress the clutch pedal, or place the transmission selector lever in the N (Neutral) position.
3. Depress the transfer case shift lever and move it to the 2H position. Change gears quickly and smoothly.
4. Disengage the AUTO-LOCK hubs following the procedure outlined above.
Starting and driving5-21
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WARNING
cDo not stop or park the vehicle over
flammable materials such as dry grass,
waste paper or rags. They may ignite
and cause a fire.
c
The transfer control lever must
be in the 2H, 4H or 4L position and the
parking brake set to prevent the vehicle
from rolling.cNever place the transfer control lever in
the N (Neutral) position. Otherwise, the
vehicle could roll unexpectedly even if
the manual transmission is in gear or
the automatic transmission is in the P
(Park) position. This could result in se-
rious injury or property damage.cSafe parking procedures require that
both the parking brake be set and the
transmission placed into P (Park) for
automatic transmission models or in an
appropriate gear for manual transmis-
sion models. Failure to do so could
cause the vehicle to move unexpectedly
or roll away and result in an accident.
Make sure the shift lever has been
pushed as far forward as it can go and
cannot be moved without depressing
the foot brake pedal.
cNever leave the engine running while
the vehicle is unattended.
cDo not leave children unattended inside
the vehicle. They could unknowingly ac-
tivate switches or controls. Unattended
children could become involved in seri-
ous accidents.
cIf the ATP lamp is ON, this indicates that
the automatic transmission P (Park) po-
sition will not function and the transfer
control shift lever is in the N (Neutral)
position. Failure to engage the transfer
control lever in the 2H, 4H or 4L position
could result in the vehicle moving unex-
pectedly, resulting in serious personal
injury or property damage.
1. Firmly apply the parking brake.
WSD0050
PARKING/PARKING ON HILLS
5-22Starting and driving
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2.Manual transmission models:
Place the shift lever in the R (Reverse) posi-
tion. When parking on an uphill grade, place
the shift lever in 1st gear.
Automatic transmission models:
Move the shift selector 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.
cHEADED DOWNHILL WITH CURB:
s1
Turn the wheels into the curb and move the
vehicle forward until the curb side wheel
gently touches the curb.
cHEADED UPHILL WITH CURB:
s2
Turn the wheels away from the curb and
move the vehicle back until the curb side
wheel gently touches the curb.
cHEADED UPHILL OR DOWNHILL, NO
CURB:
s3
Turn the wheels toward the side of the road
so the vehicle will move away from the cen-
ter of the road if it moves.
4. Turn the ignition key to the LOCK position
and remove the key.The power assisted steering is designed to use a
hydraulic pump, driven by the engine, to assist
steering.
If the engine stops or the drive belt breaks, you
will still have control of the vehicle. However,
much greater steering effort is needed, especially
in sharp turns and at low speeds.
WARNING
If the engine is not running or is turned off
while driving, the power assist for the
steering will not work. Steering will be
much harder to operate.The brake system has two separate hydraulic
circuits. If one circuit malfunctions, you will still
have braking at two wheels.
BRAKE PRECAUTIONS
Vacuum assisted brakes
The brake booster aids braking by using engine
vacuum. If the engine stops, you can stop the
vehicle by depressing the brake pedal. However,
greater foot pressure on the brake pedal will be
required to stop the vehicle and stopping dis-
tance will be longer.
Using the brakes
Avoid resting your foot on the brake pedal while
driving. This will overheat the brakes, wear out the
brake linings and pads faster, and reduce gas
mileage.
To help reduce brake wear and to prevent the
brakes from overheating, reduce speed and
downshift to a lower gear before going down a
slope or long grade. Overheated brakes may
reduce braking performance and could result in
loss of vehicle control.
POWER STEERING BRAKE SYSTEM
Starting and driving5-23
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WARNING
cWhile driving on a slippery surface, be
careful when braking, accelerating or
downshifting. Abrupt braking or accel-
erating could cause the wheels to skid
and result in an accident.
cIf the engine is not running or is turned
off while driving, the power assist for
the brakes will not work. Braking will be
harder.
Wet brakes
When the vehicle is washed or driven through
water, the brakes may get wet. As a result, your
braking distance will be longer and the vehicle
may pull to one side during braking.
To dry the brakes, drive the vehicle at a safe
speed while lightly pressing the brake pedal to
heat up the brakes. Do this until the brakes return
to normal. Avoid driving the vehicle at high
speeds until the brakes function correctly.
ANTI-LOCK BRAKE SYSTEM (ABS)
The anti-lock brake system controls the brakes at
each wheel so the wheels do not lock when
braking abruptly or when braking on slippery sur-
faces. The system detects the rotation speed at
each wheel and varies the brake fluid pressure toprevent each wheel from locking and sliding. By
preventing wheel lockup, the system helps the
driver maintain steering control and helps to mini-
mize swerving and spinning on slippery surfaces.
Using the system
Depress the brake pedal and hold it down.
WARNING
Do not pump the brake pedal. Doing so
may result in increased stopping
distances.
Normal operation
The anti-lock brake system does not operate at
speeds below3-6MPH(5-10km/h) . (The
speeds vary according to road conditions.)
When driving, the anti-lock brake system con-
trols the wheels so they will not lock when brak-
ing abruptly or when braking on a slippery road.
Thus, difficult steering and swerving of the ve-
hicle due to locked wheels is minimized. The
system detects the wheel rotation rate and elec-
tronically controls the pressure applied to each
brake. Slight vibration on the brake pedal accom-
panied by noise usually occurs while the ABS
system is operating. Such vibration and noise
encountered during abrupt braking is not a prob-
lem, but indicates that the system is functioningproperly. However, the pulsation may indicate
that road conditions are hazardous and extra care
is required while driving.
Self-test feature
The anti-lock brake system consists of electronic
sensors and hydraulic solenoids controlled by 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 pulsa-
tion in the brake pedal. This is normal and is not
an indication of any malfunction. If the computer
senses any malfunction, it switches the anti-lock
brake system off and turns on the ABS brake
warning light on the instrument panel. The brake
system then operates normally, but without anti-
lock assistance.
If a malfunction occurs in the system, the anti-
lock function will not operate, but the standard
vehicle brake system will continue to operate
normally. The ABS brake warning light will then
come on.
If the light comes on during the self-test or while
driving, take the vehicle to a NISSAN dealer for
repair.
5-24Starting and driving
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WARNING
cThe anti-lock brake system is a sophis-
ticated device, but it cannot prevent ac-
cidents resulting from careless or dan-
gerous driving techniques. It can help
maintain vehicle control during braking
on slippery surfaces, but remember that
the stopping distance on slippery sur-
faces will be longer than on normal
surfaces even with the anti-lock brake
system. Stopping distances may also
be longer on rough, gravel or snow cov-
ered roads, or if you are using tire
chains. Tire type and condition may also
affect braking effectiveness. Always
maintain a safe distance from the ve-
hicle in front of you. Ultimately, the re-
sponsibility for safety of self and others
rests in the hands of the driver.
cTire type and condition of tires may also
affect braking effectiveness.
cWhen replacing tires, install the speci-
fied size of tires on all four wheels.cWhen installing a spare tire, make sure
it is the proper size and type as speci-
fied on the tire placard. For tire placard
location information, refer to “Tire plac-
ard” in the “Technical and consumer
information” section of this manual.
cRefer to “Wheels and tires” in the
“Maintenance and do-it-yourself” sec-
tion of this manual.When driving on slippery surfaces or suddenly
avoiding obstacles on roads, the vehicle might
swerve or slip. With the Vehicle Dynamic Control
(VDC) system, sensors detect these movements
and control the braking and engine output to help
improve vehicle stability while driving.
cWhen the vehicle dynamic control system is
operating, the slip indicator in the instrument
panel blinks.
cWhen only the traction control system por-
tion of the vehicle dynamic control system is
operating, the slip indicator will also blink.
cIf the slip indicator blinks, the vehicle is un-
der slippery conditions. Be sure to drive
carefully. See “Slip indicator light”, and “Ve-
hicle dynamic control off indicator light” in
the “Instruments and controls” section.
cIndicator light
If malfunction occurs in the system, theandindicator lights come on in the
instrument panel.
As long as these warning lights are on, the
traction control function is canceled.
The VDC system uses a Brake Limited Slip Dif-
ferential (LSD) system to improve vehicle trac-
tion. The brake LSD system works when one of
the driving wheels is spinning on a slippery sur-
face. The brake LSD system brakes the spinning
VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM (if so equipped)
Starting and driving5-25
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wheel which distributes the driving power to the
other drive wheel. If the vehicle is operated with
the vehicle dynamic control system off, all VDC
and TCS functions will be turned off. The brake
LSD system and ABS will still operate with the
VDC system OFF. If the brake LSD system or the
ABS is activated, the slip indicator light will blink
and you may hear a clunk noise and/or feel a
pulsation in the brake pedal. This is normal.
While the VDC system is operating, you may feel
a pulsation in the brake pedal and hear a noise or
vibration from under the hood. This is normal and
indicates that the VDC system is working prop-
erly.
The computer has a built in diagnostic feature
that tests the system each time you start the
engine and move the vehicle forward 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
indication of a malfunction.WARNING
cThe vehicle dynamic control system is
designed to help improve driving stabil-
ity 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
driving and cornering on slippery sur-
faces and always drive carefully.
cIf suspension parts such as shock ab-
sorbers, struts, springs and bushings
are not standard equipment or are ex-
tremely deteriorated, the vehicle dy-
namic control off indicator light may
come on.
cWhen driving on extremely inclined sur-
faces such as higher banked corners,
the vehicle dynamic control system may
not operate properly or the vehicle dy-
namic control off indicator light may
come on. Do not drive on these types of
roads.
cIf the tires other than the recommended
ones are used, the vehicle dynamic con-
trol system may not operate properly or
the vehicle dynamic control off indica-
tor light may come on.cThe vehicle dynamic control system is
not a substitute for winter tires or tire
chains on a snow covered road.
5-26Starting and driving
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