2021 NISSAN TITAN engine

HOW TO ENABLE/DISABLE THE
INTELLIGENT DRIVER ALERTNESS
(I-DA) SYSTEM
Perform the following steps to enable or
disable the I–DA system.
1. Press the
button until “Settings” dis-
plays in the vehicle information display.
Use the
button to select “Driver As-
sistance.” Then press the ENTER button.
2. Select “Driver Attention” and press the ENTER button to turn the system on or
off.
NOTE:
The setting will be retained even if
the engine is restarted.
INTELLIGENT DRIVER ALERTNESS
(I-DA) SYSTEM LIMITATIONS
WARNING
Listed below are the system limitations
for the I–DA system. Failure to operate
the vehicle in accordance with these
system limitations could result in seri-
ous injury or death.
• The I-DA system may not operate
properly and may not provide an
alert in the following conditions:
– Poor road conditions such as an
uneven road surface or pot holes.
– Strong side wind.
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–If you have adopted a sporty driv-
ing style with higher cornering
speeds or higher rates of
acceleration.
– Frequent lane changes or
changes to vehicle speed.
• The I–DA system will not provide an
alert in the following conditions:
– Vehicle speeds lower than 37 mph
(60 km/h).
– Short lapses of attention.
– Instantaneous distractions such
as dropping an object.
System malfunction
If the Intelligent Driver Alertness system
malfunctions, the system warning mes-
sage will appear in the vehicle information
display and the function will be stopped
automatically.
Action to take
Stop the vehicle in a safe location, place the
vehicle in P (Park) position, turn the engine off
and restart the engine. If the system warning
message continues to appear, have the sys-
tem checked. It is recommended that you
visit a NISSAN dealer for this service.
CAUTION
During the first 1,200 miles (2,000 km),
follow these recommendations to ob-
tain maximum engine performance
and ensure the future reliability and
economy of your new vehicle. Failure to
follow these recommendations may
result in shortened engine life and re-
duced engine performance.
• Avoid driving for long periods at constant speed, either fast or slow, and do not run
the engine over 4,000 rpm.
• Do not accelerate at full throttle in any gear.
• Avoid quick starts.
• Avoid hard braking as much as possible.
• Do not tow a trailer for the first 500 miles (805 kilometers). Your engine, axle or
other parts could be damaged.
LIC3125
BREAK-IN SCHEDULE
Starting and driving5-103

Follow these easy-to-use Fuel Efficient
Driving Tips to help you achieve the most
fuel economy from your vehicle.
1.Use Smooth Accelerator and Brake
Pedal Application
• Avoid rapid starts and stops.
• Use smooth, gentle accelerator and brake application whenever possible.
• Maintain constant speed while com- muting and coast whenever possible.
2. Maintain Constant Speed
• Look ahead to try and anticipate and minimize stops.
• Synchronizing your speed with traffic lights allows you to reduce your num-
ber of stops.
• Maintaining a steady speed can mini- mize red light stops and improve fuel
efficiency.
3. Use Air Conditioning (A/C) at Higher
Vehicle Speeds
• Below 40 mph (64 km/h), it is more efficient to open windows to cool the
vehicle due to reduced engine load.
• Above 40 mph (64 km/h), it is more efficient to use A/C to cool the vehicle
due to increased aerodynamic drag. • Recirculating the cool air in the cabin
when the A/C is on reduces cooling
load.
4. Drive at Economical Speeds and
Distances
• Observing the speed limit and not ex- ceeding 60 mph (97 km/h) (where le-
gally allowed) can improve fuel effi-
ciency due to reduced aerodynamic
drag.
• Maintaining a safe following distance behind other vehicles reduces unnec-
essary braking.
• Safely monitoring traffic to anticipate changes in speed permits reduced
braking and smooth acceleration
changes.
• Select a gear range suitable to road conditions.
5. Use Cruise Control
• Using cruise control during highway driving helps maintain a steady speed.
• Cruise control is particularly effective in providing fuel savings when driving
on flat terrains.
6. Plan for the Shortest Route
• Utilize a map or navigation system to determine the best route to save time. 7.
Avoid Idling
• Shutting off your engine when safe for stops exceeding 30–60 seconds saves
fuel and reduces emissions.
8. Buy an Automated Pass for Toll Roads
• Automated passes permit drivers to use special lanes to maintain cruising
speed through the toll and avoid stop-
ping and starting.
9. Winter Warm Up
• Limit idling time to minimize impact to fuel economy.
• Vehicles typically need no more than 30 seconds of idling at start-up to ef-
fectively circulate the engine oil before
driving.
• Your vehicle will reach its ideal operat- ing temperature more quickly while
driving versus idling.
10. Keeping your Vehicle Cool
• Park your vehicle in a covered parking area or in the shade whenever pos-
sible.
• When entering a hot vehicle, opening the windows will help to reduce the
inside temperature faster, resulting in
reduced demand on your A/C system.
FUEL EFFICIENT DRIVING TIPS
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• 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, see “Engine
oil and oil filter recommendations”
(P. 10-7).
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 vehicle information dis-
play warning message turns on
when you are driving on dry hard sur-
face roads:
– In the 4H position, shif t the 4WD
shif t switch to 2WD.
– In the 4LO position, stop the ve-
hicle, move 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 vehicle information display
warning message 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 ECONOMY USING 4–WHEEL DRIVE (4WD) (if so
equipped)
Starting and driving5-105

*1: Before moving the shif t lever from N (Neutral), wait until the 4LO indicator 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 transfer gear may grind, not engage
correctly or stay in the N (Neutral) position.
- If the 4WD vehicle information display warning message illuminates, perform the following procedure to return the transfer case to the correct oper ating
condition.
1. Turn off the engine by placing the ignition switch in the OFF position.
2. Start the engine.
- Check that the 4WD vehicle information display warning message turns off. If the warning message in the vehicle information display stays on, have th e
system checked. It is recommended that you visit a NISSAN dealer for this service.
3. Apply the parking brake, depress the brake pedal and move the shif t lever to the 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 fo rthe
4WD shif t and 4LO position indicators to be operable. Otherwise, the shif t will not take place and no indicators will be on or flashing.
*3: Make sure the transfer 4LO position indicator 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, see “Vehicle Dynamic Control (VDC) system” (P. 5-118).
Starting and driving5-107

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 pushed and
turned to select 4LO.
WARNING
• When parking, apply the parking
brake before stopping the engine
and make sure that the 4WD shif t
indicator is on and the Automatic
Transmission Park (ATP) warning
light goes off. Otherwise, the vehicle
could unexpectedly move even if the
A/T is in the P (Park) position. •
The 4LO indicator 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 is blink-
ing, 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 trac-
tion. Avoid excessive speed, as it will
cause increased fuel consumption
and higher oil temperatures, and
could damage drivetrain components.
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 A/T gears (M1 or
M2) 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 may
blink even when the 4WD shif t switch
is shif ted. Af ter driving for a while
you can change the 4WD transfer
case between 4H and 4LO.
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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.
• Place stones or wooden blocks under the tires to free the vehicle.
• Use the Electronic locking rear differential (E-Lock) system (if so equipped). For addi-
tional information, see “Electronic locking
rear differential (E-lock) system” (P. 5-112).
• If it is difficult to free the vehicle, rock the vehicle back and forth between reverse
and 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
• Do not spin the tires excessively. Tires
will sink deep into the mud, making it
difficult to free the vehicle.
• Avoid shif ting gears with the engine
running at high speeds as this may
cause malfunction.
4WD shif t switch operations
• Shif t the 4WD shif t switch to either the 2WD, 4H or 4LO position, depending on
driving conditions.
• If the 4WD shif t switch is operated
while making a turn, accelerating or
decelerating or if the key switch is
turned off while in the 4H or 4LO, you
may feel a jolt. This is not abnormal.
• You may hear some noise as the sys-
tem shif ts or engages. This is not ab-
normal.
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.
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4WD shif t indicator
The 4WD shif t indicator is located in the
vehicle information display.
While the engine is running, the 4WD shif t
indicator will illuminate the position se-
lected by the 4WD shif t switch.
•The 4WD shif t indicator may come on
while shif ting from one drive mode to
the other. When the shif ting is com-
pleted, the 4WD shif t indicator will stay
on.
• If the 4WD vehicle information display warning message comes on, the 4WD in-
dicator goes out.
CAUTION
• If the 4WD shif t indicator indication
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
indicator does not return to normal
and the 4WD vehicle information dis-
play warning message comes on,
have the system checked. It is recom-
mended that you visit a NISSAN
dealer for this service.
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