warning NISSAN TITAN 2021 Owner´s Manual

SYSTEM TEMPORARILY
UNAVAILABLE
Condition A
When the radar sensor picks up interfer-
ence from another radar source, making it
impossible to detect a vehicle ahead, the
I-FCW system is automatically turned off.
The AEB with Pedestrian Detection system
warning light (orange) will illuminate.
Action to take
When the above conditions no longer exist,
the I-FCW system will resume automati-
cally.
Condition B
When the radar sensor of the front bumper
is covered with dirt or is obstructed, the
I-FCW system will automatically be can-
celed. The chime will sound and the “For-
ward Driving Aids temporarily disabled
Front Radar Blocked See Owner’s Manual”
warning message will appear in the vehicle
information display.
Action to take:
If the warning message appears, stop the
vehicle in a safe place, place the shif t lever
in the P (Park) position, and turn the engine
off. When the radar signal is temporarily
interrupted, clean the sensor area of the
front bumper and restart the engine. If the
“Forward Driving Aids temporarily disabled
LSD3727
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Front Radar Blocked See Owner’s Manual”
warning message continues to be dis-
played, have the system checked. It is rec-
ommended that you visit a NISSAN dealer
for this service.
Condition C
When driving on roads with limited road
structures or buildings (for example, long
bridges, deserts, snowfields, driving next to
long walls), the system may illuminate the
system warning light and display the “For-
ward Driving Aids temporarily disabled
Front Radar Blocked See Owner’s Manual”
message.
Action to take:
When the above driving conditions no lon-
ger exist, turn the system back on.
NOTE:
If the AEB with Pedestrian Detection sys-
tem stops working, the I-FCW system will
also stop working.
SYSTEM MALFUNCTION
If the I-FCW system malfunctions, it will be
turned off automatically, a chime will
sound, the AEB with Pedestrian Detection
system warning light (orange) will illumi-
nate and the warning message [Malfunc-
tion] will appear in the vehicle information
display.
Action to take
If the warning light (orange) comes on, stop
the vehicle in a safe location, turn the en-
gine off and restart the engine. If the warn-
ing light continues to illuminate, have the
I-FCW system checked. It is recommended
that you visit a NISSAN dealer for this ser-
vice.
SYSTEM MAINTENANCE
The sensorO1is located on the front of the
vehicle.
To keep the system operating properly, be
sure to observe the following:
• Always keep the sensor area of the front bumper clean.
• Do not strike or damage the areas around the sensor.
• Do not cover or attach stickers or similar objects on the front bumper near the
sensor area. This could cause failure or
malfunction.
LSD3712
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WARNING
Failure to follow the warnings and in-
structions for proper use of the I-DA
system could result in serious injury or
death.
• The I–DA system is only a warning to
inform the driver of a potential lack
of driver attention or drowsiness. It
will not steer the vehicle or prevent
loss of control.
• The I–DA system does not detect and
provide an alert of the driver’s lack of
attention or fatigue in every
situation.
• It is the driver’s responsibility to:
– stay alert,
– drive safely,
– keep the vehicle in the traveling lane,
– be in control of the vehicle at all times,
– avoid driving when tired,
– avoid distractions (texting, etc). The I–DA system helps alert the driver if the
system detects a lack of attention or driv-
ing fatigue.
The system monitors driving style and
steering behavior over a period of time,
and it detects changes from the normal
pattern. If the system detects that driver
attention is decreasing over a period of
time, the system uses audible and visual
warnings to suggest that the driver take a
break.
INTELLIGENT DRIVER ALERTNESS
SYSTEM OPERATION
If the system detects driver fatigue or that
driver attention is decreasing, the mes-
sage “Take a break?” appears in the vehicle
information display and a chime sounds
when the vehicle is driven at speeds above
37 mph (60 km/h).
The system continuously monitors driver
attention and can provide multiple warn-
ings per trip.
The system resets and starts reassessing
driving style and steering behavior when the
ignition switch is cycled from the ON to the
OFF position and back to the ON position.
LSD3735
INTELLIGENT DRIVER ALERTNESS
(I-DA)
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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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5-102Starting and driving

–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
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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)
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*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.
5-108Starting and driving

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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Warning message
Warning messageWarning message comes on when:
Vehicle information display
4WD Error: See Owner’s Manual There is a malfunction in the 4–Wheel Drive system
FRT & RR tire size difference: See Owner’s Manual The difference in wheel rotation is large
CAUTION
• If the warning message comes on
during operation or rapidly af ter
stopping the vehicle for a while, have
your vehicle checked as soon as pos-
sible. It is recommended that you
visit a NISSAN dealer for this service.
• Shif ting between 4H and 4LO is not
recommended when the 4WD warn-
ing message turns on.
• When the warning message comes
on, the 2WD mode may be engaged
even if the 4WD shif t switch is in 4H.
Be especially careful when driving. If
corresponding parts are malfunc-
tioning, the 4WD mode will not be en-
gaged even if the 4WD shif t switch is
shif ted.
• 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 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.
Starting and driving5-111