engine NISSAN SENTRA 2023 Service Manual

FUEL-FILLER CAP
WARNING
• Gasoline is extremely flammable and
highly explosive under certain condi-
tions. You could be burned or seri-
ously injured if it is misused or mis-
handled. Always stop the engine and
do not smoke or allow open flames or
sparks near the vehicle when
refueling.
• Do not attempt to top off the fuel
tank af ter the fuel pump nozzle
shuts off automatically. Continued
refueling may cause fuel overflow,
resulting in fuel spray and possibly a
fire.
• Use only an original equipment type
fuel-filler cap as a replacement. It has
a built-in safety valve needed for
proper operation of the fuel system
and emission control system. An in-
correct cap can result in a serious
malfunction and possible injury. It
could also cause the
Malfunc-
tion Indicator Light (MIL) to come on.
• Never pour fuel into the throttle body
to attempt to start your vehicle. •
Do not fill a portable fuel container in
the vehicle or trailer. Static electricity
can cause an explosion of flammable
liquid, vapor or gas in any vehicle or
trailer. To reduce the risk of serious
injury or death when filling portable
fuel containers:
– Always place the container on the
ground when filling.
– Do not use electronic devices
when filling.
– Keep the pump nozzle in contact
with the container while you are
filling it.
– Use only approved portable fuel
containers for flammable liquid.
CAUTION
• Do not use E–15 or E–85 fuel in your
vehicle. For additional information,
see “Fuel recommendation” (P. 10-4). •
The LOOSE FUEL CAP warning mes-
sage will appear if the fuel-filler cap
is not properly tightened. It may take
a few driving trips for the message to
be displayed. Failure to tighten the
fuel-filler cap properly af ter the
LOOSE FUEL CAP warning message
appears may cause the
Mal-
function Indicator Light (MIL) to
illuminate.
• Failure to tighten the fuel-filler cap
properly may cause the
Mal-
function Indicator Light (MIL) to illu-
minate. If the
light illuminates
because the fuel-filler cap is loose or
missing, tighten or install the cap and
continue to drive the vehicle. The
light should turn off af ter a few
driving trips. If thelight does not
turn off af ter a few driving trips, have
the vehicle inspected. It is recom-
mended that you visit a NISSAN
dealer for this service.
• For additional information, see “Mal-
function Indicator Light (MIL)”
(P. 2-11).
• If fuel is spilled on the vehicle body,
flush it away with water to avoid
paint damage.
3-24Pre-driving checks and adjustments

1. Display screen
2. TUNE·SCROLL knob /PUSH SOUND button
3.
BACK button
4. DISP button 5.
button*
6.
MENU button
7.
(brightness control) button
8. VOL (volume) knob / PUSH
(power) button * For additional information regarding the
Bluetooth® Hands-Free Phone System
control button, see “Bluetooth® Hands-
Free Phone System” (P. 4-66).
When you use this system, make sure the
engine is running.
If you use the system with the engine not
running for a long time, it will discharge
the battery, and the engine will not start.
Reference symbols:
“Example” — Words marked in quotes refer
to a key shown only on the display. These
keys can be selected by touching the
screen.
LHA4960
CONTROL PANEL BUTTONS
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object when backing up to the positionOA
if the object projects over the actual back-
ing up course.
HOW TO PARK WITH PREDICTED
COURSE LINES (if so equipped)
WARNING
• If the tires are replaced with different
sized tires, the predicted course lines
may be displayed incorrectly.
• On a snow-covered or slippery road,
there may be a difference between
the predicted course line and the ac-
tual course line.
• If the battery is disconnected or be-
comes discharged, the predicted
course lines may be displayed incor-
rectly. If this occurs, please perform
the following procedures:
– Turn the steering wheel from lock
to lock while the engine is
running.
– Drive the vehicle on a straight road
for more than 5 minutes.
• When the steering wheel is turned
with the ignition switch in the ACC
position, the predicted course lines
may be displayed incorrectly. 1. Visually check that the parking space is
safe before parking your vehicle.
2. The rear view of the vehicle is displayed on the screen
OAwhen the shif t lever is
moved to the R (Reverse) position. 3. Slowly back up the vehicle adjusting the
steering wheel so that the predicted
course lines
OBenter the parking space
OC.
LHA5043LHA4770
4-12Monitor, climate, audio, phone and voice recognition systems

Backing up behind a projecting
object
The positionOCis shown farther than the
position
OBin the display. However, the po-
sition
OCis actually at the same distance as
the position
OA. The vehicle may hit the object when backing up to the position
OA
if the object projects over the actual back-
ing up course.
HOW TO PARK WITH PREDICTED
COURSE LINES
WARNING
• If the tires are replaced with different
sized tires, the predicted course lines
may be displayed incorrectly.
• On a snow-covered or slippery road,
there may be a difference between
the predicted course line and the ac-
tual course line.
• If the battery is disconnected or be-
comes discharged, the predicted
course lines may be displayed incor-
rectly. If this occurs, please perform
the following procedures:
– Turn the steering wheel from lock
to lock while the engine is
running.
– Drive the vehicle on a straight road
for more than 5 minutes.
• When the steering wheel is turned
with the ignition switch in the ACC
position, the predicted course lines
may be displayed incorrectly. 1. Visually check that the parking space is
safe before parking your vehicle.
2. The rear view of the vehicle is displayed on the screen
OAwhen the shif t lever is
moved to the R (Reverse) position.
LHA5324LHA5043
4-22Monitor, climate, audio, phone and voice recognition systems

1.Fan speed control dial
2.Heated seat switches (if so
equipped)
3.
Front defroster button
4.Rear window and outside mirror
(if so equipped) defroster switch 5.
Air recirculation button
6. MAX A/C / temperature control dial
7. Air flow control buttons
8. A/C (air conditioner) button
WARNING
• The air conditioner cooling function
operates only when the engine is
running.
• Do not leave children or adults who
would normally require the assis-
tance of others alone in your vehicle.
Pets should also not be lef t alone.
They could accidentally injure them-
selves or others through inadvertent
operation of the vehicle. Also, on hot,
sunny days, temperatures in a closed
vehicle could quickly become high
enough to cause severe or possibly
fatal injuries to people or animals.
• Do not use the recirculation mode for
long periods as it may cause the inte-
rior air to become stale and the win-
dows to fog up.
NOTE:
• Odors from inside and outside the ve- hicle can build up in the air conditioner
unit. Odor can enter the passenger
compartment through the vents.
• When parking, set the heater and air conditioner controls to turn off air re-
circulation to allow fresh air into the
passenger compartment. This should
help reduce odors inside the vehicle.LHA4783
HEATER AND AIR CONDITIONER
(manual) (if so equipped)
4-32Monitor, climate, audio, phone and voice recognition systems

CONTROLS
Fan speed control dial
Thefan speed control dial turns the
fan on and off and controls fan speed.
Air flow control buttons
The air flow control buttons allow you to
select the air flow outlets.
— Air flows from center and side
vents.
— Air flows from center and sidevents and foot outlets.
— Air flows mainly from foot outlets.— Air flows from defroster outletsand foot outlets.
— Air flows mainly from defrosteroutlets.
Temperature control dial
The temperature control dial allows you to
adjust the temperature of the outlet air. To
lower the temperature, turn the dial to the
lef t. To increase the temperature, turn the
dial to the right.
Turn the dial to the MAX A/C position for
maximum cooling. Air will flow from center
and side vents. MAX A/C is an automatic change to recir-
culate, A/C on and vent mode to improve
A/C performance.
Air recirculation button
On position (Indicator light on):
Interior air is recirculated inside the vehicle.
Press the
button to the ON position
when:
• driving on a dusty road.
• to prevent traffic fumes from entering passenger compartment.
• for maximum cooling when using the air conditioner.
Off position (Indicator light off ):
Outside air is drawn into the passenger
compartment and distributed through the
selected outlet.
Use the off position for normal heater or air
conditioner operation.
A/C (air conditioner) button
Start the engine, turn thefan speed
control dial to the desired position and
press the
button to turn on the air
conditioner. To turn off the air conditioner,
press the
button again. The air conditioner cooling function op-
erates only when the engine is running.
Rear window and outside mirror
(if so equipped) defroster switch
For additional information, see “Rear win-
dow and outside mirror (if so equipped)
defroster switch” (P. 2-51).
Heated seat switches (if so
equipped)
For additional information, see “Heated
seat switches” (P. 2-60).
HEATER OPERATION
Heating
This mode is used to direct heated air to
the foot outlets. Some air also flows from
the defrost outlets and the side vent
outlets.
1. Press the
button to the off position
for normal heating.
2. Press the
air flow control button.
3. Turn the
fan speed control dial to
the desired position.
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AIR CONDITIONER OPERATION
Start the engine, turn thefan speed
control dial to the desired position, and
press the
button to activate the air
conditioner. When the air conditioner is on,
cooling and dehumidif ying functions are
added to the heater operation.
The air conditioner cooling function op-
erates only when the engine is running.
Cooling
This mode is used to cool and dehumidif y
the air.
1. Press the
button to the off position.
2. Press the
air flow control button.
3. Turn the
fan speed control dial to
the desired position.
4. Press the A/C button. The indicator light comes on.
5. Turn the temperature control dial to the desired position.
• For quick cooling when the outside tem- perature is high, press the
button to
the ON position. Be sure to return the
to the off position for normal cooling.
MAX A/C may be used for quick cooling.
Dehumidified heating
This mode is used to heat and dehumidif y
the air.
1. Press the
button to the off position.
2. Press the
air flow control button.
3. Turn the
fan speed control dial to
the desired position.
4. Press the A/C (air conditioner) button. The indicator light comes on.
5. Turn the temperature control dial to the desired position.
Dehumidified defogging
This mode is used to defog the windows
and dehumidif y the air.
1. Press the
air flow control button.
2. Turn the
fan speed control dial to
the desired position. • When the
orare selected, the
air conditioner automatically turns on if
the outside temperature is more than
36°F (2°C). This dehumidifies the air which
helps defog the windshield. The
mode automatically turns off, allowing
outside air to be drawn into the passen-
ger compartment to further improve the
defogging performance.
3. Turn the temperature control dial to the desired position.
Operating tips
• Keep the windows closed while the airconditioner is in operation.
• Af ter parking in the sun, drive for 2 or 3 minutes with the windows open to vent
hot air from the passenger compart-
ment. Then, close the windows. This al-
lows the air conditioner to cool the inte-
rior more quickly.
• The air conditioning system should be operated for approximately 10 minutes at
least once a month. This helps prevent
damage to the system due to lack of
lubrication.
• A visible mist may be seen coming from the ventilators in hot, humid conditions
as the air is cooled rapidly. This does not
indicate a malfunction.
Monitor, climate, audio, phone and voice recognition systems4-35

• If the engine coolant temperature gaugeindicates engine coolant temperature
over the normal range, turn the air condi-
tioner off. For additional information, see
“If your vehicle overheats” (P. 6-11).
• When Remote Engine Start (if so equipped) is activated, the manual cli-
mate control system will default to the
last used heating or cooling mode.
AIR FLOW CHARTS
The following charts show the button and
dial positions for MAXIMUM AND QUICK
heating, cooling or defrosting. The
air
recirculation button should always be in
the off position for heating and
defrosting.
LHA5330
4-36Monitor, climate, audio, phone and voice recognition systems

1. AUTO (automatic) climate control but-ton / temperature control dial (driver’s
side)
2. Display screen
3.
Heated seat switches (if so
equipped) 4. SYNC button / temperature control dial
(passenger’s side)
5. A/C (air conditioner) button
6.Air recirculation button
7.Air flow control button
8.Fan speed control buttons
9.Heated steering wheel switch (if
so equipped) 10.
Rear window and outside mirror
(if so equipped) defroster switch
11.
Front defroster button
12. ON-OFF button
WARNING
• The air conditioner cooling function
operates only when the engine is
running.
• Do not leave children or adults who
would normally require the assis-
tance of others alone in your vehicle.
Pets should also not be lef t alone.
They could accidentally injure them-
selves or others through inadvertent
operation of the vehicle. Also, on hot,
sunny days, temperatures in a closed
vehicle could quickly become high
enough to cause severe or possibly
fatal injuries to people or animals.
• Do not use the recirculation mode for
long periods as it may cause the inte-
rior air to become stale and the win-
dows to fog up.
Start the engine and operate the controls
to activate the air conditioner.
LHA4784
HEATER AND AIR CONDITIONER
(automatic) (if so equipped)
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Remote Engine Start with
Intelligent Climate Control (if so
equipped)
Vehicles equipped with automatic climate
controls and Remote Engine Start function
may go into automatic heating or cooling
mode when Remote Engine Start is acti-
vated depending on outside and cabin
temperatures. During this period, the cli-
mate control display and buttons will be
inoperable until the ignition switch is
turned on. In Remote Engine Start defrost-
ing mode, the rear window defroster (if so
equipped), heated seats (if so equipped)
and heated steering wheel (if so equipped)
may be activated automatically.
MANUAL OPERATION
Fan speed control buttons
Press thefan speed control buttons
to manually control the fan speed.
Press the AUTO button to return to auto-
matic control of the fan speed.
Temperature control dial
The temperature control dial allows you to
adjust the temperature of the outlet air. To
lower the temperature, turn the dial to the
lef t. To increase the temperature, turn the
dial to the right. Temperature can be ad-
justed on the driver’s and passenger’s side.
Air recirculation
Press theair recirculation button to
recirculate interior air inside the vehicle.
The
indicator light on the button will
come on.
The air recirculation cannot be activated
when the air conditioner is in the
front
defrosting mode.
When the outside temperature exceeds
70°F (21°C), the air conditioning system may
default to air recirculation mode automati-
cally to reduce overall power consumption.
To exit air recirculation mode, deselect the
air recirculation button (indicator light will
turn off ) to enter fresh air mode.
Automatic intake air control
In the AUTO mode, the intake air will be
controlled automatically. To manually con-
trol the intake air, press the
air recir-
culation button. To return to the automatic control mode, press and hold the
air
recirculation button for about 2 seconds.
The indicator light will flash twice, and then
the intake air will be controlled
automatically.
A/C (air conditioner) button
Start the engine, press thefan speed
control buttons to the desired position and
press the
button to turn on the air
conditioner. To turn off the air conditioner,
press the
button again.
The air conditioner cooling function op-
erates only when the engine is running.
Air flow control
Pressing thebutton manually con-
trols air flow and selects the air outlet:
— Air flows from center and side
vents.
— Air flows from center and sidevents and foot outlets.
— Air flows mainly from the footoutlets.
— Air flows from defroster and footoutlets.
Monitor, climate, audio, phone and voice recognition systems4-41