engine NISSAN SENTRA 2023 Workshop Manual

• When the climate system is in automaticoperation and the engine coolant tem-
perature and outside air temperature are
low, the air flow outlet may default to de-
froster mode for a maximum of 2 min-
utes 30 seconds. This is not a malfunc-
tion. Af ter the engine coolant
temperature warms up, the air flow outlet
will return to foot mode and operation will
continue normally.
• When the outside and interior cabin tem- peratures are moderate to high, the in-
take setting may default to turn off air
recirculation to allow fresh air into the
passenger compartment. You may no-
tice air flow from the foot mode, bi-level
mode, or side demist vent outlets for a
maximum of 15 seconds. This may occur
when the previous climate setting was
turned off. This is not a malfunction. Af ter
the initial warm air is expelled, the intake
will return to automatic control, the air
flow outlet will return to previous settings,
and operation will continue normally. To
exit, press any climate control button.
• Keep the moonroof (if so equipped) closed while the air conditioner is in
operation. • If you feel that the air flow mode you have
selected and the outlets the air is coming
out do not match, select the
mode.
• When you change the air flow mode, you may feel air flow from the foot outlets for
just a moment. This is not a malfunction. The air conditioner system in your NISSAN
vehicle is charged with a refrigerant de-
signed with the environment in mind.
This refrigerant does not harm the
earth's ozone layer.
Special charging equipment and lubricant
is required when servicing your NISSAN air
conditioner. Using improper refrigerants or
lubricants will cause severe damage to
your air conditioner system. For additional
information, see “Air conditioner system re-
frigerant and oil recommendations”
(P. 10-8).
It is recommended that you visit a NISSAN
dealer to service your “environmentally
friendly” air conditioning system.
WARNING
The air conditioner system contains re-
frigerant under high pressure. To avoid
personal injury, any air conditioner ser-
vice should be done only by an experi-
enced technician with proper
equipment.
SERVICING AIR CONDITIONER
Monitor, climate, audio, phone and voice recognition systems4-43

RADIO
Place the ignition switch in the ACC or ON
position and press the PUSHbutton
to turn the radio on. If you listen to the radio
with the engine not running, the ignition
switch should be placed in the ACC
position.
Radio reception is affected by station sig-
nal strength, distance from radio transmit-
ter, buildings, bridges, mountains and other
external influences. Intermittent changes
in reception quality normally are caused by
these external influences.
Using a cellular phone in or near the ve-
hicle may influence radio reception
quality.
Radio reception
Your NISSAN radio system is equipped with
state-of-the-art electronic circuits to en-
hance radio reception. These circuits are
designed to extend reception range, and to
enhance the quality of that reception.
However, there are some general charac-
teristics of both FM and AM radio signals
that can affect radio reception quality in a
moving vehicle, even when the finest
equipment is used. These characteristics
are completely normal in a given reception area and do not indicate any malfunction
in your NISSAN radio system.
Reception conditions will constantly
change because of vehicle movement.
Buildings, terrain, signal distance and inter-
ference from other vehicles can work
against ideal reception. Described below
are some of the factors that can affect your
radio reception.
Some cellular phones or other devices may
cause interference or a buzzing noise to
come from the audio system speakers.
Storing the device in a different location
may reduce or eliminate the noise.
FM RADIO RECEPTION
Range: FM range is normally limited to 25 –
30 mi (40 – 48 km), with monaural (single
channel) FM having slightly more range
than stereo FM. External influences may
sometimes interfere with FM station re-
ception even if the FM station is within 25
mi (40 km). The strength of the FM signal is
directly related to the distance between
the transmitter and receiver. FM signals fol-
low a line-of-sight path, exhibiting many of
the same characteristics as light. For ex-
ample, they will reflect off objects.
Fade and drif t: As your vehicle moves away
from a station transmitter, the signals will
tend to fade and/or drif t.
Static and flutter: During signal interfer-
ence from buildings, large hills or due to
antenna position (usually in conjunction
with increased distance from the station
transmitter), static or flutter can be heard.
This can be reduced by adjusting the treble
control to reduce treble response.
Multipath reception: Because of the reflec-
tive characteristics of FM signals, direct and
reflected signals reach the receiver at the
same time. The signals may cancel each
other, resulting in momentary flutter or loss
of sound.AM RADIO RECEPTION
AM signals, because of their low frequency,
can bend around objects and skip along
the ground. In addition, the signals can be
bounced off the ionosphere and bent back
to earth. Because of these characteristics,
AM signals are also subject to interference
as they travel from transmitter to receiver.
AUDIO SYSTEM
4-44Monitor, climate, audio, phone and voice recognition systems

When installing a CB, ham radio or car
phone in your vehicle, be sure to observe
the following precautions; otherwise, the
new equipment may adversely affect the
engine control system and other electronic
parts.
WARNING
• A cellular phone should not be used
for any purpose while driving so full
attention may be given to vehicle op-
eration. Some jurisdictions prohibit
the use of cellular phones while
driving.
• If you must make a call while your
vehicle is in motion, the hands free
cellular phone operational mode (if
so equipped) is highly recom-
mended. Exercise extreme caution at
all times so full attention may be
given to vehicle operation.
• If you are unable to devote full atten-
tion to vehicle operation while talk-
ing on the phone, pull off the road to
a safe location and stop your vehicle.
CAUTION
• Keep the antenna as far away as pos-
sible from the electronic control
modules.
• Keep the antenna wire more than 8 in
(20 cm) away from the electronic
control system harnesses. Do not
route the antenna wire next to any
harness.
• Adjust the antenna standing-wave
ratio as recommended by the
manufacturer.
• Connect the ground wire from the CB
radio chassis to the body.
• For additional information, it is rec-
ommended that you visit a NISSAN
dealer for this service.WARNING
• Use a phone af ter stopping your ve-
hicle in a safe location. If you have to
use a phone while driving, exercise
extreme caution at all times so full
attention may be given to vehicle
operation.
• If you are unable to devote full atten-
tion to vehicle operation while talk-
ing on the phone, pull off the road to
a safe location and stop your vehicle.
CAUTION
To avoid discharging the vehicle bat-
tery, use a phone af ter starting the
engine.
CAR PHONE OR CB RADIO BLUETOOTH® HANDS-FREE PHONE
SYSTEM
4-66Monitor, climate, audio, phone and voice recognition systems

5 Starting and driving
Precautions when starting and driving..........5-4
Exhaust gas (carbon monoxide) ..............5-4
Three-way catalyst ...........................5-4
Tire Pressure Monitoring System
(TPMS) .......................................5-5
Avoiding collision and rollover ................5-9
Off-roadrecovery ............................5-9
Rapid air pressure loss .......................5-9
Drinking alcohol/drugs and driving ..........5-10
Push-button ignition switch .....................5-11
Operating range ............................ 5-12
Push-button ignition switch positions .......5-12
Emergency engine shut off ..................5-13
NISSAN Intelligent Key® battery
discharge ................................... 5-13
NISSAN Vehicle Immobilizer System .........5-14
Before starting the engine .....................5-14
Starting the engine ............................. 5-14
Remote Engine Start (if so equipped) ........5-15
Driving the vehicle .............................. 5-16
Continuously Variable Transmission
(CVT) (if so equipped) ........................ 5-16
Manual transmission (if so equipped) ........5-21
Parking brake .................................. 5-22
Hand type (if so equipped) ...................5-23
Pedal type (if so equipped) ..................5-23ECO mode switch
.............................. 5-24
Shif t lever indicator (2.0L 4 cylinder
(MR20DD engine model) Manual
Transmission models only)
(if so equipped) .............................. 5-24
Traffic Sign Recognition (TSR) (if so equipped) . . . 5-25 System operation ........................... 5-26
Turning the Traffic Sign Recognition
(TSR) system on and off .....................5-27
System temporarily unavailable .............5-28
System malfunction ......................... 5-28
System maintenance .......................5-28
Lane Departure Warning (LDW) .................5-29
LDW system operation ......................5-30
How to enable/disable the LDW system .....5-32
LDW system limitations .....................5-33
System temporarily unavailable .............5-34
System malfunction ......................... 5-35
System maintenance .......................5-35
Blind Spot Warning (BSW) .......................5-36
BS
W system operation ...................... 5-38
How to enable/disable the BSW system .....5-39
BSW system limitations .....................5-41
BSW driving situations .......................5-42
System temporarily unavailable .............5-45
System maintenance .......................5-47

Intelligent Driver Alertness (I-DA)...............5-121
Intelligent Driver Alertness system
operation .................................. 5-121
How to enable/disable the Intelligent
Driver Alertness (I-DA) system ..............5-122
Intelligent Driver Alertness (I-DA)
system limitations ......................... 5-123
Break-in schedule ............................. 5-125
Fuel efficient driving tips .......................5-125
Increasing fuel economy ......................5-126
Parking/parking on hills .......................5-127
Power steering ................................ 5-128
Brake system ................................. 5-129
Brake precautions .......................... 5-129
Anti-lock Braking System (ABS) .............5-129
Brake Assist ................................ 5-131
Vehicle Dynamic Control (VDC) system ........5-131
Rise-up and build-up ....................... 5-132
Brake force distribution ....................5-132
Chassis Control ............................... 5-133Intelligent Trace Control
....................5-133
Active Ride Control ......................... 5-134
Intelligent Engine Brake ....................5-134
Hill start assist system ........................5-135
Rear Sonar System (RSS) ......................5-135
System operation .......................... 5-136
How to enable/disable the sonar
system ..................................... 5-138
Sonar limitations ........................... 5-140
System temporarily unavailable ............5-140
System maintenance ......................5-140
Cold weather driving .......................... 5-141
Freeing a frozen door lock ..................5-141
Antifreeze .................................. 5-141
Battery..................................... 5-141
Draining of coolant water ..................5-141
Tire equipment ............................. 5-141
Special winter equipment ..................5-142
Driving on snow or ice ......................5-142
Engine
block heater (if so equipped) ........5-142

WARNING
• 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.
• Closely supervise children when they
are around cars to prevent them
from playing and becoming locked in
the trunk where they could be seri-
ously injured. Keep the car locked,
with the rear seatback and trunk lid
securely latched when not in use, and
prevent children's access to car keys.
EXHAUST GAS (carbon monoxide)
WARNING
• Do not breathe exhaust gases; they
contain colorless and odorless car-
bon monoxide. Carbon monoxide is
dangerous. It can cause uncon-
sciousness or death. •
If you suspect that exhaust fumes
are entering the vehicle, drive with all
windows fully open, and have the ve-
hicle inspected immediately.
• Do not run the engine in closed
spaces such as a garage.
• Do not park the vehicle with the en-
gine running for any extended length
of time.
• Keep the rear vent windows, doors
and trunk lids (if so equipped) closed
while driving, otherwise exhaust
gases could be drawn into the pas-
senger compartment. If you must
drive with one of these open, follow
these precautions:
1. Open all the windows.
2. Set the
air recirculation but-
ton to off and the fan control dial
to high to circulate the air.
• If electrical wiring or other cable con-
nections must pass to a trailer
through the seal on the trunk lid or
the body, follow the manufacturer's
recommendation to prevent carbon
monoxide entry into the vehicle.
• The exhaust system and body should
be inspected by a qualified mechanic
whenever: a. The vehicle is raised for service.
b. You suspect that exhaust fumes
are entering into the passenger
compartment.
c. You notice a change in the sound of the exhaust system.
d. You have had an accident involv- ing damage to the exhaust sys-
tem, underbody, or rear of the
vehicle.
THREE-WAY CATALYST
The three-way catalyst is an emission con-
trol device installed in the exhaust system.
Exhaust gases in the three-way catalyst
are burned at high temperatures to help
reduce pollutants.
WARNING
• The exhaust gas and the exhaust
system are very hot. Keep people,
animals or flammable materials
away from the exhaust system
components.
• 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.
PRECAUTIONS WHEN STARTING AND
DRIVING
5-4Starting and driving

CAUTION
• Do not use leaded gasoline. Deposits
from leaded gasoline will seriously
reduce the three-way catalyst's abil-
ity to help reduce exhaust pollutants.
• Keep your engine tuned up. Malfunc-
tions in the ignition, fuel injection, or
electrical systems can cause overrich
fuel flow into the three-way catalyst,
causing it to overheat. Do not keep
driving if the engine misfires, or if no-
ticeable loss of performance or other
unusual operating conditions are de-
tected. Have the vehicle inspected
promptly. It is recommended that
you visit a NISSAN dealer for this
service.
• Avoid driving with an extremely low
fuel level. Running out of fuel could
cause the engine to misfire, damag-
ing the three-way catalyst.
• Do not race the engine while warm-
ing it up.
• Do not push or tow your vehicle to
start the engine.TIRE PRESSURE MONITORING
SYSTEM (TPMS)
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on
the vehicle placard or tire inflation pressure
label. (If your vehicle has tires of a different
size than the size indicated on the vehicle
placard or tire inflation pressure label, you
should determine the proper tire inflation
pressure for those tires.)
As an added safety feature, your vehicle
has been equipped with a Tire Pressure
Monitoring System (TPMS) that illuminates
a low tire pressure telltale when one or
more of your tires is significantly under-
inflated. Accordingly, when the low tire
pressure telltale illuminates, you should
stop and check all your tires as soon as
possible, and inflate them to the proper
pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and
stopping ability. Please note that the TPMS is not a substi-
tute for proper tire maintenance, and it is
the driver’s responsibility to maintain cor-
rect tire pressure, even if under-inflation
has not reached the level to trigger illumi-
nation of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction,
the telltale will flash for approximately one
minute and then remain continuously illu-
minated. This sequence will continue upon
subsequent vehicle start-ups as long as
the malfunction exists. When the malfunc-
tion indicator is illuminated, the system
may not be able to detect or signal low tire
pressure as intended. TPMS malfunctions
may occur for a variety of reasons, includ-
ing the installation of replacement or alter-
nate tires or wheels on the vehicle that
prevent the TPMS from functioning prop-
erly. Always check the TPMS malfunction
telltale af ter replacing one or more tires or
wheels on your vehicle to ensure that the
replacement or alternate tires and wheels
allow the TPMS to continue to function
properly.
Starting and driving5-5

FCC Notice:
For USA:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device
may not cause harmful interference, and
(2) this device must accept any interfer-
ence received, including interference
that may cause undesired operation.
NOTE:
Changes or modifications not ex-
pressly approved by the party respon-
sible for compliance could void the us-
er's authority to operate the
equipment.
For Canada:
This device contains licence-exempt
transmitter(s)/receiver(s) that comply
with Innovation, Science and Economic
Development Canada’s licence-exempt
RSS(s). Operation is subject to the fol-
lowing two conditions: (1) This device
may not cause interference. (2) This de-
vice must accept any interference, in-
cluding interference that may cause un-
desired operation of the device.
TPMS with Easy-Fill Tire Alert
When adding air to an under-inflated tire,
the TPMS with Easy-Fill Tire Alert provides
visual and audible signals outside the ve-
hicle to help you inflate the tires to the rec-
ommended COLD tire pressure.
Vehicle set-up:
1. Park the vehicle in a safe and level place.
2. Apply the parking brake and place theshif t lever in the P (Park) position (if so
equipped).
3. Place the ignition switch in the ON posi- tion. Do not start the engine.
Operation:
1. Add air to the tire.
2. Af ter a few seconds, the hazard indica- tors will start flashing.
3. When the designated pressure is reached, the horn beeps once and the
hazard indicators stop flashing.
4. Perform the above steps for each tire. • If the tire is over-inflated more thanapproximately 4 psi (30 kPa), the horn
beeps and the hazard indicators flash
three times. To correct the pressure,
push the core of the valve stem on the tire briefly to release pressure. When
the pressure reaches the designated
pressure, the horn beeps once.
• If the hazard indicator does not flash within approximately 15 seconds af ter
starting to inflate the tire, it indicates
that the Easy-Fill Tire Alert is not
operating.
• The TPMS will not activate the Easy-Fill Tire Alert under the following condi-
tions:
– If there is interference from an ex- ternal device or transmitter.
– The air pressure from the inflation device is not sufficient to inflate the
tire.
– There is a malfunction in the TPMS system.
– There is a malfunction in the horn or hazard indicators.
– The identification code of the tire’s pressure sensor is not registered to
the system.
– The battery of the tire pressure sensor is low.
• If the Easy-Fill Tire Alert does not oper- ate due to TPMS interference, move
the vehicle about 3 f t (1 m) backward
or forward and try again.
5-8Starting and driving

WARNING
Do not operate the push-button igni-
tion switch while driving the vehicle ex-
cept in an emergency. (The engine will
stop when the ignition switch is pushed
three consecutive times in quick suc-
cession or the ignition switch is pushed
and held for more than 2 seconds.) If
the engine stops while the vehicle is
being driven, this could lead to a crash
and serious injury. When the ignition switch is pushed without
depressing the brake pedal, the ignition
switch position will illuminate as follows:
Push center:
• Once to change to the ON position.
• Two times to change to the OFF position.
The ignition switch will automatically re-
turn to the LOCK position when any door is
either opened or closed with the switch in
the OFF position.
The ignition lock is designed so that the
ignition switch position cannot be placed
in the OFF position until the shif t lever is
moved to the P (Park) position.
When the ignition switch cannot be pushed
toward the OFF position, proceed as fol-
lows:
1. Move the shif t lever to the P (Park)
position.
2. Push the ignition switch. The ignition switch position will change to the ON
position.
3. Push the ignition switch again to the OFF position. The shif t lever can be moved from the P
(Park) position if the ignition switch is in
the ON position and the brake pedal is
depressed.
If the battery of the vehicle is discharged,
the ignition switch cannot be moved
from the LOCK position.
Some indicators and warnings for opera-
tion are displayed in the meter. For addi-
tional information, see “Warning lights, indi-
cator lights and audible reminders” (P. 2-9).
LSD2645
PUSH-BUTTON IGNITION SWITCH
Starting and driving5-11

OPERATING RANGE
The Intelligent Key functions can only be
used when the Intelligent Key is within the
specified operating range.
When the Intelligent Key battery is almost
discharged or strong radio waves are pres-
ent near the operating location, the Intelli-
gent Key system’s operating range be-
comes narrower and may not function
properly.
If the Intelligent Key is within the operating
range, it is possible for anyone, even some-one who does not carry the Intelligent Key,
to push the ignition switch to start the
engine.
The operating range of the engine start
function is inside of the vehicle
O1.
• The luggage area is not included in the operating range, but the Intelligent Key
may function.
• If the Intelligent Key is placed on the in- strument panel or inside the glove box,
storage bin or door pocket, the Intelligent
Key may not function.
• If the Intelligent Key is placed near the door or window outside the vehicle, the
Intelligent Key may function.
PUSH-BUTTON IGNITION SWITCH
POSITIONS
LOCK (Normal parking position)
The ignition switch can only be locked in
this position.
The ignition switch will be unlocked when it
is pushed to the ON position while carrying
the Intelligent Key.
The ignition switch will lock when any door
is opened or closed with the ignition
switched off. ON (Normal operating position)
The ignition system and the electrical ac-
cessory power activate at this position
without the engine turned on.
The ON position has a battery saver feature
that will place the ignition switch in the OFF
position, if the vehicle is not running, af ter
some time under the following conditions:
• All doors are closed.
• The shif t lever is in the P (Park) position.
The battery saver feature will be canceled if
any of the following conditions occurs:
• Any door is opened.
• The shif t lever is moved out of the P (Park)
position.
• The ignition switch changes position.CAUTION
Do not leave the vehicle with the igni-
tion switch in the AUTO ACC or ON posi-
tion when the engine is not running for
an extended period. This can discharge
the battery.
LSD2089
5-12Starting and driving