coolant NISSAN SENTRA 2021 Owners Manual

MR20DD engine
1. Engine oil filler cap (P. 8-7)
2. Brake and clutch (if so equipped) fluidreservoir (P. 8-10)
3. Air cleaner (P. 8-16)
4. Battery (P. 8-12)
5. Fuse and relay box (P. 8-19)
6. Engine coolant reservoir (P. 8-5)
7. Engine oil dipstick (P. 8-7)
8. Drive belt location (P. 8-14)
9. Windshield-washer fluid reservoir
(P.
8-11)Refer to the page number indicated in
parentheses for operating details.

2 Instruments and controls
Instrument panel................................2-2
Meters and gauges .............................2-4
Speedometer and odometer .................2-4
Tachometer ..................................2-5
Engine coolant temperature gauge ..........2-6
Fuel gauge ................................... 2-7
Distance To Empty (DTE) ..................... 2-7
Warning lights, indicator lights and audible
reminders .......................................2-8
Checking lights ...............................2-9
Warning lights ................................2-9
Indicator lights .............................. 2-14
Audible reminders ........................... 2-16
Vehicle information display 4.2 inch (11 cm)
TYPE A (if so equipped) ......................... 2-17
How to use the vehicle information
display ...................................... 2-18
Startup display .............................. 2-18
Settings ..................................... 2-18
Vehicle information display indicators .......2-25
Vehicle information display warnings
and indicators ............................... 2-27
Vehicle information display– 7 inch (18 cm)
Type B (if so equipped) ......................... 2-34
How to use the vehicle information
display ...................................... 2-34
Startup display .............................. 2-35Resetting the drive computer
...............2-35
Settings ..................................... 2-35
Vehicle information display indicators .......2-43
Vehicle information display warnings ........2-44
Security systems ............................... 2-52
Vehicle security system (if so equipped) .....2-52
NISSAN Vehicle Immobilizer System .........2-53
Wiper and washer switch .......................2-54
Switch operation ............................ 2-54
Rear window and outside mirror
(if so equipped) defroster switch ...............2-55
Headlight and turn signal switch ...............2-55
Headlight control switch ....................2-55
Daytime Running Lights (DRL) system
(if so equipped) .............................. 2-59
LED Daytime Running Lights (DRL)
system (if so equipped) ......................2-59
Instrument brightness control ..............
2-60
T

urn signal switch ........................... 2-60
Fog light switch (if so equipped) .............2-61
Horn ........................................... 2-62
Heated seat switches (if so equipped) ..........2-62
Heated steering wheel switch (if so equipped) . . 2-63
E-call (SOS) button (if so equipped) .............2-64
Rear Door Alert ................................. 2-64
Power outlet ................................... 2-66

1. Tachometer
2. Warning and indicator lights
3. Vehicle information display
4. Speedometer
5. Fuel gauge
6. Engine coolant temperature gaugeSPEEDOMETER AND ODOMETER
This vehicle is equipped with a speedom-
eter and odometer. The speedometer is
located on the right side of the meter clus-
ter. The odometer is located within the ve-
hicle information display.
Speedometer
The speedometer indicates the vehicle
speed.
LIC4212
LIC2218
METERS AND GAUGES

CAUTION
When engine speed approaches the
red zone, shif t to a higher gear or re-
duce engine speed. Operating the en-
gine in the red zone may cause serious
engine damage.
ENGINE COOLANT TEMPERATURE
GAUGE
NOTE:
The ignition switch must be placed in the
ON position for the gauge to give a
reading.
The gauge indicates the engine coolant
temperature. The engine coolant tempera-
ture is within the normal range when the
reading is within the zone
OAshown in the
illustration. The engine coolant temperature varies
with the outside air temperature and driv-
ing conditions.
2-6Instruments and controls

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 lu-
brication.
• 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.
• If the engine coolant temperature gauge indicates engine coolant temperature
over the normal range, turn the air condi-
tioner off. For additional information, refer
to “If your vehicle overheats” in the “In case
of emergency” section of this manual.
• 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.
4-36Monitor, climate, audio, phone and voice recognition systems

• 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 op-
eration. • 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, refer to “Air conditioner sys-
tem refrigerant and oil recommendations”
in the “Technical and consumer informa-
tion” section of this manual.
It is recommended that you visit a NISSAN
dealer to service your “environmentally
friendly ” air conditioning system.

Increasing fuel economy.......................5-111
Parking/parking on hills .......................5-112
Power steering ................................ 5-113
Brake system ................................. 5-114
Brake precautions .......................... 5-114
Anti-lock Braking System (ABS) .............5-114
Brake Assist ................................ 5-116
Vehicle Dynamic Control (VDC) system ........5-116
Rise-up and build-up ....................... 5-118
Brake force distribution ....................5-118
Chassis Control ............................... 5-119
Intelligent Trace Control (I-TC) ..............5-119
Active Ride Control (ARC) ...................5-119
Hill start assist system ........................ 5-119
Rear Sonar System (RSS) ......................5-120System operation
.......................... 5-121
How to enable/disable the sonar
system ..................................... 5-122
Sonar limitations ........................... 5-124
System temporarily unavailable ............5-124
System maintenance ......................5-125
Cold weather driving .......................... 5-125
Freeing a frozen door lock ..................5-125
Antifreeze .................................. 5-125
Battery..................................... 5-125
Draining of coolant water ..................5-126
Tire equipment ............................. 5-126
Special winter equipment ..................5-126
Driving on snow or ice ......................5-126
Engine block heater (if so equipped) ........5-127

DRAINING OF COOLANT WATER
If the vehicle is to be lef t outside without
antifreeze, drain the cooling system, includ-
ing the engine block. Refill before operating
the vehicle. For additional information, refer
to “Changing engine coolant” in the “Do-it-
yourself ” section of this manual.
TIRE EQUIPMENT
1. SUMMER tires have a tread designed toprovide superior performance on dry
pavement. However, the performance of
these tires will be substantially reduced
in snowy and icy conditions. If you oper-
ate your vehicle on snowy or icy roads,
NISSAN recommends the use of MUD &
SNOW or ALL SEASON TIRES on all four
wheels. It is recommended that you visit
a NISSAN dealer for the tire type, size,
speed rating and availability information.
2. For additional traction on icy roads, studded tires may be used. However,
some U.S. states and Canadian prov-
inces prohibit their use. Check local,
state and provincial laws before install-
ing studded tires. Skid and traction capabilities of studded
snow tires on wet or dry surfaces may be
poorer than that of non-studded snow
tires.
3. Tire chains may be used. For additional
information, refer to “Tire chains” in the
“Do-it-yourself ” section of this manual.
SPECIAL WINTER EQUIPMENT
It is recommended that the following items
be carried in the vehicle during winter:
• A scraper and stiff-bristled brush to re-move ice and snow from the windows
and wiper blades.
• A sturdy, flat board to be placed under the jack to give it firm support.
• A shovel to dig the vehicle out of snow- drif ts.
• Extra washer fluid to refill the windshield- washer fluid reservoir.
DRIVING ON SNOW OR ICE

6. Af ter the engine cools down, check thecoolant level in the engine coolant res-
ervoir with the engine running. Add cool-
ant to the engine coolant reservoir if
necessary. Have your vehicle repaired. It
is recommended that you visit a NISSAN
dealer for this service. When towing your vehicle, all State (Provin-
cial in Canada) and local regulations for
towing must be followed. Incorrect towing
equipment could damage your vehicle.
Towing instructions are available from a
NISSAN dealer. Local service operators are
generally familiar with the applicable laws
and procedures for towing. To assure
proper towing and to prevent accidental
damage to your vehicle, NISSAN recom-
mends having a service operator tow your
vehicle. It is advisable to have the service
operator carefully read the following pre-
cautions:CAUTION
• When towing, make sure that the
transmission, axles, steering system
and powertrain are in working condi-
tion. If any of these conditions apply,
dollies or a flatbed tow truck must be
used.
• Always attach safety chains before
towing.
For additional information, refer to “Flat
towing” in the “Technical and consumer in-
formation” section of this manual.
TOWING RECOMMENDED BY
NISSAN
NISSAN recommends towing your vehicle
based upon the type of drivetrain. For addi-
tional information, refer to the diagrams in
this section to ensure that your vehicle is
properly towed.
TOWING YOUR VEHICLE
6-12In case of emergency

When performing any inspection or main-
tenance work on your vehicle, always take
care to prevent serious accidental injury to
yourself or damage to the vehicle. The fol-
lowing are general precautions which
should be closely observed.CAUTION
• Do not work under the hood while
the engine is hot. Turn the engine off
and wait until it cools down.
• Avoid contact with used engine oil
and coolant. Improperly disposed
engine oil, engine coolant and/or
other vehicle fluids can damage the
environment. Always conform to lo-
cal regulations for disposal of vehicle
fluid.
• Never leave the engine or the trans-
mission related component harness
connector disconnected while the ig-
nition switch is in the ON position.
• Never connect or disconnect the bat-
tery or any transistorized compo-
nent while the ignition switch is in
the ON position.
This “Do-it-yourself ” section gives instruc-
tions regarding only those items which are
relatively easy for an owner to perform.
A Genuine NISSAN service manual is also
available. For additional information, refer
to “Owner's Manual/Service Manual order
information” in the “Technical and con-
sumer information” section of this manual.
MAINTENANCE PRECAUTIONS
8-2Do-it-yourself