warning NISSAN SENTRA 2021 Owners Manual

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.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 en-
gine.
CAR PHONE OR CB RADIO BLUETOOTH® HANDS-FREE PHONE
SYSTEM
Monitor, climate, audio, phone and voice recognition systems4-67

System maintenance.......................5-47
RearCrossTrafficAlert(RCTA) .................. 5-48
RCTA system operation .....................5-48
How to enable/disable the RCTA
system ...................................... 5-51
RCTA system limitations .....................5-53
System temporarily unavailable .............5-55
System maintenance .......................5-57
Cruise control (if so equipped) ..................5-58
Precautions on cruise control ...............5-58
Cruise control operations ...................5-58
Intelligent Cruise Control (ICC) (if so equipped) . . 5-59 ICC system operation ....................... 5-61
The ICC switch .............................. 5-62
ICC system limitations ......................5-68
System temporarily unavailable .............5-71
System maintenance .......................5-73
Rear Automatic Braking (RAB) ..................5-74
RAB system operation .......................5-75
Turning the RAB system on/off ..............5-77
RAB system limitations ......................5-77
System malfunction ......................... 5-80
System maintenance .......................5-80
Automatic Emergency Braking (AEB) with
Pedestrian Detection ........................... 5-81AEB with Pedestrian Detection system
operation
................................... 5-82
Turning the AEB with Pedestrian
Detection system ON/OFF ..................5-85
AEB with Pedestrian Detection system
limitations .................................. 5-86
System temporarily unavailable .............5-88
System malfunction ......................... 5-90
System maintenance .......................5-90
Intelligent Forward Collision Warning (I-FCW) . . . 5-92 I-FCW system operation .....................5-95
Turning the I-FCW system on/off ............5-96
I-FCW system limitations ....................5-97
System temporarily unavailable ............5-102
System malfunction ........................ 5-104
System maintenance ......................5-104
Intelligent

Driver Alertness (I-DA) ...............5-105
Intelligent Driver Alertness system
operation .................................. 5-106
How to enable/disable the Intelligent
Driver Alertness (I-DA) system ..............5-107
Intelligent Driver Alertness (I-DA)
system limitations ......................... 5-108
Break-in schedule ............................. 5-109
Fuel efficient driving tips .......................5-110

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)
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.

Additional information:
• When replacing a wheel without theTPMS such as the spare tire, the TPMS
does not monitor the tire pressure of the
spare tire.
• The TPMS will activate only when the ve- hicle is driven at speeds above 16 mph (25
km/h). Also, this system may not detect a
sudden drop in tire pressure (for example,
a flat tire while driving).
• The low tire pressure warning light does not automatically turn off when the tire
pressure of all your tires is adjusted. Af ter
the tires are inflated to the recom-
mended pressure, the vehicle must be
driven at speeds above 16 mph (25 km/h)
to activate the TPMS and turn off the low
tire pressure warning light. Use a tire
pressure gauge to check the tire pres-
sure. • The “CHECK TIRE PRES” (TypeA-ifso
equipped) or the “Tire Pressure Low - Add
Air”(TypeB-ifsoequipped) warning mes-
sage is displayed in the odometer when
the low tire pressure warning light is illu-
minated and low tire pressure is de-
tected. The “CHECK TIRE PRES” (Typ eA-if
so equipped) or the “Tire Pressure Low -
AddAir”(TypeB-ifsoequipped) warning
message turns off when the low tire pres-
sure warning light turns off. The low tire
pressure warning light remains illumi-
nated until the tires are inflated to the
recommended COLD tire pressure. The
“CHECK TIRE PRES” (TypeA-ifso
equipped) or the “Tire Pressure Low - Add
Air”(TypeB-ifsoequipped) warning mes-
sage is displayed each time the ignition
switch is placed in the ON position as
long as the low tire pressure warning light
remains illuminated.
• The “CHECK TIRE PRES” (TypeA-ifso equipped) or the “Tire Pressure Low - Add
Air”(TypeB-ifsoequipped) warning is not
displayed if the low tire pressure warning
light illuminates to indicate a TPMS mal-
function. • Tire pressure rises and falls depending on
the heat caused by the vehicle’s opera-
tion and the outside temperature. Do not
reduce the tire pressure af ter driving be-
cause the tire pressure rises af ter driving.
Low outside temperature can lower the
temperature of the air inside the tire
which can cause a lower tire inflation
pressure. This may cause the low tire
pressure warning light to illuminate. If the
warning light illuminates, check the tire
pressure for all four tires.
• The Tire and Loading Information label is located in the driver's door opening.
For additional information, refer to “Check
tire pressure warning message” or “Low tire
pressure warning light” in the “Instruments
and controls” section and “Tire Pressure
Monitoring System (TPMS)” in the “In case of
emergency” section of this manual.

•If the low tire pressure warning light
illuminates while driving, avoid sud-
den steering maneuvers or abrupt
braking, reduce vehicle speed, pull
off the road to a safe location and
stop the vehicle as soon as possible.
Driving with under-inflated tires may
permanently damage the tires and
increase the likelihood of tire failure.
Serious vehicle damage could occur
and may lead to an accident and
could result in serious personal in-
jury. Check the tire pressure for all
four tires. Adjust the tire pressure to
the recommended COLD tire pres-
sure shown on the Tire and Loading
Information label to turn the low tire
pressure warning light off. If you have
a flat tire, replace it with a spare tire
as soon as possible. (For additional
information on changing a flat tire,
refer to “Flat tire” in the “In case of
emergency ” section of this manual.) •
When replacing a wheel without the
TPMS such as the spare tire, when a
spare tire is mounted or a wheel is
replaced, the TPMS will not function
and the low tire pressure warning
light will flash for approximately 1
minute. The light will remain on af ter
1 minute. Have your tires replaced
and/or TPMS reset as soon as pos-
sible. It is recommended that you
visit a NISSAN dealer for this service.
• Replacing tires with those not origi-
nally specified by NISSAN could af-
fect the proper operation of the
TPMS.
• Do not inject any tire liquid or aerosol
tire sealant into the tires, as this may
cause a malfunction of the tire pres-
sure sensors.
CAUTION
Do not place metalized film or any
metal parts (antenna, etc.) on the win-
dows. This may cause poor reception of
the signals from the tire pressure sen-
sors, and the TPMS will not function
properly. Some devices and transmitters may tem-
porarily interfere with the operation of the
TPMS and cause the low tire pressure
warning light to illuminate.
Some examples are:
• Facilities or electric devices using similar
radio frequencies are near the vehicle.
• If a transmitter set to similar frequencies is being used in or near the vehicle.
• If a computer (or similar equipment) or a DC/AC converter is being used in or near
the vehicle.
The low tire pressure warning light may
illuminate in the following cases:
• If the vehicle is equipped with a wheel and tire without TPMS.
• If the TPMS has been replaced and the ID has not been registered.
• If the wheel is not originally specified by NISSAN.
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
Starting and driving5-7

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 or the clutch
pedal for manual transmission (M/T) mod-
els, the ignition switch position will illumi-
nate as follows:
Push center:
• Once to change to ACC.
• Two times to change to ON.
• Three times to return to OFF.
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 or N (Neutral)
position (M/T).
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) posi-
tion or N (Neutral) position (M/T).
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, refer to “Warning lights,
indicator lights and audible reminders” in
the “Instruments and controls” section of
this manual.
LSD2645
PUSH-BUTTON IGNITION SWITCH
Starting and driving5-11

NISSAN VEHICLE IMMOBILIZER
SYSTEM
The NISSAN Vehicle Immobilizer System
will not allow the engine to start without
the use of the registered key.
If the engine fails to start using a registered
key (for example, when interference is
caused by another registered key, an auto-
mated toll road device or automatic pay-
ment device on the key ring), restart the
engine using the following procedure:
1. Leave the ignition switch in the ON posi-tion for approximately 5 seconds.
2. Place the ignition switch in the OFF or LOCK position, and wait approximately
10 seconds.
3. Repeat steps 1 and 2.
4. Restart the engine while holding the de- vice (which may have caused the inter-
ference) separate from the registered
key.
If the no start condition re-occurs, NISSAN
recommends placing the registered key on
a separate key ring to avoid interference
from other devices. • Make sure the area around the vehicle is
clear.
• Check fluid levels such as engine oil, cool- ant, brake and clutch fluid (if so equipped),
and windshield-washer fluid as fre-
quently as possible, or at least whenever
you refuel.
• Check that all windows and lights are clean.
• Visually inspect tires for their appearance and condition. Also check tires for proper
inflation.
• Lock all doors.
• Position seat and adjust head restraints/ headrests.
• Adjust inside and outside mirrors.
• Fasten seat belts and ask all passengers to do likewise.
• Check the operation of warning lights when the ignition switch is placed in the
ON position. For additional information,
refer to “Warning lights, indicator lights
and audible reminders” in the “Instru-
ments and controls” section of this
manual. 1. Apply the parking brake.
2.
Continuously Variable Transmission
model:
Move the shif t lever to P (Park) or N (Neu-
tral). P (Park) is recommended.
The starter is designed not to operate
if the shif t lever is in any of the driving
positions.
Manual Transmission (M/T) model:
Move the shif t lever to N (Neutral). De-
press the clutch pedal to the floor.
The starter is designed not to operate
unless the clutch pedal is fully de-
pressed.
3. Push the ignition switch to the ON posi- tion. Depress the brake pedal and the
clutch pedal (if so equipped) and push
the ignition switch to start the engine.
To start the engine immediately, push
and release the ignition switch while de-
pressing the brake pedal with the igni-
tion switch in any position.
• If the engine is very hard to start in extremely cold weather or when re-
starting, depress the accelerator
pedal a little (approximately 1/3 to the
BEFORE STARTING THE ENGINE STARTING THE ENGINE
5-14Starting and driving

OFF position:
For normal driving and fuel economy, use
the OFF position.
ON position:
For driving up or down long slopes where
engine braking is necessary, or for powerful
acceleration, use the ON position. The
transmission will automatically select a dif-
ferent gear ratio, allowing the engine to
provide high output.
Remember not to drive at high speeds for
extended periods of time with the drive
sport mode in the ON position. This re-
duces fuel economy.
Accelerator downshif t
— in D (Drive) position —
For passing or hill climbing, depress the
accelerator pedal to the floor. This shif ts
the transmission down into a lower gear,
depending on the vehicle speed.
Fail-safe
If the vehicle is driven under extreme
conditions, such as excessive wheel
spinning and subsequent hard braking,
the fail-safe system may be activated.
The Malfunction Indicator Light (MIL)may come on to indicate the fail-safe
mode is activated. For additional infor-
mation, refer to “Malfunction Indicator
Light (MIL)” in the “Instruments and con-
trols” section of this manual. This will oc-
cur even if all electrical circuits are func-
tioning properly. In this case, place the
ignition switch in the OFF position and
wait for 10 seconds. Then push the
switch back to the ON position. The ve-
hicle should return to its normal operat-
ing condition. If it does not return to its
normal operating condition, have the
transmission checked and repaired, if
necessary. It is recommended that you
visit a NISSAN dealer for this service.
WARNING
When the high fluid temperature pro-
tection mode or fail-safe operation oc-
curs, vehicle speed may be gradually
reduced. The reduced speed may be
lower than other traffic, which could in-
crease the chance of a collision. Be es-
pecially careful when driving. If neces-
sary, pull to the side of the road at a safe
place and allow the transmission to re-
turn to normal operation, or have it re-
paired if necessary.
MANUAL TRANSMISSION (if so
equipped)
CAUTION
• Do not rest your foot on the clutch
pedal while driving. This may cause
clutch damage.
• Fully depress the clutch pedal before
shif ting to help prevent transmission
damage.
• Stop your vehicle completely before
shif ting into R (Reverse).
Starting and driving5-21

–When rain, snow or dirt adheres to
the windshield in front of the
multi-sensing camera unit.
– When the headlights are not
bright due to dirt on the lens or if
the aiming is not adjusted
properly.
– When strong light enters the cam-
era unit. (For example, the light di-
rectly shines on the front of the
vehicle at sunrise or sunset.)
– When a sudden change in bright-
ness occurs. (For example, when
the vehicle enters or exits a tunnel
or under a bridge.)
– In areas not covered by the navi-
gation system.
– If there are deviations in relation
to the navigation, for example due
to changes in the road routing.
– When overtaking buses or trucks
with speed stickers.
TURNING THE TRAFFIC SIGN
RECOGNITION (TSR) SYSTEM ON
AND OFF
Perform the following steps to enable or
disable the TSR 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 OK button.
2. Select “Speed Limit Sign” and press the OK button to turn the system on or off.
SYSTEM TEMPORARILY
UNAVAILABLE
If the vehicle is parked in direct sunlight
under high temperature conditions (over
approximately 104°F [40°C]) and then
started, the TSR system may be deacti-
vated automatically. The “Unavailable: High
Camera Temperature” warning message
will appear in the vehicle information dis-
play.
LSD3243
For vehicles with the 7 inch meter display

Action to take:
When the interior temperature is reduced,
the TSR system will resume operating au-
tomatically.
SYSTEM MALFUNCTION
If the TSR system malfunctions, it will be
turned off automatically and the system
“Malfunction” warning message will appear
in the vehicle information display.
Action to take:
If the TSR “Malfunction” message appears,
pull of the road at a safe location and stop
the vehicle. Turn the engine off and restart
the engine. If the TSR “Malfunction” mes-
sage continues to appear, have the system
checked. It is recommended that you visit a
NISSAN dealer for this service.
SYSTEM MAINTENANCE
The TSR system uses the same multi-
sensing front camera unit that is used by
the Lane Departure Warning (LDW) system,
located in front of the interior rearview mir-
ror. For additional information, refer to ”Sys-
tem maintenance” in the “Lane Departure
Warning (LDW)” section.
LSD3740
LANE DEPARTURE WARNING (LDW)
Starting and driving5-29