2023 NISSAN SENTRA sensor

BRAKE ASSIST
When the force applied to the brake pedal
exceeds a certain level, the Brake Assist is
activated generating greater braking force
than a conventional brake booster even
with light pedal force.
WARNING
The Brake Assist is only an aid to assist
braking operation and is not a collision
warning or avoidance device. It is the
driver’s responsibility to stay alert,
drive safely and be in control of the ve-
hicle at all times. The VDC system uses various sensors to
monitor driver inputs and vehicle motion.
Under certain driving conditions, the VDC
system helps to perform the following
functions:
• Controls brake pressure to reduce wheel
slip on one slipping drive wheel so power
is transferred to a non-slipping drive
wheel on the same axle.
• Controls brake pressure and engine out- put to reduce drive wheel slip based on
vehicle speed (traction control function).
• Controls brake pressure at individual wheels and engine output to help the
driver maintain control of the vehicle in
the following conditions:– Understeer (vehicle tends to not follow the steered path despite increased
steering input)
– Oversteer (vehicle tends to spin due to certain road or driving conditions)
The VDC system can help the driver to
maintain control of the vehicle, but it can-
not prevent loss of vehicle control in all driv-
ing situations.
When the VDC system operates, the
indicator light in the instrument panel
flashes to note the following: • The road may be slippery or the system
may determine some action is required
to help keep the vehicle on the steered
path.
• You may feel a pulsation in the brake pedal and hear a noise or vibration from
under the hood. This is normal and indi-
cates that the VDC system is working
properly.
• Adjust your speed and driving to the road conditions.
For additional information, see “Slip indica-
tor light” (P. 2-16) and ”Vehicle Dynamic Con-
trol (VDC) OFF indicator light” (P. 2-16).
If a malfunction occurs in the system, the
indicator light comes on in the instru-
ment panel. The VDC system automatically
turns off when the indicator light is off.
The vehicle information display is used to
turn off the VDC system. The
indicator
light and the AEB system warning light illu-
minates to indicate the VDC system is off.
When the vehicle information display is
used to turn off the VDC system, the sys-
tem still operates to prevent one drive
wheel from slipping by transferring power
to a non-slipping drive wheel. The
indicator light flashes if this occurs. All
VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM
Starting and driving5-131

When the Intelligent Trace Control is oper-
ating, you may feel a pulsation in the brake
pedal and hear a noise. This is normal and
indicates that the Intelligent Trace Control
is operating properly.
You may also feel deceleration when the
Intelligent Trace Control is operating. How-
ever, this is not a malfunction.
ACTIVE RIDE CONTROL
This system senses upper body motion
(based on wheel speed information) and
controls four wheel brake pressure. This will
enhance ride comfort in effort to restrain
uncomfortable upper body movement
when passing over undulated road
surfaces.
When the VDC system is turned off, the Ac-
tive Ride Control is also turned off.
When the Active Ride Control is operating,
you may hear noise and sense slight decel-
eration. This is normal and indicates that
the Active Ride Control is operating
properly.
If the chassis control warning message ap-
pears in the vehicle information display, it
may indicate that Active Ride Control is not
functioning properly. Have the system
checked by a NISSAN dealer as soon aspossible. See “Vehicle information display
warnings and indicators” (P. 2-26) or (P. 2-41).
INTELLIGENT ENGINE BRAKE
The Intelligent Engine Brake function adds
subtle deceleration by controlling gear ra-
tio, depending on the cornering condition
calculated from driver’s steering input and
plural sensors. This benefit is for easier
traceability and less workload of adjusting
speed with braking at corners.
The Intelligent Engine Brake also adds
subtle deceleration with gear ratio control
according to driver’s brake pedal
operation.
If the chassis control warning message ap-
pears in the vehicle information display, it
may indicate that the Intelligent Engine
Brake is not functioning properly. Have the
system checked by a NISSAN dealer as
soon as possible. See “Vehicle information
display warnings and indicators” (P. 2-26) or
(P. 2-41).
WARNING
The Intelligent Engine Brake may not
be effective depending on the driving
condition. Always drive carefully and
attentively. When the Intelligent Engine Brake is oper-
ating, the needle of the tachometer will rise
up and you may hear an engine noise. This
is normal and indicates that the Intelligent
Engine Brake is operating properly.
5-134Starting and driving

WARNING
• The RSS is a convenience but it is not
a substitute for proper parking.
• The driver is always responsible for
safety during parking and other ma-
neuvers. Always look around and
check that it is safe to do so before
parking.
• Read and understand the limitations
of the RSS as contained in this sec-
tion. The colors of the corner sonar
indicator and the distance guide
lines in the rear view indicate differ-
ent distances to the object.
• Inclement weather or ultrasonic
sources such as an automatic car
wash, a truck's compressed-air
brakes or a pneumatic drill may af-
fect the function of the system; this
may include reduced performance or
a false activation.
• This function is designed as an aid to
the driver in detecting large station-
ary objects to help avoid damaging
the vehicle. •The system is not designed to prevent
contact with small or moving objects.
Always move slowly. The system will
not detect small objects below the
bumper, and may not detect objects
close to the bumper or on the ground.
• The system may not detect the fol-
lowing objects: fluff y objects such as
snow, cloth, cotton, glass, wool, etc.;
thin objects such as rope, wire and
chain, etc.; or wedge-shaped objects.
If your vehicle sustains damage to the
bumper fascia, leaving it misaligned or
bent, the sensing zone may be altered
causing inaccurate measurement of ob-
stacles or false alarms.
CAUTION
• Excessive noise (such as audio sys-
tem volume or an open vehicle win-
dow) will interfere with the tone and
it may not be heard.
• Keep the sonar sensors (located on
the bumper fascia) free from snow,
ice and large accumulations of dirt.
Do not clean the sensors with sharp
objects. If the sensors are covered,
the accuracy of the sonar function
will be diminished.
SYSTEM OPERATION
The system informs with a visual and au-
dible alert of rear obstacles when the shif t
lever is in the R (Reverse) position.
The system is deactivated at speeds above
6 mph (10 km/h). It is reactivated at lower
speeds.
The intermittent tone will stop af ter 3 sec-
onds when an obstacle is detected by only
the corner sensor and the distance does
not change. The tone will stop when the
obstacle moves away from the vehicle or if
the vehicle moves away from the obstacle.
When the object is detected, the indicator
(green) appears and blinks and the tone
sounds intermittently. When the vehicle
moves closer to the object, the color of the
indicator turns yellow and the rate of the
blinking increases. When the vehicle is very
close to the object, the indicator stops
blinking and turns red, and the tone
sounds continuously.
5-136Starting and driving

HOW TO ENABLE/DISABLE THE
SONAR SYSTEM
The system is automatically activated
when the ignition is in the ON position and
the shif t lever is in the R (Reverse) position.
Perform the following steps to enable or
disable the sonar system:
For vehicles with the 7 inch meter
display:
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 “Parking Aids” and press the OK button.
3. Select “Rear” and press the OK button to turn the system on or off.
– Select “Auto Show Sonar” to display the parking sensor in the vehicle information
display when the sonar system
activates.
– Select “Distance” to change the sonar system distance to “Long,” “Medium” or
“Short.”
– Select “Volume” to change the volume to “High,” “Medium” or “Low”
LSD3981
For vehicles with the 7 inch meter display
5-138Starting and driving

For vehicles with the 4.2 inch meter
display:
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 “Parking Aids” and press the OK button.
3. Select “Rear Sensor” and press the OK button to turn the system on or off.
– Select “Display” to display the parking sensor in the vehicle information display
when the sonar system activates.
– Select “Distance” to change the sonar system distance to “Long,” “Medium” or
“Short.”
– Select “Volume” to change the volume to “High,” “Medium” or “Low”
LSD3799
For vehicles with the 4.2 inch meter display
Starting and driving5-139

SONAR LIMITATIONS
WARNING
Listed below are the system limitations
for the sonar system. Failure to operate
the vehicle in accordance with these
system limitations could result in seri-
ous injury or death.
• The system is deactivated at speeds
above 6 mph (10 km/h). It is reacti-
vated at lower speeds.
• Inclement weather or ultrasonic
sources such as an automatic car
wash, a truck’s compressed-air
brakes or a pneumatic drill may af-
fect the function of the system; this
may include reduced performance or
a false activation.
• The system is not designed to pre-
vent contact with small or moving
objects. Always move slowly. The
system will not detect small objects
below the bumper or on the ground.
• The system may not detect the fol-
lowing objects: fluff y objects such as
snow, cloth, cotton, glass-wool, etc.;
thin objects such as rope, wire and
chain, etc.; or wedge-shaped objects. •
The system may not detect objects
at speeds above 3 mph (5 km/h) and
may not detect certain angular or
moving objects.
• Do not attach stickers (including
transparent material), install acces-
sories, or apply anything blocking
the sensors. These conditions may
reduce the ability of the system.
SYSTEM TEMPORARILY
UNAVAILABLE
When sonar blockage is detected, the sys-
tem will be deactivated automatically.
The system is not available until the condi-
tions no longer exist.
The sonar sensors may be blocked by tem-
porary ambient conditions such as splash-
ing water, mist or fog. The blocked condi-
tion may also be caused by objects such as
ice, frost or dirt obstructing the sonar
sensors.
Action to take:
When the above conditions no longer exist,
the system will resume automatically.
SYSTEM MAINTENANCE
The sonar sensorsO1are located on the
rear bumper. Always keep the area near
the sonar sensors clean.
The sonar sensors may be blocked by tem-
porary ambient conditions such as splash-
ing water, mist or fog.
The blocked condition may also be caused
by objects such as ice, frost or dirt ob-
structing the sonar sensors.
Check for and remove objects obstructing
the area around the sonar sensors.
LSD3754
5-140Starting and driving

Do not attach stickers (including transpar-
ent material), install accessories or apply
additional paint near the sonar sensors.
Do not strike or damage the area around
the sonar sensors. It is recommended that
you visit a NISSAN dealer if the area around
the sonar sensors is damaged due to a
collision.FREEING A FROZEN DOOR LOCK
To prevent a door lock from freezing, apply
de-icer through the key hole. If the lock
becomes frozen, heat the key before in-
serting it into the key hole, or use the re-
mote keyless entry key fob or the NISSAN
Intelligent Key®.
ANTIFREEZE
In the winter when it is anticipated that the
temperature will drop below 32°F (0°C),
check the antifreeze to assure proper win-
ter protection. For additional information,
see “Engine cooling system” (P. 8-4).
BATTERY
If the battery is not fully charged during
extremely cold weather conditions, the
battery fluid may freeze and damage the
battery. To maintain maximum efficiency,
the battery should be checked regularly.
This vehicle is equipped with a sealed
maintenance free battery. It is recom-
mended that you visit a NISSAN dealer for
service.
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 operatingthe vehicle. For additional information, see
“Changing engine coolant” (P. 8-5).
TIRE EQUIPMENT
1. SUMMER tires have a tread designed to
provide 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, see “Tire chains” (P. 8-37).
COLD WEATHER DRIVING
Starting and driving5-141

TIRE PRESSURE MONITORING
SYSTEM (TPMS)
This vehicle is equipped with TPMS. It moni-
tors tire pressure of all tires except the
spare. When the low tire pressure warning
light is lit, and the “Tire Pressure Low - Add
Air” appears in the vehicle information dis-
play, one or more of your tires is signifi-
cantly under-inflated. If the vehicle is being
driven with low tire pressure, the TPMS will
activate and warn you of it by the low tire
pressure warning light. This system will ac-
tivate only when the vehicle is driven at
speeds above 16 mph (25 km/h). For addi-
tional information, “Warning lights, indica-
tor lights and audible reminders” (P. 2-9),
and “Tire Pressure Monitoring System
(TPMS)” (P. 5-5).
WARNING
• Radio waves could adversely affect
electric medical equipment. Those
who use a pacemaker should contact
the electric medical equipment
manufacturer for the possible influ-
ences before use. •
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 the
light still illuminates while driving af-
ter adjusting the tire pressure, a tire
may be flat or the TPMS may be mal-
functioning. If you have a flat tire, re-
place it with a spare tire as soon as
possible. If no tire is flat and all tires
are properly inflated, have the ve-
hicle checked. It is recommended
that you visit a NISSAN dealer for this
service. •
When using a wheel without TPMS
such as the spare tire, the TPMS will
not function and the low tire pres-
sure warning light will flash for ap-
proximately one minute. The light
will remain on af ter one minute. Have
your tires replaced and/or TPMS sys-
tem reset as soon as possible. It is
recommended that you visit a
NISSAN dealer for these services.
• 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.CHANGING A FLAT TIRE
If you have a flat tire, follow the instructions
below:
Stopping the vehicle
1. Safely move the vehicle off the road and away from traffic.
2. Turn on the hazard warning flashers.
FLAT TIRE
In case of emergency6-3