sensor NISSAN MAXIMA 2023 Repair Manual

I-FCW SYSTEM LIMITATIONS
WARNING
Listed below are the system limitations
for the I-FCW system. Failure to operate
the vehicle in accordance with these
system limitations could result in seri-
ous injury or death.
• The I-FCW system cannot detect all
vehicles under all conditions. •
The radar sensor does not detect the
following objects:
– Pedestrians, animals or obstacles
in the roadway
– Oncoming vehicles
– Crossing vehicles
• (Illustration A) The I-FCW system
does not function when a vehicle
ahead is a narrow vehicle, such as a
motorcycle.
•
The radar sensor may not detect a ve-
hicle ahead in the following conditions:
– Snow or heavy rain
– Dirt, ice, snow or other material
covering the radar sensor.
– Interference by other radar
sources.
– Snow or road spray from traveling
vehicles.
– Driving in a tunnel
– (Illustration B) When the vehicle
ahead is being towed.
– (Illustration C) When the distance
to the vehicle ahead is too close,
the beam of the radar sensor is
obstructed. –
(Illustration D) When driving on a
steep downhill slope or roads with
sharp curves.
• The system is designed to automati-
cally check the sensor’s functionality,
within certain limitations. The sys-
tem may not detect some forms of
obstruction of the sensor area such
as ice, snow, stickers, etc. In these
cases, the system may not be able to
warn the driver properly. Be sure that
you check, clean and clear the sensor
area regularly.
• Excessive noise will interfere with the
warning chime sound, and the chime
may not be heard.LSD2312
Illustration A
5-100Starting and driving

SYSTEM TEMPORARILY
UNAVAILABLE
Condition A
When the radar sensor picks up interfer-
ence from another radar source, making it
impossible to detect a vehicle ahead, the
I-FCW system is automatically turned off.
The AEB with Pedestrian Detection system
warning light will illuminate.
Action to take
When the above conditions no longer exist,
the I-FCW system will resume automati-
cally.
Condition B
When there is inclement weather (rain, fog,
snow, etc.) blocking the front radar sensor,
the AEB with Pedestrian Detection system
will automatically be canceled, the chime
will sound and the “Forward Driving Aids
temporarily disabled Front Sensor blocked
See Owner’s Manual” warning message will
appear in the vehicle information display.
Action to take:
When the conditions listed above are no
longer present, the warning message will
no longer be available in the vehicle infor-
mation display. If the “Forward Driving Aids
temporarily disabled Front Sensor blocked
LSD2377
5-104Starting and driving

See Owner’s Manual” warning message
continues to be displayed, have the system
checked. It is recommended that you visit a
NISSAN dealer for this service.
Condition C
When the radar sensor of the front bumper
is covered with mud, dirt, snow, ice, etc., or is
obstructed, the AEB with Pedestrian Detec-
tion system will automatically be canceled.
The chime will sound and the “Forward
Driving Aids temporarily disabled Front
Sensor blocked See Owner’s Manual”
warning message will appear in the vehicle
information display.
Action to take:
If the warning message appears, stop the
vehicle in a safe place, place the shif t lever
in the P (Park) position, and turn the engine
off. When the radar signal is temporarily
interrupted, clean the sensor area of the
front bumper and restart the engine. If the
“Forward Driving Aids temporarily disabled
Front Sensor blocked See Owner’s Manual”
warning message continues to be dis-
played, have the system checked. It is rec-
ommended that you visit a NISSAN dealer
for this service.Condition D
When driving on roads with limited road
structures or buildings (for example, long
bridges, deserts, snowfields, driving next to
long walls), the system may illuminate the
system warning light and display the “For-
ward Driving Aids temporarily disabled
Front Sensor blocked See Owner’s Manual”
message.
Action to take:
When the above driving conditions no lon-
ger exist, turn the system back on.
NOTE:
If the AEB with Pedestrian Detection sys-
tem stops working, the I-FCW system will
also stop working.SYSTEM MALFUNCTION
If the I—FCW system malfunctions, it will
be turned off automatically, a chime will
sound, the AEB with Pedestrian Detection
warning light (orange) will illuminate.
Action to take
If the warning light (orange) comes on, stop
the vehicle in a safe location, turn the
engine off and restart the engine. If the
warning light continues to illuminate, have
the I—FCW system checked. It is recom-
mended that you visit a NISSAN dealer for
this service.
LSD3963
Starting and driving5-105

SYSTEM MAINTENANCE
The sensorOAis located on the front of the
vehicle.
To keep the system operating properly, be
sure to observe the following:
• Always keep the sensor area of the front bumper clean.
•
Do not strike or damage the areas around
the sensor.
• Do not cover or attach stickers or similar objects on the front bumper near the
sensor area. This could cause failure or
malfunction. • Do not attach metallic objects near the
sensor area (brush guard, etc.). This could
cause failure or malfunction.
• Do not alter, remove or paint the front bumper. Before customizing or restoring
the front bumper, it is recommended that
you visit a NISSAN dealer.
FCC Notice
For USA
This device complies with Part 15 of the FCC
rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful inter- ference, and
2. This device must accept any interfer- ence received, including interference
that may cause undesired operation.
FCC Warning
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user’s authority
to operate the equipment. For Canada
This device complies with Industry Canada
licence-exempt RSS standard(s). Operation
is subject to the following two conditions:
1. This device may not cause interference,
2. This device must accept any interfer-
ence received, including interference
that may cause undesired operation of
the device.
LSD3382
5-106Starting and driving

Parking brake break-in
Break in the parking brake shoes whenever
the stopping effect of the parking brake is
weakened or whenever the parking brake
shoes and/or drums/rotors are replaced,
in order to assure the best braking
performance.
This procedure is described in the vehicle
service manual. It is recommended that
you visit a NISSAN dealer for this service.
ANTI-LOCK BRAKING SYSTEM (ABS)
WARNING
• The ABS is a sophisticated device, but
it cannot prevent accidents resulting
from careless or dangerous driving
techniques. It can help maintain ve-
hicle control during braking on slip-
pery surfaces. Remember that stop-
ping distances on slippery surfaces
will be longer than on normal sur-
faces even with ABS. Stopping dis-
tances may also be longer on rough,
gravel or snow covered roads, or if
you are using tire chains. Always
maintain a safe distance from the ve-
hicle in front of you. Ultimately, the
driver is responsible for safety. •
Tire type and condition may also af-
fect braking effectiveness.
– When replacing tires, install the
specified size of tires on all four
wheels.
–
When installing a spare tire, make sure that it is the proper size and
type as specified on the Tire and
Loading Information label. For ad-
ditional information, see “Tire and
Loading Information label” (P. 8-30).
– For additional information, see
“Wheels and tires” (P. 8-27).
The ABS controls the brakes so the wheels
do not lock during hard braking or when
braking on slippery surfaces. The system
detects the rotation speed at each wheel
and varies the brake fluid pressure to pre-
vent each wheel from locking and sliding.
By preventing each wheel from locking, the
system helps the driver maintain steering
control and helps to minimize swerving
and spinning on slippery surfaces.
Using the system
Depress the brake pedal and hold it down.
Depress the brake pedal with firm steady
pressure, but do not pump the brakes. The
Anti-lock Braking System will operate to prevent the wheels from locking up. Steer
the vehicle to avoid obstacles.
WARNING
Do not pump the brake pedal. Doing
so may result in increased stopping
distances.
Self-test feature
The Anti-lock Braking System (ABS) in-
cludes electronic sensors, electric pumps,
hydraulic solenoids and a computer. The
computer has a built-in diagnostic feature
that tests the system each time you start
the engine and move the vehicle at a low
speed in forward or reverse. When the self-
test occurs, you may hear a “clunk” noise
and/or feel a pulsation in the brake pedal.
This is normal and does not indicate a
malfunction. If the computer senses a
malfunction, it switches the ABS off and
illuminates the ABS warning light on the
instrument panel. The brake system then
operates normally but without anti-lock
assistance.
If the ABS warning light illuminates during
the self-test or while driving, have the ve-
hicle checked. It is recommended that you
visit a NISSAN dealer for this service.
5-114Starting and driving

Normal operation
The Anti-lock Braking System (ABS) oper-
ates at speeds above3-6mph(5-10
km/h). The speed varies according to road
conditions.
When the ABS senses that one or more
wheels are close to locking up, the actuator
rapidly applies and releases hydraulic pres-
sure. This action is similar to pumping the
brakes very quickly. You may feel a pulsa-
tion in the brake pedal and hear a noise
from under the hood or feel a vibration
from the actuator when it is operating. This
is normal and indicates that the ABS is op-
erating properly. However, the pulsation
may indicate that road conditions are haz-
ardous and extra care is required while
driving.
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
vehicle 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.
VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM
Starting and driving5-115

ACTIVE RIDE CONTROL (ARC)
This system senses upper body motion
(based on wheel speed information) and
controls engine torque and four wheel
brake pressure. This will enhance ride com-
fort in effort to restrain uncomfortable up-
per body movement when passing over
undulated road surfaces. This system
comes into effect above 25 mph (40 km/h).
When the VDC OFF switch is used to turn off
the VDC system, the ARC is also turned off.
If the Chassis Control System Error
warning message appears in the vehicle
information display, it may indicate that the
ARC is not functioning properly. Have the
system checked as soon as possible. It is
recommended that you visit a NISSAN
dealer for this service.
When the ARC is operating, you may hear
noise and sense slight deceleration. This is
normal and indicates that the ARC is oper-
ating properly.The sonar (parking sensor) system sounds
a tone to inform the driver of obstacles
near the bumper.
When the “DISPLAY” key is ON, the sonar
view will automatically appear in the meter.
WARNING
• The sonar (parking sensor) system is
a convenience but it is not a substi-
tute 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 sonar (parking sensor) system
as contained in this section. The col-
ors of the corner sonar indicator and
the distance guide lines in the front/
rear view indicate different 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
affect 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 pre-
vent contact with small or moving
objects. Always move slowly. The
system will not detect small objects
below the bumper, and may not de-
tect objects close to the bumper or
on the ground.
LSD2427
FRONT AND REAR SONAR SYSTEM
(if so equipped)
Starting and driving5-119

•The system may not detect the follow-
ing objects: fluff y objects such as
snow, cloth, cotton, glass, wool, etc.,
and thin objects such as rope, wire and
chain, etc., or wedge-shaped objects.
•The sonar sensors may cause mal-
function when a horn, etc. sounds or
there is an ultrasonic source (such as
parking sensors of other vehicles)
around the vehicle because the sonar
sensors detect the distance between
the vehicle and the obstacle by detect-
ing the sound wave reflected from the
surface of an obstacle.
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 front obstacles when the shif t
lever is in the D (Drive) position and both
front and rear obstacles when the shif t le-
ver is in the R (Reverse) position.
Sonar Operation Table
FR Sensor RR Sensor
Range Sound
DisplaySoundDisplay
Px†x†
Roooo
Nx†x† Do o x †
o – Display/Beep when detect
† – Display on camera view
x – No Display and Beep The system is deactivated at speeds above
6 mph (10 km/h). It is reactivated at lower
speeds.
While the vehicle is moving the audible alert
will stop af ter 3 seconds when an obstacle
is detected by only the corner sensor and
distance does not change. The audible
alert will also stop when the obstacle
moves away from the vehicle. At any time
the lef t side button of the steering wheel (
buttons) is available to cancel the au-
dible alert.
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.
5-120Starting and driving

HOW TO ENABLE/DISABLE THE
FRONT AND REAR 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:
1. Press the
button until “Settings” ap-
pears in the vehicle information display
and then press OK. Use the
button
to select “Driver Assistance.” Then press
the OK button.
2. Select “Parking Aids” and press the OK button.
3. Select “Sensor” and press the OK button, then select “ON”, “OFF” or “Front Only” (if
so equipped) and press the OK button.
• Select “Display” to display the parking sensor in the vehicle information dis-
play when the sonar system activates.
• Select “Volume” to change the volume to “High”, “Medium”, or “Low”.
• Select “Range” to change the sonar distance to “Near”, “Mid”, or “Far”.
LSD2820
5-122Starting and driving

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 sensorsOAandOBare located on
the front and rear bumpers. 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.
LSD4570
Starting and driving5-123