2020 NISSAN ALTIMA brakes

2Steering Assist indicatorIndicates the status of the Steering
Assist by the color of the indicator
∙ Steering Assist indicator (gray): Steer- ing Assist standby
∙ Steering Assist indicator (green): Steering Assist active
3Lane marker indicator
Indicates whether the system detects
the lane marker
∙ Lane marker indicator (gray): Lane markers not detected
∙ Lane marker indicator (green): Lane markers detected
∙ Lane marker indicator (yellow): Lane departure is detected
When the Steering Assist is in operation,
the Steering Assist status indicator
1, the
Steering Assist indicator
2, and the lane
marker indicator
3on the vehicle infor-
mation display turn green. A chime sounds
when the Steering Assist initially activates. When the Steering Assist deactivates, the
Steering Assist status indicator
1, the
Steering Assist indicator
2, and the lane
marker indicator
3on the vehicle infor-
mation display turn gray and a chime
sounds twice.
Intelligent Lane Intervention (I-LI)
When a curve or strong cross wind exceeds
the capabilities of the Steering Assist and
your vehicle approaches either the lef t or
the right side of the traveling lane, the I-LI
indicator (orange) on the instrument panel
flashes to alert the driver. Then, the I-LI sys-
tem automatically applies the brakes for a
short period of time to help assist the
driver to return the vehicle to the center of
the traveling lane. This action is in addition
to any Steering Assist actions.
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1RAB system warning light and RAB sys-
tem warning indicator
2Steering-wheel-mounted controls (lef t
side)
3Center display
RAB SYSTEM OPERATION
When the shif t lever is in the R (Reverse)
position and the vehicle speed is less than
approximately 9 mph (15 km/h), the RAB
system operates.
If a risk of a collision with an obstacle is de-
tected when your vehicle is backing up, the
RAB system warning indicator will flash in
the vehicle information display, a red frame
will appear in the center display (for vehicles
with the Intelligent Around View Monitor sys-
tem), and the system will chime three times.
The system will then automatically apply the
brakes. Af ter the automatic brake applica-
tion, the driver must depress the brake pedal
to maintain brake pressure.
NOTE:
∙ The brake lights of the vehicle come
on when braking is performed by the
RAB system.
∙ When the brakes operate, a noise may
be heard. This is not a malfunction.
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– An ultrasonic wave source, such asanother vehicle’s sonar, is near the
vehicle.
∙ Once the automatic brake control op- erates, it does not operate again if the
vehicle approaches the same
obstacle.
∙ The automatic brake control can only operate for a short period of time.
Therefore, the driver must depress
the brake pedal.
∙ In the following situations, the RAB system may not operate properly or
may not function sufficiently:
– The vehicle is driven in bad weather (rain, fog, snow, etc.).
– The vehicle is driven on a steep hill.
– The vehicle’s posture is changed (e.g., when driving over a bump).
– The vehicle is driven on a slippery road.
– The vehicle is turned sharply by turning the steering wheel fully.
– Snow chains are used. – Wheels or tires other than NISSAN
recommended are used.
– The brakes are cold at low ambient temperatures or immediately af ter
driving has started.
– The braking force becomes poor due to wet brakes af ter driving
through a puddle or washing the
vehicle.
∙ Turn the RAB system off in the follow- ing conditions to prevent the occur-
rence of an unexpected accident re-
sulting from sudden system
operation:
– The vehicle is towed.
– The vehicle is carried on a flatbed truck.
– The vehicle is on the chassis dynamometer.
– The vehicle drives on an uneven road surface. – Suspension parts other than those
designated as Genuine NISSAN
parts are used. (If the vehicle
height or the vehicle body inclina-
tion is changed, the system may
not detect an obstacle correctly.)
∙ Excessive noise (e.g., audio system volume, an open vehicle window) will
interfere with the chime sound, and it
may not be heard.
SYSTEM MALFUNCTION
If the RAB system malfunctions, it will be
turned off automatically, the RAB system
warning light will illuminate, and the “Sys-
tem fault” warning message will appear in
the vehicle information display.
Action to take
If the warning light illuminates, park the ve-
hicle in a safe location, turn the engine off,
and restart the engine. If the warning light
continues to illuminate, have the RAB sys-
tem checked. It is recommended that you
visit a NISSAN dealer for this service.
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1. Vehicle ahead detection indicator
2. AEB emergency warning indicator
3. AEB system warning light
AEB SYSTEM OPERATION
The AEB system will function when your
vehicle is driven at speeds above approxi-
mately 3 mph (5 km/h).
If a risk of a forward collision is detected,
the AEB system will provide an initial warn-
ing to the driver by both a visual and au-
dible alert.
If the driver applies the brakes quickly and
forcefully af ter the warning, and the AEB
system detects that there is still the possi-
bility of a forward collision, the system will
automatically increase the braking force. If
the driver does not take action, the AEB
system issues the second visual warning
and audible warning and also applies par-
tial braking.
If the risk of a collision becomes imminent,
the AEB system applies harder braking au-
tomatically.
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While the AEB system is operating, you may
hear the sound of brake operation. This is
normal and indicates that the AEB system
is operating properly.
NOTE:
The vehicle’s brake lights come on when
braking is performed by the AEB system.
Depending on vehicle speed and distance
to the vehicle ahead, as well as driving and
roadway conditions, the system may help
the driver avoid a forward collision or may
help mitigate the consequences of a colli-
sion, should one be unavoidable. If the
driver is handling the steering wheel, accel-
erating or braking, the AEB system will
function later or will not function.
The automatic braking will cease under the
following conditions:∙ When the steering wheel is turned as far as necessary to avoid a collision.
∙ When the accelerator pedal is de- pressed.
∙ When there is no longer a vehicle de- tected ahead. If the AEB system has stopped the vehicle,
the vehicle will remain at a standstill for
approximately 2 seconds before the
brakes are released.
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1. Vehicle ahead detection indicator
2. AEB with Pedestrian Detection emer-gency warning indicator
3. AEB with Pedestrian Detection system warning light
AEB WITH PEDESTRIAN
DETECTION SYSTEM OPERATION
The AEB system operates at speeds above
approximately 3 mph (5 km/h). For the pe-
destrian detection function, the system
operates at speeds between6–37mph
(10 – 60 km/h).
If a risk of a forward collision is detected,
the AEB with Pedestrian Detection system
will firstly provide the warning to the driver
by flashing the vehicle ahead detection in-
dicator (yellow) in the vehicle information
display and providing an audible alert. If the
driver applies the brakes quickly and force-
fully af ter the warning, and the AEB with
Pedestrian Detection system detects that
there is still the possibility of a forward col-
lision, the system will automatically in-
crease the braking force.
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If the driver does not take action, the AEB
with Pedestrian Detection system issues
the second visual (flashing) (red and white)
and audible warning. If the driver releases
the accelerator pedal, then the system ap-
plies partial braking. If the risk of a collision
becomes imminent, the AEB with Pedes-
trian Detection system applies harder
braking automatically.
While the AEB with Pedestrian Detection
system is operating, you may hear the
sound of brake operation. This is normal
and indicates that the AEB with Pedestrian
Detection system is operating properly.
NOTE:
The vehicle’s brake lights come on when
any braking is performed by the AEB
with Pedestrian Detection system.
Depending on vehicle speed and distance
to the vehicle or pedestrian ahead, as well
as driving and roadway conditions, the sys-
tem may help the driver avoid a forward
collision or may help mitigate the conse-
quences if a collision should be unavoid-
able. If the driver is handling the steering
wheel, accelerating or braking, the AEB with
Pedestrian Detection system will function
later or will not function.The automatic braking will cease under the
following conditions:
∙ When the steering wheel is turned to avoid a collision.
∙ When the accelerator pedal is de- pressed.
∙ When there is no longer a vehicle or a pedestrian detected ahead.
If the AEB with Pedestrian Detection sys-
tem has stopped the vehicle, the vehicle
will remain at a standstill for approximately
2 seconds before the brakes are released.
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The brake system has two separate hy-
draulic circuits. If one circuit malfunctions,
you will still have braking at two wheels.
BRAKE PRECAUTIONS
Vacuum assisted brakes
The brake booster aids braking by using
engine vacuum. If the engine stops, you
can stop the vehicle by depressing the
brake pedal. However, greater foot pres-
sure on the brake pedal will be required to
stop the vehicle and stopping distance will
be longer.
Using the brakes
Avoid resting your foot on the brake pedal
while driving. This will overheat the brakes,
wear out the brake pads faster, and reduce
gas mileage.
To help reduce brake wear and to prevent
the brakes from overheating, reduce speed
and downshif t to a lower gear before going
down a slope or long grade. Overheated
brakes may reduce braking performance
and could result in loss of vehicle control.
WARNING
∙ While driving on a slippery surface, becareful when braking, accelerating or
downshif ting. Abrupt braking or ac-
celerating could cause the wheels to
skid and result in an accident.
∙ If the engine is not running or is turned off while driving, the power as-
sist for the brakes will not work. Brak-
ing will be harder.
Wet brakes
When the vehicle is washed or driven
through water, the brakes may get wet. As
a result, your braking distance will be lon-
ger and the vehicle may pull to one side
during braking.
To dry the brakes, drive the vehicle at a safe
speed while lightly pressing the brake
pedal to heat up the brakes. Do this until
the brakes return to normal. Avoid driving
the vehicle at high speeds until the brakes
function correctly.
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 perfor-
mance.
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 vehicle in
front of you. Ultimately, the driver is
responsible for safety.
∙ Tire type and condition may also af- fect braking effectiveness.
BRAKE SYSTEM
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