service NISSAN LEAF 2021 Owner´s Manual

SYSTEM TEMPORARILY
UNAVAILABLECondition A
When the radar sensor picks up interfer-
ence from another radar source, making itimpossible to detect a vehicle ahead, the
I-FCW system is automatically turned off.
The AEB with Pedestrian Detection system
warning light (orange) will illuminate.
Action to take
When the above conditions no longer exist,
the I-FCW system will resume
automatically.
Condition B
In the following condition, the AEB with Pe-
destrian Detection system warning light
(orange) will illuminate and the "Forward
Driving Aids temporarily disabled. Front
Sensor blocked. See Owner’s Manual"
warning message will appear in the vehicle
information display.
• The sensor area on the front of the ve-
hicle is covered with dirt or is obstructed.
Action to take
If the warning light (orange) comes on, stop
the vehicle in a safe place and turn the EV
system off. Clean the radar cover on the on
the front of the vehicle with a sof t cloth, and
restart the EV system. If the warning light
continues to illuminate, have the I-FCW sys-
tem checked. It is recommended that you
visit a NISSAN certified LEAF dealer for this
service.
LSD4077
5-146Starting and driving

• When driving on roads with limited roadstructures or buildings (for example, long
bridges, deserts, snow fields, driving next
to long walls).
Action to take
When the above conditions no longer exist,
the AEB with Pedestrian Detection system
will resume automatically.
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
system warning light (orange) will illumi-
nate and the warning message “Malfunc-
tion: See Owner’s Manual” will appear in the
vehicle information display. Action to take:
If the warning light (orange) comes on, stop
the vehicle in a safe location, turn the EV
system off and restart the EV system. If the
warning light continues to illuminate, have
the AEB with Pedestrian Detection system
checked. It is recommended that you visit a
NISSAN certified LEAF dealer for this serviceSYSTEM 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.
LSD2859
Starting and driving5-147

–If you have adopted a sporty driv-
ing style with higher cornering
speeds or higher rates of
acceleration.
– Frequent lane changes or
changes to vehicle speed.
• The I–DA system will not provide an
alert in the following conditions:
– Vehicle speeds lower than 37 mph
(60 km/h).
– Short lapses of attention.
– Instantaneous distractions such
as dropping an object.
System malfunction
If the Intelligent Driver Alertness system
malfunctions, the system warning mes-
sage will appear in the vehicle information
display and the function will be stopped
automatically. Action to take
Stop the vehicle in a safe location, place the
vehicle in P (Park) position, turn the EV sys-
tem off and restart the EV system. If the
system warning message continues to ap-
pear, have the system checked. It is recom-
mended that you visit a NISSAN certified
LEAF dealer for this service.
LSD3958
Starting and driving5-151

WARNING
• If the READY to drive indicator light is
off while driving, the power assist for
the steering will not work. Steering
will be harder to operate.
• When the power steering warning
light illuminates while the READY to
drive indicator light is on, the power
assist for the steering will cease op-
eration. You will still have control of
the vehicle but the steering will be
harder to operate.
The power steering system is designed to
provide power assistance while driving to
operate the steering wheel with less effort.
When the steering wheel is operated re-
peatedly or continuously while parking or
driving at a very low speed, the power as-
sist for the steering wheel will be reduced.
This is to prevent overheating of the power
steering system and help protect it from
getting damaged. When the power assis-
tance is reduced, steering wheel operation
will become harder. When the temperature
of the power steering system goes down,
the power assistance level will return to
normal. Avoid repeating such steering
wheel operations that could cause the
power steering system to overheat. You may hear a noise when the steering
wheel is operated quickly. However, this is
not a malfunction.
If the power steering warning light
illuminates while the READY to drive indica-
tor light is on, it may indicate the power
steering system is not functioning properly
and may need servicing. Have the power
steering system checked. It is recom-
mended that you visit a NISSAN certified
LEAF dealer for this service. For additional
information, see “Power steering warning
light” (P. 2-23).
The power assist for steering stops operat-
ing when both the power steering warning
light and READY to drive indicator light are
illuminated. You will still have control of the
vehicle. However, greater steering effort is
needed, especially in sharp turns and at
low speeds.
BRAKE PRECAUTIONS
This vehicle is equipped with two braking
systems:
1. Hydraulic brake system
2. Regenerative brake system
Hydraulic brake system
The hydraulic brake system is similar to the
brakes used on conventional vehicles.
The brake system has two separate hy-
draulic circuits. If one circuit malfunctions,
you will still have braking at two wheels.
Regenerative brake system
The primary purpose of the regenerative
brake system is to provide some power to
help recharge the Li-ion battery and ex-
tend driving range. A secondary benefit is
“engine braking” that operates based on
battery conditions.
In the D (Drive) range, when the accelerator
is released, the regenerative brake system
provides some deceleration and gener-
ates power for the Li-ion battery. Power is
also generated when the brake pedal is
applied.
POWER STEERING SYSTEM
BRAKE SYSTEM
5-156Starting and driving

Wet brakes
When the vehicle is washed or driven
through water, the brakes may get wet. As
a result, the braking distance will be longer
and the vehicle may pull to one side during
braking.
To dry brakes, drive the vehicle at a safe
speed while lightly tapping 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
have dried.
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 rotors are replaced, in order
to assure the best braking performance.
This procedure is described in the Genuine
NISSAN Service Manual, and it can be per-
formed by a certified repair facility. It is rec-
ommended that you visit a NISSAN certi-
fied LEAF dealer.
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.
– For additional information, see
“Wheels and tires” (P. 8-25). 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.
5-158Starting and driving

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 place
the power switch in the READY to drive po-
sition 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 mal-
function. If the computer senses a mal-
function, it switches the ABS off and illumi-
nates 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 certified LEAF dealer for this
service.
Normal operation
The Anti-lock Braking System (ABS) oper-
ates at speeds above 3 to 6 mph (5 to 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
drivers 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 drive wheel on the
same axle that is not slipping.
• Controls brake pressure and traction motor output to reduce drive wheel slip
based on vehicle speed (traction control
function).
• Controls brake pressure at individual wheels and traction motor 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 main-
tain control of the vehicle, but it cannot
prevent loss of vehicle control in all driving
situations.
VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM
Starting and driving5-159

INTELLIGENT TRACE CONTROL
This system senses driving based on the
driver’s steering and acceleration/braking
patterns, and controls brake pressure at
individual wheels to aid tracing at corners
and help smooth vehicle response.
The Intelligent Trace Control can be set to
on (enabled) or off (disabled) through the
vehicle information display “Settings” page.
For additional information, see “Vehicle in-
formation display” (P. 2-26).
When the VDC system is turned off in the
vehicle information display, the Intelligent
Trace Control is also turned off.When the Intelligent Trace Control is oper-
ated and the “Chassis Control” mode is se-
lected in the vehicle information display,
the Intelligent Trace Control graphics are
shown in the vehicle information display.
For additional information, see “Vehicle in-
formation display” (P. 2-26).
If the “Chassis Control System Error: See
Owner’s Manual” warning message ap-
pears in the vehicle information display, it
may indicate that the Intelligent Trace Con-
trol is not functioning properly. Have the
system checked as soon as possible. It is
recommended that you visit a NISSAN cer-
tified LEAF dealer for this service.
WARNING
The Intelligent Trace Control may not
be effective depending on the driving
condition. Always drive carefully and
attentively.
When the Intelligent Trace Control is oper-
ating, you may feel a pulsation in the brake
pedal, hear a noise and sense slight decel-
eration. This is normal and indicates that
the Intelligent Trace Control is operating
properly.
Even if the Intelligent Trace Control is
turned off, some functions will remain on to
assist the driver (for example, avoidance
scenes).
INTELLIGENT RIDE CONTROL
This system senses upper body motion
(based on wheel speed information) and
controls motor torque. This will enhance
ride comfort in effort to restrain uncom-
fortable upper body movement when
passing over undulated road surfaces. This
system comes into effect above 25 mph
(40 km/h).
When the VDC system is turned off in the
vehicle information display, the Intelligent
Ride Control is also turned off.
LSD3008
5-162Starting and driving

WARNING
The Intelligent Ride Control may not be
effective depending on the driving con-
dition. Always drive carefully and
attentively.
When the Intelligent Ride Control is operat-
ing, you may hear a noise and sense slight
deceleration. This is normal and indicates
that the Intelligent Ride Control is operat-
ing properly.
If the “Chassis Control System Error: See
Owner’s Manual” warning message ap-
pears in the vehicle information display, it
may indicate that the Intelligent Ride Con-
trol is not functioning properly. Have the
system checked as soon as possible. It is
recommended that you visit a NISSAN cer-
tified LEAF dealer for this service. 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 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 sonar indicator
and the distance guide lines in the
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 af-
fect the function of the system; this
may include reduced performance or
a false activation.
• The RSS is designed as an aid to the
driver in detecting large stationary
objects to help avoid damaging the
vehicle.
• The RSS is not designed to prevent
contact with small or moving ob-
jects. Always move slowly. The sys-
tem will not detect small objects be-
low the bumper, and may not detect
objects close to the bumper or on the
ground.
• The RSS may not detect the following
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.
LSD3247
REAR SONAR SYSTEM (RSS) (if so
equipped)
Starting and driving5-163

Push the switch on to warn other drivers
when you must stop or park under emer-
gency conditions. All turn signal lights will
flash.
WARNING
• If stopping for an emergency, be sure
to move the vehicle well off the road.
• Do not use the hazard warning flash-
ers while moving on the highway un-
less unusual circumstances force
you to drive so slowly that your ve-
hicle might become a hazard to other
traffic.
• Turn signals do not work when the
hazard warning flasher lights are on.
The flasher can be actuated with the
power switch in any position.
Some jurisdictions may prohibit the use
of the hazard warning flasher switch
while driving. In the event of a roadside emergency,
Roadside Assistance Service is available to
you. For additional information, please refer
to your Warranty Information Booklet (U.S.)
or Warranty & Roadside Assistance Infor-
mation Booklet (Canada) for details.
SIC2574
HAZARD WARNING FLASHER SWITCH
ROADSIDE ASSISTANCE PROGRAM
6-2In case of emergency

To shut off the EV system in an emergency
situation while driving, perform the follow-
ing procedure.
• Rapidly push the power switch three con-secutive times in less than 1.5 seconds, or
• Push and hold the power switch for more than 2 seconds.TIRE PRESSURE MONITORING
SYSTEM (TPMS)
This vehicle is equipped with TPMS. It moni-
tors tire pressure of all tires. When the low
tire pressure warning light is lit, and the “Tire
Pressure Low — Add Air” warning appears
on the vehicle information display, one or
more of your tires is significantly 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 warn-
ing light. This system will activate only
when the vehicle is driven at speeds above
16 mph (25 km/h). For additional informa-
tion, see “Warning lights, indicator lights
and audible reminders” (P. 2-14) and “Tire
Pressure Monitoring System (TPMS)” (P. 5-4).
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 underinflated 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-
pair it as soon as possible. If no tire is
flat and all tires are properly inflated,
have the vehicle checked. It is recom-
mended that you visit a certified
LEAF dealer for this service.
EMERGENCY EV (Electric Vehicle)
SHUT OFF FLAT TIRE
In case of emergency6-3