2019 NISSAN LEAF ECU

Inside vehicle
The maintenance items listed here should
be checked on a regular basis, such as
when performing scheduled maintenance,
cleaning the vehicle, etc.
Accelerator pedal:Check the pedal for
smooth operation and make sure that the
pedal does not catch or require uneven
effort. Keep the floor mat away from the
pedal.
Brake pedal: Check the pedal for smooth
operation. If the brake pedal suddenly goes
down further than normal, the pedal feels
spongy or the vehicle seems to take longer
to stop, it is recommended that you visit a
NISSAN certified LEAF dealer immediately.
Keep the floor mat away from the pedal.
Brakes: Check that the brakes do not pull
the vehicle to one side when applied.
Electric shif t P (Park) position mecha-
nism: On a steep hill, check that the vehicle
is held securely while the vehicle is in the P
(Park) position without applying the brakes. Parking brake:
Check the parking brake
operation regularly. The vehicle should be
securely held on a steep hill with only the
parking brake applied. If the parking brake
cannot keep a vehicle position, it is recom-
mended that you visit a NISSAN certified
LEAF dealer for this service.
Seat: Check seat position controls such as
the seat adjusters, seatback recliners, etc.
to ensure that they operate smoothly and
that all latches lock securely in every posi-
tion. Check that the head restraints/
headrests move up and down smoothly
and that the locks (if so equipped) hold
securely in all latched positions.
Seat belts: Check that all parts of the seat
belt system (for example, buckles, anchors,
adjusters and retractors) operate properly
and smoothly, and are installed securely.
Check the belt webbing for cuts, fraying,
wear or damage.
Steering wheel: Check for changes in the
steering conditions, such as excessive free
play, hard steering or strange noises. Warning lights and chimes:
Make sure
that all warning lights and chimes are op-
erating properly.
Windshield defroster: Check that the air
emits from the defroster outlets properly
and in sufficient quantity when operating
the heater or air conditioner.
Windshield wiper and washer*: Check
that the wipers and washers operate prop-
erly and that the wipers do not streak.
Under hood and vehicle
The maintenance items listed here should
be checked periodically.
12-volt battery (except for maintenance
free batteries)*: Check the fluid level in
each cell. The fluid should be at the bottom
of the filler opening. Vehicles operated in
high temperatures or under severe condi-
tions require frequent checks of the 12–volt
battery fluid level.
8-4Maintenance and do-it yourself

• Park the vehicle on a level surface,apply the parking brake securely
and chock the wheels to prevent the
vehicle from moving. Push the P
(Park) position switch on the shif t
lever or place the vehicle into the N
(Neutral) position.
• If you must work with the EV (Electric Vehicle) system is turned on, keep
hands, clothing, hair and tools away
from moving fans and any other
moving parts.
• Make sure that the power switch is in the OFF or LOCK position when per-
forming any part replacement or re-
pairs.
• It is advisable to secure or remove any loose clothing and remove any
jewelry, such as rings, watches, etc.
before working on your vehicle.
• Always wear eye protection when- ever you work on your vehicle.
• Never get under the vehicle while it is supported only by a jack. If it is
necessary to work under the vehicle,
support it with safety stands.
•
Keep smoking materials, flames and
sparks away from the 12-volt battery.
CAUTION
• Do not work under the hood while the motor compartment is hot. Push
the power switch in the OFF position
and wait until it cools down.
• Avoid direct contact with used cool- ant. Improperly disposed coolant
and/or other vehicle fluids can dam-
age the environment. Always con-
form to local regulations for the dis-
posal of vehicle fluids.
• Never connect or disconnect the battery or any transistorized com-
ponent while the power switch is in
the ON position.
• Your vehicle is equipped with an au- tomatic cooling fan. It may come on
at any time without warning, even if
the power switch is not in the ACC,
ON or READY to drive position. To
avoid injury, always disconnect the
negative 12-volt battery cable be-
fore working near the fan.
• Before performing any electrical maintenance work on the vehicle
such as the battery, fuses or bulb re-
placement, confirm the following:
– The charge connector is removedfrom the vehicle. – The Climate Ctrl. Timer is not ac-
tive or operating. For additional
information, refer to “Climate Ctrl.
Timer” in the “Monitor, climate, au-
dio, phone and voice recognition
systems” section of this manual.
– The 12-volt battery is not being charged by the Li-ion battery and
that all charging status indicator
lights are off. For additional infor-
mation, refer to “Charging the 12-
volt battery ” in the “EV overview”
section and “Charging status indi-
cator lights” in the “Charging” sec-
tion of this manual.
• The power switch is in the OFF posi- tion. Place the power switch in the
ON position and then in the OFF po-
sition to prevent the 12-volt battery
automatically being charged by the
Li-ion battery. For additional infor-
mation, refer to “Charging the 12-
volt battery ” in the “EV overview”
section of this manual.
The “Maintenance and do-it-yourself ” sec-
tion gives instructions regarding only
those items that are relatively easy for an
owner to perform.
8-6Maintenance and do-it yourself

CHECKING COOLANT LEVEL
Check the coolant levelin the reservoir
when the high-voltage parts are cold. If
the coolant level is below the MIN level
B,
open the reservoir cap and add coolant up
to the MAX level
A. If the reservoir is empty,
check the coolant level in the coolant res-
ervoir when the high-voltage parts are
cold. If there is insufficient coolant in the
coolant reservoir, fill the coolant reservoir
with coolant up to the reservoir cap open-
ing and also add it to the reservoir up to the
MAX level
A. Tighten the cap securely af ter adding cool-
ant.
For additional information on the location
of the coolant reservoir, refer to “Motor
compartment check locations” in this sec-
tion.
If the cooling system frequently requires
coolant, it is recommended that you visit
a NISSAN certified LEAF dealer.
CHANGING COOLANT
It is recommended that major cooling sys-
tem repairs should be performed by a
NISSAN certified LEAF dealer. The service
procedures can be found in the appropri-
ate NISSAN Service Manual.
Improper servicing can result in reduced
heater performance.
WARNING
•
To avoid the danger of being scalded,
never change the coolant when the
motor compartment is hot.
• Never remove the coolant reservoir cap when the motor compartment is
hot. Serious burns could be caused
by high-pressure fluid escaping
from the radiator.
• Avoid direct skin contact with used coolant. If skin contact is made,
wash thoroughly with soap or hand
cleaner as soon as possible.
• Keep coolant out of reach of children and pets.
Coolant must be disposed of properly.
Check your local regulations.
Maintenance and do-it yourself8-9

• Keep the 12-volt battery surface clean anddry. Clean the 12-volt battery with a solu-
tion of baking soda and water.
• Make certain the terminal connections are clean and securely tightened.
12-VOLT BATTERY
8-12Maintenance and do-it yourself

Replace the battery in the Intelligent Key as
follows:
1. Remove the mechanical key from theIntelligent Key. 2. Insert a small screwdriver into the slit of
the corner and twist it to separate the
upper part from the lower part. Use a
cloth to protect the casing.
3. Replace the battery with a new one.
Recommended battery:
CR2025 or equivalent
• Do not touch the internal circuit and electric terminals as doing so could
cause a malfunction.
• Hold the battery by the edges. Holding the battery across the contact points
will seriously deplete the storage ca-
pacity.
• Make sure that the side faces the
bottom of the case. 4. Align the tips of the upper and lower
parts
1, and then push them together
2until it is securely closed.
5. Operate the buttons to check that it is functioning properly.
It is recommended that you visit a NISSAN
certified LEAF dealer for this service.
Maintenance and do-it yourself8-23

If you plan to operate your vehicle in snowy
or icy conditions, NISSAN recommends the
use of SNOW tires or ALL SEASON tires on all
four wheels.
Snow tires
If snow tires are needed, it is necessary to
select tires equivalent in size and load rat-
ing to the original equipment tires. If you do
not, it can adversely affect the safety and
handling of your vehicle.
Generally, snow tires will have lower speed
ratings than factory equipped tires and
may not match the potential maximum
vehicle speed. Never exceed the maximum
speed rating of the tire.
If you install snow tires, they must be the
same size, brand, construction and tread
pattern on all four wheels.
For additional traction on icy roads, stud-
ded tires may be used. However, some U.S.
states and Canadian provinces prohibit
their use. Check local, state and provincial
laws before installing 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.
TIRE CHAINS
Use of tire chains may be prohibited ac-
cording to location. Check the local laws
before installing tire chains. When installing
tire chains, make sure they are the proper
size for the tires on your vehicle and are
installed according to the chain manufac-
turer’s suggestions.
Use only SAE Class S chains.Class “S”
chains are used on vehicles with restricted
tire to vehicle clearance. Vehicles that can
use Class “S” chains are designed to meet
the SAE standard minimum clearances be-
tween the tire and the closest vehicle sus-
pension or body component required to
accommodate the use of a winter traction
device (tire chains or cables). The minimum
clearances are determined using the fac-
tory equipped tire size. Other types may
damage your vehicle.
Use chain tensioners when recommended
by the tire chain manufacturer to ensure a
tight fit. Loose end links of the tire chain
must be secured or removed to prevent
the possibility of whipping action damage
to the fenders or underbody. If possible,
avoid fully loading your vehicle when using tire chains. In addition, drive at a reduced
speed. Otherwise, your vehicle may be
damaged and/or vehicle handling and
performance may be adversely affected.
Tire chains must be installed only on the
front wheels and not on the rear wheels.
Do not use tire chains on dry roads. Driving
with tire chains in such conditions can
cause damage to the various mechanisms
of the vehicle due to some overstress.
Maintenance and do-it yourself8-37

Also check tires for proper inflation
pressures. For additional informa-
tion, refer to “Tire and Loading Infor-
mation label” in this section.
LOADING TIPS
• The GVW must not exceed theGVWR or GAWR.
• Do not load the front and rear axle to the GAWR. Doing so will exceed
the GVWR.
WARNING
•
Properly secure all cargo with
ropes or straps to help prevent
it from sliding or shif ting. Do not
place cargo higher than the
seatbacks. In a sudden stop or
collision, unsecured cargo could
cause personal injury.
•Do not load your vehicle any
heavier than the GVWR or the
maximum front and rear
GAWRs. If you do, parts of your
vehicle can break, tire damage
could occur, or it can change
the way your vehicle handles.
This could result in loss of con-
trol and cause personal injury.
•Overloading not only can
shorten the life of your vehicle
and the tire, but can cause un-
safe vehicle handling and lon-
ger braking distances. This
may cause a premature tire
failure, which could result in a
serious accident and personal
injury. Failures caused by over-
loading are not covered by the
vehicle’s warranty.
MEASUREMENT OF WEIGHTS
Secure loose items to prevent
weight shif ts that could affect the
balance of your vehicle. When the ve-
hicle is loaded, drive to a scale and
weigh the front and the rear wheels
separately to determine axle loads.
Individual axle loads should not ex-
ceed either of the Gross Axle Weight
Ratings (GAWR). The total of the axle
loads should not exceed the Gross
Vehicle Weight Rating (GVWR). These
ratings are given on the vehicle cer-
tification label. If weight ratings are
exceeded, move or remove items to
bring all weights below the ratings.
9-12
Technical and consumer information

You may notif y NISSAN by contact-
ing our Consumer Affairs Depart-
ment, toll-free, at 1-800-NISSAN-1.
For Canada
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you
should immediately inform Trans-
port Canada in addition to notif ying
NISSAN.
If
Transport Canada receives com-
plaints, it may open an investigation,
and if it finds that a safety defect
exists in a group of vehicles, it may
request that
NISSAN conduct a recall
campaign. However, Transport Canada
cannot become involved in individual
problems between you, your dealer, or
NISSAN.
You may contact Transport Canada's
Defect Investigations and Recalls
Division toll free at 1-800-333-0510.
You may also report safety defects
online at: https://wwwapps.tc.gc.ca/
Saf-Sec-Sur/7/PCDB-BDPP/fc-
cp.aspx?lang=eng (English speakers)
or https://wwwapps.tc.gc.ca/
Saf-Sec-Sur/7/PCDB-BDPP/fc-
cp.aspx?lang=fra (French speakers)
Additional information concerning
motor vehicle safety may be obtained
from Transport Canada's Road Safety
Information Centre at 1-800-333-0371
or online at www.tc.gc.ca/roadsafety
(English speakers) or www.tc.gc.ca/
securiteroutiere (French speakers).
To notif y NISSAN of any safety con-
cerns please contact our Consumer
Information Centre toll free at
1-800-387-0122.
In addition to Event Data Recorders (EDRs)
mentioned in this Owner's Manual, this ve-
hicle is equipped with electronic modules
that monitor, control and record data con-
cerning various vehicle systems, including
the motor, batteries, braking and electrical
systems. Other electronic modules record
information concerning driving conditions,
including idling, braking, acceleration, trip
and other related data, information about
your use of the car and its features such as
air conditioner or headlight usage, diag-
nostic trouble codes, vehicle charging, ve-
hicle speed, direction and/or location.
Some of this data is stored by the vehicle for
use during vehicle servicing. Other data con-
cerning your vehicle's operation and perfor-
mance is wirelessly transmitted by cellular
connection through the vehicle onboard
telematics system upon vehicle start-up or
at other intervals to NISSAN. This data may
be used by NISSAN for various purposes, in-
cluding: to provide you with NissanConnect®
EV & Services or NissanConnect® Services
(For additional information, refer to
“NissanConnect® Manual (for Leaf )”.); trouble-
shooting; evaluation of your vehicle's quality,
functionality and performance; analysis and
TELEMATICS OVERVIEW (MODELS
WITH NAVIGATION SYSTEM)
Technical and consumer information9-15