2015 NISSAN ALTIMA tire size

To increase your confidence in the seat belts,
check the operation as follows:● Grasp the shoulder belt and pull forward
quickly. The retractor should lock and re-
strict further belt movement.
If the retractor does not lock during this check or
if you have any questions about seat belt opera-
tion, see a NISSAN dealer.
Shoulder belt height adjustment (front
seats)
The shoulder belt anchor height should be ad-
justed to the position best for you. For additional
information, refer to “Precautions on seat belt
usage” in this section. To adjust, pull out the
adjustment button
1and move the shoulder belt
anchor to the desired position
2, so the belt
passes over the center of the shoulder. The belt
should be away from your face and neck, but not
falling off your shoulder. Release the adjustment
button to lock the shoulder belt anchor into posi-
tion.
WARNING
● After adjustment, release the adjust-
ment button and try to move the shoul-
der belt anchor up and down to make
sure it is securely fixed in position.
● The shoulder belt anchor height should
be adjusted to the position best for you.
Failure to do so may reduce the effec-
tiveness of the entire restraint system
and increase the chance or severity of
injury in an accident.
SEAT BELT EXTENDERS
If, because of body size or driving position, it is
not possible to properly fit the lap/shoulder belt
and fasten it, an extender that is compatible with
the installed seat belts is available for purchase.
The extender adds approximately 8 in (200 mm)
of length and may be used for either the driver or
front passenger seating position. See a NISSAN
dealer for assistance with purchasing an ex-
tender if an extender is required.LRS0242
Safety—Seats, seat belts and supplemental restraint system1-17

●If the light illuminates while driving,
avoid sudden 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 in-
crease the likelihood of tire failure. Se-
rious vehicle damage could occur and
may lead to an accident and could result
in serious personal injury. Check the
tire pressure for all four tires. Adjust the
tire pressure to the recommended
COLD tire pressure shown on the Tire
placard located in the driver’s door
opening to turn the low tire pressure
warning light OFF. If the light still
comes on while driving after adjusting
the tire pressure, a tire may be flat. If
you have a flat tire, replace it with a
spare tire as soon as possible.
● When a spare tire is mounted or a wheel
is replaced, tire pressure will not be
indicated, the TPMS will not function
and the low tire pressure warning light
will flash for approximately 1 minute.
The light will remain on after 1 minute.
Contact a NISSAN dealer as soon as
possible for tire replacement and/or
system resetting. ●
Replacing tires with those not originally
specified by NISSAN could affect the
proper operation of the TPMS.
CAUTION
●The TPMS is not a substitute for the
regular tire pressure check. Be sure to
check the tire pressure regularly.
● If the vehicle is being driven at speeds
of less than 16 MPH (25 km/h), the
TPMS may not operate correctly.
● Be sure to install the specified size of
tires to the 4 wheels correctly.
Master warning light
When the ignition is in the ON position, the master
warning light illuminates if any of the following are
displayed on the vehicle information display.
● No key warning
● Low fuel warning
● Low windshield-washer fluid warning
● Parking brake release warning
● Door/trunk open warning
● Loose fuel cap
● Check tire pressure warning
Power steering warning light
WARNING
●If the engine is not running or is turned
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 with the engine running,
there will be no power assist for the
steering. You will still have control of
the vehicle, but the steering will be
much harder to operate. Have the power
steering system checked by a NISSAN
dealer.
When the ignition switch is in the ON position,
the power steering warning light illuminates. After
starting the engine, the power steering warning
light turns off. This indicates that the electric
power steering system is operational. If the
power steering warning light illuminates while the
engine is running, it may indicate the power
steering system is not functioning properly and
may need servicing. Have the hydraulic pump
electric power steering system checked by a
NISSAN dealer. For additional information, refer
to “Power steering” in the “Starting and driving”
section of this manual.
Instruments and controls2-13

Vehicle width guide lines5:
Indicates the vehicle width when backing up.
HOW TO PARK WITH PREDICTED
COURSE LINES
WARNING
● Always turn and check that it is safe to
do so before backing up. Always back
up slowly.
● Use the displayed lines as a reference.
The lines are highly affected by the
number of occupants, fuel level, vehicle
position, road conditions and road
grade.
● If the tires are replaced with different
sized tires, the predicted course lines
may be displayed incorrectly.
● On a snow-covered or slippery road,
there may be a difference between the
predicted course line and the actual
course line.
● If the battery is disconnected or be-
comes discharged, the predicted course
lines may be displayed incorrectly. If
this occurs, please perform the follow-
ing procedures: – Turn the steering wheel from lock to
lock while the engine is running.
– Drive the vehicle on a straight road for more than 5 minutes.
● When the steering wheel is turned with
the ignition switch in the ACC position,
the predicted course lines may be dis-
played incorrectly.
● The distance guide line and the vehicle
width line should be used as a reference
only when the vehicle is on a level
paved surface. The distance viewed on
the monitor is for reference only and
may be different than the actual dis-
tance between the vehicle and dis-
played objects.
● When backing up the vehicle up a hill,
objects viewed in the monitor are fur-
ther than they appear. When backing up
the vehicle down a hill, objects viewed
in the monitor are closer than they ap-
pear. Use the inside mirror or glance
over your shoulder to properly judge
distances to other objects.
The vehicle width and predicted course
lines are wider than the actual width and
course. 1. Visually check that the parking space is safe
before parking your vehicle.
2. The rear view of the vehicle is displayed on the screen
Awhen the shift lever is moved
to the R (Reverse) position.
LHA1197
4-18Monitor, climate, audio, phone and voice recognition systems

CAUTION
●Do not use leaded gasoline. Deposits
from leaded gasoline will seriously re-
duce the three-way catalyst’s ability to
help reduce exhaust pollutants.
● Keep your engine tuned up. Malfunc-
tions in the ignition, fuel injection, or
electrical systems can cause overrich
fuel flow into the three-way catalyst,
causing it to overheat. Do not keep driv-
ing if the engine misfires, or if notice-
able loss of performance or other un-
usual operating conditions are
detected. Have the vehicle inspected
promptly by a NISSAN dealer.
● Avoid driving with an extremely low fuel
level. Running out of fuel could cause
the engine to misfire, damaging the
three-way catalyst.
● Do not race the engine while warming it
up.
● Do not push or tow your vehicle to start
the engine.
TIRE PRESSURE MONITORING
SYSTEM (TPMS)
Each tire, including the spare (if provided) ,
should be checked monthly when cold and in-
flated to the inflation pressure recommended by
the vehicle manufacturer on the vehicle placard
or tire inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the placard or tire inflation pressure label, you
should determine the proper tire inflation pres-
sure for those tires.)
As an added safety feature, your vehicle has been
equipped with a Tire Pressure Monitoring System
(TPMS) that illuminates a low tire pressure telltale
when one or more of your tires is significantly
under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire to over-
heat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life, and
may affect the vehicle’s handling and stopping
ability. Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver’s
responsibility to maintain correct tire pressure,
even if under-inflation has not reached the level to
trigger illumination of the TPMS low tire pressure
telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when the
system is not operating properly. The TPMS mal-
function indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi-
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the mal-
function exists. When the malfunction indicator is
illuminated, the system may not be able to detect
or signal low tire pressure as intended. TPMS
malfunctions may occur for a variety of reasons,
including the installation of replacement or alter-
nate tires or wheels on the vehicle that prevent
the TPMS from functioning properly. Always
check the TPMS malfunction telltale after replac-
ing one or more tires or wheels on your vehicle to
ensure that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
Starting and driving5-3

The brake system has two separate hydraulic
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 pressure on the brake pedal will be
required to stop the vehicle and stopping dis-
tance 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
downshift 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, be
careful when braking, accelerating or
downshifting. Abrupt braking or accel-
erating 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 assist for
the brakes will not work. Braking 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 longer 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
effect of the parking brake is weakened or when-
ever the parking brake shoes and/or drum/rotors
are replaced, in order to assure the best brake
performance. This procedure is described in the vehicle service
manual and can be performed by a NISSAN
dealer.
ANTI-LOCK BRAKING SYSTEM
(ABS)
WARNING
●
The Anti-lock Braking System (ABS) is a
sophisticated device, but it cannot pre-
vent accidents resulting from careless
or dangerous driving techniques. It can
help maintain vehicle control during
braking on slippery surfaces. Remem-
ber that stopping distances on slippery
surfaces will be longer than on normal
surfaces 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 respon-
sible for safety.
● Tire type and condition may also affect
braking effectiveness.
– When replacing tires, install the specified size of tires on all four
wheels.
BRAKE SYSTEM
5-32Starting and driving

– When installing a spare tire, makesure that it is the proper size and type
as specified on the Tire and Loading
Information label. Refer to “Tire and
Loading Information label” in the
“Technical and consumer informa-
tion” section of this manual.
– For additional information, refer to “Wheels and tires” in the “Mainte-
nance and do-it-yourself” section of
this manual.
The Anti-lock Braking System (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 slip-
pery surfaces.
Using the system
Depress the brake pedal and hold it down. De-
press the brake pedal with firm steady pressure,
but do not pump the brakes. The ABS will oper-
ate 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 ABS includes 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 malfunc-
tion, 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 vehicle
checked by a NISSAN dealer.
Normal operation
The ABS operates 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 ap-
plies and releases hydraulic pressure. This action
is similar to pumping the brakes very quickly. You
may feel a pulsation 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 operating properly.
However, the pulsation may indicate that road
conditions are hazardous and extra care is re-
quired while driving.
Starting and driving5-33

The system indicatorsAwill appear when the
vehicle moves closer to an object.
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 inserting it into the key
hole or use the remote keyless entry function on
the Intelligent Key.
ANTIFREEZE
In the winter when it is anticipated that the tem-
perature will drop below 32°F (0°C) , check the
antifreeze to assure proper winter protection. For
additional information, refer to “Engine cooling
system” in the “Maintenance and do-it-yourself”
section of this manual.
BATTERY
If the battery is not fully charged during extremely
cold weather conditions, the battery fluid may
freeze and damage the battery. To maintain maxi-
mum efficiency, the battery should be checked
regularly. For additional information, refer to “Bat-
tery” in the “Maintenance and do-it-yourself” sec-
tion of this manual.
DRAINING OF COOLANT WATER
If the vehicle is to be left outside without anti-
freeze, drain the cooling system, including the
engine block. Refill before operating the vehicle.
For additional information, refer to “Changing
engine coolant” in the “Maintenance and do-it-
yourself” section of this manual.
TIRE EQUIPMENT
1. SUMMER tires have a tread designed to
provide superior performance on dry pave-
ment. However, the performance of these
tires will be substantially reduced in snowy
and icy conditions. If you operate your ve-
hicle on snowy or icy roads, NISSAN recom-
mends the use of MUD & SNOW or ALL
SEASON TIRES on all four wheels. Please
consult a NISSAN dealer for the tire type,
size, speed rating and availability informa-
tion.
2. For additional traction on icy roads, studded 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.
LSD2137
COLD WEATHER DRIVING
Starting and driving5-39

Tire and loading information label
1Seating capacity: The maximum num-
ber of occupants that can be seated
in the vehicle.
2Tire size – refer to “Tire labeling” in
this section.
3Cold tire pressure: Inflate the tires to
this pressure when the tires are cold.
Tires are considered COLD after the
vehicle has been parked for 3 or more
hours, or driven less than 1 mile
(1.6 km) at moderate speeds. The
recommended cold tire inflation is set
by the manufacturer to provide the
best balance of tire wear, vehicle
handling, driveability, tire noise, etc.,
up to the vehicle’s GVWR.
4Original tire size: The size of the tires
originally installed on the vehicle at
the factory.
5Spare tire size.
6Vehicle load limit: refer to “Vehicle
loading information” in the “Technical
and consumer information” section.
LDI2083
8-38Maintenance and do-it-yourself