ECU NISSAN ALTIMA 2023 Workshop Manual

Always refer to the illustration for the cor-
rect placement and jack-up points for your
specific vehicle model and jack type.
Carefully read the caution label attached
to the jack body and the following
instructions.
If a flat tire occurs on the front axle of AWD
vehicle, the spare tire must be applied to
the rear axle of the vehicle.
1. Loosen each wheel nut one or two turnsby turning counterclockwise with the
wheel nut wrench. Do not remove the
wheel nuts until the tire is off the
ground. 2. Place the jack directly under the jack-up
point as illustrated so the top of the jack
contacts the vehicle at the jack-up point.
Align the jack head between the two
notches in the front or the rear as
shown. Also fit the groove of the jack
head between the notches as shown.
NOTE:Do not place jack on the notches be-
tween the front most and rear most
jacking points.
The jack should be used on firm and
level ground. 3. Jack up the rear axle of the vehicle. To lif t
the vehicle, securely hold the jack lever
and rod with both hands. Carefully raise
the vehicle until the tire clears the
ground. Remove the wheel nuts, and
then remove the tire and set aside.
4. Apply the spare tire to the rear axle of the vehicle, replace the wheel nuts and
tighten.
5. Lower the jack and further tighten the wheel nuts to the recommended
torque, see “Installing the spare tire”
(P. 6-10).
6. Jack up the front axle of the vehicle and remove the damaged wheel.
7. Apply the wheel that was removed from the rear axle to the front axle of the ve-
hicle, replace the wheel nuts and tighten.
8. Lower the jack and further tighten the wheel nuts to the recommended
torque, see “Installing the spare tire”
(P. 6-10).
LCE0020
In case of emergency6-9

Installing the spare tire
WARNING
For AWD vehicles - the TEMPORARY USE
ONLY spare tire must be installed to the
rear wheels only. If a front tire is punc-
tured, install the original rear tire onto
the front wheel, then install the TEMPO-
RARY USE ONLY spare tire on the rear.
Failure to do so could cause overheat-
ing to the AWD system
The spare tire is designed for emergency
use. For additional information, see
“Wheels and tires” (P. 8-29). 1. Clean any mud or dirt from the surface
between the wheel and hub.
2. Carefully put the spare tire on and tighten the wheel nuts finger tight.
3. With the wheel nut wrench, tighten wheel nuts alternately and evenly in the
sequence illustrated (
OA,OB,OC,OD,OE)
until they are tight.
4. Lower the vehicle slowly until the tire touches the ground. Then, with the
wheel nut wrench, tighten the wheel
nuts securely in the sequence illustrated
(
OA,OB,OC,OD,OE). Lower the vehicle
completely.
WARNING
• Incorrect wheel nuts or improperly
tightened wheel nuts can cause the
wheel to become loose or come off.
This could cause an accident.
• Do not use oil or grease on the wheel
studs or nuts. This could cause the
nuts to become loose.
• Retighten the wheel nuts when the
vehicle has been driven for 600 miles
(1,000 km) (also in cases of a flat tire,
etc.). As soon as possible, tighten the wheel
nuts to the specified torque with a
torque wrench.
Wheel nut tightening torque:
83 f t-lb (113 N·m)
The wheel nuts must be kept tightened
to specification at all times. It is recom-
mended that wheel nuts be tightened to
specifications at each lubrication
interval.
Adjust tire pressure to the COLD
pressure.
COLD pressure: Af ter vehicle has been
parked for 3 hours or more or driven less
than 1 mile (1.6 km).
COLD tire pressures are shown on the
Tire Load and Information label affixed
to the driver side center pillar.
Af ter adjusting tire pressure to the COLD
tire pressure, the display (if so equipped)
of the tire pressure information may
show higher pressure than the COLD tire
pressure af ter the vehicle has been
driven more than 1 mile (1.6 km). This is
because the tire pressure increases as
the tire temperature rises. This does not
indicate a system malfunction.
WCE0056
6-10In case of emergency

5. Securely store the flat tire in the tire welland jacking equipment in the vehicle.
NOTE:Remove the center wheel cap before
storing the flat tire.
6. Place the spare tire cover and the trunk floor carpeting over the damaged tire.
7. Close the trunk.
WARNING
• Always make sure that the spare tire
and jacking equipment are properly
secured af ter use. Such items can be-
come dangerous projectiles in an ac-
cident or sudden stop.
• The spare tire is designed for emer-
gency use. For additional informa-
tion, see “Wheels and tires” (P. 8-29).
REPAIRING FLAT TIRE (for models
with emergency tire puncture
repair kit)
WARNING
• Af ter using Genuine NISSAN Emer-
gency Tire Sealant to repair a minor
tire puncture, do not drive the vehicle
at speeds faster than 50 mph (80
km/h).
• Immediately af ter using the Genuine
NISSAN Emergency Tire Sealant to
repair a minor tire puncture, it is rec-
ommended that you visit a NISSAN
dealer. The Genuine NISSAN Emer-
gency Tire Sealant cannot perma-
nently seal a punctured tire. Continu-
ing operation of the vehicle without a
permanent tire repair can lead to a
crash.
• If you used the Genuine NISSAN
Emergency Tire Sealant to repair a
minor tire puncture, it is recom-
mended that you visit a NISSAN
dealer to replace the TPMS sensor in
addition to repairing or replacing the
tire. •
NISSAN recommends using only
Genuine NISSAN Emergency Tire
Sealant provided with your vehicle.
Other tire sealants may damage the
valve stem seal which can cause the
tire to lose air pressure.
This vehicle does not have a spare tire. The
emergency tire puncture repair kit
(Genuine NISSAN Emergency Tire Sealant)
is supplied with the vehicle instead of a
spare tire. It can be used to temporarily
repair minor tire punctures.
If possible, have the vehicle towed to a fa-
cility that can repair or replace the flat tire.
Using the emergency tire puncture repair
kit may cause a malfunction of the tire
pressure sensor and cause the low tire
pressure warning light to illuminate.
CAUTION
• To avoid the emergency tire puncture
kit being damaged during storage or
use:
– Only use the emergency tire punc-
ture repair kit on your vehicle. Do
not use it on other vehicles.
In case of emergency6-11

5. Remove the protective capOAof the
hose and screw the hose securely onto
the tire valve. Make sure that the pres-
sure release valve
OBis securely tight-
ened. Make sure that the air compressor
switch is in the OFF (O) position, and
then insert the power plug into the
power outlet in the vehicle. 6. Push the power switch to the ACC posi-
tion. Then turn the compressor switch
to the ON (−) position and inflate the tire
up to the pressure that is specified on
the Tire and Loading Information label
affixed to the driver’s side center pillar if
possible, or to the minimum of 26 psi
(180 kPa). Turn the air compressor off
briefly in order to check the tire pressure
with the pressure gauge.
If the tire is inflated to higher than the
specified pressure, lower the tire pres-
sure by releasing air with the pressure
release valve.
NOTE:
The compressor tire pressure gauge
may show a pressure reading of 87 psi
(600 kPa) for about 30 seconds while in-
flating the tire. The pressure gauge is in-
dicating the pressure inside the sealant
can. When the sealant has been injected
into the tire the pressure gauge will drop
and indicate actual tire pressure.
WARNING
To avoid serious personal injury while
using the emergency tire puncture re-
pair kit:
• Securely tighten the compressor
hose to the tire valve. Failure to do so
can cause the sealant to spray into
the air and get into your eyes or on
the skin.
• Do not stand directly beside the
damaged tire while it is being in-
flated because of the risk of the rup-
ture. If there are any cracks or bumps,
turn the compressor off
immediately.
SCE0870SCE0871
In case of emergency6-15

If the tire pressure does not increase to26
psi (180 kPa) within 10 minutes, the tire
may be seriously damaged and the tire
cannot be repaired with this tire repair
kit. It is recommended that you visit a
NISSAN dealer.
7. When the tire pressure is at the specified amount, turn the air compressor off. If
the tire cannot be inflated to the speci-
fied amount, the air compressor can be
turned off at the minimum of 26 psi (180
kPa). Remove the power plug from the
power outlet and quickly remove the
hose from the tire valve. Attach the pro-
tective cap and valve cap. Properly stow
the emergency tire puncture repair kit in
the cargo area.
CAUTION
To avoid serious personal injury when
stowing the emergency tire puncture
repair kit:
• Keep the sealant bottle screwed into
the compressor. Failure to do so can
cause the sealant to spray into the air
and get into your eyes or on the skin. 8. Immediately drive the vehicle for 10 min-
utes or 2 miles (3 km) at a speed below
50 mph (80 km/h).
9. Af ter driving, make sure that the air compressor switch is in the OFF posi-
tion, then screw the hose securely onto
the tire valve. Check the tire pressure
with the pressure gauge. Temporary re-
pair is completed if the tire pressure
does not drop.
Make sure the pressure is adjusted to
the pressure that is specified on the Tire
and Loading Information label before
driving.
10. If the tire pressure drops, repeat the steps from 5 to 9. If the pressure drops
again or under 19 psi (130 kPa), the tire
cannot be repaired with this tire re-
pair kit. If the tire cannot be repaired,
the driver should not drive on it any
further. The car should be towed to the
nearest dealership.
The sealant bottle and hose cannot be
reused to repair another punctured tire.
It is recommended that you visit a
NISSAN dealer to purchase
replacements. Af ter repairing tire
It is recommended that you visit a NISSAN
dealer for tire repair/replacement as soon
as possible.
WARNING
• Af ter using Genuine NISSAN Emer-
gency Tire Sealant to repair a minor
tire puncture, do not drive the vehicle
at speeds faster than 50 mph (80
km/h).
• Immediately af ter using Genuine
NISSAN Emergency Tire Sealant to
repair a minor tire puncture, it is rec-
ommended that you visit a NISSAN
dealer. The Genuine NISSAN Emer-
gency Tire Sealant cannot perma-
nently seal a punctured tire. Continu-
ing operation of the vehicle without a
permanent tire repair can lead to a
crash.
• Do not inject any tire liquid or aerosol
tire sealant into the tires, as this may
cause a malfunction of the tire pres-
sure sensors.
6-16In case of emergency

Two-Wheel Drive models with
Continuously Variable
Transmission (CVT)
NISSAN recommends that your vehicle be
towed with the driving (front) wheels off the
ground or place the vehicle on a flatbed
truck as illustrated.
CAUTION
• Never tow Continuously Variable
Transmission (CVT) models with the
front wheels on the ground or four
wheels on the ground (forward or
backward), as this may cause serious
and expensive damage to the trans-
mission. If it is necessary to tow the
vehicle with the rear wheels raised
always use towing dollies under the
front wheels. •
When towing Continuously Variable
Transmission (CVT) models with the
rear wheels on the ground or on tow-
ing dollies:
– Place the ignition switch in the
OFF position, and secure the
steering wheel in a straight-ahead
position with a rope or similar de-
vice. Never secure the steering
wheel by placing the ignition
switch in the LOCK position. This
may damage the steering lock
mechanism (for models with a
steering lock mechanism).VEHICLE RECOVERY (freeing a
stuck vehicle)
WARNING
To avoid vehicle damage, serious per-
sonal injury or death when recovering a
stuck vehicle:
• Contact a professional towing ser-
vice to recover the vehicle if you have
any questions regarding the recov-
ery procedure.
• Tow chains or cables must be at-
tached only to main structural mem-
bers of the vehicle.
LCE2369
6-22In case of emergency

When installing Genuine NISSAN floor mats,
follow the installation instructions provided
with the mat and the following:
1. With the ignition in the OFF position, theshif t lever in P (Park) position and with
the parking brake fully applied, position
the floor mat in the floorwell so that the
floor mat grommet holes are aligned
with the positioning aids.
2. Secure the grommet holes into the po- sitioning aids and ensure that the floor
mat is properly positioned.
3. Make sure the floor mat does not inter- fere with pedal operation. With the igni-
tion still in the OFF position, the shif t le-
ver in the P (Park) position and with the
parking brake applied, fully apply and re-
lease all pedals. The floor mat must not
interfere with pedal operation or prevent
the pedal from returning to its normal
position.
It is recommended that you visit a NISSAN
dealer for details about installing the floor
mats in your vehicle. The illustration shows the location of the
floor mat positioning aids.
SEAT BELTS
The seat belts can be cleaned by wiping
them with a sponge dampened in a mild
soap solution. Allow the belts to dry com-
pletely in the shade before using them. For
additional information, see “Seat belt main-
tenance” (P. 1-20).
WARNING
Do not allow wet seat belts to roll up in
the retractor. NEVER use bleach, dye or
chemical solvents to clean the seat
belts, since these materials may se-
verely weaken the seat belt webbing.
LAI2046
Positioning aids
Appearance and care7-7

When performing any inspection or main-
tenance work on your vehicle, always take
care to prevent serious accidental injury to
yourself or damage to the vehicle. The fol-
lowing are general precautions which
should be closely observed.
WARNING
• Park the vehicle on a level surface,
apply the parking brake securely and
block the wheels to prevent the ve-
hicle from moving. Move the shif t le-
ver to P (Park).
• Be sure the ignition switch is in the
OFF or LOCK position when perform-
ing any parts replacement or repairs.
• If you must work with the engine run-
ning, keep your hands, clothing, hair
and tools away from moving fans,
belts and any other moving parts.
• 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. •
Your vehicle is equipped with an au-
tomatic engine cooling fan. It may
come on at any time without
warning, even if the ignition switch is
in the OFF position and the engine is
not running. To avoid injury, always
disconnect the negative battery
cable before working near the fan.
• If you must run the engine in an en-
closed space such as a garage, be
sure there is proper ventilation for
exhaust gases to escape.
• Never get under the vehicle while it is
supported only by a jack. If it is nec-
essary to work under the vehicle,
support it with safety stands.
• Keep smoking materials, flame and
sparks away from the fuel tank and
battery.
• On gasoline engine models, the fuel
filter or fuel lines should be serviced.
It is recommended that you visit a
NISSAN dealer for this service be-
cause the fuel lines are under high
pressure even when the engine is off.
CAUTION
• Do not work under the hood while
the engine is hot. Turn the engine off
and wait until it cools down. •
Avoid contact with used engine oil
and coolant. Improperly disposed
engine oil, engine coolant and/or
other vehicle fluids can damage the
environment. Always conform to lo-
cal regulations for disposal of vehicle
fluid.
• Never leave the engine or the trans-
mission related component harness
connector disconnected while the ig-
nition switch is in the ON position.
• Never connect or disconnect the bat-
tery or any transistorized compo-
nent while the ignition switch is in
the ON position.
This “Do-it-yourself ” section gives instruc-
tions regarding only those items which are
relatively easy for an owner to perform.
A Genuine NISSAN service manual is also
available. For additional information, see
“Owner's Manual/Service Manual order in-
formation” (P. 10-26).
You should be aware that incomplete or
improper servicing may result in operating
difficulties or excessive emissions, and
could affect warranty coverage. If in doubt
about any servicing, it is recommended
that you have it done by a NISSAN dealer.
MAINTENANCE PRECAUTIONS
8-2Do-it-yourself

CAUTION
Be careful not to burn yourself, as the
engine oil is hot.
WARNING
• Prolonged and repeated contact
with used engine oil may cause skin
cancer.
• Try to avoid direct skin contact with
used oil. If skin contact is made, wash
thoroughly with soap or hand
cleaner as soon as possible.
• Keep used engine oil out of reach of
children.
4. Loosen the oil filter with an oil filter wrench by turning it counterclockwise.
Remove the oil filter by turning it by
hand.
5. Wipe the engine oil filter mounting sur- face with a clean rag.
CAUTION
Be sure to remove any old gasket ma-
terial remaining on the sealing surface
of the engine. Failure to do so could
lead to an oil leak and engine damage. •
The dipstick must be inserted in
place to prevent oil spillage from the
dipstick hole when filling the engine
with oil.
6. Coat the gasket on the new filter with clean engine oil.
7. Screw in the oil filter clockwise until a slight resistance is felt, then tighten addi-
tionally more than 2/3 turn.
Oil filter tightening torque: 11 to 15 f t-lb (14.7 to 20.6 N·m)
8. Clean and re-install the drain plug with a new washer. Securely tighten the drain
plug with a wrench. Do not use exces-
sive force.
Drain plug tightening torque: 22 to 29 f t-lb (29.4 to 39.2 N·m)
9. Refill the engine with the recommended oil through the oil filler opening, and in-
stall the oil filler cap securely.
For additional information about drain and
refill capacity, see “Recommended fluids/
lubricants and capacities” (P. 10-2). The
drain and refill capacity depends on the oil
temperature and drain time. Use these
specifications for reference only. Always use the dipstick to determine the proper
amount of oil in the engine.
10. Start the engine and check for leakage
around the drain plug and the oil filter.
Correct as required. Turn the engine off
and wait more than 15 minutes. Check
the oil level with the dipstick. Add en-
gine oil if necessary.
Af ter the operation
1. Reinstall undercover in reverse order ofremoval.
2. Lower the vehicle carefully to the ground.
3. Reset the oil control system (if so equipped) and oil and filter maintenance
reminder. For additional information,
see “Vehicle information display – 5 inch
(13 cm) Type A” (P. 2-18) or “Vehicle infor-
mation display – 7 inch (18 cm) Type B”
(P. 2-34)
• Dispose of waste oil and filter properly.
• Check your local regulations.
Do-it-yourself8-11

• If the battery is labeled “do not open” it ismaintenance free and battery fluid
should not be checked. It is recom-
mended that you visit a NISSAN dealer or
a qualified specialist workshop to con-
firm the battery’s performance.
• Keep the battery surface clean and dry. Clean the battery with a solution of bak-
ing soda and water.
• Make certain the terminal connections are clean and securely tightened.
• If the vehicle is not to be used for 30 days or longer, disconnect the negative (-) bat-
tery terminal cable to prevent discharge.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery dis-
charge and potential no-start conditions
such as:
1. Installation or extended use of elec- tronic accessories that consume bat-
tery power when the engine is not
running (Phone chargers, GPS, DVD
players, etc.)
2. Vehicle is not driven regularly and/or only driven short distances.
In these cases, the battery may need to
be charged to maintain battery health.
WARNING
• Do not expose the battery to flames,
an electrical spark or a cigarette. Hy-
drogen gas generated by the battery
is explosive. Explosive gases can
cause blindness or injury. Do not al-
low battery fluid to contact your skin,
eyes, fabrics or painted surfaces. Sul-
furic acid can cause blindness or in-
jury. Af ter touching a battery or bat-
tery cap, do not touch or rub your
eyes. Thoroughly wash your hands. If
the acid contacts your eyes, skin or
clothing, immediately flush with wa-
ter for at least 15 minutes and seek
medical attention.
• When working on or near a battery,
always wear suitable eye protection
and remove all jewelry.
• Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands af ter
handling.
• Keep battery out of the reach of
children.
• Do not tip the battery.
NOTE:
Do not try to open the top of the battery.
This battery is not equipped with remov-
able vent caps.
JUMP STARTING
If jump starting is necessary, see “Jump
starting” (P. 6-17). If the engine does not
start by jump starting, the battery may
have to be replaced. It is recommended
that you visit a NISSAN dealer for this
service.
LDI3302
Do-it-yourself8-15