2012 NISSAN ALTIMA COUPE key battery

8 Maintenance and do-it-yourself
Maintenance requirements..........................8-2
General maintenance ..............................8-2
Explanation of general maintenance items .........8-2
Maintenance precautions ...........................8-5
Engine compartment check locations ................8-6
Engine cooling system .............................8-8
Checking engine coolant level ...................8-9
Changing engine coolant ........................8-9
Engine oil ........................................ 8-10
Checking engine oil level .......................8-10
Changing engine oil ........................... 8-11
Changing engine oil filter .......................8-12
Continuously Variable Transmission (CVT) fluid
(if so equipped) .................................. 8-13
Power steering fluid ............................... 8-14
Brake and clutch (if so equipped) fluid ..............8-14
Brake fluid .................................... 8-15
Clutch fluid (if so equipped) ....................8-15
Windshield-washer fluid ........................... 8-15
Windshield-washer fluid reservoir ...............8-15
Battery .......................................... 8-16
Jump starting ................................. 8-17
Variable voltage control system .....................8-18Drive belt
........................................ 8-18
Spark plugs ...................................... 8-19
Replacing spark plugs ......................... 8-19
Air cleaner ....................................... 8-20
In-cabin microfilter ............................. 8-21
Windshield wiper blades .......................... 8-21
Cleaning ..................................... 8-21
Replacing .................................... 8-21
Brakes .......................................... 8-22
Self-adjusting brakes .......................... 8-22
Brake pad wear indicators ......................8-22
Fuses ........................................... 8-23
Engine compartment ........................... 8-24
Passenger compartment .......................8-25
Battery replacement .............................. 8-27
NISSAN
Intelligent Key™ ....................... 8-27
Lights ........................................... 8-28
Headlights .................................... 8-28
Front park/turn/sidemarker light .................8-29
Exterior and interior lights .......................8-30
Upper tether anchor/key cylinder covers ............8-36
Removing covers from rear parcel shelf ..........8-36
Installing covers to rear parcel shelf ..............8-37

When performing any inspection or maintenance
work on your vehicle, always take care to prevent
serious accidental injury to yourself or damage to
the vehicle. The following are general precau-
tions which should be closely observed.
WARNING
●Park the vehicle on a level surface, ap-
ply the parking brake securely and
block the wheels to prevent the vehicle
from moving. For manual transmission
models, move the shift selector to N
(Neutral) . For CVT models, move the
shift selector to P (Park) .
● Be sure the ignition switch is in the OFF
or LOCK position when performing 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 whenever
you work on your vehicle. ●
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 neces-
sary 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 by
a NISSAN dealer because 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. Al-
ways conform to local regulations for
disposal of vehicle fluid. ●
Never leave the engine or the CVT re-
lated component harness connector
disconnected while the ignition switch
is in the ON position.
● Never connect or disconnect the battery
or any transistorized component while
the ignition switch is in the ON position.
● Your vehicle is equipped with an auto-
matic engine cooling fan. It may come
on at any time without warning, even if
the ignition key 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.
This “Maintenance and do-it-yourself” section
gives instructions regarding only those items
which are relatively easy for an owner to perform.
A genuine NISSAN service manual is also avail-
able. See “Owner’s Manual/Service Manual or-
der information” in the “Technical and consumer
information” section of this manual.
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,
have it done by a NISSAN dealer.
MAINTENANCE PRECAUTIONS
Maintenance and do-it-yourself8-5

CAUTION
Be careful not to allow children to swallow
the battery or removed parts.
NISSAN INTELLIGENT KEY™
Replace the battery in the Intelligent Key as fol-
lows:1. Remove the mechanical key from the Intelli- gent Key.
2. Insert a small screwdriver
Ainto the slitB
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: CR2032 or equiva-
lent.
●Do not touch the internal circuit and elec-
tric 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 capacity.
● Make sure that the + side faces the bot-
tom of the case.
LDI2001
BATTERY REPLACEMENT
Maintenance and do-it-yourself8-27

Continuously Variable Transmission (CVT)
fluid......................8-13
Engine coolant .................8-8
Engine oil ...................8-10
Power steering fluid .............8-14
F.M.V.S.S. certification label ...........9-10
Foglightswitch .................2-34
Front air bag system
(See supplemental restraint system) ......1-49
Frontseats.....................1-2
Fuel Capacities and recommended
fuel/lubricants .................9-2
Fuel economy ................5-22
Fuel-filler door and cap ...........3-26
Fuel-filler door lock opener lever ......3-26
Fuel gauge ...................2-6
Fueloctanerating...............9-4
Fuel recommendation .............9-3
Loosefuelcapwarning........2-25,3-26
Fuses.......................8-23
Fusiblelinks ...................8-24
G
Garage door opener, HomeLink Universal
Transceiver....................2-51
Gascap .....................3-26
Gauge Engine coolant temperature gauge .....2-5
Fuel gauge ...................2-6
Odometer ...................2-4
Speedometer .................2-4
Tachometer ..................2-5
Trip odometer .................2-4 General maintenance
...............8-2
Glovebox.....................2-41
Gloveboxlock..................2-41
Groceryhooks..................2-42
H
Hands-free phone system,
Bluetooth ...............4- 100, 4-114
Hazard warning flasher switch .........2-34
Headlight and turn signal switch ........2-29
Headlight control switch ............2-30
Headlights ....................8-28
Heated seats ...................2-35
Heater Heater and air conditioner
controls................4-19,4-26
Heater operation ...........4-20,4-27
HomeLink Universal Transceiver ........2-51
Hood release ...................3-24
Horn .......................2-35
I
Ignition Switch Push-Button Ignition Switch .........5-7
Immobilizer system .........2-27,3-3,5-10
Important vehicle information label .......9-10
In-cabin microfilter ................8-21
Increasing fuel economy .............5-22
Indicator lights and audible reminders
(See warning/indicator lights and audible
reminders)....................2-10
Inside automatic anti-glare mirror ........3-31Inside mirror
...................3-30
Instrument brightness control ..........2-33
Instrument panel ...............0-8,2-2
Instrument panel dimmer switch ........2-33
Intelligent Key system Key operating range ..........3-8, 3-19
Key operation .................3-9
Mechanical

key ................3-3
Remote keyless entry operation . . .3-12, 3-19
Troubleshooting guide ........3-16, 3-23
Warning signals ............3-16,3-23
Interiorlight....................2-49
Interior trunk lid release .............3-25
iPod Player ............4-78,4-80,4-82
ISOFIX child restraints .............1-24
J
Jump starting ...................6-8
K
Keyfob battery replacement ...........8-27
Keyless entry With Intelligent Key system
(See Intelligent Key system) .....3-12,3-19
Keys, For Intelligent Key system .........3-2
L
Labels Air conditioner specification label .....9-12
C.M.V.S.S. certification label ........9-10
10-3