spark plugs INFINITI M 2012 Owners Manual

8 Maintenance and do-it-yourself
Maintenance requirement .................................... 8-2Scheduled maintenance .................................. 8-2
General maintenance....................................... 8-2
Where to go for service ................................... 8-2
General maintenance ........................................... 8-3 Explanation of maintenance items ................... 8-3
Maintenance precautions ..................................... 8-5
Engine compartment check locations ................... 8-7 VK56VD engine ............................................... 8-7
VQ37VHR engine ............................................. 8-9
Engine cooling system ....................................... 8-11 Checking engine coolant level ....................... 8-12
Changing engine coolant ............................... 8-12
Engine oil .......................................................... 8-13 Checking engine oil level............................... 8-13
Changing engine oil and filter ....................... 8-13
Automatic transmission fluid ............................. 8-16
Power steering fluid........................................... 8-16
Brake fluid......................................................... 8-17 Brake fluid .................................................... 8-17
Window washer fluid ......................................... 8-18
Battery .............................................................. 8-19 Jump starting ................................................ 8-20
Variable voltage control system ......................... 8-20 Drive belts ........................................................ 8-21
Spark plugs ...................................................... 8-21
Replacing spark plugs ................................. 8-22
Air cleaner ........................................................ 8-22
Windshield wiper blades ................................... 8-24 Cleaning ...................................................... 8-24
Replacing..................................................... 8-24
Brakes .............................................................. 8-25 Self-adjusting brakes ................................... 8-25
Brake pad wear warning .............................. 8-25
Fuses ................................................................ 8-26 Engine compartment .................................... 8-26
Passenger compartment............................... 8-28
Intelligent Key battery replacement ................... 8-29
Lights................................................................ 8-31 Headlights ................................................... 8-31
Exterior and interior lights ........................... 8-32
Wheels and tires ............................................... 8-34 Tire pressure ............................................... 8-34
Tire labeling ................................................ 8-38
Types of tires............................................... 8-40
Tire chains ................................................... 8-41
Changing wheels and tires........................... 8-41

SDI2545
VK56VD engine
SDI2119
VQ37VHR engine1. Power steering fluid pump
2. Alternator
3. Crankshaft pulley
4. Air conditioner compressor
5. Drive belt auto-tensioner
WARNING
Be sure the ignition switch is in the OFF or
LOCK position before servicing drive belts.
The engine could rotate unexpectedly.
1. Visually inspect each belt for signs of
unusual wear, cuts, fraying or loosen-
ess. If the belt is in poor condition or
loose, have it replaced or adjusted by
an INFINITI retailer.
2. Have the belts checked regularly for condition and tension in accordance
with the maintenance schedule in your
“INFINITI Service and Maintenance
Guide ”.
WARNING
Be sure the engine and the ignition switch
are off and that the parking brake is
engaged securely.
CAUTION
Be sure to use the correct socket to remove
the spark plugs. An incorrect socket can
damage the spark plugs.
Maintenance and do-it-yourself8-21
DRIVE BELTS SPARK PLUGS

8-22Maintenance and do-it-yourself
SDI2020
REPLACING SPARK PLUGS
If replacement is required, see an INFINITI
retailer for servicing.
Iridium-tipped spark plugs
It is not necessary to replace the iridium-
tipped spark plugs as frequently as the
conventional type spark plugs since they
will last much longer. Follow the main-
tenance schedule in“INFINITI Service and
Maintenance Guide ”, but do not reuse
them by cleaning or regapping. Always replace spark plugs with recom-
mended or equivalent ones.SDI2549
VK56VD engine
AIR CLEANER

10-6
Child restraints ............................................ 1-21
Cruise control .............................................. 5-45
Lane departure warning (LDW) system ......... 5-23
Maintenance .................................................. 8-5
Seat belt usage ........................................... 1-12
Supplemental restraint system ..................... 1-39
When starting and driving .............................. 5-3
Pre-crash seat belts with comfort function ........ 1-14
Predictive course line settings .......................... 4-32
Preview function ............................................... 5-94
Preview function (for Intelligent cruise
control system) ................................................. 5-69
Preview Function warning light.......................... 2-15
Push starting .................................................... 6-10
Push-button ignition switch ....................... 5-9, 5-10
R
Radio Car phone or CB radio ................................. 4-89
FM-AM-SAT radio with Compact Disc
(CD) player ................................................... 4-61
Rain-sensing auto wiper system ........................ 2-33
Rapid air pressure loss ....................................... 5-7
Readiness for inspection/maintenance (I/M) test
(US only) .......................................................... 9-22
Rear door lock Child safety rear door lock ............................. 3-6
Rear pocket ...................................................... 2-51
Rear sunshade .................................................. 2-57 Rear window and outside mirror
defroster switch ................................................ 2-34
Rearview monitor .............................................. 4-26
Recorders
Event data ................................................... 9-23
Registering your vehicle in another country ...... 9-11
Remote keyless entry system ............................ 3-14
Reporting safety defects ................................... 9-21
Rise-up and build-up ........................................ 5-99
Roadside assistance program ............................. 6-2
Rollover .............................................................. 5-6
Roof Moonroof ..................................................... 2-56
S
Safety
Child seat belts ........................................... 1-19
Reporting safety defects .............................. 9-21
Satellite radio operation ................................... 4-62
Seat adjustment Front power seat adjustment .......................... 1-3
Front seats..................................................... 1-3
Seat belt(s)
Child safety ................................................. 1-19
Infants ......................................................... 1-20
Injured persons ........................................... 1-14
Larger children ............................................. 1-20
Precautions on seat belt usage .................... 1-12
Pre-crash seat belts with comfort function ... 1-14
Pregnant women .......................................... 1-14
Seat belt cleaning .......................................... 7-6 Seat belt extenders ...................................... 1-18
Seat belt maintenance ................................. 1-18
Seat belt warning light and chime ............... 2-15
Seat belts .................................................... 1-12
Seat belts with pretensioners ...................... 1-51
Shoulder belt height adjustment .................. 1-18
Small children ............................................. 1-20
Three-point type .......................................... 1-15
Seat(s)
Climate controlled seats .............................. 2-43
Driver-side memory ...................................... 3-28
Heated seats ............................................... 2-41
Seats ............................................................. 1-2
Security system Vehicle security system ................................ 2-29
Security system (INFINITI Vehicle Immobilizer
System)
Engine start ................................................. 2-30
Selector lever
Shift lock release ......................................... 5-18
Servicing air conditioner (See automatic
climate control) ................................................. 4-33
Servicing climate control ................................... 4-47
SETTING button ................................................. 4-16
Shift lock release, Transmission ........................ 5-18
Shifting
Automatic transmission ............................... 5-14
Shoulder belt height adjustment ....................... 1-18
SNOW mode ..................................................... 5-20
Spare tire ........................................................... 9-9
Spark plugs ...................................................... 8-21