spark plugs replace INFINITI QX 2011 Owners Manual

8 Maintenance and do-it-yourself
Maintenance requirement.......................... 8-2
Scheduled maintenance ........................ 8-2
General maintenance ........................... 8-2
Where to go for service ......................... 8-2
General maintenance .............................. 8-2
Explanation of maintenance items ............... 8-2
Maintenance precautions .......................... 8-5
Engine compartment check locations ................ 8-6
Vk56vd engine model ........................... 8-6
Engine cooling system ............................. 8-7
Checking engine coolant level ................... 8-8
Changing engine coolant ........................ 8-8
Engine oil ........................................ 8-9
Checking engine oil level ....................... 8-9
Changing engine oil and filter ................... 8-9
Automatic transmission fluid .......................8-11
Power steering fluid .............................. 8-12
Brake fluid ...................................... 8-12
Brake fluid ................................... 8-13
Window washer fluid ............................. 8-14
Battery .......................................... 8-15
Jump starting ................................. 8-16
Variable voltage control system ...................8-16
Drive belts ....................................... 8-17Spark plugs
..................................... 8-17
Replacing spark plugs ......................... 8-18
Air cleaner ....................................... 8-18
Windshield wiper blades .......................... 8-19
Cleaning ...................................... 8-19
Replacing ..................................... 8-19
Rear window wiper blades ........................8-20
Brakes .......................................... 8-20
Self-adjusting brakes .......................... 8-20
Brake pad wear warning ....................... 8-20
Brake booster ................................. 8-21
Fuses ........................................... 8-21
Engine compartment ........................... 8-22
Passenger compartment ....................... 8-23
Intelligent Key battery replacement ................8-24
Lights ........................................... 8-26
Headlights .................................... 8-27
Exterior

and interior lights ..................... 8-27
Wheels and tires ................................. 8-29
Tire pressure .................................. 8-29
Tire labeling .................................. 8-33
Types of tires ................................. 8-35
Tire chains ................................... 8-35
Changing wheels and tires..................... 8-36

1. Power steering fluid pump
2. Water pump
3. Alternator
4. Crankshaft pulley
5. Air conditioner compressor
WARNING
Be sure the ignition switch is in the OFF or LOCK
position before servicing drive belts. The en-
gine could rotate unexpectedly.
1. Visually inspect each belt for signs ofunusual wear, cuts, fraying or looseness.
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 con- dition 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.
SDI2533
DRIVE BELTS SPARK PLUGS
Maintenance and do-it-yourself8-17

REPLACING SPARK PLUGS
If replacement is required, see an INFINITI re-
tailer 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 maintenance schedule in
“INFINITI Service and Maintenance Guide”, but
do not reuse them by cleaning or regapping.
Always replace spark plugs with recommended
or equivalent ones.To remove the filter, release the lock pins
1
and pull the unit upward2.
The filter element should not be cleaned and
reused. Replace it according to the mainte-
nance intervals. See “INFINITI Service and Main-
tenance Guide” for maintenance intervals.
When replacing the filter, wipe the inside of the
air cleaner housing and the cover with a damp
cloth.
WARNING
● Operating the engine with the air cleaner
removed can cause you or others to be
burned. The air cleaner not only cleans the
air, it stops flame if the engine backfires. If it
isn’t there, and the engine backfires, you
could be burned. Do not drive with the air
cleaner removed, and be careful when work-
ing on the engine with the air cleaner
removed.
● Never pour fuel into the throttle body or at-
tempt to start the engine with the air cleaner
removed. Doing so could result in serious
injury.
SDI2020SDI2515
AIR CLEANER
8-18Maintenance and do-it-yourself

Seat belt warning light and chime....2-16
Seat belts .................. 1-18
Seat belts with pretensioners .......1-62
Small children ................ 1-29
Three-point type ............... 1-22
Seat(s) Climate controlled seats ..........2-46
Driver-side memory ............3-30
Heated seats ................ 2-44
Seats .....................1-2
Security system, Vehicle security system . . 2-29
Security system (INFINITI Vehicle Immobilizer
System), Engine start .............. 2-31
Selector lever, Shift lock release .......5-18
Servicing climate control ...........4-40
SETTING button ................. 4-11
Shift lock release Transmission ................ 5-18
Shifting, Automatic transmission .......5-15
SNOW mode ................... 5-93
Snow mode switch ............... 2-49
Spare tire ................. 8-38, 9-9
Spark plugs ................... 8-17
Speedometer ...................2-6
Starting Before starting the engine .........5-13
Jump starting ................ 6-11
Precautions when starting and driving . . 5-2
Push starting ................ 6-13
Starting the engine ............. 5-13
STATUS button ..................4-7
Status light, Front passenger air bag .....1-57
Steering Heated steering wheel ...........2-43
Power steering fluid ............8-12
Power steering system ...........5-94Steering lock release malfunction
indicator
................... 2-23
Steering-wheel-mounted controls for
audio ..................... 4-81
Tilt/telescopic steering ..........3-26
Storage ..................... 2-54
Sun visors .................... 3-26
Sunglasses
holder............... 2-56
Supplemental air bag warning labels .....1-63
Supplemental air bag warning light . . 1-63, 2-16
Supplemental restraint system ........1-50
Precautions on supplemental restraint
system .................... 1-50
Switch Autolight switch .............. 2-37
Fog light switch ............... 2-42
Hazard warning flasher switch ......2-43
Headlight aiming control .........2-39
Headlight switch .............. 2-37
Ignition switch ................ 5-15
Intelligent Brake Assist (IBA) OFF
switch .................... 2-50
Power door lock switch ...........3-5
Snow mode switch ............. 2-49
Turn signal switch ............. 2-42
Vehicle dynamic control (VDC) off
switch .................... 2-51
T
2nd row seat .................. 2-55
3rd row seat .................. 2-56
Tachometer ....................2-7
Temperature gauge, Engine coolant
temperature gauge ................2-7 Theft (INFINITI Vehicle Immobilizer System),
Engine start
................... 2-31
Three-way catalyst ................5-2
Tilt/telescopic steering ............3-26
Tire Pressure, Low tire pressure warning
light ..................... 2-14
Tire replacement indicator . . . ......2-25
Tires Flat tire ....................6-2
Low tire pressure warning system .....5-3
Tire and Loading information label . 8-31, 9-11
Tire chains ................. 8-35
Tire dressing .................7-4
Tire pressure ................ 8-29
Tire pressure information (display) ....4-9
Tire pressure monitoring system
(TPMS) .................. 5-3, 6-2
Tire rotation ................. 8-36
Types of tires ................ 8-35
Uniform tire quality grading ........9-28
Wheel/tire

size ................9-9
Wheels and tires .............. 8-29
Top Tether strap child restraints ........1-34
Touch screen ...................4-4
Tow mode .................... 5-93
Tow mode switch ................ 2-49
Towing Flat towing ................. 9-28
Tow truck towing .............. 6-14
Towing a trailer ............... 9-17
Towing safety ................ 9-21
TPMS, Tire pressure monitoring system ....5-3
TPMS with Tire Inflation Indicator . . . . . 5-5
TPMS, Tire pressure warning system .....6-2
10-6