2009 INFINITI QX56 fuel

LAN-46
< FUNCTION DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
NOTE:
CAN data of the air bag diagnosis sensor unit is not us
ed by usual service work, thus it is omitted.
Tire pressure data signal R T
Tire pressure signal R TR
Turn indicator signal TR
Buzzer output signal TR
Door lock/unlock request signal RT
Hazard request signal RT
Hazard warning lamp request signal RT
Ignition knob switch signal RT
KEY warning signal TR
LOCK warning signal TR
Panic alarm request signal RT
Power window open request signal RT
1st position switch signal R T
4th position switch signal R T
Distance to empty signal RT
Fuel level low warning signal RT
Fuel level sensor signal R T
Parking brake switch signal RT
Seat belt buckle switch signal RT
Stop lamp switch signal R T
Tow mode switch signal R T
Vehicle speed signal RRR RRR R T
RRRT
Steering angle sensor signal TR
ABS malfunction signal RT
ABS warning lamp signal RT
Brake pressure sensor signal RT
Brake warning lamp signal RT
SLIP indicator lamp signal RT
TCS malfunction signal RT
VDC malfunction signal RT
VDC OFF indicator lamp signal RRT
VDC operation signal RT
Front wiper stop position signal RT
High beam status signal R T
Hood switch signal RT
Low beam status signal R T
Rear window defogger control signal R RT
Signal name/Connecting unit
ECM
TCM
LASER ICC
ADP
AV
BCM
HVAC I-KEY M&A
STRG 4WDABS
IPDM-E
Revision: December 20092009 QX56

MA-1
MAINTENANCE
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SECTION MA
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CONTENTS
MAINTENANCE
PRECAUTION .......
........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tool ........................................... ......4
Commercial Service Tool ..........................................4
ON-VEHICLE MAINTENANCE .....................6
GENERAL MAINTE NANCE ........................... .....6
General Maintenance .......................................... ......6
PERIODIC MAINTENANCE ................................8
Introduction of Periodic Maintenance .................. ......8
Maintenance for Off-road Driving (4WD only) ...........8
Schedule 1 ................................................................8
Schedule 2 ..............................................................10
RECOMMENDED FLUIDS AND LUBRI-
CANTS ................................................................
12
Fluids and Lubricants .......................................... ....12
Engine Oil Recommendation ..................................13
ENGINE MAINTENANCE ...................................14
Checking Drive Belts ........................................... ....14
Changing Engine Coolant .......................................14
Checking Fuel Line .............................................. ....17
Changing Fuel Filter ................................................17
Changing Engine Air Cleaner Filter .........................17
Changing Engine Oil ................................................18
Changing Oil Filter ...................................................18
Changing Spark Plugs .............................................19
Checking EVAP Vapor Line .....................................20
CHASSIS AND BODY MAINTENANCE ...........22
Changing In-cabin Microfilter ............................... ....22
Checking Exhaust System .......................................22
Checking the A/T Fluid (ATF) ..................................23
Changing the A/T Fluid (ATF) ..................................24
Checking Transfer Fluid ..........................................25
Changing Transfer Fluid ..........................................26
Checking Propeller Shaft .........................................26
Checking Front Final Drive Oil .................................26
Changing Front Final Drive Oil ................................27
Checking Rear Final Drive Oil .................................27
Changing Rear Final Drive Oil .................................27
Balancing Wheels ....................................................28
Rotation ...................................................................29
Checking Brake Fluid Level and Leaks ...................30
Checking Brake Line and Cables ............................30
Checking Disc Brake ...............................................30
Checking Steering Gear and Linkage ......................31
Checking Power Steering Fluid and Line ................31
Checking Axle and Suspension Parts .....................32
Lubricating Locks, Hinges and Hood Latches .........33
Checking Seat Belts, Buckles, Retractors, An-
chors and Adjusters ............................................. ....
33
Revision: December 20092009 QX56

GENERAL MAINTENANCEMA-7
< ON-VEHICLE MAINTENANCE >
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UNDER THE HOOD AND VEHICLE
The maintenance items listed here should be checked periodically (e.g. each time you check the engine oil or refuel).
Seat beltsCheck that all parts of the seat belt system (e.g. buckles, anchors, adjusters and
retractors) operate properly and smoothly and are installed securely. Check the
belt webbing for cuts, fraying, wear or damage. SB-11, "Seat Belt Inspec-
tion", MA-33, "Checking
Seat Belts, Buckles, Re-
tractors, Anchors and
Adjusters"
Accelerator pedal
Check the pedal for smooth operation. Keep the floor mats away from the pedal. —
Brakes Check that the brake does not pull the vehicle to one side when applied. —
Brake pedal and
booster Check the pedal for smooth operation and make sure it has the proper distance
under it when depressed fully. Check the brake booster function. Keep the floor
mats away from the pedal. BR-15, "
Inspection and
Adjustment", BR-10, "In-
spection"
Parking brake
Check that the parking brake control has the proper travel and make sure that
the vehicle is held securely on a fairly steep hill when only the parking brake is
applied. PB-5, "On-Vehicle Ser-
vice"
Automatic transmis-
sion “Park” mecha-
nismOn a fairly steep hill check that the vehicle is held securely with the selector lever
in the P position without applying the brakes.
—
Item
Reference page
Item Reference page
Windshield washer
fluid Check that there is adequate fluid in the tank.
—
Engine coolant level Check the coolant level when the engine is cold. —
Radiator and hoses Check the front of the radiator and clean off any dirt, insects, leaves, etc., that
may have accumulated. Make sure the hoses have no cracks, deformation, de-
terioration or loose connections. —
Brake fluid level Make sure that the brake fluid level is between the “MAX” and “MIN” lines on the
reservoir. MA-30
Battery
Check the fluid level in each cell. It should be between the “MAX” and “MIN” lines.
Vehicles operated in high temperatures or under severe conditions require fre-
quent checks of the battery fluid level. —
Engine drive belt Make sure that no belt is frayed, worn, cracked or oily. MA-14
Engine oil levelCheck the level on the dipstick after parking the vehicle on a level spot and turn-
ing off the engine. —
Power steering fluid
level and lines Check the level on the reservoir with the engine off. Check the lines for improper
attachment, leaks, cracks, etc.
MA-31
Automatic transmis-
sion fluid levelCheck the level on the dipstick after putting the selector lever in “P” with the en-
gine idling.
MA-23
Exhaust system
Make sure there are no loose supports, cracks or holes. If the sound of the ex-
haust seems unusual or there is a smell of exhaust fumes, immediately locate
the trouble and correct it. MA-22
Underbody
The underbody is frequently exposed to corrosive substances such as those
used on icy roads or to control dust. It is very important to remove these sub-
stances, otherwise rust will form on the floor pan, frame, fuel lines and around the
exhaust system. At the end of winter, the underbody should be thoroughly
flushed with plain water, being careful to clean those areas where mud and dirt
can easily accumulate. —
Fluid leaks Check under the vehicle for fuel, oil, water or other fluid leaks after the vehicle
has been parked for a while. Water dripping from the air conditioner after use is
normal. If you should notice any leaks or gasoline fumes are evident, check for
the cause and correct it immediately. —
Revision: December 20092009 QX56

MA-8
< ON-VEHICLE MAINTENANCE >
PERIODIC MAINTENANCE
PERIODIC MAINTENANCE
Introduction of Periodic MaintenanceINFOID:0000000003776980
Two different maintenance schedules are provided, and should be used, depending upon the conditions in
which the vehicle is mainly operated. After 60,000 miles (96,000 km) or 48 months, continue the periodic
maintenance at the same mileage or ti me intervals, whichever comes first.
Maintenance for Off-road Driving (4WD only)INFOID:0000000003776981
After driving the vehicle off-road through sand, mud, or water; more frequent maintenance may be required for
the following items:
Brake pads and rotors
Brake lines and hoses
Rear final drive oil, transmission fluid, and transfer fluid
Steering linkage
Drive shafts
Engine air cleaner filter
In-cabin microfilters
Schedule 1INFOID:0000000003776982
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or r eplace if necessary. [ ]: At the mileage intervals only
Schedule 1Follow Periodic Maintenance Schedule 1 if your driving habits frequently includes
one or more of the following driving conditions:
• Repeated short trips of less than 5 miles (8 km).
• Repeated short trips of less than 10 miles (16 km) with outside temperatures re-
maining below freezing.
• Operating in hot weather in stop-and-go “rush hour” traffic.
• Extensive idling and/or low speed driving for long distances, such as police, taxi
or door-to-door delivery use.
• Driving in dusty conditions.
• Driving on rough, muddy, or salt spread roads.
• Towing a trailer or using a car-top carrier. Emission Control Sys-
tem Maintenance
MA-8
Chassis and Body
Maintenance
MA-8
Schedule 2Follow Periodic Maintenance Schedule 2 if none of the driving conditions shown
in Schedule 1 apply to the driving habits.
Emission Control Sys-
tem MaintenanceMA-10Chassis and Body
Maintenance
MA-10
MAINTENANCE OPERATION
MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles, kilo-
meters or months, whichever
comes first. Miles x 1,000
(km x 1,000) Months 3.75
(6)3 7.50
(12) 6 11 . 2 5
(18) 9 15
(24) 12 18.75
(30)15 22.5
(36) 18 26.25
(42)21 30
(48) 24
Drive belts NOTE (1) MA-14
Air cleaner filterNOTE (2) [R]MA-17
EVAP vapor lines I*MA-20
Fuel lines I*MA-17
Fuel filter NOTE (3) —
Engine coolant NOTE (4) MA-14
Engine oilR R R R R R R R MA-18
Engine oil filterR R R R R R R R MA-18
Spark plugs (Iridium-tipped type)Replace every 105,000 miles (169,000 km).MA-19
Intake and exhaust valve clear-
ance*NOTE (5)
EM-18
Revision: December 20092009 QX56

PERIODIC MAINTENANCEMA-9
< ON-VEHICLE MAINTENANCE >
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(1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace the drive belts i
f found
damaged or if the auto belt tensioner reading reaches the maximum limit.
(2) If operating mainly in dusty conditions, more frequent maintenance may be required.
(3) Maintenance-free item. For service procedures, go to the FL section.
(4) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(5) Periodic maintenance is not required. However, if valve noise increases, inspect valve clearance.
* Maintenance items and inte rvals with “*” are recommended by NISSAN for reliable vehicle operation. The owner need not perform
such maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and inter vals are
required.
CHASSIS AND BODY MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary.
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles, kilo-
meters or months, whichever
comes first. Miles x 1,000
(km x 1,000) Months 33.75
(54)27 37.5
(60) 30 41.25
(66)33 45
(72) 36 48.75
(78)39 52.5
(84) 42 56.25
(90)45 60
(96) 48
Drive belts NOTE (1) I*MA-14
Air cleaner filter NOTE (2) [R]MA-17
EVAP vapor lines I*MA-20
Fuel lines I*MA-17
Fuel filter NOTE (3) —
Engine coolant NOTE (4) R*MA-14
Engine oil R R R R R R R R MA-18
Engine oil filterR R R R R R R R MA-18
Spark plugs (Iridium-tipped type)Replace every 105,000 miles (169,000 km).MA-19
Intake and exhaust valve clear-
ance*NOTE (5)
EM-18
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
Section
- Page or
- Content
Title
Perform at number of miles, kilometers or
months, whichever comes first. Miles x
1,000(km x
1,000)
Months 3.75
(6)
3 7.5
(12)
6 11 . 2 5
(18)
9 15
(24)
12 18.75
(30)
15 22.5
(36)
18 26.25
(42)
21 30
(48)
24
Brake lines and cables IIMA-30
Brake pads and rotors II I IMA-30
Automatic transmission fluid, transfer fluid and
differential gear oil NOTE (1)
IIMA-23
,
MA-25
,
MA-27
,
MA-26
Steering gear and linkage, axle and suspension
parts II I I
MA-31,
MA-32
Tire Rotation NOTE (2) MA-29
Drive shaft boots and propeller shaft (4WD)II I IMA-26
Exhaust system II I IMA-22
In-cabin microfilter RRMA-22
Revision: December 20092009 QX56

MA-10
< ON-VEHICLE MAINTENANCE >
PERIODIC MAINTENANCE
(1) If towing a trailer, or using a car-top carrier, or driving on rough or muddy roads, change (not just inspect) oil at every 30,000 miles
(48,000 km) or 24 months. Using automatic transmission fluid other than Genui ne NISSAN Matic S ATF or Matic J ATF will cause
deterioration in driveability and automatic transmission durability, and may damage the automatic transmission, which is not
covered by the INFINITI new vehicle limited warranty.
(2) Refer to “Tire rotation” unde r the “General maintenance” heading earlier in this section.
Schedule 2INFOID:0000000003776983
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or r eplace if necessary. [ ]: At the mileage intervals only
(1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace the drive belts if found
damaged or if the auto belt tensioner reading reaches the maximum limit.
(2) Maintenance-free item. For service procedures, go to FL section.
(3) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(4) Periodic maintenance is not required. However, if valve noise increases, inspect valve clearance.
* Maintenance items and intervals with “*” are recommended by NISSAN for reliable vehicle operation. The owner need not perform
such maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and inter vals are
required.
CHASSIS AND BODY MAINTENANCE
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section
- Page or
- Content
Title
Perform at number of miles, kilometers or
months, whichever comes first. Miles x
1,000(km x
1,000)
Months 33.75
(54)
27 37.5
(60)
30 41.25
(66)
33 45
(72)
36 48.75
(78)
39 52.5
(84)
42 56.25
(90)
45 60
(96)
48
Brake lines and cables IIMA-30
Brake pads and rotors IIIIMA-30
Automatic transmission fluid, transfer fluid and
differential gear oil NOTE (1)
IIMA-23
,
MA-25
,
MA-27
,
MA-26
Steering gear and linkage, axle and suspen-
sion parts IIIIMA-31,
MA-32
Tire Rotation NOTE (2) MA-29
Drive shaft boots and propeller shaft (4WD)IIIIMA-26
Exhaust system IIIIMA-22
In-cabin microfilter RRMA-22
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference
Section - Page
or - Content Ti- tle
Perform at number of miles, kilometers
or months, whichever comes first. Miles x 1,000
(km x 1,000)
Months 7.5
(12)
6 15
(24)
12 22.5
(36)
18 30
(48)
24 37.5
(60)
30 45
(72)
36 52.5
(84)
42 60
(96)
48
Drive belts NOTE (1) I*MA-14
Air cleaner filter [R][R]MA-17
EVAP vapor lines I*I*MA-20
Fuel lines I*I*MA-17
Fuel filter NOTE (2) —
Engine coolant NOTE (3) R*MA-14
Engine oil R R R R R R R R MA-18
Engine oil filterR R R R R R R R MA-18
Spark plug (Iridium - tipped type) Replace every 105,000 miles (169,000 km).MA-19
Intake and exhaust valve clearance* NOTE (4) EM-18
Revision: December 20092009 QX56

MA-12
< ON-VEHICLE MAINTENANCE >
RECOMMENDED FLUIDS AND LUBRICANTS
RECOMMENDED FLUIDS AND LUBRICANTS
Fluids and LubricantsINFOID:0000000003776984
*1: For further details, refer to MA-13, "Engine Oil Recommendation".
*2: If Genuine NISSAN Matic S ATF is not available, Genuine Matic J ATF may also be used. Using automatic transmission fluid
other than Genuine NISSAN Matic S ATF or Matic J ATF will cause deterioration in drivability and automatic transmission dura-
bility, and may damage the automatic transmission, which is not covered by the INFINITI new vehicle limited warranty.
*3: DEXRON
TM VI type ATF may also be used.
*4: Available in mainland U.S.A. through an INFINITI dealer.
*5: For further details, see “Air conditioner specification label”.
*6: For hot climates, viscosity SAE 90 is suitable for ambient te mperatures above 0° C (32 ° F).
*7: For improved vehicle performance, INFINITI recommends the use of unleaded premium gasoline with an octane rating of at leas t 91
AKI (RON 96). For further details, refer to GI-27, "
Precaution for Fuel (Unleaded Premium Gasoline Recommended)",
*8: See an INFINITI dealer for service for synthetic oil.
*9: Using fluid other than Genuine Nissan Matic D ATF may cause deterioration in drivability and transfer durability, and may d amage the
transfer, which is not covered by the (INFINITI new vehicle limited) warranty. Description
Capacity (Approximate)
Recommended Fluids/Lubricants
Metric US measure Imp measure
Fuel 105.8 28 gal 23 1/4 gal Unleaded gasoline with octane rating of
at least 87 AKI (RON 91) *7
Engine oil
Drain and refill With oil filter
change
6.5
6 7/8 qt 5 3/4 qt
• Engine oil with API Certification Mark*1
• Viscosity SAE 5W-30
Without oil filter
change
6.2
6 1/2 qt 5 1/2 qt
Dry engine (engine overhaul) 7.6 8 qt
6 3/4 qt
Cooling system With reservoir
at MAX level
14.4
15 1/4 qt 12 5/8 qt Genuine NISSAN Long Life Anti-freeze
coolant or equivalent
Automatic transmission fluid (ATF) 10.6 11 1/4 qt 9 3/8 qt Genuine NISSAN Matic S ATF *2
Rear differential gear oil 1.75 3 3/4 pt 3 1/8 pt API GL-5 Synthetic 75W-90 Gear Oil
(Part No. 999MP-DF200P) or equivalent
*8
Transfer fluid 3.0 3 1/8 qt 2 5/8 qt Genuine NISSAN Matic D ATF recom-
mended *9
Front differential gear oil 1.6 3 3/8 pt 2 7/8 pt Genuine NISSAN Differential Oil Hypoid
Super GL-5 80W-90 or API GL-5 Viscosi-
ty SAE 80W-90*6
Power steering fluid (PSF) 1.0 1 1/8 qt 7/8 qt Genuine NISSAN PSF or equivalent *3
Brake fluid —— —Genuine NISSAN Super Heavy Duty
Brake Fluid or equivalent,
DOT 3 (US FMVSS No. 116) *4
Brake grease —— —PBC (poly butyl cuprysil) grease or equiv-
alent
Multi-purpose grease —— — NLGI No. 2 (lithium soap base)
Windshield washer fluid 4.5 4 3/4 qt
4 qtGenuine NISSAN Windshield Washer
Concentrate Cleaner & Anti-freeze or
equivalent
Air conditioning system refrigerant 1.08 ± 0.05 kg 2.38 ± 0.11 lb 2.38 ± 0.11 lb HFC-134a (R-134a) *5
Air conditioning system oil 290 m9.8 fl oz 10.2 fl oz NISSAN A/C System Oil Type S or equiv-
alent *5
Revision: December 20092009 QX56

RECOMMENDED FLUIDS AND LUBRICANTSMA-13
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Engine Oil RecommendationINFOID:0000000003776985
NISSAN recommends the use of an energy conserving oil in order to
improve fuel economy. Select only
engine oils that meet the Ameri-
can Petroleum Institute (API) cert ification and International Lubricant
Standardization and Approval Committee (ILSAC) certification and
SAE viscosity standard (2). These oils have the API certification
mark (1) on the front of the container. Oils which do not have the
specified quality label should not be used as they could cause
engine damage.
ANTI-FREEZE COOLANT MIXTURE RATIO
The engine cooling system is filled at the factory wit h a high-quality, long life, year-round, anti-freeze coolant
solution. The anti-freeze solution contains rust and corrosion inhibitors. Therefore, additional cooling system
additives are not necessary.
CAUTION:
• When adding or replacing coolant, be sure to use only Genuine NISSAN Long Life Anti-freeze cool-
ant or equivalent with the proper mixture ratio of 50% anti-freeze and 50% demineralized water or
distilled water.
• Other types of coolant solutions may damage your cooling system.
ALPIA0001ZZ
For outside temperatures down to: Anti-freeze coolant mixture ratio
° C ° F Genuine NISSAN Long Life
Antifreeze coolant Demineralized water or distilled
water
– 35° – 30° 50 % 50 %
Revision: December 20092009 QX56