InfinitiQ452005Overview/infiniti/q45/2005/base/

2005 Infiniti Q45

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2005 Q45.

Body PASSENGER CARTransmission Automatic (S5)

The 2005 Infiniti Q45 is a passenger car equipped with a five-speed automatic transmission and an engine requiring 5.9 quarts of 5W-30 API SL oil, returning an EPA-estimated 16 city and 22 highway mpg. When positioned within the model's 1990–2006 reliability timeline, this model year sits near the bottom of the complaint spectrum with just four total owner issues, standing just above the historical low of two complaints in 1993 and far below the peak of 47 in 1991. Ultimately, while the 2005 Q45 represents a generally stable chapter in the model's history, its three recalls and top complaint category of Vehicle Speed Control indicate that specific speed management anomalies remain the primary reliability focus for researchers.

Model year200620052004200320022001199919981997

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity5.9 qtOEM · verified
Engine oil type5W-30 API SLOEM · verified
Lug nut torque72-87 ft-lbsOEM · verified
EPA fuel economy16/22/18 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 24F · 585 CCA battery, OE oil filter 152089E01A. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 24F · 585 CCAOEM · verified
Tail / brake / turnLAMPOEM · verified
Tire sizeP225-55VR17OEM · verified
Wheel / rim7.5-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter152089E01A
Engine air filter16546AR000
Fuel filter1640041B1A
Spark plug224015M016 alt 224015M014
Front wiper blades28890JM00A alt 28890AR205
Serpentine belt11950AR00A alt 11720AR010
Thermostat212306N20A alt 212001LA1A
Cabin air filter27277VX00A

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S5)

Dimensions & weight NHTSA vPIC

Overall length201.6 in
Overall width72.4 in
Overall height58.7 in
Wheelbase113 in
Curb weight3845 lb
Track (front / rear)61.8 / 61.4 in
Weight distribution (front / rear)53/47

Ratings & economy EPA / vPIC

EPA city / highway / combined16 / 22 / 18 mpg
DrivetrainRear-Wheel Drive
Passenger volume102 cu ft
Cargo volume14 cu ft
Recommended fuelPremium Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the Q45 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

6.0–6.6 sec0–60 mph (tested)quickest 6.00 sec — 2002 Sedan
YearTrim / engine0–60¼ mileHPDrivetrain
2002Sedan 4.5L V86.00 sec14.50 sec340 hpRWD
2002Sedan 4.5L V86.60 sec15.80 sec340 hpRWD

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 5.9 qt of 5W-30 API SL engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 72-87 ft-lbs, the oil drain plug to 28.0 ft-lbs. The firing order is 1-8-7-3-6-5-4-2. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity10.9
Brake FluidDOT 3
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity3 Pints
Engine Oil5W-30 · API
Engine Oil Capacity5.9 qt
Power Steering FluidATF

Engine torques

Engine Flywheel Bolts62-68 ft-lbs
Intake Manifold to Engine Bolts18-23 ft-lbs
Exhaust Manifold to Cylinder Head Bolts19-22 ft-lbs
Engine Oil Pan Drain Plug28.0 ft-lbs

Chassis torques

Lug Nuts72-87 ft-lbs
Front Wheel Hub152-210 ft-lbs
Rear Wheel Hub152-203 ft-lbs

Ignition

Cylinder Firing Order1-8-7-3-6-5-4-2
Spark Plug Gap0.043 in
Spark Plug Torque18.0 ft-lbs
Ignition Timing12, Not adjustable degrees
Ignition Timing Acceptable Variance5 degrees
Ignition Timing Reference RPMIdle rpm

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.32 lbs
Oil GroupPAG
Oil Type46
Oil Capacity6.00 oz
Standard BCI Group Number24F
Standard BCI Cranking Performance585 cca

Service checks

Regulated Fuel System Pressure (Without Vacuum)51.0 psi
Injector Primary Resistance1-15 @ 77 degreesF ohms
Engine Compression164-191 PSI. 14 maximum variation PSI.
Engine Oil Pressure14
Intake Valve LashHydraulic in
Exhaust Valve LashHydraulic in

Brakes

Torque Caliper to Bracket25-36 ft-lbs / 16-23 ft-lbs
Torque to Knuckle29-37 ft-lbs / 102-122 ft-lbs
Minimum Pad ThicknessFront: 0.079; Rear: 0.079 in
Rotor Max Parallel Variation0.0006 in
Rotor Runout Limit0.0028 in
Rotor Nominal Thickness From1.1 in / 0.63 in
Rotor Nominal Thickness To1.1 in / 0.63 in
Rotor Minimum Machining1.024 in / 0.55 in

Multi-step torque procedures OEM · verified

Camshaft Bearing/Carrier Cap Bolts or Studs — tightening sequence 1 stages
1Bolts 9-101.4 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
111 ft. lbs., Step 2: 6011 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
165-72 ft. lbs., step 2: 90-9665–72 ft. lbs
Cylinder Head — tightening sequence 4 stages
172.0 ft. lbs.72 ft. lbs
2Loosen all bolts completely in order.
333.0 ft. lbs.33 ft. lbs
460 degrees60 degrees
Main Bearings — tightening sequence 1 stages
1Bolts 1-1029 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 3,750 mi; spark plugs at 105,000 mi; coolant every 3,750 mi. The big-interval services (every 3,750 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 3,750 miAccessory Drive Belt (inspect) · Brake Hydraulic Booster (inspect fluid level) · Differential (inspect fluid level) · Engine Coolant System (inspect fluid level) · Engine Coolant System Hoses (inspect) · Engine Oil (drain & refill)
Every 7,500 miBattery (inspect electrolyte level) · Brake System (inspect) · CV Joint Boot (inspect) · Drive Axle Assembly (inspect) · Driveshaft (inspect) · Exhaust System (Complete) (inspect)
Every 15,000 miAir Conditioning System (inspect) · Body Latches, Locks & Hinges (lubricate) · Brake Line (inspect) · Brake Pedal Assembly (inspect) · Cabin Air Filter (replace) · Engine Air Filter Element (replace)
Every 30,000 miDrive Belt (replace) · Engine Coolant System (drain, flush & refill) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect) · Fuel Tank (inspect) · Headlamp (inspect alignment)
At 60,000 miEngine Coolant System (drain, flush & refill)
At 105,000 miSpark Plugs (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Federal data places 2005 near the end of the model run, with owner complaints continuing a sharp decline from the 2002 peak of 22 down to just 4 in 2005 and 0 in 2006. While investigations held steady at 2, matching 2003 and 2004, recalls spiked to 3 in 2005, exceeding the 2 in 2004 and 1 in 2006 and representing the highest recall count in the entire year-by-year record provided. Those four complaints were evenly split among vehicle speed control, air bags/seats, tires, and the electrical system, with one crash-related complaint and no fire complaints, though the data does not specify underlying causes. Given that complaint volume is minimal but recall activity is at its apex, 2005 is a cautiously viable choice provided all three recalls have been addressed, though the cleaner federal profile of 2006 makes it the stronger candidate if available.

3
Open recalls
NHTSA campaigns
64
Service bulletins
Manufacturer communications
2
ODI investigations
Office of Defects Investigation
4
Owner complaints
1 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 4 complaints on record, top 4 components.

Vehicle Speed Control1
Air Bags,Seats1
Tires1
Electrical System1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 3 campaigns on record for this vehicle.

12V079000Air Bags:Side/WindowReported 28/02/2012

NISSAN IS RECALLING CERTAIN MODEL YEAR 2003-2005 INFINITI Q45 VEHICLES. A WIRING CONNECTOR FOR THE SEAT MOUNTED AIRBAG MAY EXPERIENCE INCREASED ELECTRICAL RESISTANCE, RESULTING IN THE NON-DEPLOYMENT OF THE SIDE AIR BAGS. Remedy: NISSAN WILL NOTIFY OWNERS, AND DEALERS WILL MODIFY THE WIRING CONNECTOR, FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 19, 2012. OWNERS MAY CONTACT NISSAN CUSTOMER SERVICE AT…

06V395000Exterior Lighting:Brake LightsReported 13/10/2006

CERTAIN VEHICLES FAIL TO COMPLY WITH THE STOP LAMP AND REFLEX REFLECTOR REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, 'LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." Remedy: DEALERS WILL REPLACE THE REAR COMBINATION LAMP ASSEMBLIES FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN ON OR ABOUT APRIL 16, 2007. OWNERS MAY CONTACT INFINITI AT 1-800-662-6200.

Technical service bulletins NHTSA · verified

Showing 5 of 64 bulletins on record with NHTSA.

BulletinDateComponentSummary
ITB09-063C2026-04-13StructureCERTIFICATION LABEL AND VIN PLATE REPLACEMENT SERVICE INFORMATION Because of collision…
ITB10-029C2024-05-20Electrical SystemCAN COMMUNICATION CODES – DIAGNOSTIC TIPS AND GUIDELINES This bulletin has been amended…
ITB13-052E2024-05-20Electrical SystemINTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended. See…
ITB13-006D2024-05-20Electrical SystemCAN COMMUNICATION – NETWORK DIAGNOSTIC FLOW CHART This bulletin has been amended. See…
ITB17-009H2024-04-29Visibility/WiperWINDOW GLASS WARRANTY INFORMATION This bulletin has been amended. See AMENDMENT HISTORY…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Q45. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2005 Q45 take?

5.9 qt of 5W-30 API SL, per the factory manual.

Does the 2005 Q45 have open recalls?

NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Q45 get?

EPA figures are 16 city / 22 highway / 18 combined mpg.