2003 INFINITI M45 Service and Repair Manual

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Factory-Grade Data

2003 INFINITI M45 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • Base Sedan 4-Door

Engines covered

  • 4.5L 4500CC V8 GAS DOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2003 INFINITI M45 Recalls & Complaints

NHTSA #03V45500017/11/2003Component: ENGINE AND ENGINE COOLING

ON CERTAIN PASSENGER VEHICLES, THE CIRCUIT BOARD FOR THE CRANK POSITION SENSOR OR CAM POSITION SENSOR MAY HAVE AN IMPROPER SOLDER JOINT DUE TO SOLDER DEFORMATION CAUSED BY HEAT STRESS ACCELERATED BY T

Consequence

THIS COULD CAUSE THE "SERVICE ENGINE SOON" WARNING LIGHT TO COME ON, CREATE A NO START CONDITION, CA

Remedy

DEALERS WILL REPLACE THE CRANK POSITION SENSORS. CAMSHAFT POSITION SENSOR(S), AND IN SOME CASES, THE

NHTSA #12V08800006/03/2012Component: FUEL SYSTEM, GASOLINE

NISSAN IS RECALLING CERTAIN MODEL YEAR 2003-2004 INFINITI M45 VEHICLES MANUFACTURED FROM MARCH 7, 2002, THROUGH JUNE 3, 2004. DUE TO A CIRCUIT BOARD FAILURE, THE FUEL GAUGE MAY READ A FUEL LEVEL HIGH

Consequence

THE VEHICLE MAY STALL WITHOUT WARNING, INCREASING THE RISK OF A CRASH.

Remedy

NISSAN WILL NOTIFY OWNERS, AND DEALERS WILL MODIFY THE CIRCUIT BOARD FREE OF CHARGE. THE SAFETY RECA

TSB #11031720

CERTIFICATION LABEL AND VIN PLATE REPLACEMENT SERVICE INFORMATION Because of collision damage or other vehicle repair, a replacement Certification Label or VIN Plate/Label may be needed. HINT: Certification Label = FMVSS (Federal Motor Vehi

TSB #11002539

INTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

TSB #11001182

WINDOW GLASS WARRANTY INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

TSB #11001179

REMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

TSB #11001177

WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

TSB #10232646

REMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

TSB #10232645

WHEEL BEARING COLLISION DAMAGE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

TSB #10232644

WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

Showing the 8 most recent of 67 technical service bulletins on file with NHTSA.

20240430Component: FUEL SYSTEM, GASOLINE

The contact owns a 2003 Infiniti M45. The contact stated that on several occasions while driving at various speeds, the fuel gauge failed to read the fuel level correctly and the vehicle stalled. The

20230125Component: AIR BAGS

The contact owns a 2003 Infiniti M45. The contact stated that the air bag warning light was illuminated. The vehicle was taken to the dealer for a diagnostic test. The contact stated that the driverâ€

20201102Component: POWER TRAIN

TRAVELING AT ABOUT 60 MPH ON A STATE ROUTE, THE CAR SHUT DOWN. NO POWER, NO DASH LIGHTS, INABILITY TO USE TURN SIGNALS TO INDICATE THE INTENTION OF CHANGING LANES TO THE RIGHT AND ONTO THE SIDE OF TH

20200224Component: FUEL/PROPULSION SYSTEM

TL* THE CONTACT OWNS A 2003 INFINITI M45. THE CONTACT STATED THAT WHILE OPERATING THE VEHICLE THE FUEL GAUGE INDICATED THE FUEL TANK WAS FULL AT ALL TIMES. THE VEHICLE RAN OUT OF FUEL DUE TO THE FAILU

20200102Component: STRUCTURE:BODY

I AM THE OWNER OF A WHITE 2003 INFINITI M45. A FEW YEARS AGO, I NOTICED A SMALL CHIP RIGHT ABOVE HE WINDSHIELD ON THE ROOF OF THE CAR. I CONTACTED INFINITI BACK THEN TO SEE IF THERE WERE ANY RECALLS

Showing the 5 most serious of 178 complaints filed with NHTSA.

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