1998 INFINITI Q45 Service and Repair Manual

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Factory-Grade Data

1998 INFINITI Q45 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

  • T Sedan 4-Door
  • Base Sedan 4-Door

Engines covered

  • 4.1L 4130CC 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

1998 INFINITI Q45 Recalls & Complaints

NHTSA #02V17100024/06/2002Component: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

ON CERTAIN PASSENGER VEHICLES, ONE OF THE DIODES USED IN THE ALTERNATOR MAY HAVE BEEN DAMAGED WHEN BUILT. THIS CAN EVENTUALLY RESULT IN FAILURE OF THE DIODE AND AN ELECTRICAL SHORT WHICH COULD MELT T

Consequence

IF THE COMBUSTIBLE GAS EMITTED BY THE MELTING PLASTIC DOES NOT DISPERSE DUE TO AIR FLOW THROUGH THE

Remedy

DEALERS WILL REPLACE THE ALTERNATOR. OWNER NOTIFICATION BEGAN JULY 29, 2002. OWNERS WHO TAKE THEIR

NHTSA #99V12900020/05/1999Component: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

VEHICLE DESCRIPTION: PASSENGER VEHICLES. ONE OF THE DIODES USED IN THE ALTERNATOR MAY HAVE BEEN DAMAGED WHEN BUILT. THIS CAN EVENTUALLY RESULT IN FAILURE OF THE DIODE AND AN ELECTRICAL SHORT WHICH

Consequence

IF THE COMBUSTIBLE GAS EMITTED BY THE MELTING PLASTIC DOES NOT DISPERSE DUE TO AIR FLOW THROUGH THE

Remedy

DEALERS WILL REPLACE THE ALTERNATOR.

NHTSA #98V32500014/12/1998Component: POWER TRAIN:AUTOMATIC TRANSMISSION

VEHICLE DESRIPTION: PASSENGER VEHICLES. THE IGNITION KEY CAN BE REMOVED WHEN THE ENGINE IS TURNED OFF WITHOUT PLACING THE TRANSMISSION SHIFT LEVER IN THE "PARK" POSITION. THIS DOES NOT COMPLY WIT

Consequence

IF THIS OCCURRED AND THE DRIVER FAILED TO MOVE THE SHIFT LEVER TO 'PARK' OR ENGAGE THE PARKING BRAKE

Remedy

DEALERS WILL REPLACE THE SHIFT LOCK CONTROL UNIT.

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.

TSB #10190150

INFINITI; FRONT SONAR PARKING SENSOR SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

TSB #10192146

SERVICE INFORMATION This bulletin provides information to identify: - A leaking strut or a shock absorber that qualifies for replacement under warranty. - A strut or shock absorber that has slight oil seepage, a condition which is considere

TSB #10192191

As part of an enhanced emissions test for Inspection & Maintenance (I/M), some States may require the System Readiness Test (SRT) status be checked. - The SRT is used to indicate whether the engine control module (ECM) has completed self di

TSB #10192219

SERVICE INFORMATION - This bulletin is to assist you in responding to customer questions about brake operation, and provides diagnostic and repair information for each item listed, if any should occur. - Most brake issues fall into the foll

TSB #10192218

If YOU CONFIRM: A vehicle needs to have the brake rotors resurfaced (front or rear). ACTION: Use the ProCut PFM Series on-car brake lathe to perform brake rotor resurfacing and follow the tips listed in this bulletin. - The ProCut PFM Serie

Showing the 8 most recent of 69 technical service bulletins on file with NHTSA.

19990201Component: AIR BAGSCrash reported4 injured

NO DEPLOYMENT OF AIRBAG DURING COLLISION, FRONT OF VEHICLE WAS DAMAGED ENOUGH TO GIVE AIRBAG WARNING FOR DEPLOYMENT, HOWEVER THERE WERE MULTIPLE INJURIES. *YC

20050928Component: AIR BAGS:FRONTALCrash reported2 injured

WHILE DRIVING AT APPROXIMATELY 35 MPH THE OWNER HIT A VEHICLE ON THE FRONT RIGHT SIDE. UPON IMPACT, THE AIR BAGS FAILED TO DEPLOY. THE DRIVER AND PASSENGER SUSTAINED INJURIES, BUT DID NOT SEEK IMMED

20050211Component: AIR BAGS:FRONTALCrash reported1 injured

WHILE DRIVING AT 35 MPH THE VEHICLE COLLIDED INTO ANOTHER VEHICLE. THE DUAL AIRBAGS DID NOT DEPLOY. THE DRIVER SUSTAINED SPINAL INJURIES AND THE PASSENGER SUSTAINED CHEST AND BACK INJURIES. THE VEHICL

20030426Component: AIR BAGS:FRONTALCrash reported1 injured

FRONT SEAT PASSENGER - 5'9" SITTING ALL THE WAY BACK WITH SEAT BELT ON. LIFTED LEFT ARM UP JUST BEFORE FRONT END CRASH IMPACT AND SUFFERED A BAD FRACTURE REQUIRING SURGERY AND PIN PLACEMENT TO LEFT D

20020522Component: ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOODFire reported

THE CAR WAS PARKED AFTER DRIVING THE CAR FOR APPROX 1.5 MILES AND AFTER ABOUT 15 20 MINUTES RESTAUARANT ATTENDANT INQUIRED WHO OWNS THAT CAR? AND INFORMED THAT THERE IS SMOKE COMING OUT OF THE CAR.

Showing the 5 most serious of 16 complaints filed with NHTSA.

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