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Service bulletins for the 1998 Infiniti Q45

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

69 on file from NHTSA, as of 2026-10-19.

By type

By component

Bulletins, newest first
ITB-11-049-B2012-07-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. INFINITI: REPROGRAMMING ELECTRONIC CONTROL UNIT (ECU) ON ALL QUALIFYING VEHICLES. NO MODELS LISTED. MODEL YEARS 1998-2013. *PE
ITB-09-0622010-04-09. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. INFINITI: VENT CONTROL VALVE REPLACEMENT. NO APPLIED VEHICLES AFFECTED: ALL MODELS; NO MODEL YEARS LISTED. *PE
ITB-08-024A2010-03-03. Service bulletin. AIR BAGS. INFINITI: SRS PRECAUTIONS DURING SERVICE. INCLUDED IN THE RESTRAINTS SECTION OF THE ELECTRONIC SERVICE MANUAL (ESM) FOR EACH VEHICLE IS INFORMATION NECESSARY TO SERVICE THE SUPPLEMENTAL RESTRAINT SYSTEM (SRS) SAFELY. IMPROPER MAINTENANCE, INCLUDING INCORRECT REMOVAL AND INSTALLATION OF THE SRS, CAN LEAD TO A SERIOUS INJURY OR DEATH CAUSED BY UNINTENTIONAL ACTIVATION OF THE SRS. NO MODEL OR MODEL YEARS LISTED. *PE UPDATED 2/21/14. *PE
ITB-09-0502010-01-05. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. INFINITI: TIRE PRESSURE MONITORING SYSTEM (TPMS) WARNING LIGHT ON/BLINKING. NO MODELS OR MODEL YEARS LISTED. *PE UPDATED ON 08-11-2011. *KB
ITB-09-0202009-08-07. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. INFINITI: ELECTRONIC CONTROL UNIT DAMAGE CAN RESULT FROM IMPROPER BATTERY CONNECTION. THE BATTERY IS REQUIRED TO STAY CONNECTED WHEN THE ENGINE IS RUNNING. NO MODEL YEARS LISTED. *PE
ITB99048A2003-12-24. Service bulletin. EQUIPMENT. THE INFINITI INTEGRATED HOMELINK TRANSMITTER SYSTEM. VARIOUS MODELS INCLUDING 1996-2004 I30/I35; 2004 Q45; 2004 M45. *TT
ITB99016B2003-10-22. Service bulletin. SEAT BELTS:FRONT. FRONT SEAT BELT LATCH PLATE RETAINING BUTTON MISSING. VARIOUS MODELS INCLUDING THE 2004 G35. *TT
99046C2003-02-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE WILL NOT START. VEHICLE IMMOBIILIZER SYSTEM/NISSAN ANTI-THEFT SYSTM (IVIS/NATS). *TT
ITB99039B2002-07-11. Service bulletin. VEHICLE SPEED CONTROL. SUBJECT REGARDING REVISED THROTTLE POSITION SENSOR (TPS) ADJUSTMENT PROCEDURE. *TT
ITB99039B2002-06-20. Service bulletin. VEHICLE SPEED CONTROL. SUBJECT REGARDING REVISED THROTTLE POSITION SENSOR ADJUSTMENT PROCEDURE. *SLC
ITB010392001-10-26. Service bulletin. UNKNOWN OR OTHER. INFORMATION REGARDING ESSENTIAL TOOL: INNER TIE ROD WRENCHES. *YH
ITB99039A2001-04-12. Service bulletin. VEHICLE SPEED CONTROL. SUBJECT REGARDING INFINITI REVISED TPS (THROTTLE POSITION SENSOR) ADJUSTMENT PROCEDURE. *TT
ITB99046B2001-04-12. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE. A CONDITION MAY EXIST WHERE THE ENGINE WILL NOT START OR INTERMITTENT NO START CONDITION IS EXPERIENCED. THIS BULLETIN DESCRIBES AND INTRODUCES NEW FEATURES OF THE VEHICLE IMMOBILIZER SYSTEM / NISSAN ANTI-THEFT SYSTEM (IVIS / NATS). *TT
ITB00010B2001-02-02. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS. INFORMATION CONTAINING A BRAKE JUDDER REPAIR FLOW CHART. *TT
ITB98014B2001-02-02. Service bulletin. SEATS:FRONT ASSEMBLY:POWER ADJUST. A POWER SEAT THAT DOES NOT MOVE BACKWARD WHEN OPERATING THE SEAT SWITCH AND ALL OTHER POWER SEAT FUNCTIONS ARE PERFORMING CORRECTLY; A GRINDING OR GRATING NOISE HEARD WHEN OPERATING THE SEAT SWITCH FORWARD OR BACKWARD. *TT
ITB00010A2000-07-19. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP. SOME VEHICLES MAY EXHIBIT STEERING WHEEL VIBRATION OR BRAKE PEDAL PULSATION (JUDDER) WHEN BRAKING. *TT
ITB000102000-04-26. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP. SOME VEHICLES MAY EXHIBIT STEERING WHEEL VIBRATION OR BRAKE PEDAL PULSATION WHEN BRAKING. *TT
ITB99046A2000-04-26. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE. THIS BULLETIN DESCRIBES AND INTRODUCES NEW FEATURES OF THE INFINITI VEHICLE IMMOBILIZER SYSTEM / NISSAN ANTI-THEFT SYSTEM (IVS / NATS). *TT
ITB99050A2000-04-26. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. SOME CUSTOMER MAY INDICATE THAT A LIGHT TICKING HUMMING NOISE CAN BE HEARD COMING FROM THE BLOWER MOTOR OF AN VEHICLE WHEN THE MOTOR IS RUN AT LOW FAN SPEEDS (SPEED 1 OR 2). *TT
ITB000022000-04-26. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. SUBJECT REGARDING SUNROOF RAIL ASSEMBLY REPAIR. *TT
ITB990532000-04-26. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. SUBJECT REGARDING WINDSHIELD WASHER NOZZLE SPRAY PATTERN ADJUSTMENT FOR VEHICLES WITH VARIOUS VIN RANGES. *TT
ITB990502000-04-26. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. SOME VEHICLES MAY EXHIBIT A LIGHT TICKING OR HUMMING NOISE COMING FROM THE BLOWER MOTOR WHEN THE MOTOR IS RUNNING AT LOW FAN SPEEDS (SPEED 1 OR 2). *TT
ITB990482000-04-26. Service bulletin. EQUIPMENT:ELECTRICAL. THE INFINITI INTEGRATED HOMELINK TRANSMITTER SYSTEM. *TT
ITB990381999-11-10. Service bulletin. STRUCTURE:BODY. SUBJECT REGARDING A CENTER CONSOLE TOP LID THAT COMES LOOSE. *TT
ITB990461999-10-29. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE. ON VEHICLES EQUIPPED WITH THE IVIS/NATS, THE ENGINE WILL NOT START WITHOUT THE USE OF A REGISTERED IGNITION KEY. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.