Problems owners report
Complaints filed with NHTSA about the 1998 Infiniti Q45, by the system named in each complaint. One complaint can name several.
- Air bags6
- Electrical system2
- Engine and engine cooling1
- Seat belts1
- Steering1
- Vehicle speed control1
- Suspension1
- Service brakes, hydraulic1
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 8 injuries and 0 deaths reported
Compared with other years
NHTSA ODI complaints by model year
New York safety inspections
At its first New York inspection the 1998 Infiniti Q45 failed the safety check 1.81% of the time — 5% more often than the average 1998 passenger car (1.71%). Median odometer at inspection: 116,419 miles.
NY DMV Vehicle Inspections (vezn-fmmk), initial inspections since Aug 2021 · how we count
Fuel consumption
Official Canadian test results for 1 variant: combined 13.2 L/100 km (about 18 mpg US), CO₂ 304 g/km.
| Variant | City | Highway | Combined |
|---|---|---|---|
| Q45 · Mid-size · Premium gasoline | 15.0 | 11.0 | 13.2 |
Litres per 100 km. Natural Resources Canada, Fuel consumption ratings (open.canada.ca) · Open Government Licence – Canada
Recalls in Canada
3 Transport Canada recalls for the 1998 Infiniti Q45.
| 2002117 24 Jun 2002 | Electrical On certain 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 electri… |
| 1999030 2 Mar 1999 | Powertrain Duplicate recall, see original 1998174. Certain vehicles do not comply with the requirements of CMVSS 114 - Locking System. There is the possibility that the … |
| 1998174 4 Sept 1998 | Other THE SHIFT LOCK CONTROL UNIT MAY NOT SEND A LOCK SIGNAL TO THE KEY INTERLOCK MECHANISM SOLENOID. THIS WOULD MAKE IT POSSIBLE TO REMOVE THE IGNITION KEY AFTER TU… |
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada
Recalls
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 THE PLASTIC HOUSING.
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 COULD MELT THE PLASTIC HOUSING.
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 WITH THE REQUIREMENTS OF FMVSS NO. 102, "TRANSMISSION SHIFT LEVER SEQUENCE, STARTER INTERLOCK, AND TRANSMISSION BRAKING EFFECT."
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What Infiniti told its dealers about the 1998 Infiniti Q45: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 632221 | SUBJECT REGARDING REVISED THROTTLE POSITION SENSOR (TPS) ADJUSTMENT PROCEDURE. *TT |
| 631768 | SUBJECT REGARDING REVISED THROTTLE POSITION SENSOR ADJUSTMENT PROCEDURE. *SLC |
| 623102 | INFORMATION REGARDING ESSENTIAL TOOL: INNER TIE ROD WRENCHES. *YH |
| 618438 | SUBJECT REGARDING INFINITI REVISED TPS (THROTTLE POSITION SENSOR) ADJUSTMENT PROCEDURE. *TT |
| 618437 | 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 |
| 615943 | INFORMATION CONTAINING A BRAKE JUDDER REPAIR FLOW CHART. *TT |
| 615940 | 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 |
| 613449 | SOME VEHICLES MAY EXHIBIT STEERING WHEEL VIBRATION OR BRAKE PEDAL PULSATION (JUDDER) WHEN BRAKING. *TT |
| 610386 | SOME VEHICLES MAY EXHIBIT STEERING WHEEL VIBRATION OR BRAKE PEDAL PULSATION WHEN BRAKING. *TT |
| 610385 | THIS BULLETIN DESCRIBES AND INTRODUCES NEW FEATURES OF THE INFINITI VEHICLE IMMOBILIZER SYSTEM / NISSAN ANTI-THEFT SYSTEM (IVS / NATS). *TT |
| 610384 | 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 |
| 610380 | SUBJECT REGARDING SUNROOF RAIL ASSEMBLY REPAIR. *TT |
| 610376 | SUBJECT REGARDING WINDSHIELD WASHER NOZZLE SPRAY PATTERN ADJUSTMENT FOR VEHICLES WITH VARIOUS VIN RANGES. *TT |
| 610367 | 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 |
| 610366 | THE INFINITI INTEGRATED HOMELINK TRANSMITTER SYSTEM. *TT |
| 608226 | SUBJECT REGARDING A CENTER CONSOLE TOP LID THAT COMES LOOSE. *TT |
| 608058 | ON VEHICLES EQUIPPED WITH THE IVIS/NATS, THE ENGINE WILL NOT START WITHOUT THE USE OF A REGISTERED IGNITION KEY. *TT |
| 607982 | THIS BULLETIN PROVIDES DETAILS FOR THE NUMBER ASSIGNMENT MODULE (NAM) PARAMETER AND HANDSET FUNCTIONS (FCN-1) SETTINGS. *TT |
| 607946 | SOME VEHICLES WITH AUTOMATIC TRANSMISSIONS MAY EXPERIENCE A DOUBLE THUMP WHEN STOPPING. *TT |
| 607945 | SERVICE INFORMATION REGARDING WATER / CONDENSATION APPEARING IN THE HEADLAMP ASSEMBLY. *TT |
| 606742 | INFORMATION REGARDING FRONT BRAKE JUDDER. *TT |
| 606250 | INFORMATION ON ACTIVATING AND DIAGNOSING THE INFINITI COMMUNICATOR IN VEHICLE COMMUNICATION SYSTEM (IVAC). *TT |
| 606249 | INFORMATION ON KEYLESS REMOTE ENTRY PROGRAMMING. *TT |
| 606245 | INFORMATION ON THE POWER SEAT CABLE FOR VEHICLES BUILT BEFORE JNKCA21A3XT750254. *TT |
| 606179 | INFORMATION ON SERVICING INOPERATIVE FRONT SEAT LUMBAR SUPPORT MECHANISM. *TT |
NHTSA manufacturer communications (public domain)