1990 Infiniti Q45 problems & reliability
28 owner complaints filed with NHTSA for the 1990 Infiniti Q45. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Power Train → | 14 | 50% |
| Engine and Engine Cooling | 3 | 11% |
| Visibility | 3 | 11% |
| Electrical System | 2 | 7% |
| Service Brakes, Hydraulic | 2 | 7% |
| Steering | 2 | 7% |
| Equipment | 1 | 4% |
| Exterior Lighting | 1 | 4% |
| Fuel System, Gasoline | 1 | 4% |
| Suspension | 1 | 4% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Complaints by incident year
What owners report
“The consumer had to use excessive force to steer the vehicle. The dealer stated the power steering system was leaking fluid and needed to be serviced. The problem re-occurred, and then the dealer stated the rack and pinion needed to be replaced. *jb”
Steering · filed Apr 24, 2003
“I was tricked into buying this vehicle, being a first time buyer and divorced. Including this major fuel leak (which has not been established exactly where the leak is coming from) the transmission is gone. Even if the transmission is replaced the vehicle is still to hazardous to drive. I am at my wits end with this…”
Fuel System, Gasoline · filed Jan 20, 2000
“Infiniti, the manufacturer, issued a recall campaign for 1991 and 1992 model q 45's. Mine is a 1990 model, which has all of the warning signs of the fire danger involved in the stereo speaker recall that was instituted, however, infiniti refuses to include the 1990 models. They admitted they have had reports of…”
Equipment · filed Jan 19, 2000
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- TAKATA SEAT BELT BUCKLE FAILURE
Engineering Analysis EA95007 · opened Mar 10, 1995 · closed Aug 2, 1995 · led to recall 95V103002
Technical service bulletins
10 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 1990 Infiniti Q45.
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.
ITB13-007H · Service Bulletin/Repair Instructions · issued Feb 27, 2023
WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB09-039J · Service Bulletin/Repair Instructions · issued Feb 27, 2023
WHEEL BEARING COLLISION DAMAGE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB10-067C · Service Bulletin/Repair Instructions · issued Feb 22, 2023
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…
ITB-08-024A · Service Bulletin/Repair Instructions · issued Jan 27, 2014
Infiniti: tire pressure monitoring system (tpms) warning light on/blinking. No models or model years listed. *pe updated on 08-11-2011. *kb
ITB-09-050 · Service Bulletin/Repair Instructions · issued Sep 30, 2010
Infiniti: vent control valve replacement. No applied vehicles affected: all models; no model years listed. *pe
ITB-09-062 · Service Bulletin/Repair Instructions · issued Nov 17, 2009
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
ITB-09-020 · Service Bulletin/Repair Instructions · issued Apr 6, 2009
Air bag harness replacement. *tw
ITB97016 · Service Bulletin/Repair Instructions · issued Feb 26, 1997
1997 qx4 wheel balance machine adapter kits. *tw
ITB97011 · Service Bulletin/Repair Instructions · issued Feb 19, 1997
Engine hard to start , hot or cold. *tw
FC0008767 · Service Bulletin/Repair Instructions · issued Aug 1, 1993
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 1990 Infiniti Q45 in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 1990 Infiniti Q45?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.