2003 Infiniti QX4 problems & reliability
20 owner complaints filed with NHTSA for the 2003 Infiniti QX4, alongside 3 safety recall campaigns. 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.
1 complaint report injuries (4 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Suspension | 8 | 40% |
| Structure | 6 | 30% |
| Service Brakes, Hydraulic | 3 | 15% |
| Steering | 2 | 10% |
| Air Bags | 1 | 5% |
| Engine | 1 | 5% |
| Fuel/propulsion System | 1 | 5% |
| Power Train | 1 | 5% |
| Visibility | 1 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Complaints by incident year
What owners report
“I keep getting notices about this airbag recall, but this vehicle was donated to hudson high school and broken down for parts. This vehicle hasn't been on the road for over 3 years. Please take this off the recall list.”
Air Bags · filed Jul 31, 2019
“Bought a used car from a used car dealer with 1 previous owner. In 2011 a recall was supposedly done by indicating "inspected!" why wasn't the parts replaced?”
Steering · filed Jun 20, 2018
“2003 infiniti qx4. Consumer writes in regards to vehicle front strut tower severe rusts and cracks recall issues. *smd *tr”
Structure · filed Apr 4, 2018
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Desiccated Air Bag Inflator Rupture
Engineering Analysis EA21002 · opened Sep 17, 2021 · open
- Frame/Body Structure Corrosion
Preliminary Evaluation PE11004 · opened Jan 28, 2011 · closed Jun 30, 2011 · led to recall 11V244000
Technical service bulletins
71 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2003 Infiniti QX4. The 10 most recent:
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 =…
ITB09-063C · Service Bulletin/Repair Instructions · issued Apr 13, 2026
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.
ITB13-052E · Service Bulletin/Repair Instructions · issued May 20, 2024
WINDOW GLASS WARRANTY INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB17-009H · Service Bulletin/Repair Instructions · issued Apr 30, 2024
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.
ITB13-007I · Service Bulletin/Repair Instructions · issued Apr 30, 2024
WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB09-039K · Service Bulletin/Repair Instructions · issued Apr 29, 2024
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; 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.
ITB16-006A · Service Bulletin/Repair Instructions · issued Mar 24, 2021
NAVIGATION MAP DATA UPDATE MATRIX This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB11-003F · Service Bulletin/Repair Instructions · issued Mar 10, 2021
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
The 2003 Infiniti QX4 has 3 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
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 2003 Infiniti QX4?
- · 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.