Pre-purchase inspection checklist — 2004 Infiniti Q45
The 2004 Infiniti Q45 has significant concerns with airbag reliability and brake signal issues, as indicated by recalls. Complaints focus on electrical system failures and occasional engine and steering problems. Ensure you address these issues during inspection and test drive for a safer purchase.
Known issues to inspect
Airbags may not deploy
How to check: Verify airbag light turns off after ignition
Brake light may malfunction
How to check: Check all brake lights illuminate when pressed
General electrical failures
How to check: Inspect all electrical components function
Test-drive walkthrough
- 01
Cold start
What to check: Listen for engine misfires or rough idle
Red flag: Persistent rough engine idle
- 02
First minute idling
What to check: Check dash for warning lights
Red flag: Any warning light remains lit
- 03
City driving
What to check: Ensure smooth brake pedal operation
Red flag: Spongy or unresponsive brakes
- 04
Steering tests
What to check: Feel for responsiveness in steering
Red flag: Steering is loose or unresponsive
- 05
Parking maneuver
What to check: Test all lighting functions
Red flag: Brake or turn lights fail
Questions for the seller
Use this exact phrasing.
- Has the airbag recall been completed?
- Are there any electrical issues now?
- Can you share recent repair receipts?
- Have you experienced any engine issues?
Documents to request
Don't sign anything until you have these.
- Recall repair documentation
- Maintenance records
- Title and registration
- Vehicle history report
Generated by gpt-4o on 8/20/2026. Grounded in the NHTSA recall corpus and owner-complaint patterns for the 2004 Infiniti Q45.