2003 Infiniti Q45 Problems, Complaints & Recalls

Source: NHTSA · Updated May 5, 2021 · 12 owner complaints analyzed

Compared with other Q45 years
More complaints than other years 3rd of 12 for complaints
NHTSA crash rating
Not rated

Owners have filed 12 complaints with NHTSA about the 2003 Infiniti Q45. That ranks 3rd out of 12 Q45 model years for complaints. The most reported problem area is engine (6 complaints, 50%), typically at around 103,000 miles. Complaints mention 1 crash, 1 injury. There is 1 safety recall covering this model year. NHTSA has opened 2 defect investigations involving it.

Infiniti Q45
Representative photo; appearance varies by model year. Photo: Unknown author, Public domain, via Wikimedia Commons.

Complaints are unverified owner reports and are not adjusted for sales volume.

Compare with another car

Most common 2003 Infiniti Q45 problems

Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.

Engine6 · ~103,000 mi
Electrical System3 · ~100,000 mi
Steering3 · ~92,000 mi
Electronic Stability Control (esc)2 · ~110,601 mi
Engine and Engine Cooling1 · ~61,000 mi
Power Train1 · ~186,241 mi
Seat Belts1
Service Brakes1 · ~110,202 mi
Service Brakes, Electric1 · ~40,100 mi
Vehicle Speed Control1 · ~186,241 mi
Problem areaComplaintsShareMedian milesOwners mention mostTypical repair cost
Engine650%103,000——
Electrical System325%100,000——
Steering325%92,000——
Electronic Stability Control (esc)217%110,601——
Engine and Engine Cooling18%61,000——
Power Train18%186,241——
Seat Belts18%———
Service Brakes18%110,202——
Service Brakes, Electric18%40,100——
Vehicle Speed Control18%186,241——

One complaint can list several problem areas, so shares can add up to more than 100%.

Complaints by year received

Peak: 2015, with 3 complaints
2009: 1200912010: 1201012013: 1201312014: 2201422015: 3201532016: 1201612017: 2201722021: 120211

n = 12 complaints · Source: NHTSA

2003 Infiniti Q45 recalls (1)

Tap a recall to see the problem, the risk and the fix.

Air bags:side/windowFeb 28, 2012 · NHTSA campaign 12V079000 · 1,349 vehicles

Problem: Nissan is recalling certain model year 2003-2005 infiniti q45 vehicles. A wiring connector for the seat mounted airbag may experience increased electrical resistance, resulting in the non-deployment of the side air bags.

Risk: Non-deployment of side air bags could increase the risk of personal injury.

Fix: Nissan will notify owners, and dealers will modify the wiring connector, free of charge. The safety recall began on march 19, 2012. Owners may contact nissan customer service at 1-800-647-7261.

To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.

NHTSA defect investigations

  • Non-deployment of Side Thorax Air Bags (EA09005) — opened Apr 1, 2009, closed Apr 3, 2012, led to recall 12V079000.
  • Side air bag non-deployment (PE08067) — opened Dec 2, 2008, closed Apr 1, 2009.

Recent owner reports

Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.

The circuit board for crank position sensor and cam position sensor have improper solder joints. This has caused the service engine light to come on, the engine may not start, power reduces, engine stalls at a traffic light or while in motion, on a city street or highway or while making a turn…

Engine · received May 5, 2021 · NHTSA complaint 11415335

Tl* the contact owns a 2003 infiniti q45. While driving 35 mph, the vehicle stalled and the service engine warning indicator illuminated. The contact was able to restart the vehicle after several attempts. The vehicle was taken to an independent mechanic where it was diagnosed that the camshaft…

Engine · received Nov 29, 2017 · NHTSA complaint 11051157

Tamara recalled my seatbelt light has been on for the last year. I were told by the infinity dealer that my car was not recall for the seatbelt. The seatbelt warning light stays on constantly in the navigation system and a little blanking icon. I am told by the dealer that i am responsible for…

Seat Belts · received Mar 29, 2017 · NHTSA complaint 10969410

Tl* the contact owns a 2003 infiniti q45. While driving various speeds, the engine stalled without warning and all power was lost. After several attempts, the vehicle was able to restart. The failure recurred randomly. The vehicle was taken to a dealer where the failure could not be determined. The…

Engine and Engine Cooling · received Aug 8, 2016 · NHTSA complaint 10894023

Start car first thing in the am. Driving normal. Within 5 miles engine shuts off without warning. Loose all power. No code appears. Auto will not start. Finally starts after 5 or 6 tries. This problem has continued to occur every two or three days over the last six months. But auto starts…

Engine · received Sep 25, 2015 · NHTSA complaint 10777700

Other Infiniti Q45 years

← 2002 Q45 · 2004 Q45 →

See all Infiniti Q45 problems by year, every Infiniti model, or the Infiniti VIN decoder.

Similar Infiniti models

Embed this 2003 Infiniti Q45 badge on your site

Copy this code into your blog or forum post. It shows live complaint and recall counts and links back here.

Frequently asked questions

What are the most common problems with the 2003 Infiniti Q45?

Owners most often report engine, electrical system, steering problems. The top one, engine, accounts for 6 complaints.

Was there a recall on the 2003 Infiniti Q45?

Yes, 1 safety recall. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.

Was the 2003 Infiniti Q45 a good year?

Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Q45 model years, the 2003 has more complaints than most years. Always get a pre-purchase inspection and check the VIN for open recalls.