Check a VIN

2004 Infiniti Q45 problems

The most common problem on the 2004 Infiniti Q45 is electrical system. Its complaint count is close to a typical Q45 model year.

Typical yearClose to a typical year
Owner complaints
7
Recalls
2
Service bulletins
55
Worst area
Electrical
Fuel economy
18mpg

The worst 2004 Infiniti Q45 problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

  • Electrical
    3
  • Acceleration
    2
  • Engine
    2
  • Lights
    2
  • Steering
    2

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Electrical
    3
  • Acceleration
    2
  • Engine
    2
  • Lights
    2
  • Steering
    2
  • Body
    1
  • Brakes
    1
  • Seats
    1

Recalls 2

Air bags: side/windowReported February 28, 2012 · 1,349 vehicles affected
What is wrong
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.
Remedy
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.

Recall number 12V079000 · Recall details

Exterior lighting: brake lights: switchReported October 13, 2004 · 96 vehicles affected
What is wrong
On certain passenger vehicles, the brake lamp switch may malfunction.
Risk
If this occurs, the brake lights will not illuminate when the brake is applied, which could result in a crash.
Remedy
Dealers will replace the brake lamp switch. The recall began on october 25, 2004. Owners should contact infiniti at 1‑800‑662‑6200.

Recall number 04V497000 · Recall details

See all 2 recalls for the 2004 Infiniti Q45

Defect investigations

Non-deployment of Side Thorax Air BagsOpened April 1, 2009, closed April 3, 2012

The subject vehicles are equipped with seat-mounted, side thorax air bags for the driver and front passenger.This investigation revealed that faulty side air bag module electrical connectors located under the driver and front passenger seats can cause an interruption in the electrical circuit that will drop the input voltage below the specified range.As a result, the air bag warning lamp illuminates on the instrument panel and the affected side air bag becomes deactivated.In June 2009, Nissan conducted a service campaign to repair the defective air bag electrical connectors in the subject vehicles (both Infiniti Q45 and M45 models).In June 2010, Nissan sent a second notification concerning the 2009 campaign to owners of vehicles that have not been remedied.Nissan is now conducting a safety recall of the Q45 vehicles not remedied under the service campaign (approximately 1,349 vehicles; see the federal safety agency Safety Recall No. 12V‑079 for further details).The M45 vehicles are not included in the recall; however, Nissan is re-notifying owners of M45 vehicles that were not remedied under the previous service campaign.See attached report for more information.A safety-related defect trend has not been identified in the Infiniti M45 vehicles at this time and further use of agency resources does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by the federal safety agency that no safety-related defect exists.The agency will monitor the issue and reserves the right to take future action if warranted by the circumstances.The ODI reports cited above can be reviewed online at www-odi.the federal safety agency.dot.gov/owners/Searchreference under the following identification (ODI) numbers: 10327196 and 10402282

EA09005

Side air bag non-deploymentOpened December 2, 2008, closed April 1, 2009

The subject vehicles are equipped with seat-mounted, side torso air bags for the driver and front passenger.this investigation has revealed that faulty side air bag module connectors located under the front seats can cause an interruption in the electrical current that will drop the input voltage below the specified range.as a result, the air bag warning lamp illuminates and the affected side air bag is deactivated.the rates of complaints, field reports and warranty claims related to the subject issue are very high.for example, nissan submitted 4,853 warranty claims on 3,551 distinct subject vehicles out of 13,836 total subject vehicles.also, analyses of warranty claims indicate an increasing failure trend over time.this preliminary evaluation has been upgraded to an engineering analysis (ea09-005) to further study the issue.

PE08067

Technical service bulletins for the 2004 Infiniti Q45 55

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 55 bulletins for the 2004 Infiniti Q45

2004 Infiniti Q45 fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
4.5L 8‑cylRWD162218

What 2004 Infiniti Q45 owners say

Most recent owner complaints, unedited.

Filed Jan 31, 2019 · Body, Steering · MD

Tl* the contact owns a 2004 infiniti q45. The contact stated that the vehicle's frame was corroded. The vehicle was included in the federal safety agency campaign number: 11v244000 (steering, suspension). The manufacturer stated that they would not pay for the repair. The dealer was not contacted. The contact kept the vehicle parked and had not driven it in over two years. The vehicle was not diagnosed or repaired. The failure mileage was unknown.

Filed May 8, 2017 · Engine · 111,000 miles · NM

Tl* the contact owns a 2004 infiniti q45. The contact stated that while driving at 40 MPH, the engine stalled while the service engine soon warning light and another unknown light illuminated. The vehicle was able to restart. The contact stated that the vehicle failed to accelerate after the failure occurred. The vehicle was taken to an independent mechanic where it was diagnosed that the cam position sensor failed and needed to be replaced. The vehicle was repaired, however the failure recurred. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 111,000. The VIN was not available.

Filed Sep 23, 2014 · Electrical, Engine · 95,000 miles · MD

I was driving and dashboard lights came on, then vehicle cut off on the highway. I assumed it was a bad alternator, but it was a defective crank sensor.

Filed Jan 11, 2012 · Electrical, Lights · 37,600 miles · KS

My low beam headlamp system has now failed at two separate times, both during nighttime driving. The first was on november 2, 2009, at 37,600 miles, the left hid ballast failed; nissan repaired the failure under warranty although its time-portion had expired. The second failure was at 47,600 miles on december 1, 2011. Nissan/infiniti consumer affairs were told and acknowledged that mileage warranty was no-where-near expired - but time had - yet, talked as though they would help with the repair. The quid-pro-quo was that I get an infiniti dealer to verify problem and cost to repair. At my cost of $125.88 the infiniti dealer agreed the right ballast was now bad; cost to repair approximately $1100. Nissan consumer affairs were instructed (according to ca) by a higher echelon of nissan not to repair. Ca did agree to refund my dealer cost of $125.88. Conclusion: in 2004 this was nissan/infiniti's premium product. This car was earlier reported to the federal safety agency because the fore-aft power function of the driver's seat failed at 42,170 miles and nissan would accept no responsibility. Surely the federal safety agency must reasonably think that failure of a driver's seat in its rearmost position and two failures of the low-beam headlamp system could easily place any driver and his/her passengers in a life threatening situation.

Filed Oct 4, 2010 · Brakes, Electrical · 42,173 miles · KS

2004 infiniti q45 lemon this automobile has an in-service date of 12-17-04, purchased by me on 02-08-08 at 26,670 miles with 10 months remaining on the time warranty that's expired. It was returned to major infiniti on 09-29-10 with 42,171 miles ^0,000 warranty) and an inoperative driver's seat (no rear/forward function) fixed in an unsafe position for me and impossible for my wife - (7) inches shorter. After diagnosis, major informed me the repair cost would be $1300 and that infiniti refused any warranty responsibility. I called nissan consumer affairs and spoke to emily who gave me a file # [xxx] and told me a regional specialist would call within two days, next day, september 30, I called nca again and talked to [xxx], regional specialist. She told me I couldn't have an answer on nca covering the seat problem until monday 10-4-10. October 1, I authorized ordering of the seat adjuster assembly as I had no option since our other car would be unavailable after monday. [xxx] called october 4 and said nissan would do nothing toward a warranty repair. My complaint: first, an inoperative driver's seat should qualify as a safety-related defect. My wife and I drive with a 9 inch height differential and with an inoperative seat - as it was - she couldn't drive without perching on the very front edge. Without a seat belt. I had no option but to repair this seat or abandon any notion of driving out of town. If we drove out of cell phone coverage and I became unable to drive, as in an emergency, my wife would be compelled to drive us without the security of adequate seating and seat restraints. Second, and another reason my complaint, this car has a history of electrical problems: cd @ 28395; cruise control @ 32442; battery@35193; headlight ballast and lamp @ 37694. Unrelated brake replacement @ 36396. A driver's seat should qualify as safety-related. Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed Aug 12, 2005 · Acceleration · 1,000 miles · TN

Dt:the consumers vehicle has a cruise control that has a chip that if a car gets too close to it slows down. When driving on the highway and somebody cuts the consumer off it feels like someone stepped on the brake due to an abrupt drop in speed. Contacted manufacturer, they said can't separate them because it only shuts down cruise control or it goes into the icc. The dealership says they had many complaints, but manufacturer says it is not a problem. *ak

Filed Dec 21, 2004 · Acceleration · NE

The consumer believes that the laser controlled cruise control could be a potential safety issue to an unwary driver. *nm the system does not work in the rain or when driving into the sun at sunset. The system activates the brakes while passing other vehicle and there is no audible acknowledgemet when the system slow down for a slower vehicle.

Compare the 2004 Infiniti Q45

Other model years

1990199119921993199419951996199719981999200020012002200320042005

Questions about the 2004 Infiniti Q45

Is the 2004 Infiniti Q45 reliable?

Owners have filed 7 complaints about the 2004 Infiniti Q45, close to a typical Q45 model year.

What is the most common problem with the 2004 Infiniti Q45?

Electrical system, with 3 complaints. Next is acceleration (2).

How many recalls does the 2004 Infiniti Q45 have?

2 recalls, covering air bags and exterior lighting.

What gas mileage does the 2004 Infiniti Q45 get?

Official estimates for the 2004 Infiniti Q45 range from 18 mpg combined. The most efficient version (4.5L 8-cyl, RWD) gets 16 city and 22 highway.

Share your experience with the 2004 Infiniti Q45

Tell other buyers what went wrong and what it cost. We review every report before it appears, and we never publish names, emails or VINs.

No names, contact details or links. Reports about a dealer or a person are not published.

VIN decoder

See the problems and recalls for an exact car

Buying a used 2004 Infiniti Q45?

Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.

Check its history
Is this car on a recall?Check VIN