Most common 2005 Infiniti QX56 problems
Share of the 80 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Infiniti QX56 complaints by model year
Best QX56 years: 2009, 2007, 2010. Years to avoid: 2011, 2004, 2012. Compare all years →
2005 Infiniti QX56 recalls (3)
Engine and engine cooling
Nissan is recalling certain model year 2004-2006 armada, titan, Infiniti qx56 and model year 2005-2006 frontier, pathfinder and xterra vehicles. The intelligent power distribution module (ipdm) assembly contains an engine control module (ECM) relay that has a diode for electrical current noise reduction.
Remedy: Dealers will replace the ECM relay inside the ipdm assembly. This service will be performed free of charge. The safety recall began on December 6, 2010. Owners May contact Nissan at 1-800-647-7261.
Fuel system, other › Storage › Fuel gauge system
Nissan is recalling certain model year 2005-2009 titan, armada, and Infiniti qx56 vehicles. The instrument panel fuel gauge May inaccurately display that the vehicle still has some fuel, typically about one quarter tank, when the fuel tank is empty.
Remedy: Dealers will replace the fuel sender unit inside the fuel tank with a new improved sender card. This service will be performed free of charge. The safety recall began on March 22, 2010.
Equipment › Appliance › Air conditioner
Nissan is recalling 180,664 my 2005-2006 titan, armada and infinity qx56 vehicles manufactured after March 17, 2005, that are equipped with a visteon air conditioning condenser fan motor. The fan motor May not be properly sealed allowing excessive water intrusion and inadequate drainage of moisture.
Remedy: Dealers will install a 'thermal protector kit' and test the air conditioning condenser fan motor and replace it if necessary. The recall began on August 2, 2008. Owners May contact Nissan at 1-800-647-7261.
What 2005 Infiniti QX56 owners say
Brakes all 34 →
I started to break saw a major traffic jam . And my steering started shaking and my breaks did not Stop like they're supposed to.almost was i huge crash w I th my [redacted] and [redacted] old
I am having brake issues with my 2005 Infiniti QX56. The brake light keeps coming on and it makes a grinding noise. It is also very hard to get it to come to a stop. Just yesterday, I almost could not get the vehicle to stop at a red light. I am also having an issue with the fuel gauge. I have run out of fuel 3 times and each time the the gauge is showing between 1/2 and 1/4 full. Back in September of 2017 we were on a major highway. All of a sudden we lost power and we were going 70 miles an hour. We were in the passing lane and we lucky to get over to the side of the road. We were almost in a severe accident. I have researched both issues online. I know that there have been recalls on these issues. When I called Infiniti about this, I was told that there was in fact recalls but my vehicle was not on the recall list. …
Fuel & propulsion system all 25 →
The contact owns a 2005 Infiniti QX56. The contact stated that while driving approximately 75 MPH, the vehicle lost motive power and stalled. The vehicle was later towed to the residence where it was discovered that no fuel was present although the fuel gauge indicated that there was a quarter tank of fuel in the tank. After adding fuel, the vehicle was restarted, and the vehicle operated as designed. The cause of the failure was not yet determined. The manufacturer was notified of the failure and the contact was informed that the vehicle was not included in the NHTSA Campaign Number 10V074000 (Fuel System, Other). The contact indicated that the vehicle had experienced the same failure listed in the recall. The local dealer was not contacted. The failure mileage was 150,000.
I am having an issue with the fuel gauge on my 2005 Infiniti QX56. The fuel gauge is not reading correctly. It stops reading correctly once it reaches about half a tank of gas. I was driving on the freeway at night and I ran out of gas. This was a very scary situation because I had my kids in the car with me and at the time I had no idea why the vehicle completely shut off because my meter was showing that I had half a tank of gas. I took the vehicle to a mechanic the next day and he was able to tell me after a few days of me taking it by the shop to get a reading, that their was a problem with the fuel gauge reading which meant that the tank would have to be dropped to fix the problem. I later read up of common issues with the vehicle and saw that this was a common issue and that there was a recall for the same issue. …
Electrical system
My airbag light stays on constantly. There is a knocking sound that occurs as well when I'm driving. I'm concerned if I'm involved in a collision my airbags will not deploy. I contacted Infiniti and was told they need to reset it and will cost $800.00 and my extended warranty did not cover it and was not part of the recall list. The ipdm ECM relay switch causes my instrument cluster gauge to go in and out, the check engine light comes on, my truck jerks trying to switch gears, it will sometimes start up after several tries, it causes the RPM's to read over 7 when I'm only driving 60 MPH. It should read between 2 and 3 RPM's. I'm constantly switching the ECM relay plugs to start my truck. The air bag and ipdm ECM relay was not covered under my extended warranty when I purchased my vehicle. This has been going on since I purchased it 4years ago.
My airbag light stays on constantly. There is a knocking sound that occurs as well when I'm driving. I'm concerned if I'm involved in a collision my airbags will not deploy. I contacted Infiniti and was told they need to reset it and will cost $800.00 and my extended warranty did not cover it and was not part of the recall list. The ipdm ECM relay switch causes my instrument cluster gauge to go in and out, the check engine light comes on, my truck jerks trying to switch gears, it will sometimes start up after several tries, it causes the RPM's to read over 7 when I'm only driving 60 MPH. It should read between 2 and 3 RPM's. I'm constantly switching the ECM relay plugs to start my truck. The air bag and ipdm ECM relay was not covered under my extended warranty when I purchased my vehicle. This has been going on since I purchased it 4years ago.
2005 Infiniti QX56 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 5.6L 8-cyl | 5-speed automatic | RWD | 12 / 18 / 14 |
| 5.6L 8-cyl | 5-speed automatic | 4WD/AWD | 12 / 17 / 14 |
EPA ratings. Class: SUV.
Frequently asked questions
Is the 2005 Infiniti QX56 a good car?
Based on 80 owner complaints filed with NHTSA, the 2005 QX56 rates average: 1.2× as many complaints as a typical year of the QX56 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2005 Infiniti QX56?
The brakes — 34 complaints, 43% of all complaints for this model year, most often about antilock/traction control/electronic limited slip. Next are the fuel & propulsion system (25) and electrical system (7).
How many recalls does the 2005 Infiniti QX56 have?
There are 3 recalls for the 2005 Infiniti QX56, the most recent from October 28, 2010 (engine and engine cooling). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Infiniti QX56?
The best years by complaints, compared at the same age, are 2009, 2007 and 2010. Years to avoid or approach with caution: 2011, 2004 and 2012. See the full Infiniti QX56 years comparison.
At what mileage do 2005 Infiniti QX56 problems happen?
The median mileage reported in complaints is about 92,000 miles; 20% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.