Abnormal Noise From Timing Chain Area on Infiniti QX56

An abnormal noise may develop from the timing chain area, Our technicians tell us it may be necessary to replace the variable valve timing camshaft shaft sprockets to correct this concern.

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Average mileage: 76,210 (31,000–111,000)
4 model years affected: 2005, 2011, 2012, 2013
75 people reported this problem
61 people shared problem details
Car makes whistling noise upon start-up, which goes away after about 10 minutes. Finally, the car stalled and needed to be towed in to the dealer on a flat bed truck. Originally, the dealer said it needed a new engine, but after further review they blamed it on a faulty timing chain.....with a repair quote of between $4000 - 5000. This car is only 2 years old!!! I smell a recall. Too many people with the SAME EXACT PROBLEM! **UPDATE**: Just unloaded the beast after getting the repairs done. I felt like I was playing hot potato and needed to get rid of this vehicle before something else happened, knowing that they do not stand by their vehicle and try to blame the buyer for their mistakes, in effect, soaking their pocketbooks (that's a wallet for all you youngins', lol) in the process. Also, just an FYI for everybody else who is told their car is an anomaly and they've never heard on anybody else having this issue....I believe that they are flat out lying. Many dealerships have told me that this is a common repair. I was told that the issue is that the timing chains made for the car were too small and become fragile and break over time (those 6 years old Japanese kids sure don't make them like they used to). I'm pretty sure that they decided to rename the QX56 and replace (ie. "rename") it with the name QX80 was because they knew in time that they were going to have an expensive recall on their hands and assumed that it would tarnish the reputation of that particular model.
I have been having the issue for a while, (very noisy at start up) then it would smooth out after about 10 minutes. I thought it was the cooling fan or something else. I got in yesterday morning and no Power, irregular idle, then it smoothed out. Took it directly to the dealer, thought maybe bad gas. Called me today 100% sure its the timing chain....a known issue with this vehicle. $4000 repair. We maintain the vehicle, and actually had even tried to extend the warranty, but they were no very good at following up on that? Anyway I have called the consumer affairs folks for some help and hope they do the right thing...at least from my perspective. This is by far the most expensive vehicle I have ever purchased by 2x and certainly would not have expected this type of an issues at such low mileage. I have 300K on my 2002 suburban and never had a repair over 1500...my 4th child is still driving it!
2011 Infiniti QX56105,500
Loud noise coming from the front end of my 2011 QX56. Report from dealer is issue with timing chain. Solution. . . Replace engine at a cost of 16k. I don't understand how the Infiniti people can sell a SUV for what this one cost and have the engine go out at 105,000 miles. Crazy!! Told me they could give me a good deal on a trade-In. Yeah, Right!! Not sure what to do. Seems like there should be other options.
2011 Infiniti QX5690,000
My car was making a high pitched winding sound on start up and wouldn't stop. Now having to replace timing chain at a cost of $3000!! Bought it used only 9 months ago and have had to repair both catalytic converters, air sensory intake and now this...... very concerned with the quality of this car with all these issues......looking at trading it in over the next year or so...... first Infiniti I have ever purchased and love the ride, look of the car but not so much regarding mechanical end of it. Looking to see if others have had issues same or different than me.
2011 Infiniti QX5678,000
78,000 Miles QX56 With Whining Noise At Startup Check engine light comes on intermittently. Codes thrown point to timing chain. Took QX56 to dealer and they immediately diagnosed the problem from the sound they heard. The dealer mechanics of Kings Infiniti already knew what the problem was before checking the check engine light codes. New timing chain is needed, sprockets aren't needed but highly suggested because they would be exposed and cost just as much to repair later if they go bad in the future. Total estimated cost is $5,000. Has anyone had any success getting this covered under an extended warranty? If so, what company covered it? I'm looking into getting an extended warranty although I've had them in the past and the warranty paperwork has never been good for more than just desk fodder. Any suggestions are welcomed.
Hissing noise coming from the engine block very early in the morning or when the engine is very very cold. If allowed to warm up for about 10 minutes it drives just fine. Dealership says its a timing chain issue that needs to be replace. Total cost is about $4600.00. Never hear of that. Don't understand how that can happen in a relatively new car.
2011 Infiniti QX5673,500
I noticed the same noise at start-up like everyone else. It sounded like a belt slipping but not a major issues. I took it in to the dealer for it's oil change at 75,000 miles and brought it up to the service writer. He said they would have to look into it and gave me loaner car. I went in the next day for him to explain it to me in person as it was either going to be a $4k repair or a $16k engine replacement. I called infiniti customer affairs and they said it's not covered as I am outside of warranty. They also said this is not a problem with these vehicles. It turned out to be a $4k trimming chain repair, the tensioner failed. A week later when I returned to pick up my QX56, there were two others that had come in on that day for the same issue. The dealer says it's a problem with these but Infiniti says it's not. Sounds like Infiniti has a major problem on their hands that they do not want to correct!
2011 Infiniti QX5676,000
Just outside of warranty and it's a $3700 repair. I went to Infiniti in attempt for assistance on the repair and was denied as they said I was really far outside of warranty. 6k miles seems to be a little extreme for Infiniti. I'm not sure they believe in the product they are selling. It was a week to complete the repair. It seems to be an ongoing problem.
2011 Infiniti QX5676,000
Load whining noise only on start up for 10 minutes. Timing chain needing fixing for 4500 or full engine replacement for 15k. Are you serious? Everyone is having this same problem. Infinity better get this sorted. They are losing clients fast.
2013 Infiniti QX5640,000
I have asked the dealership about the issue and they say they are not sure what is going on because it has never done it while I have had it in for an oil change. Fortunately the car is still under warranty. Now that the noise has come back and I have read all of these stories I've called the dealership to come pick it up. Hopefully the issue will be resolved.
2011 Infiniti QX5673,000
Same here---$3800 repair. Out of warranty.
2013 Infiniti QX5639,980
My car started making a loud whining noise at start up but would go away after 5-10 minutes. I was out of town the next day when the car started sputtering like it was out of gas but my meter said I still had 1/4 tank left. I thought it was bad gas and put in some Heet to burn off the water which helped. It still makes the whining sound every time I start up the car for the day. After reading everyone's complaint, I'm going to get rid of this car. It's only 2 years old with barely 40k miles! For the money we paid, this should be a much better quality car! I am also going to file a complaint with the better business bureau or something. We need to all get together to file a class action suit. I'm not a sue-happy person but 75,000 people have had the same problem but they don't make it a recall. Ridiculous!!!
2011 Infiniti QX5680,200
timing chains needs replacement. Quoted $5000 at Infinity of gwinett in georgia. The dealer is telling me that if the oil is not changed every 3700 miles this happens as if this is somehow my fault or that of the previous owner. Not only is nissan not owning up to an obvious design flaw but the are attempting to make a nice profit in the process. This is offensive!
2011 Infiniti QX5684,000
same-costs $3,500 to fix. ugh. Had my Toyota for 10 years with no trouble-have had this car for 2.
2012 Infiniti QX5636,000
Needed to get new tensionors. It's an 11 hour labor job. Luckily under warranty or it would have been 4-5k repair.
2011 Infiniti QX5688,000
had a whine that increased with engine rpm for the first 5 or so minutes then would go away. Took it to the dealer and they said it was an oil lubricator and timing chain problem $3.800 quote. How many of these problems does it take for any kind of recall to happen?
2011 Infiniti QX5687,000
Car was sputtering and took in to dealership. Was informed it was timing chain and that it had stretched. Personally I've never heard of a timing chain stretching. It's not as if it's a timing belt. I was told this particular engin is not a newer model but rather it had been used a few years prior. I was thinking that it might be due to newer technology. I think Infiniti has a flawed engin.
2011 Infiniti QX5673,000
Engine is whining at take off and then goes away after 10 minutes. I would NOT expect this from a luxury car with low miles. Bit disappointed.
2012 Infiniti QX5679,000
needs timing chain assembly replaced
2011 Infiniti QX5670,300
Infiniti refuses to to repair under warranty. We were 300 miles over.
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