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: 74,104 (31,000–107,000)
4 model years affected: 2005, 2011, 2012, 2013
39 people reported this problem
31 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>
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.
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 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 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 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
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.
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 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 QX56107,000
Same issues...clunks and rattles when cold, settles down when warmed up. Infiniti dealer diagnosed as timing chain. This vehicle costs you 20% of it's current value for one part consistently and they (Infiniti) still don't believe it's a problem. Going to free up the timing chain tensioner with some WD-40 and dump this on a dealer.
2011 Infiniti QX5681,000
Same noise. Local mechanic thought it was the water pump. When that didn't fix the noise, he did some research and told me the timing chain needed to be replaced. Bought the car used, no help from where I bought it or Infiniti.
2012 Infiniti QX5674,000
We experienced the same problem as everyone else here. A luxury 70k SUV should not have these issues. InfinitiUSA customer service wasn't any help as we were outside of warranty by 4K. They would not even acknowledge there is a problem with this model. There was another QX56 there for the same problem. The dealer said this is a very common problem for these and they repair a lot of them. Maybe we should all come together on this, as there is power in numbers. Any thoughts? InfinitiUSA needs to make this right!
2011 Infiniti QX56100,000
Same noise as everyone else when the engine starts up. Quoted by Crest Infiniti for 5K (before tax) but after reading the posts here, i think they can definitely do better. It is quite disappointing that Infiniti will not consider this as a recall. They are essentially setting a limited lifetime for QX56s at 100K with price tag of 5K for timing chain replacement or 15K for engine replacement. Who would want to pay 65K to drive 100K (or less)?? This does not speak well for Infiniti's quality or engineering. I have also contacted Infiniti (10/1/15) for them to step up and hopefully by now, there will be enough of these incidences for them to at least help out with the cost. I'll will report back with their response. UPDATE 10/2 Infiniti Consumer Affairs contacted me back the very next day and worked with my dealership to offer me the repair cost for parts only. I am very impressed with Infiniti Consumer Affairs and Crest Infiniti! Saved us about 4K!!
2012 Infiniti QX5646,000
Same as others, hissing sound and stalling. Dealer says it is the timing chain that has been recalled. Luckily it is still under warranty.
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