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: 69,146 (31,000–105,500)
4 model years affected: 2005, 2011, 2012, 2013 more
21 people reported this problem
15 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>
11 people like thisFlag inappropiate
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!
11 people like thisFlag inappropiate
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.
10 people like thisFlag inappropiate
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.
6 people like thisFlag inappropiate
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.
5 people like thisFlag inappropiate
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.
5 people like thisFlag inappropiate
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!
3 people like thisFlag inappropiate
2011 Infiniti QX5673,000
Same here---$3800 repair. Out of warranty.
3 people like thisFlag inappropiate
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.
2 people like thisFlag inappropiate
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.
1 person likes thisFlag inappropiate
2011 Infiniti QX5650,000
Loud whistling noise when I start the car and when I accelerate for the first few miles.
2012 Infiniti QX5689,000
Engine was noisy during initial start up. Noise softened when truck idled but didn't go away totally. Service tech at dealership said timing chain needed to be replaced. It is covered under my extended warrant but they said may not pay if Indont have records to show routine oil changed (every 3750 moles). They said timing chain issue can be impacted by extended time between oil changes. Is this true?? Looking for my records to avoid $4500 out of pocket repair!
2012 Infiniti QX5686,000
Timing chain assembly needs to be replaced. Squeals loudly and after ten minutes goes away. Service person at Infinity said she has heard this sound a lot and knew what it was as soon as she started it. They have a problem with their most expensive vehicle and want to charge me 4550.00 dollars
2012 Infiniti QX5661,000
I've been hearing a loud whistling noise at start up in my 2012 Infiniti QX56. Took it to the dealer, turns out I needed a timing chain (they had my truck for 1 week). 2 weeks later I noticed oil leaking on my new home driveway. I immediately went to the dealer and was informed it was residual oil from replacing the timing chain. The next day I went back to the dealer because oil was infact leaking as I told them. They looked at my truck and stated I needed a new oil pan (which they kept my truck for two days waiting on the part). The same day I picked my truck up, I didn't make it home before the service engine light cam on, I called Infiniti and informed them. The service manager stated nothing to worry about they didn't reset the sensors, but it's too late on Friday to do anything and they would bring me a vehicle on Monday and pick my truck up. Well Well Well, I didn't drive on Saturday but Sunday morning I went out and I was a 1/2 mile away from my home when my truck started stalling and not accelerating I had to call for a flat bed to get towed to Infiniti, while the vehicle was on the flat bed I agin noticed oil leaking. They said they had to replaced the oil pump (they had my vehicle since 03/15/15) and it's still not ready, because it's still stalling. Just got a phone call that they have finally found the issue, the "Variable Valve Sprocket" is bad and they will have my truck until at least 03/30/15. Thank God I have the extended warranty up to 120,000 miles.
2011 Infiniti QX5674,000
Noise excessive starting car dealership says power train only 70000 warranty going to cost 3500 to fix
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