Engine is making loud whining noise and jerks. Noise is heard when the truck starts and is on iddle. There was a service bulletin issued in 2016 itb16-015. We were never notified of this campaign. When calling infinity corporate they denied fixing the issue because they could not see the maintenance record for the truck since it was not taken to an infinity dealer. The truck gets maintenance from other places like jiffy lube etc. Our claim was denied they said the campagin expired in february 2018.
2011 Infiniti QX56 engine complaints
Page 2 of 2: complaints 11 to 39 of 39, newest first, as owners wrote them.
Tl* the contact owns a 2011 infiniti qx56. The contact stated that while driving on an incline approximately 50 MPH, the vehicle loss motive power with an abnormal sound coming from the engine compartment. The vehicle was towed to the dealer infiniti of gwinnett, (3090 satellite blvd, duluth, ga 30096), to be diagnosed. The contact was informed that the timing chain needed to be replaced. The contact also stated that the vehicle was previously repaired in 2016, by hayes chrysler/dodge of lawrenceville located at (719 duluth hwy, lawrenceville, ga 30046), for a similar failure. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 169,000.
Tl* the contact owns a 2011 infiniti qx56. The contact stated that the check engine warning light illuminated upon start-up. The vehicle was taken to two separate independent mechanics to be diagnosed. The contact was informed of diagnostic trouble codes: p0420- p0430 catalyst system inefficiency. The vehicle was not repaired. A local dealer was not contacted however, the manufacturer was made aware of the failure, case number: 35634299. The approximate failure mileage was 78,000.
Tl* the contact owns a 2011 infiniti qx56. While driving 60 to 65 MPH, the vehicle jerked and an abnormal noise was heard from the engine area. Also, the service engine indicator illuminated. The contact had to decelerate due to the noise. The contact drove the vehicle to an independent mechanic to be diagnosed, but no failure code was found initially. The mechanic reset the codes, test drove the vehicle, performed a second diagnostic test, and located failure codes for the timing chain, catalytic converter, and exhaust system. The manufacturer informed the contact that the vehicle was not included in the unknown manufacturer recall for the engine timing chain and catalytic failure. The vehicle was not taken to a dealer. The vehicle was not repaired. The approximate failure mileage was 200,500.
The catalytic converter bank 1 needs to be replaced. This seems to be a common issue with turn 2011-2013 infinity qx 56 and infinity should have issued a recall for the faulty converters.
Timing belt and catalytic converter failure confirmed my infiniti of marietta
Tl* the contact owns a 2011 infiniti qx56. The contact heard an abnormal noise coming from the vehicle. The vehicle was taken to pearson infiniti (11701 midlothian turnpike, midlothian, va 23113, 1-(804) 527-0300) where it was diagnosed that the timing chain needed to be replaced. The contact was informed that the dealer would check tsb number: 16-015 and voluntary service campaign: p6305 to determine the guidelines to repair the vehicle. The vehicle was at the dealer waiting to be serviced. The manufacturer was notified of the failure. The failure mileage was not available.
Tl* the contact owns a 2011 infiniti qx56. When the vehicle was started, an unusual noise was heard from the engine and the check engine indicator illuminated. The vehicle was taken to nalley infiniti marietta (404‑994‑4328, located at 2020 cobb pkwy se, marietta, ga 30060) where it was diagnosed that the timing belt needed to be replaced. The manufacturer was not made aware of the failure. The failure was not repaired. The VIN was not provided. The failure mileage was approximately 120,000.
Tl* the contact owns a 2011 infiniti qx56. While operating the vehicle, a rattling noise was present coming from the engine compartment. The rattling noise became more prevalent after starting the engine. The vehicle was examined by an independent mechanic who indicated that the timing belt was faulty. The vehicle was not repaired. The manufacturer was notified, but no assistance was offered. The local dealer was not notified. The failure mileage was 90,000.
Tl* the contact owns a 2011 infiniti qx56. The contact heard an abnormal noise when the vehicle was being fueled and the check engine warning indicator illuminated. The vehicle was not taken to a dealer or an independent mechanic for diagnostic testing. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 126,557.
"takata recall" only owner of 2011 qx56, always on time with proper maintance. After a recall on the timing chain 2 days after picking up vehicle the service engine light came on, I called the dealer they advised it was normal to give it a few days. After 3 days light ses light came off, then about 8 months later the service engine soon light was back, got it checked and it's the catalytic converter.
Timing chain failure and also catalytic converters failed.
Tl* the contact owns a 2011 infiniti qx56. While operating the vehicle and depressing the accelerator pedal, a squealing and clapping type noise was heard from the engine compartment. The vehicle was taken to the local dealer (coulter infiniti, 6225 east test dr., mesa, az 85206) where it was diagnosed that the timing chain was faulty. The vehicle was not repaired. The manufacturer was notified of the failure. The VIN was not available. The failure mileage was 78,000.
My vehicle needs two catalytic converters replaced in order to pass smog. Infiniti dealer wants $5600 to make this repair! This is a common problem for this vehicle and should be a recall item.
The service engine soon light came on, and I brought the vehicle to holmon infiniti in mapleshade, nj where I purchased the vehicle. The diagnosis was a bank 2 catalytic convertor failure. I had it replaced at a cost of $2,661.79 on thursday march 29, 2018. On saturday march 31, 2018, the bank 1 catalytic convertor failed. Infiniti consumer affairs provided some assistance with the second repair. They paid for the parts and I paid the labor of $1,385.63. Infiniti consumer affairs would not reimburse me for the parts for the first repair because "I already paid for it". Had I known about this apparently common problem, I would not have paid for the first one without contacting them first. It appears to be a known issue if they were willing to give me any assistance at all, and I would think that would be extended to repairs already paid for by the consumer.
Today, I was told that I have to replace the catalytic converter, which going to cost me $2,000. I am the original car owner. I researched other sites and it appears there catalytic converter issues on infiniti 2011 - 2013 qx56 vehicles. Please look into these websites. There should be some type of recall for these vehicles regarding the catalytic converter. Refer to websites: https://infinitiforum.net/infiniti-forum/archive/index.php/t-13616.html https://repairpal.com/timing-chain-and-exhaust-stay-away-from-infinit-qx56-and-better-stay-from-all-infiniti-cars--314 https://forums.edmunds.com/discussion/35247/infiniti/qx56/2013-qx56-catalytic-converter-premature-failure http://repairpal.com/abnormal-noise-from-timing-chain-area-266 please consider a recalling the catalytic converter on these vehicles.
Catalytic converters have failed several times. Left side catalytic converter replaced by previous owner in 2013. Right side catalytic converter replaced by current owner in 2016. Left side catalytic converter needs to be replaced again. Contacted dealer and infiniti consumer affairs. They did not offer a solution.
Engine is making a loud noise on the front right side. Took it to my mechanic and he said is the timing chain and oil jet.
Tl* the contact owns a 2011 infiniti qx56. While driving various speeds, the check engine warning indicator illuminated continuously. The vehicle was taken to sewell infiniti of fort worth (5135 bryant irvin rd, fort worth, tx 76132) where it was diagnosed that the catalytic converter needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 83,000.
Takata recall-the check engine light come on shortly after the time chain was replaced which the codes indicated the cataylic converter needs to be replaced. The vehicle was stationary at my house. The time chain was replaced approximately 8 months ago.
We purchased this vehicle used on may 5, 2017. My wife was driving it down a city street at less than 45mph, and it broke down on us on may 23rd, and was sent in for repairs. Told it was a relay or an issue with the timing. Got the vehicle back on june 1, and here it is june 7th and at the same location as before, at the same speed, it broke down with the same issue. We've owned the vehicle for one month and been in the shop twice. Please help as this has the potential to be a very costly repair.
Tl* the contact owns a 2011 infiniti qx56. After the vehicle was started, the service engine soon warning indicator illuminated. The vehicle was taken to a dealer where it was diagnosed that the catalytic converter needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.
I'm currently dealing with the timing chain nightmare so many others have had and are having. Of course just as most of the others I'm out of warranty and really frustrated that infiniti hasn't stepped up to the plate to address the problem properly as opposed to renaming the qx56 to qx 80 to save themselves, leaving consumers scrambling with expensive time consuming fixes to a known defect on their part. Where's the accountability on their part, do a certain number of people have to die or be injured before the consumers are provided with the proper assistance? Who really looks out for us?
The SUV was driving without issue; however, if the timing chain had broken we would have had an engine stall which could have caused an accident. We heard a noise in the car and decided to be safe and take it in for service. After getting to the infiniti dealership of gwinnett the noise had subsided. We explained we heard a whining noise when the car was starting up that went away after a time. The noise wasn't even evident but they knew what it was before even hearing it. After letting the car cool down they started the engine up again and heard the noise. They let us know this had confirmed the initial diagnosis of a timing chain issue. After getting home and looking up the issue with the car I was surprised to see so many people talking about this issue. Apparently infiniti has a defective oil pump that lubricates the chains that caused this issue. I wanted to voice my concern and displeasure with the timing chain issue that appears to be a common issue with the 2011 qx56.
Timing chain failed, needed to be replaced, $6000+ repair.
Through my research and speaking with infiniti mechanics there has been a known issue with timing chains and associate parts that are a hazard and a major expense to 2011-2012 infinity qx56 owners. This issue will leave you stranded somewhere!! It happens to my wife and I three times!!! I had to get it towed all three times!! The hazard is while driving on highway the engine just loses all power leaving the hazard of someone running in back of you. If you driving up an incline and this problem comes about your vehicle will stall an you can possibly start rolling backwards. So from my research this problem has been happening to people either right before there warranty ends at 70,000 miles or right after (like me) at 74,000 miles. I called infiniti and they refused to help me in any way. The guys at my dealership said its a hit or miss with them helping owners of the qx56 that's over the warranty. I was already $1500 in the whole on parts they thought were the problem and now they want to charge me an estimated $3,000-4,5000 to do the rest of the work. Its a fact that infiniti knows they have this issue and refuses to recall or help the owners. I will never purchase a infiniti again!!! And will spread the word around about them!
I noticed the vehicle started making a loud whistle noise emanating from the engine during cold start-ups. Approximately 2 weeks later I took it for service at the orlando infiniti dealership on january 5, 2016. As soon as I described the issue the service advisor and multiple technicians immediately said "is the timing belt." prior to this vehicle I owned a 2005 qx56 that I drove for 10 years with over 180, 000 and never had any issues. Now I look online and everywhere I look I find that it is a very common issue with this vehicle. It is so common that the infiniti dealership has one technician dedicated to working this issue alone. While at the shop I saw at least 5 more qx56 vehicle in for the same issue. Now I am looking at a repair bill over $4500. I never had any vehicle with 90,000 miles and having this issue. It is way too common and it is a crime that infiniti has not categorized this issue as a full recall. These are top dollar luxury vehicles!!!
With 72000 miles on the vehicle, two thousand over warranty, the timing chain has to be replaced. Infiniti refuses to offer any financial assistance when it is an obvious manufacturing defect. That is evidenced by the fact that replacement parts have been completely re-engineered. A timing chain failure at highway speed would result in a serious accident or fatality. The vehicle has been carefully maintained by nissan.
Problems with the timing belt chain on newer model infiniti qx56. Problem of car making whistling noise appeared early after purchase and intermittently thereafter but became prominent in july 2011. Appears to be a recurring problem with this vehicle model. Dealer had to replace the entire engine on the vehicle to address the issue. However, we believe the underlying defect in the timing belt chain will continue to occur and that there is the potential the engine could fail and cause a major accident(s) and/or fatalit(ies).
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