On this topic:
Infiniti QX56 engine problems:
Failure of the front catalysts, due to low-quality gasoline, entails serious costs for repairing or even replacing the engine. The mixture formation mechanism assumes that all valves - both inlet and outlet - remain open for a short period during the air intake stroke. This phase is necessary for better filling the cylinders with air, due to the exhaust gases, and for afterburning the mixture in order to reduce harmful emissions. The destroyed first catalytic converter turns into ceramic dust, which can be removed from exhaust system the second catalyst interferes with it. Thus, the ceramic dust from the catalyst is gradually sucked into the engine cylinders, destroys (grinds off) piston rings, enters the oil system and is carried throughout the engine, which leads to accelerated wear of engine parts. Engine repair is complicated by the impossibility of complete dust removal even by total flushing after disassembly. The engine we studied had traces of catalyst dust, including in the intake manifold.
Solutions:
If errors occur in the lambda probes, immediately replace the catalysts with new ones or install a Stillen exhaust system without catalysts, with lambda probe correctors.
Infiniti QX56 engine lubrication system problems:
Regular problems with the lubrication system of the VK56DE engine were not noticed, with the exception of rare cases of incorrect operation of the oil pressure regulator valve. The engine noticeably "eats" oil only at high loads, which is due to its technical features.
Infiniti QX56 engine cooling system problems:
Early 2004-5 models may have a poor quality electric air conditioner cooling fan. The motor can jam, resulting in engine overheating or fire.
Failure of the engine cooling radiator due to contamination.
To see the state of the engine cooling radiator from the outside, the air conditioner condenser interferes, the cells of which are larger - dirt and fluff easily pass them, settling on the honeycomb of the cooling radiator.
In principle, there is less dirt from the inside (from the engine side), besides, the cooling fan, like a vacuum cleaner, cleans the inner surface. You can only see that the radiator is "clogged" with partial disassembly.
Solution:
It is necessary to wash the radiator at least once a year using special equipment. You cannot wash the radiator using systems such as Karcher.
Infiniti QX56 engine management system problems:
Failure of contacts and electrical wiring due to interaction with deicing reagents.
Solution:
Repair of engine wiring when errors are detected by the computer.
Fuel system problems:
A frequent occurrence is failure fuel pump... Presumptive reasons: insufficient cooling due to a small amount of fuel in the gas tank, not quality gasoline clogs fuel filter at the pump inlet (supplied with the pump), factory defect. When the fuel pump fails, first "dips" appear during active acceleration, then, gradually, the total power decreases at medium and high revs engine - the car does not run. At the same time, it starts up and works normally on Idling.
Solution:
Replacing the fuel pump.
Infiniti QX56 automatic transmission problems:
Failure of low-quality or old automatic transmission cooling hoses leads to liquid squeezing out and automatic transmission breakdown.
Solution:
Timely diagnostics.
Problems transfer case Infiniti QX56:
There are no typical problems.
Infiniti QX56 cardan transmissions:
The crosses of the front, sometimes rear propeller shafts fail during active city driving, about once every two years. There are characteristic "clatter" clicks when switching the automatic transmission selector from "R" to "D".
Front and rear drives(reducers, CV joints) Infiniti QX56:
Semi-axle falling out and destruction of the front axle gearbox, probably as a result of driving in 4H mode on asphalt or during sudden starts with inverted wheels.
Solution:
Read the instructions. Gearbox repair or replacement.
Typical malfunctions and disadvantages of the suspension:
Failure (rapid wear) of rubber bushings front stabilizer associated with a large vehicle mass and a high center of gravity. Fortunately, the bushings are inexpensive.
An unpleasant feature of the car can also be attributed to the lack of balance of the suspension, as a result of which the car is prone to axle drift in corners when hitting bumps. Infiniti Parts' reinforced stabilizer bar helps tame the bad character. lateral stability... The car will not become stiffer as a whole, but it will please with noticeably better stability when cornering. There will be no need for active "steering" when one wheel hits potholes at medium and high speeds.
In general, the suspension and chassis are very reliable.
Infiniti QX56 brake problems:
Early 2004-2007 models had extremely poor front brakes. Later Infiniti QX56 2008- equipped with enlarged brakes, which, nevertheless, are not enough for the full use of the power reserve of a three-hundred-horsepower engine. Brake discs overheat and deform due to insufficient diameter. There is a beating of the steering wheel when braking.
Solution:
Replacing with reinforced perforated brake discs with metal-ceramic brake pads partly helps to solve the problem, however, the active owners of Infiniti Parts recommends the installation of multi-piston sports braking systems, such as AP-Racing, StopTech with larger diameter brake discs.
Infiniti QX56 Steering Problems:
In general, there are no complaints about the steering, with the exception of low-quality power steering hoses. Perhaps the malfunction is associated with the owner's steering wheel "on the spot" (without moving the car), which is not recommended on any cars.
Solution:
Regular diagnostics and replacement of power steering hoses as needed. When turning the wheels, try to keep the car moving.
Problems of body control systems (locks, glass, sunroof, devices) Infiniti QX56:
Failure of wiring and tailgate locks due to interaction with deicing agents.
Doors lock cables freeze in frost - doors do not open.
On dashboard individual elements and devices fail.
Solution:
Repairs as malfunctions occur.
Infiniti QX56 air conditioning / heating problems:
Unpleasant surprises include the rear air conditioner tubes, which are destroyed by interaction with deicing reagents.
Solution:
Replacement of aluminum tubes with special hoses.
This article is dedicated specifically to the problems of the Infiniti QX56. The aim is not to present this wonderful and very reliable, in general, car as a low-quality product, consisting of imperfections and breakdowns. Most of the problems are associated with servicing in car services that do not have sufficient knowledge and experience in repairing Infiniti, inept car control, notorious anti-ice reagents and low-quality gasoline.
An important distinguishing feature of Infiniti, from our own experience, we consider the "preventive nature" of breakdowns. Before breaking down completely, Infiniti will repeatedly (sounds, knocks, bulbs) make it clear to the owner that it is time to visit the technical center and only an inattentive owner or an illiterate repairman, as a rule, bring the matter to complete destruction of the components and assemblies of the car.
Infiniti Parts, just in case, reminds us that we provide competent, high-quality service and professional repair of Infiniti QX56 at reasonable prices.
Despite its brutal appearance, the Infiniti QX56 requires an attentive and careful attitude ... Why is this luxury SUV not on the list of models popular with hijackers, and CASCO insurance does not frighten with conditions and numbers?
The answer about the elusive Joe, which no one wants, does not count. Are there any other options? No? Well then, let's try to see how the QX56 is in operation.
CERAMICS AND LIFE
This largest Infiniti is, to put it mildly, very exotic. His full mass only a couple of hundred kilograms falls short of category C, that is, three and a half tons. Its only possible motor contains more than three hundred "horses". It has a frame and a low gear in the transfer case, but all suspensions are independent. In general, something similar to the military truck GAZ-66, which has turned into a dead-end branch of development. Nevertheless, the QX56 has something in common with the notorious "shishiga": they both rarely throw their skates just like that, out of the blue. They signal for a long time with sounds, knocks, smudges, twitching, burning lamps (yes, yes, and the "sixty-sixth" has a couple of control lamps) that it is time to surrender to good hands for repair.
A 5.6-liter V8 petrol engine with a dump torque of 529 Nm accelerates the car to a hundred, according to the stated data, a little less than 8 seconds. It eats, however, while in the city about 26 liters per hundred kilometers, and on the highway in a quiet mode - about 15-16 liters. And the oil consumption when driving at high speeds or with a heavy load - say, when towing a trailer - can easily turn out to be such that it simply won't be on the dipstick by the next replacement.
The design of the motor has no weak points, but there is a reason why the engine can become completely unrepairable: from low-quality gasoline, the front catalysts crumble into ceramic dust. Once inside the engine, she “picks up” everything she can reach. This dust cannot fly anywhere, because there are rear catalysts in its path, which it also clogs. So if the diagnostics give errors on the lambda probes, you must immediately change all four catalysts or install a Stillen tuning exhaust system, where there are no catalysts. Any of these options with work will cost a little more than 100,000 rubles.
If the engine pulls poorly, then most likely the fuel pump has begun a protracted agony. The reason is the same dirty gasoline and frequent trips with low level fuel.
REDUCE THE HALF AXLE
By drive type QX56 - versatile SUV... Under normal conditions, the moment is obtained rear wheels... I must say that all copies officially supplied to Russia since 2007 were all-wheel drive. Well, if there is no switch for Auto 4WD, 4H, 4L modes in the cabin, then we have a mono-drive "American" in front of us.
Both the transfer case and the automatic gearbox are quite reliable. True, the "machine" can fail due to the flowing hoses: a characteristic weak point is at the junction point between rubber and metal. There were also complaints about the buggy switch for selecting the transfer modes.
More serious problems can arise with the front axle: destruction of the gearbox, twisting of the axle shaft, as a rule, on the right, and falling out of the left. It is believed that this is provoked by abrupt starts in 4H or Auto mode with inverted wheels. What is it worth to a powerful motor to twist an iron stick into a ram's horn?
The cardan joints are impressively thick and come with replaceable crosspieces, but the front crosspieces are only supplied complete with a shaft.
The suspensions are distinguished by a good resource, with the exception of the struts and bushings of the front stabilizer, which in our conditions can withstand 20-40 thousand km. With a run of a little more than a hundred, it's time to update the shock absorbers, and a little later the rear hubs will probably hum (change assembly). In the steering, power steering hoses require attention - it happens that they leak.
REAGENTS AND MORE
QX56 also has a number of characteristic sores. For example, due to oxidized contacts in the engine compartment, the operation of the engine control unit is disrupted. Also, Russian chemistry finishes the rear air conditioner pipes and the tailgate lock. In winter, the car may not be allowed inside due to the freezing cables of the door handles. In copies of the first years of production, the air conditioner radiator fan, located directly behind the radiator grill, is jammed, which can cause the wiring harness to burn out. Moreover, this problem is also known in America, so the reagents should not be blamed. The deicing slurry is innocent in the current radiators of the cooling system. They get clogged with dirt and burst from, simply put, local overheating. Regular washing is a guarantee of a long service life of this part. True, one cannot do without partial dismantling, because the main radiator is located tightly behind the radiator of the air conditioner.
MATCH: INFINITI QX56
SUSPENSION
Suspension compressor and rear shock struts
Period of occurrence
The destruction of the choke connections, like the death of the compressor, occurs approximately by 80-130 thousand km. exploitation.
Compressor breaks down over time rear suspension... The problem is solved by replacing it with a new compressor, unfortunately there are no analogues. But before changing the compressor, it is recommended to fully diagnose the connection compressor - pipeline to shock absorbers - shock absorber fittings - shock absorbers. Quite often, the problem in working with the rear suspension lies precisely in the notorious fittings, the connections of which with the shock absorbers rot and the pipeline begins to poison the air, and in the case of an underestimation of the machine, dirt enters the compressor along with the air, which quickly makes it unusable.
The fittings are not manufactured separately, so the panacea is to replace the tubes and shock absorbers, or to weld the fittings. In addition, malfunctions in the correct operation of the rear suspension may be associated with the death of the body position sensor. In any case, in case of any malfunctions in the suspension, first of all, comprehensive diagnostics in a car service will help.
Approximate issue price
Rear suspension compressor: 25,000-29,000 RUB(original Nissan (Infiniti)
Body position sensor: 8,000-10,000 RUB(original Nissan (Infiniti)
Compressor-shock absorber tubes: 1500-2800 rub. Pcs.(original Nissan (Infiniti)
Rear shock absorbers: 9800-11.800 RUB PCS.(original Nissan (Infiniti)
STEERING
Power steering pipes and hoses
Period of occurrence
80-130 thousand km.
Problems, diagnostic methods and solutions
One of the problems that all QX56 JA60 owners face is leaks in the power steering system. Primary diagnostics are quite trivial and available to every car owner - this is to look under the front of the car in the morning. Did you see oil stains on the asphalt? The first bell is that the power steering pipeline is leaking. As a rule, it can start flowing from one place, but according to experience, the entire pipeline wears out evenly and it has to be changed entirely. If you delay for a long time with solving the problem, then the lack of power steering fluid is fraught with failure of the power steering pump, which is already much more expensive.
Approximate issue price
Pipeline (hoses, tubes, clamp) Power steering assembly Genuine Nissan (Infiniti) 14,000-17,000 RUB
TRANSMISSION
Automatic transmission pipeline
Period of occurrence
Problems, diagnostic methods and solutions
One of the reasons for the failure of the automatic transmission on the Infiniti QX56 can be the critical wear of the automatic transmission tubes. Oil begins to leak (squeeze out) from the tubes, the level in the box drops and the automatic transmission quickly becomes unusable. Timely diagnostics and replacement of worn-out tubes will help to avoid such a problem.
Approximate issue price
Reducers front and rear, loss of drives (CV joints)
Period of occurrence
The problem usually arises over long periods of operation.
Problems, diagnostic methods and solutions
Problems of front and rear drives (gearboxes, CV joints) Infiniti QX56: The semi-axle falls out and the front axle gearbox is destroyed, probably due to driving in 4H mode on asphalt or during sudden starts with inverted wheels.
Approximate issue price
The repair budget is determined by the service based on the diagnostic results.
Cardan shaft
Period of occurrence
Failure of cardan crosspieces occurs approximately every 2-3 years or 40-60 thousand km.
Problems, diagnostic methods and solutions
Like other Infiniti models, the QX56 has a problem associated with the destruction of the universal joint shafts (more often the front, less often the rear). In the early stages, characteristic "clatter" clicks appear when the automatic transmission selector is switched from "R" to "D". Destruction of the front crosspiece cardan shaft occurs in motion, while there is a characteristic metallic knock and grinding in the area of the front passenger's feet. The VDC, SLIP lamps come on. Destruction of the case is possible front gear, as well as the transfer case housing, the cost of which is several times higher than the price of the propeller shaft.
It is best to diagnose the wear of the driveshaft crosspieces on a lift in the service, where they can accurately measure the backlash and give a verdict. On cardan shafts the QX56, unlike its fellows in lineup there is a replacement for the original front crosspieces on both shafts, both for rear-wheel drive (2WD) and all-wheel drive (4WD, AWD) versions of the car. If the rear cardan crosspieces are damaged the best option The solution to the problem is to install new original Nissan (Infiniti) propeller shafts.
Approximate issue price
Front propeller shaft original Nissan (Infiniti): 35,000-40,000 RUB
Rear propeller shaft original Nissan (Infiniti): 40,000-45,000 RUB
Front universal joint crosspiece original Nissan (Infiniti): 1800-2600 RUB
Rear cardan joint original Nissan (Infiniti): 6500-8500 RUB
BRAKE SYSTEM
Front and rear braking systems
Period of occurrence
Unfortunately, the problem can arise at any time :(
Problems, diagnostic methods and solutions
The 2004-2007 QX56 JA60 models were initially fitted with rather poor front brakes. Later models of the Infiniti QX56, from 2008 in the JA60 body, began to be equipped with enlarged brakes, which, nevertheless, are still not enough for many to fully use the power reserve of a three-hundred-horsepower engine and stop a heavy-weight unit. Brake discs overheat and deform due to insufficient diameter. There is a beating of the steering wheel when braking.
Solution:
The most budgetary, but least effective - brake disc groove. With a larger budget, it is recommended to replace the stock brakes with reinforced perforated brake discs with metal-ceramic brake pads. This system partly helps to solve the problem, but especially active owners of QX56 and lovers of an aggressive driving style are recommended to install multi-piston sports braking systems, such as AP-Racing, StopTech with an increased diameter of brake discs. These braking systems are quite expensive, but you will completely forget about the problem of brakes.
It should be noted that the distribution of braking loads is divided 70% by 30% in favor of the front axle, so that in most cases it is possible to limit the replacement of the brakes to the front only. In addition, advice for those who know how to count money: after replacing, do not rush to throw out the old brakes. When you decide to part with the car, just put the old brakes back, and sell the new ones, as a rule, they are always in demand.
Approximate issue price
Brake system from Infiniti FX50 Nissan (Infiniti): 70,000-80,000 RUB front axle, 60.000-70.000 rub... rear axle.
Brakes AP Racing, Brembo, JBT: 130,000-300,000 RUB front axle.
ELECTRIC
Dashboard
Period of occurrence
Over time, during operation.
Problems, diagnostic methods and solutions
Many drivers are faced with the fact that individual elements and devices fail on the dashboard. You can solve the problem either by visiting a handy electrician, or by buying a new dashboard, but the prices for it are quite high, and in Russia they usually do not exist, the delivery time from abroad is from 3-4 weeks.
Approximate issue price
Original Nissan dashboard (Infiniti): 33,000-55,000 RUB PCS.
Tailgate lock and wiring to it
Period of occurrence
With time in use, it is more common in large cities.
Problems, diagnostic methods and solutions
Failure of wiring and tailgate locks due to interaction with deicing agents is one of the problems that is especially evident in large cities. The solution is to replace the lock, wiring, or both. The verdict is made by the master on diagnostics.
Approximate issue price
Repair cost: from 10 000 rub. up to 30 000 rub... depending on the verdict
Door locks
Period of occurrence
50-120 thousand km. Depending on climatic conditions.
Problems, diagnostic methods and solutions
On QX56 cars in the JA60 body, as on all its younger brothers, there is a problem with door locks freezing in winter. The cure for this disease is pre-lubrication. In addition, a more sad event may occur - a break in the lock cable. In this case, there is only one panacea - replacing the lock with a new original Nissan (Infiniti). Unfortunately, the problem affects all four locks. After purchasing a new lock, it is recommended to lubricate the cables to avoid problems.
Approximate issue price
Original Nissan door lock (Infiniti): 8000-12.000 RUB PCS.
ENGINE, COOLING AND EXHAUST SYSTEM, FUEL SYSTEM
Catalysts
Period of occurrence
80-150 thousand km depending on the quality of gasoline and operating conditions
Problems, diagnostic methods and solutions
Due to the use of low-quality gasoline, catalysts fail during operation. Failure to pay attention to this problem is fraught with the ingress of ceramic elements of the destroyed catalyst into the engine and, as a result, damage and gradual destruction. One of the signs of a destroyed catalyst is that the car “does not pull”, a knock is heard from the engine side, a rattling sound, speed is floating, “ Check Engine», Errors in the operation of lambda probes (oxygen sensor) drop out.
There are several ways to resuscitate a patient. The first, the most financially intensive, is to supply new catalysts. The second option is more budgetary, to install flame arresters with trompe l'oeil, or low resistance catalysts. You can also realize your old dream and install a tuned exhaust system without catalysts, for example, Stillen, at a price it will be comparable to the price of new original ones.
Approximate issue price
New original Nissan (Infiniti) catalyst: 50,000-110,000 RUB PCS.
Fuel pump
Period of occurrence
The pump fails for about after 100 thousand km. mileage, but the period very much depends on the operating conditions and the quality of the gasoline used.
Problems, diagnostic methods and solutions
Enough frequent problem- failure of the fuel pump. The main reasons: insufficient cooling due to a small amount of fuel in the gas tank, low-quality gasoline clogs the fuel filter at the pump inlet (supplied with the pump), factory defect. When the fuel pump fails, first "dips" appear with active acceleration, then, gradually, the total power decreases at medium and high engine speeds - the car "does not go". At the same time, it starts up and runs normally at idle speed. The problem is being solved by purchasing a new fuel pump.
Approximate issue price
Fuel pump original Nissan (Infiniti): 19.000-25.000 RUB PCS.
Radiator and fan motor
Period of occurrence
The radiator may break down after a year of operation if not properly maintained.
Problems, diagnostic methods and solutions
On early 2004-2005 QX56 JA60 models, there is a problem with the electric fan motor, which can jam, which can lead to engine overheating and even ignition. The problem is solved by replacing the motor with a new one. Also a widespread problem is radiator contamination, which can lead to failure. To see the state of the engine cooling radiator from the outside, the air conditioner condenser interferes, the cells of which are larger - dirt and fluff easily pass them, settling on the honeycomb of the cooling radiator.
In principle, there is less dirt from the inside (from the engine side), moreover, the cooling fan, like a vacuum cleaner, cleans the inner surface. You can only see that the radiator is "clogged" with partial disassembly. A panacea can be periodic (at least once a year) cleaning of the radiator, in addition to cleaning with Karcher (Karcher), as well as installing a special protective mesh.
Approximate issue price
Engine cooling radiator original Nissan (Infiniti): 41.000-48.000 non-original (China): 8000-14.000
Extensions for JoomlaIn this article, you can familiarize yourself with the main weaknesses and problems associated with the operation Nissan cars Armada, Infiniti QX56, Nissan Titan.
Infiniti QX56, Nissan Armada, Nissan Titan engine problems
Failure of the front catalysts, due to low-quality gasoline, entails serious costs for repairing or even replacing the engine. The mixture formation mechanism assumes that all valves - both inlet and outlet - remain open for a short period during the air intake stroke. This phase is necessary for better filling the cylinders with air, due to the exhaust gases, and for afterburning the mixture in order to reduce harmful emissions. The destroyed first catalytic converter turns into ceramic dust, which is prevented from being removed from the exhaust system by the second catalyst standing next to it. Thus, ceramic dust from the catalyst is gradually sucked into the engine cylinders, destroys (grinds) the piston rings, enters the oil system and is carried throughout the engine, which leads to accelerated wear of engine parts. Engine repair is complicated by the impossibility of complete dust removal even by total flushing after disassembly.
Solution :
If errors occur in the lambda probes, immediately replace the catalysts with new ones or install a Stillen exhaust system without catalysts, with lambda probe correctors.
Engine lubrication system problems
Regular problems with the lubrication system of the VK56DE engine not noticed, except in rare cases of incorrect operation of the oil pressure regulator valve. The engine noticeably "eats" oil only at high loads, which is due to its technical features.
Engine cooling system problems
Early models from 2004-2005 may have a poor quality electric air conditioner cooling fan. The motor can jam, resulting in engine overheating or fire.
Failure of the engine cooling radiator due to contamination.
To see the state of the engine cooling radiator from the outside, the air conditioner condenser interferes, the cells of which are larger - dirt and fluff easily pass them, settling on the honeycomb of the cooling radiator.
In principle, there is less dirt from the inside (from the engine side), besides, the cooling fan, like a vacuum cleaner, cleans the inner surface. You can only see that the radiator is "clogged" with partial disassembly.
Solution
It is necessary to wash the radiator at least once a year using special equipment. You cannot wash the radiator using systems such as Karcher.
Engine management problems
Failure of contacts and electrical wiring due to interaction with deicing reagents.
Solution
Repair of engine wiring when errors are detected by the computer.
Fuel system problems
A frequent occurrence is the failure of the fuel pump. Presumable reasons: insufficient cooling due to a small amount of fuel in the gas tank, low-quality gasoline clogs the fuel filter at the pump inlet (supplied with the pump), factory defect. When the fuel pump fails, first "dips" appear with active acceleration, then, gradually, the total power decreases at medium and high engine speeds - the car "does not go". At the same time, it starts up and runs normally at idle speed.
Solution
Replacing the fuel pump.
Automatic transmission problems
Failure of low-quality or old automatic transmission cooling hoses leads to liquid squeezing out and automatic transmission breakdown.
Solution
Timely diagnostics.
Transfer case problems
There are no typical problems.
Cardan transmission
The crosses of the front, sometimes rear propeller shafts fail during active city driving, about once every two years. There are characteristic "clatter" clicks when switching the automatic transmission selector from "R" to "D".
Front and rear drive problems (reducers, CV joints)
Semi-axle falling out and destruction of the front axle gearbox, probably as a result of driving in 4H mode on asphalt or during sudden starts with inverted wheels.
Solution
Gearbox repair or replacement.
Typical malfunctions and deficiencies of the suspension
Failure (rapid wear) of the rubber bushings of the front stabilizer is associated with a large vehicle mass and a high center of gravity. Fortunately, the bushings are inexpensive.
An unpleasant feature of the car can also be attributed to the lack of balance of the suspension, as a result of which the car is prone to axle drift in corners when hitting bumps. Infiniti Parts' heavy-duty anti-roll bar helps tame the nasty character. The car will not become stiffer as a whole, but it will please with noticeably better stability when cornering. There will be no need for active "steering" when one wheel hits potholes at medium and high speeds.
In general, the suspension and chassis are very reliable.
Brake problems
Early 2004-2007 models had extremely poor front brakes. Later 2008-equipped with enlarged brakes, which, however, are not enough for the full use of the power reserve of a three-hundred-horsepower engine. Brake discs overheat and deform due to insufficient diameter. There is a beating of the steering wheel when braking.
Solution
Replacing with reinforced perforated brake discs with metal-ceramic brake pads partly helps to solve the problem, however, active owners of Infiniti Parts recommends the installation of multi-piston sports braking systems, such as AP-Racing, StopTech with an increased diameter of brake discs.
Steering problems
In general, there are no complaints about the steering, with the exception of low-quality power steering hoses. Perhaps the malfunction is associated with the owner's steering wheel "on the spot" (without moving the car), which is not recommended on any cars.
Solution
Regular diagnostics and replacement of power steering hoses as needed. When turning the wheels, try to keep the car moving.
Body control system problems (locks, glass, sunroof, instruments)
Failure of wiring and tailgate locks due to interaction with deicing agents.
Doors lock cables freeze in frost - doors do not open.
On the dashboard, individual elements and devices fail.
Solution
Repairs as malfunctions occur.
Air conditioning / heating problems
Unpleasant surprises include the rear air conditioner tubes, which are destroyed by interaction with deicing reagents.
Solution
Replacement of aluminum tubes with special hoses.
28.02.2018
The Infiniti QX56 is Infiniti's full-size luxury SUV designed specifically for the American market. The Infiniti brand appeared on the global market not so long ago, but this did not stop the luxury division of Nissan from creating the largest a car of all officially supplied to us. Usually, Infiniti cars have a feminine and sophisticated appearance, which cannot be said about the QX series - a large, brutal car that terrifies drivers moving in the same stream with it. Despite the premium status of this model, it quickly depreciates by secondary market, but why this is happening and whether it is connected with the reliability of this "giant", now let's try to figure it out.
A bit of history:
The QX series first debuted on the market in 1996. In fact, it was the same Nissan Pathfinder of the second generation, but only with a slightly changed appearance and richer equipment. This model was a real SUV with an impressive ground clearance, crawler gear and differential locks. Infiniti QX56 was presented in 2004, unlike its predecessor, for development this car the body of the more expensive and high-quality Nissan Armada was taken as a basis. Despite this, the novelty was built on the same platform with the Nissan Titan pickup truck - F-Alpha. Generally appearance the car turned out to be more aggressive than the original. This result was achieved thanks to the impressive size hood and chrome grille. The car was assembled only at the American Nissan plant in Mississippi. The main sales markets are the USA, Canada and some countries of the Middle East.
In the CIS, the official sales of this model started not so long ago, in 2007, before that cars were brought to us by so-called gray dealers. The premiere of the next generation of the Infiniti QX56 SUV took place in March 2010. Unlike the previous generation, the platform was borrowed from the 2011 Nissan Patrol Y62 to develop the new product, and the assembly was moved from the United States to Japan. Despite modern trends, the Japanese decided to keep the frame structure of the body, impressive dimensions and high quality finishing materials. In 2012, SKD was set up at the Nissan plant in St. Petersburg, and in 2013 the model was renamed Infiniti QX80 due to a change in the brand's index system.
Weaknesses and disadvantages of Infiniti QX56 with mileage
Paintwork on cars made in Japan has never been renowned for its benchmark quality and QX is no exception. In addition, they do not contribute to the long service of the paintwork and certain miscalculations when creating the front of the car, because of which the body begins to sandblast over time. Despite this, the body staunchly resists the onslaught of the redhead disease, due to which even the cars of the first years of production often do not even have a hint of rust. Concerning problem areas body, then there are few of them.
The most common ailment is fogging of the front optics, fortunately, the problem can be solved - additional sealing of the seams of the headlight unit is required. Another disadvantage is the frequent failure of the button responsible for opening the trunk window. The reason is that the wiring becomes unusable. It is also worth noting the tendency to acidification of the spare wheel lowering mechanism. To avoid trouble at the most inopportune moment, it is necessary to periodically lower the spare wheel and lubricate the mechanism. With the arrival of frost, door handles may stop working due to freezing cables.
Power units
On the Infiniti QX56, only a 5.6-liter V8 petrol engine with a capacity of 320 hp and a torque of 529 Nm was installed. This motor is very reliable, but demanding on quality. lubricants... If anything is poured into it, then serious problems with its performance and costly repair of the unit will not take long. The biggest drawback of this motor is considered to be unreliable timing chains (thin), which tend to stretch. Some servicemen say that a chain from. Manufacturers are well aware of this problem, so they released reinforced chains that run for a relatively long time - 150-180 thousand km.
It is also worth noting the maslozhor power unit, which may additionally require up to 1 liter of oil per 1000 km of run. Increased consumption oil for this model is a platform for disputes and discussions, since in some the engine eats oil only at high speeds and dynamic movement, in others it is the other way around. In any case, this is not the norm and serves as a reason for diagnostics (first of all, you need to measure the compression in 7-8 cylinders - it should be at least 13.5 kg, the standard value is 15.5 kg).
Also, catalysts, which are quickly destroyed when using low-quality fuel, can be attributed to weak points. The main symptoms indicating the need to urgently replace the catalysts are: loss of traction, precarious work engine, errors on the lambda probes appear. This ailment is aggravated by the fact that when the catalyst is destroyed, its particles (ceramic dust) enter the cylinders, the lubrication system and damage them. If this happens, you will only have to buy new engine, since no amount of washing will completely remove such dust. To permanently solve the problem, it is necessary to replace the catalysts with flame arresters.
You can also note the unreliability of the injection pump, which requires replacement every 80-100 thousand km. Servicemen call the reason for the small resource of the pump insufficient cooling, due to the small amount of fuel in the gas tank and the use of low-quality gasoline, which clogs the fuel filter at the inlet to the pump. Symptoms - dips appear during sharp acceleration, which eventually develops into a decrease in power throughout the entire range of engine operation.
It is also worth noting the tendency of the motor to overheat, so it is necessary to monitor the condition of the cooling system and periodically clean the radiator under high pressure. It is not recommended to use systems of the Karcher type for cleaning the radiator, as they are not effective. The wiring under the hood is susceptible to chemicals, which causes its contacts to oxidize over time, which leads to malfunctions in the engine management system. In cars of the first years of production, the air conditioner radiator fan is installed directly behind the radiator grill and is exposed to all winds, because of this, it can jam over time. This nuisance can cause burnout of the wiring harness. To minimize the risks of various malfunctions of the unit, use only high-quality gasoline, original oil and do not delay servicing the car.
Transmission
Paired with a motor, only a 5-speed automatic transmission gear. This unit is reliable, but the hoses of its cooling system often lose their tightness (they flow at the joints of rubber with metal). It is not worth tightening with the replacement of hoses, as this can cause an early failure of the box. There are also complaints about the incorrect operation of the switch for selecting the transfer modes ("buggy" due to the failure of the electronic servo). The transmission is afraid of overheating, therefore, it is recommended to install an additional cooling radiator on cars that are often operated in off-road mode or in regions with a warm climate.
Most of the Infiniti QX56 on our market are equipped with all-wheel drive, however, there are also mono-drive versions brought from the USA. In system all-wheel drive the weak point is the crosses of the front and rear propeller shafts, fail with active city driving - about once every two years. Symptoms - clicks (clatter) appear when switching the automatic transmission selector from "R" to "D". V front axle breakdowns and more serious are possible: destruction of the gearbox, twisting of the axle shaft (CV joint), as a rule, right and falling out of the left. Experts say that such troubles are often caused by abrupt starts in 4H and Auto modes with inverted wheels. The cardan joints are impressively thick, and they are also made with interchangeable crosspieces, but the front crosspieces are supplied only complete with a shaft.
Chassis, steering and brakes Infiniti QX56 with mileage
Despite the fact that the Infiniti QX56's suspension is completely independent, it is difficult to call the car very comfortable - the suspension does not always smoothly work out even small irregularities. But the handling here is at a high level, which is good news, especially considering the weight (almost 2.5 tons) and the size of the car. As for the reliability of the suspension, there are no serious complaints about it. Due to the high center of gravity, it is often necessary to change the rubber bands of the front stabilizer (every 20-30 thousand km), fortunately, they are inexpensive (about $ 5 for the original). Once 100-120 thousand km, replacement of the front shock absorbers is required (about 150 USD), and closer to 150,000 km - the rear ones. At the same mileage, wheel bearings also fail (they change assembled with the hub). If wheels of 20 diameter are installed on the car, the resource of the wheel bearings will be significantly less.
As standard, air bellows are installed on the rear axle, which prevent the shock absorbers from sagging under heavy load. Weak point in "pneuma" is a compressor, which suffers from moisture and reagents (oxidizes and wedge). The cost of a new compressor is unreasonably high (about $ 400), therefore, many owners change it to a cheaper analog. The steering system is reliable, the only thing that needs special attention here is the power steering hoses - it happens that they leak. The brakes also cannot be called problematic, however, on cars of the first years of production, they were rather unsuccessful - they quickly overheated and warped. After restyling in 2008, the manufacturer eliminated this problem by installing reinforced brakes, but they are not always enough to stop such a large car with confidence.
Salon
The Infiniti QX56 salon is striking in its size, but this is the beauty of such cars. As for the quality of finishing materials and sound insulation, they are at a high level. Of the shortcomings here, one can note the weak lateral support of the seats, because of this, while driving on an uneven road, you have to constantly hold on, and this quickly gets tired. Electrical equipment also rarely bothers, here one can only note the poor quality of the dashboard, besides, it constantly requires repair - the instrument illumination pads go out. Some owners blame the appearance of "glitches" in the multimedia system control unit. In both cases, re-soldering the board tracks is required to fix the problems. After 100,000 km of run, the heater motor starts to mope - a grinding (knock) appears after switching modes. Elimination of this trouble will cost 60-100 USD.
Outcome:
Despite its middle age, Infiniti QX56 is still quite an interesting option to buy, which will pleasantly surprise you with its quality and comfort. Most of the problems inherent in this model are associated with poor quality or untimely service. If you think that this is not a killable car that does not require special attention, the consequences can be dire.
If you are the owner of this car model, please describe the problems that you had to face during the operation of the car. Perhaps it is your feedback that will help the readers of our site when choosing a car.
Best regards, editors AutoAvenu
