Operating temperatures of the CVT X-Tronic gearbox
The oil in the variator is designed for a certain temperature range at which it retains its properties and reduces friction between transmission parts and reduces their wear. The operating oil temperature in the CVT X-Tronic is +60-70 degrees Celsius.
When operating under high load conditions or the cooling system is not operating correctly, the oil can heat up to a temperature of +80 °C or higher. When using a gearbox under such conditions, its service life is significantly reduced and the process of producing spare parts is accelerated. With critical overheating of up to 120 degrees or more, the transmission may fail altogether.
At what temperature should the automatic transmission operate?
An automatic transmission contains ATF, which acts as a torque-transmitting link between the engine and the wheels. During automatic transmission operation, the transmission fluid heats up, which can heat up other elements of the gearbox. This can lead to resulting overheating if used incorrectly.
It is believed that the optimal ATF temperature for automatic transmission operation is between 65 and 100 degrees Celsius. If the temperature of the liquid in the box exceeds, there is a high risk of damage to its components.
Please note: A radiator is used specifically to cool ATF fluid in modern cars, through which the fluid flows and is cooled.
- The degree of heating of the “classic” box is related to the quality of the ATF working fluid - the transmission oil in the machine.
- Unlike the motor one, it performs more functions:
- Lubricates the assembly.
- Cools friction areas.
- Protects the structure from corrosion.
- Creates working pressure to compress the clutches, which change gears.
- Transmits torque from the engine to the wheels through a torque converter, i.e. works with the clutch in the automatic transmission.
Under high engine operating loads, ATF heats up to 150℃ and wears out quickly. To prevent overheating, automatic transmission oil passes through a cooling circuit, which lowers its operating temperature to the norm of 75-95℃.
The operating temperature of the automatic transmission oil can be monitored on the car’s dashboard or using the Torque Pro program and the ELM327 adapter. The scanner is connected to the diagnostic connector of the on-board computer and receives data in the application via Bluetooth, Wi-Fi or USB, depending on the model.
Read more: Hyundai Accent Getz or Solaris does not start Starter does not turn causes and solution to the problem
How to and how not to slip an automatic transmission
Causes of overheating
The main problems leading to an increase in operating temperature are driving style and the quality of car care.
Automatic transmission overheating above 95℃ is observed when:
- pushing in traffic jams;
- driving in hot climates;
- slipping at high speeds;
- towing a trailer or car;
- going uphill.
If the operating temperature of the automatic transmission increases when driving without load, then the reasons may be the following:
- the main cooling radiator is dirty;
- automatic transmission radiator clogged;
- the oil level is below or above normal;
- It hasn't been changed for a long time or the wrong fluid has been added.
Radiator problems
The cooling capacity of the radiator in hot weather and in traffic jams is reduced because the air flow for blowing is too weak. In addition, the heat exchanger honeycombs are constantly clogged with debris arriving from outside: fluff, insects, dust. As a result, the radiator does not fully dissipate the vehicle's heat, and the operating temperature rises.
The automatic transmission cooling circuit is built into the engine radiator. Taking into account the fact that antifreeze in the main heat exchanger can heat up to 100℃, the radiator of the machine will not be able to cool the ATF to the required operating temperature.
Increased loads
Automatic gear shifting during prolonged slipping leads to high system overloads: in pursuit of transmitting high torque, the operating temperature of the oil in the torque converter quickly increases.
Oil quantity
If there is a lack of ATF, the pump picks up air. The resulting oil-air emulsion has a low heat capacity, is easily compressed, and the quality of the lubricant decreases. Due to high friction, the operating temperature of the automatic transmission begins to rise.
If there is excess liquid, then at high speeds it foams, increases in volume and splashes out. As a result, the oil level decreases and the situation described above occurs.
ATF quality
Manufacturers regulate partial or hardware replacement of automatic transmission fluid every 60,000 km. Taking into account the change of seasons, the quality of roads and driving style, the frequency of oil changes should be reduced to 30-40,000 km.
Do-it-yourself complete and partial oil change in automatic transmission Suzuki SX4
What will happen if you ignore the recommendations: after 100,000 km, the oil will become saturated with slag and metal shavings, lose its properties, and the unit will stop working normally.
Symptoms of overheating
If the operating temperature of the automatic transmission is exceeded, the overheating or fluid level pressure drop light on the on-board computer panel will indicate. If the oil indicator color does not light red, then the condition of the automatic transmission may indicate its behavior. To better understand the relationship between symptoms and the causes of their occurrence, the information is summarized in a table.
| Problem | Cause |
| Shocks when changing gear | Heated oil, contaminated with wear products, clogs the solenoids and thin channels of the valve body, which leads to a drop in pressure. The friction discs stop compressing and slip against each other, which leads to rough operation of the box. |
| Gear shifts are delayed | |
| Upshift is reset to downshift | |
| Burnt oil smell | ATF started to burn. |
Providing first aid when signs of an increase in operating temperature appear will help maintain the functionality of the unit.
In this case, you need to reduce the speed and wait until the automatic transmission has cooled to normal operating temperature and the light goes out.
It is recommended to clean the outside of heat exchangers at least once a year. Dirt is washed off with jets of water under pressure or a mini-wash, the main thing is not to damage the honeycombs with high pressure. For greater effectiveness, use car shampoos.
The oil level and quality are checked with the engine running and the selector in position “P”, having previously driven 10-20 km. The top marks on the dipstick labeled “Hot” indicate the correct ATF level.
Automatic transmission oil differs from other fluids in red or light yellow color. When checking with a dipstick, the red color indicates the good condition of the oil. Increasing shade to dark indicates levels of dirt and wear. Black - signals aging and unfitness.
You can change the oil completely using the device or partially even in maintenance-free boxes. For a partial replacement, remove and wash the pan, drain up to 50% of the liquid, change the oil filter, install the pan and fill in fresh oil in the amount drained. The procedure is repeated 2-3 times.
If the ATF has recently been changed to a different brand, it is possible that it is not suitable in viscosity and does not cope with the operating temperatures of the transmission. You can view the manufacturer's recommendations for choosing a composition on the automatic transmission dipstick, on the table under the hood and in the instructions.
If none of the options help, and the operating temperature does not drop to normal 75-95℃, you need to diagnose the car.
CVT cooling methods
The oil in the box is cooled by a heat exchanger, but in some models a radiator is additionally installed. It is usually located in the front part of the engine compartment and is cooled by air flows that enter through special openings in the bumper.
Owners of gearbox models with a radiator should be aware that it is not located in the best place, so it quickly becomes dirty and ceases to perform its function. The radiator must be cleaned at least twice a year, otherwise overheating of the transmission, especially at high speeds, is guaranteed.
If you decide to tune your car, you should be aware that bumper covers, underbody protection and other elements can make it difficult to remove heat from the transmission. Before installing decorative elements, it is better to consult with a specialist; this will save you from sudden overhaul of the transmission.
Summary
Modern automatic transmissions are necessarily equipped with such a useful device as an automatic transmission oil temperature sensor. Thanks to this, the risk of causing the transmission to fail is greatly reduced, and the service life of all functional elements increases significantly.
The car's automatic transmission is controlled by an electro-hydraulic system. The process of shifting gears in an automatic transmission occurs due to the pressure of the working fluid, and the control of operating modes and adjustment of the flow of working fluid using valves is carried out by an electronic control unit. During operation, the latter receives the necessary information from sensors that read the driver’s commands, the current speed of the vehicle, the workload on the engine, as well as the temperature and pressure of the working fluid.
Reasons for overheating of the CVT X-Tronic variator
There are many rubbing parts inside the box, so heat is generated during movement. The more intense the load on the transmission, the more heat is generated. The cooling system does not always cope with normalizing the temperature, so overheating occurs. Main reasons:
- insufficient amount of transmission fluid;
- oil that does not meet the manufacturer’s requirements;
- untimely oil change;
- severe contamination of the transmission cooling radiator;
- long-term movement at a speed of more than 130-150 km/h;
- installation of additional structural elements that interfere with the flow of air to the radiator and heat exchanger;
- malfunction of the torque converter or gearbox;
- loss of transmission fluid properties due to short-term heating to critical temperatures;
- decrease in oil pressure;
- long-term slip;
- aggressive driving style.
Whatever the reason for the oil overheating in the variator, you need to look for it and fix the problem. Operating the transmission at too high temperatures will result in costly overhauls.
Why does the automatic transmission get very hot?
As a rule, if the automatic transmission is in good condition and operates in optimal modes, it facilitates the process of driving a vehicle.
Moreover, even on new cars with an automatic transmission, the owner may encounter the following: Also, the transmission oil in the machine may darken too quickly, etc.
Quite often the cause of such failures is overheating of the automatic transmission. Next, we will look at how to understand that the automatic transmission is overheating, the reasons why the automatic transmission overheats, and also what needs to be done in this case.
Read in this article
So, let us immediately note that a significant increase in the temperature of the transmission oil in an automatic transmission usually manifests itself in the form of certain malfunctions in the operation of the automatic transmission.
Ignoring such symptoms can lead to a reduction in the life of the unit itself or breakdowns. In other words, the automatic transmission in this case often fails, after which an expensive overhaul or repair is required.
- Let's move on. The reasons for overheating of the automatic transmission may be different. First of all, the unit itself contains a large number of loaded elements that interact with each other. As a result, a large amount of heat is generated, which is removed using ATF.
It becomes clear that problems in the automatic transmission or gas turbine engine, deviation from the norm in the oil level in the automatic transmission, a decrease in ATF pressure, as well as loss of properties of the transmission fluid itself lead to an increase in the temperature of the automatic transmission. In some cases, the oil in the automatic transmission heats up to 120 degrees or more.
Such heating is critical, the oil loses its properties, the unit malfunctions, and gearbox wear increases significantly. The consequences of automatic transmission overheating manifest themselves in the form of breakdown, as well as a number of other gearbox elements.
In practice, after a couple of tens of minutes, operating the automatic transmission in maximum heating mode will be enough for the unit to fail. For this reason, it is important to promptly identify symptoms of automatic transmission overheating. In cases where the automatic transmission overheats, signs of excessive heating can be determined independently. If the automatic transmission is very overheated, the transmission can put the unit into .
The check or A/T light on the dashboard indicates problems with the automatic transmission. Various automatic transmission sensors record an increase in temperature, a decrease in ATF pressure, etc. In such a situation, it is not uncommon for the torque converter to literally turn blue from strong heat, the automatic transmission wiring melts, and the clutches burn and crumble.
In this case, when the automatic transmission goes into emergency mode, it is optimal to immediately stop using the car and take it to the service center under your own power, so as not to further worsen the situation. Moreover, if you plan to tow without hanging the drive wheels, then you need to separately take into account all the rules and nuances of such towing a car with an automatic transmission.
- Please note that the machine will not always “fall” into an accident if it overheats. Often the box works, the check is not lit, but the temperature is approaching a critical level. In such a situation, after the automatic transmission reaches operating temperature, the driver usually feels obvious jerks, jolts during shifts, the automatic transmission slips, delays gear shifting, etc. At the same time, the box works fine when cold.
You need to understand that problems cannot be avoided in the future, since constant overheating, even if not critical, significantly reduces the life of clutches and solenoids, and can cause deformations, etc. Under conditions of increased heating, the transmission oil itself also quickly loses its properties and becomes heavily contaminated. This means that the owner must constantly check the level and quality of the oil in the automatic transmission.
It is also important to note any changes in the operation of the unit and immediately carry out diagnostics, promptly change the automatic transmission oil and filter in the automatic transmission, and use high-quality fluids recommended by the transmission manufacturer itself.
If we talk about the reasons why an automatic transmission overheats, the main ones include the following:
- Significant loads on the transmission and severe operating conditions (towing a trailer, frequent and prolonged slipping in mud, snow, etc.)
- Insufficient standard automatic transmission cooling or problems with the automatic transmission cooling radiator;
- Reduced oil pressure in the automatic transmission (contamination of channels, filters, breakdown of the automatic transmission oil pump);
- Low/high, control system malfunctions, problems with solenoids;
At the same time, a frequent and widespread problem is problems associated with the automatic transmission oil cooler (automatic transmission heat exchanger). The fact is that if the radiator is contaminated with deposits and products of natural wear of the automatic transmission, the hot oil ceases to cool effectively in the radiator.
Failures are also possible in the operation of other elements. For example, automatic transmission solenoids are valves that allow ATF to be directed through channels. If the solenoid does not operate in a timely manner, this leads to disruptions in the supply of working fluid, which lubricates and cools the parts.
First of all, if the box overheats, you need to start with diagnosing the automatic transmission. An integrated approach usually allows you to quickly determine the cause and find out why the automatic transmission is heating up.
Often, to eliminate overheating of the machine, you need to clean the valve body channels, change the transmission fluid and filters, and flush the automatic transmission oil cooler. For cleaning, you can use different methods, ranging from using flushes to disassembling the unit.
Another effective way to solve overheating problems is to install an additional automatic transmission cooling radiator with a thermostat. Such a radiator allows you to quickly reach operating temperature and continue to maintain the heating of the oil in the machine no higher than 70-90 degrees.
- Taking into account the fact that many modern automatic transmissions can normally heat up to 100-110 degrees, experienced car owners install an automatic transmission add-on radiator not in case of urgent need, but for the purpose of prevention and increasing the service life of the gearbox.
- Why the automatic transmission kicks, the automatic transmission jerks when changing gears, jerks, jerks and impacts occur in the automatic transmission: the main reasons.
It is a rather complex technical unit. It includes several hundred components that interact with each other and ensure smooth and comfortable acceleration of the car in various driving modes. One such element is a temperature sensor. Read about why it is needed and how it works in this article.
The automatic transmission is designed in such a way that almost all manipulations in it occur with the help of oil injected under pressure. The pressure is pumped up by a special oil pump, which in its structure and design resembles an engine cooling pump and works in a similar way.
The oil circulates at incredible speed. To at least roughly imagine what this speed is, you need to open a water tap and in your imagination increase the pressure and pressure of this water several tens of times.
An inexperienced motorist, and indeed a person who does not repair automatic transmissions on his own, will have a logical question: why is such high pressure needed, and why is it so useful when operating an automatic transmission?
This oil flows through a system of automatically shutting channels called solenoids.
Depending on the path for oil provided by the solenoid, the clutches move under pressure in such a way that they eventually form packages that connect the engine and wheels in a certain way.
When an automatic transmission is operating, the oil inevitably heats up: this is caused simultaneously by high pressure in the oil channels and strong friction achieved when connecting the clutches and their synchronous movement.
The temperature sensor allows the automatic transmission control unit to receive data about the state of the technical fluid in the crankcase and how efficient the entire functional unit is.
Read more: How to replace the front or rear crankshaft oil seal if it is leaking
How it works?
Generally speaking, the meaning of the role played by the automatic transmission temperature sensor is quite transparent.
If for some reason the liquid temperature exceeds the programmed threshold, the control unit makes a chain of decisions.
These solutions are aimed at informing the driver that a problem has arisen and developing actions to restore the functionality of the automatic transmission and its rehabilitation.
For example, on most cars the dashboard is equipped with an automatic transmission overheating indicator. As soon as the sensor is triggered and gives a signal to the control unit, it displays information on the instrument panel, and the driver already understands that something has gone wrong.
On the most modern transmission models, a special algorithm has been implemented, which in emergency cases allows you to bring the transmission back to normal. For example, gears begin to shift more smoothly, and the maximum speed of the car decreases. On top of that, the engine operating mode becomes such that the transmission is not subjected to excessive loads.
For many, it remains unclear where such a sensor is located and what it looks like. In appearance, such a device is a small metal cylinder.
The device is located in the transmission crankcase - the largest amount of oil is located there, and controlling its temperature in this way is much easier and more rational.
Summary
Modern automatic transmissions are necessarily equipped with such a useful device as an automatic transmission oil temperature sensor. Thanks to this, the risk of causing the transmission to fail is greatly reduced, and the service life of all functional elements increases significantly.
An automatic transmission has greatly simplified the process of driving a car. The standard automatic transmission is quite easy to operate and unpretentious to use. With proper care, it can work for quite a long time without complaints.
- The smell of burnt oil in or around the car;
- Kicks when changing gear;
- The switching itself occurs only at high speeds;
- The overheating sensor on the panel is on;
- Or all at once.
Signs of overheating of the CVT X-Tronic variator
In most cases, when overheating occurs, the indicator light on the dashboard will light up. In this case, it is not recommended to continue driving, as this can lead to serious consequences. If the gearbox goes into emergency mode, then it is better to take the car to a service station on a tow truck or tow it with the drive wheels hanging out. This saves the transmission from critical damage.
It should be noted that the variator does not always go into emergency mode when it overheats. How to find out about overheating in this case? If you notice that while driving the transmission starts to work slowly, with jerks, slips, jerks appear, and when cold these problems disappear, then overheating is occurring.
If the transmission begins to work incorrectly, there are jerks, kicks, gears are switched incorrectly, you need to urgently contact a specialist for diagnostics. One of the reasons for such changes may be constant overheating to temperatures close to critical.
If, when changing the oil, it is discovered that it has a dark tint and a characteristic odor, this indicates that the variator has overheated. In this case, you need to look for the cause of the temperature violation and eliminate it.
Auxiliary automatic transmission control sensors
In addition to the main sensors related directly to the gearbox, its electronic control unit can also use information obtained from additional sources. Typically these are the following sensors:
- Brake pedal sensor - its signal is used when the selector is locked in the “P” position.
- Gas pedal position sensor - installed in the electronic accelerator pedal. It is necessary to determine the current driving mode request from the driver.
- Throttle position sensor - located in the throttle body. The signal from this sensor shows the current operating load of the engine and influences the choice of the optimal gear.
The combination of automatic transmission sensors ensures its proper operation and comfort during vehicle operation. If sensor malfunctions occur, the balance of the system is disturbed, about which the driver will be immediately warned by the on-board diagnostic system (i.e., the corresponding “error” will light up on the instrument cluster). Ignoring malfunction signals can lead to serious problems in the main components of the car, therefore, if malfunctions are detected, it is recommended to immediately contact a specialized service.
As a rule, if the automatic transmission is in good condition and operates in optimal modes, it facilitates the process of driving a vehicle.
Moreover, even on new cars with an automatic transmission, the owner may encounter the following: Also, the transmission oil in the machine may darken too quickly, etc.
Quite often the cause of such failures is overheating of the automatic transmission. Next, we will look at how to understand that the automatic transmission is overheating, the reasons why the automatic transmission overheats, and also what needs to be done in this case.
Read in this article
How not to overheat the variator: operating features
You should know that the CVT is not designed for extreme driving styles or off-road driving. He doesn’t like slipping or sudden changes in tempo. Also, this box is contraindicated for prolonged movement at high speeds and overloads. If you decide to tow someone's car, it is better to abandon this idea; it is difficult for the variator to cope with such a load.
Keep the radiator clean. It is located in a bad place, near the front wheel, so it quickly becomes clogged with dirt. If you do not clean it in a timely manner, the transmission will definitely overheat.
The radiator and heat exchanger are cooled by air flows. If you decide to change the body kit or protection, make sure that these elements will not impede air circulation. Most body kit elements do not have holes for cooling the engine compartment.
In winter weather, the car needs to be warmed up before driving. Driving on a cold transmission leads to overloads and premature failure.
If the oil in the box once heats up to critical temperatures, it loses its properties, and overheating will be chronic. To prevent this from happening, the transmission fluid must be replaced.
If the operating rules are followed, the CVTX-Tronic runs for at least 150-200 thousand km. An attentive car owner will drive his Nissan, Mitsubishi Outlander, Lancer, Renault Koleos or any other car with a CVT for a long time and with pleasure.
What to do if the CVT X-Tronic variator overheats
Overheating of the oil in the variator is indicated by a warning symbol on the instrument panel “!”. If it lights up, do not ignore it and continue driving. You need to smoothly slow down, stop the car, move the gearbox handle to the “P” and, without turning off the engine, open the hood. The car turns on the oil cooling system, and very quickly its temperature will return to normal. If the warning symbol goes out, you can continue driving.
Overheating of the variator can periodically occur under heavy loads; if this phenomenon occurs frequently, or even when the car is stopped, the warning sign does not go out, you should urgently contact a car service center.
What happens inside the gearbox when it overheats?
For serious problems to occur, 15-20 minutes of gearbox operation at critically high temperatures is sufficient. Even if you don't have far to drive, you shouldn't risk the transmission. But more short-term overheating is also dangerous.
When the critical temperature is reached, the oil loses its properties. This means that friction between parts increases, causing premature wear. If you did not notice that the box overheated, or after such an episode you did not contact service, get ready for a major overhaul.
When overheated, the solenoids and friction discs are the first to fail. When using a transmission that overheats for a long time, the geometry of parts, for example, the hydraulic plate of the control unit, is often disrupted. Eliminating such problems will be very expensive, including major repairs or replacement of the box.
Overheating of the automatic transmission. Causes and symptoms. A few words about the consequences
The most popular automatic transmission is a conventional automatic transmission, abbreviated as automatic transmission. These are quite reliable units (especially the old 4-speed versions). But they have several weak points, and if you do not follow the operating rules, then you can very quickly “ruin” this transmission, and the cost of a new one or repairing this one is simply HUGE money! One of the destructive reasons is overheating. This is exactly what I want to talk about today in more detail. As usual there will be a text version + video. So let's read and watch...
THE CONTENT OF THE ARTICLE
Overheating can very quickly damage your automatic transmission, and overheating may not even be noticeable and at low speeds in the city (for example, driving in gentle modes), you won’t even notice it, and when the automatic transmission starts to kick, it will be too late. Today we will talk about the causes and symptoms, and the consequences too.
Normal automatic transmission temperature
The machine heats up from the transmission oil (it is special, called ATF fluid). This fluid is a transmission link - in simple words, it transmits torque from the engine to the wheels. All this happens in a torque converter, when one turbine (turbine wheel), conventionally tied to the engine, transfers the oil pressure to another turbine, which is tied to the transmission.
As you understand, it is the oil that heats up, and not the automatic transmission itself, and this heat heats up everything else.
In order to level out excess heating of the liquid in the machine, it is passed through a cooling radiator, which is precisely why destructive heating does not occur.
It is worth noting that the normal temperature of the oil inside an automatic transmission is between 65 and 95 degrees Celsius. If the temperature exceeds 100, and even more so 110 degrees, then you already need to think and watch. Otherwise, breakdowns are nearby
Now let's think about what could be the reasons why the machine overheats.
Causes of overheating
The reasons are often trivial and anyone can encounter them:
- The cooling radiator is clogged. Usually it is separate, located next to the main engine cooling radiator. Over time, it can become clogged with lint, dirt, insects, etc. IMPORTANT! Clean it every year (at least wash it with not very strong streams of water)
- The oil hasn't been changed for a long time. Let's say we rode 150 - 200,000 km and never got into an automatic transmission. A VERY large amount of dirt accumulates, and it can also clog the cooling radiator from the inside. ATF fluid will not circulate, so you have overheating
- Towing a car or trailer. A large traction mass can also lead to overheating and greater wear.
- Slipping. Stuck in mud, sand or snow. If you are slipping in one place, the speed is high, the automatic transmission is thoroughly warming up. Many cars even have an overheating protection system, it turns off the machine after critical heating, and you have an indicator on the dashboard
There is another reason, but this is what I call planned aging. The point here is this - on some cars the automatic transmission radiator and the main radiator for the engine are combined. BUT often now motors can be high temperature, which
As long as you don't haul trailers behind you or skid in the mud. Then it is important for you to flush the radiator and change the oil inside on time
Consequences of overheating
Are the consequences most dire for an automatic transmission? Let's go through the points again:
- Oil (or ATF fluid). Its operating temperature (the best one) is up to approximately 130 degrees Celsius. If the heating goes higher, then it simply loses its properties and may even burn. And from such burning, sediment may form, clogging many working parts - solenoids, valve body, etc. At a minimum, the performance of your box will be impaired
- Friction discs (or clutches). I already wrote about them here, they are both hard (usually metal) and soft (can be pressed cardboard and other impregnated types of special paper). So, “soft” clutches can simply collapse from excessively high temperatures.
- Solenoids. In simple terms, these are specialized valves that open the flow of oil to a package of one or another package of friction discs, closing or opening them. So now solenoids can be 50% plastic, and high temperatures can simply destroy them
- Wiring. Often, special control wires can go to the solenoids, but from high temperatures, they can also melt and collapse.
These are the consequences that can result from overheating of the machine, so it needs to be controlled
Symptoms of overheating
At the very beginning, I advise all owners of cars with an automatic transmission or a CVT to buy the so-called ELM327 (I wrote about it in detail, follow the link). You can install the TORQUE program on your phone, install ELM327 in the OBD2 connector and read the readings of many parameters, including the temperature of the automatic transmission. Next, find out your extreme heating characteristics (sometimes in repair manuals) and look at the readings through “ELMKU”. If everything is fine, then OK. If it is exceeded, we look for reasons
Symptoms may be:
- Shocks when switching
- Burnt oil smell
- Gear shifts poorly
- Shifting occurs at high speeds
- The overheat indicator constantly lights up, especially after several sudden starts
- In the most severe cases, gears may not engage at all.
As you can see, nothing fun.
Now there's an interesting video, let's watch it
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How often does overheating occur?
Older CVT models do not have a cooling radiator and have an imperfect lubrication system. That is why such gearboxes often overheated. The manufacturer is improving the units, taking into account the problems of previous models, so the new generation of CVT X-Tronic overheats much less often than its predecessors. The opinion that this type of transmission is unreliable was formed by owners of cars with first-generation gearboxes; modern CVTs are free of those shortcomings and, if operating rules are followed, last a long time.
Box overheat warning
Heat exchanger for Nissan X-Trail
CVT cooling radiator for Mitsubishi Lancer X
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