The ventilation and air conditioning system in a modern car plays the role of lungs, providing not only a comfortable temperature, but also clean air inside the cabin. For crossover owners Nissan Murano second generation (body Z51) the issue of filtration quality is especially acute, given that this car is often used in conditions of urban dust or country roads. Ignoring the maintenance timing of this element leads to a decrease in operating efficiency climate control and the appearance of unpleasant odors.
Many car owners mistakenly believe that replacing a filter is a simple formality that can be postponed indefinitely. In practice, a clogged element becomes a breeding ground for bacteria and fungi, which are carried throughout the cabin along with the air flow. In the case of Nissan Murano Z51, the design of the ventilation system has its own characteristics that require a careful approach when selecting consumables and carrying out work.
Design features of the Murano Z51 ventilation system
Unlike simpler models, the crossover Nissan Murano is equipped with a sophisticated climate control system, which is integrated with the instrument panel. Location cabin filter located behind the glove box (glove compartment), which is a standard solution for many modern cars, but requires careful access. Filter housing in the body Z51 has a specific shape that does not allow the installation of parts from other models, even from the line Nissan.
It is important to consider that depending on the configuration and year of manufacture, the system may have different fan performance. This affects the aerodynamic drag that the filter element creates. If you install a filter that is too tight without taking into account the flow capacity, it may cause overheating stove fan and its premature failure. Therefore, when choosing, you should always check the manufacturer’s recommendations regarding air flow resistance.
Particular attention should be paid to the presence of a carbon layer in the filter. In a large city, where the concentration of exhaust gases is high, a conventional paper filter cannot cope with trapping toxic substances. Coal layer in Nissan Murano works as an adsorbent, retaining molecules of gases and odors, but it also has its own saturation resource and requires more frequent replacement.
Original articles and high-quality analogues
When selecting spare parts for Nissan Murano Z51 The first step is to consider original solutions. The manufacturer uses several articles depending on the type of filter: regular paper or carbon. The original ensures a perfect fit and no gaps through which unfiltered air can enter the system. However, the cost of original spare parts is often too high, and many owners are looking for worthy alternatives.
- 🏷️ Original (charcoal): 27277-CA000 is a standard of quality, but a high price.
- 🏷️ Original (paper): 27277-CA010 - basic version, retains odors worse.
- 🏷️ Analogue (coal): Mann CUK 2939 is an excellent, highly purified option.
There are hundreds of offers on the market, but not all of them are suitable in geometry. Cheap analogues are often smaller in size or use low-quality adhesive, which over time can peel off and clog the ventilation system channels. Before purchasing, be sure to check the labeling on the packaging to ensure compatibility with the body. Z51.
Comparing the main characteristics of popular brands will help you make an informed choice. Below is a table that compares key filtering parameters and resource.
| Brand/Model | Filter type | Purification degree (%) | Presence of a coal layer | Average resource (km) |
|---|---|---|---|---|
| Nissan (OEM) | Coal | 98% | Yes | 15 000 |
| Mann-Filter | Coal | 97% | Yes | 12 000 |
| Purflux | Coal | 95% | Yes | 10 000 |
| Big Filter | Paper | 85% | No | 8 000 |
⚠️ Attention: Never install the filter “the other way around”. The air flow direction arrow on the frame must coincide with the direction of air movement in the system. An error of 180 degrees will dramatically reduce the efficiency of the air conditioner.
- Original
- Premium analogue (Mann, Mahle)
- Budget analogue
- Haven't changed it for a long time
Step-by-step instructions for replacing an element
The process of replacing the cabin filter in Nissan Murano Z51 does not require specialized tools and can be done by any car owner. The main thing is to act carefully so as not to damage the plastic clips of the glove box, which can become brittle over time. The whole process takes no more than 15-20 minutes if the correct sequence of actions is followed.
☑️ Preparation for replacement
The first step is to open the glove box and remove it completely. To do this, you need to press the side stops that hold the door in the open position. In some configurations, it may also be necessary to unscrew the screws or loosen the fastenings from below. Be careful: There are often additional wiring or air ducts under the glove compartment that cannot be caught.
After removing the box, you will see the plastic cover of the filter housing. It is attached with latches that need to be carefully snapped off with your fingers or a flat-head screwdriver. Do not use excessive force to avoid breaking the fragile plastic. By removing the cover, you will have access to the old filter, which must be carefully pulled out towards you.
- 🛠️ Tool: All you need is a flathead screwdriver (just in case) and a new filter.
- 🛠️ Inspection: Check the case for dust and debris; if there is any, remove it with a vacuum cleaner.
- 🛠️ Installation: Insert the new filter exactly in the direction of flow arrow.
Installation of a new element occurs in the reverse order. Make sure the filter media fits snugly against the edges of the housing. If gaps remain, air will flow past the filter, making its installation pointless. After installing the cover, return the glove box to its place, making sure that all latches click into place until a characteristic sound is heard.
What should I do if the filter cover does not close?
If the lid does not close, most likely you have installed the filter incorrectly or it is deformed. Check to see if the carbon layer protrudes beyond the frame. It is also possible that small debris has gotten into the housing, preventing the latches from closing.
After completing the work, turn on the ventilation system and check operation in all modes. If you hear unusual noises or whistling, the filter may not be installed level or the lid is not pressed tightly enough. In this case, the procedure will have to be repeated.
Before installing the new filter, you can lightly wipe the inside of the housing with a damp cloth to remove accumulated dust and mold spores. This will enhance the effect of installing a new element.
Common problems and signs of malfunction
How do you know when it's time to change the filter? The most obvious sign is a decrease in the power of air flow from the deflectors when the fan is on. Owners Nissan Murano Z51 People often complain that the air conditioner stops blowing with the same force, although the compressor itself is working properly. This is a direct consequence of a clogged filter element.
The second important symptom is the appearance of a specific smell of mold or dampness when the system is turned on. If the smell persists after replacing the filter, the problem may be deeper and require cleaning the air conditioner evaporator of deposits. However, in most cases it is enough to simply replace the old, damp filter with a new one.
⚠️ Attention: If you notice that your windshield is fogging up much faster than usual, this is a sure sign that the filter is clogged and is not letting in enough fresh air to dry the interior.
Sometimes the problem lies not only in the filter itself, but also in its mounting system. The plastic guides can break, causing the filter to wobble and leak air. In such cases, it is recommended not only to replace the consumable, but also to check the integrity of the housing and latches.
Regular filter replacement is not only a matter of comfort, but also protects the health of passengers from allergens and harmful impurities, as well as preserving the life of expensive components of the ventilation system.
Seasonal features of operation
Depending on the time of year, the load on the filtration system changes. In summer, during the period of flowering plants and high activity of allergens, the use of a carbon filter becomes critical. Paper analogues do not cope well with the smell of exhaust gases, which inevitably enter the cabin in traffic jams.
In winter, the situation is different: the filter must effectively retain reagents and salt that are sprinkled on roads. Moist air passing through a cold filter can cause ice to form inside the system if the filter is already saturated with moisture. Therefore, before the start of the winter season, it is recommended to check the condition of the element and, if necessary, replace it.
Spring is a time of rain and mud. If you often drive on dirt roads or just in rainy weather, the filter will clog faster than usual. In such conditions, the replacement interval should be reduced to 5-7 thousand kilometers, despite the manufacturer’s recommendations.
Impact on climate control performance and efficiency
A clogged filter creates increased resistance for the fan, forcing it to work at its limit. This leads to an increase in the load on the generator and, as a consequence, to a slight but noticeable increase in fuel consumption. In hybrid versions or vehicles with a Start-Stop system, this may affect the operation of the energy recovery systems.
In addition, low airflow efficiency causes the air conditioner to work longer to reach the set temperature. This increases wear on the compressor and increases the risk of system overheating. Regular filter replacement helps maintain an optimal balance between comfort and equipment life.
For owners Nissan Murano Z51 It is important to understand that the climate control system is a complex mechanism where each element plays its role. The filter is the first line of defense, and its condition directly affects the quality of life in the car.
FAQ: Frequently asked questions
How often do you need to change the cabin air filter on your Nissan Murano Z51?
The recommended replacement interval is 15,000 km or once a year. However, if you operate your car in a city with a high level of pollution or often drive on dusty roads, you should change the filter every 7-10 thousand km.
Is it possible to install a filter without a carbon layer?
Technically possible, but not recommended. Filters without a carbon layer do not retain odors and toxic gases. For a comfortable ride in traffic jams and if you have allergies in the cabin, it is better to use only coal options.
What happens if you forget about the flow direction arrow?
If you install the filter incorrectly (against the flow), its efficiency will drop significantly, and the resistance to air flow will increase sharply. This may cause the fan to whistle and the air conditioner to perform poorly.
Can the old filter be washed and reused?
No, that's impossible. Cabin filters are disposable products. Dust and dirt clog the pores of the material, and even washing will not restore their capacity. In addition, a wet filter can become a breeding ground for bacteria.
Where exactly is the filter located in the body of the Z51?
The filter is located behind the glove box (glove compartment). To access it, you need to remove the box itself by unfastening the latches on the sides, after which access to the plastic cover of the filter housing will open.