Air conditioning and ventilation system in a crossover Nissan Murano the second generation (Z51 body) plays a critical role in creating a comfortable microclimate. Over time, the filter element accumulates dust, pollen and unpleasant odors, losing its properties. Ignoring this simple maintenance can lead to reduced performance of the climate system and the appearance of condensation on the windows.
The replacement procedure does not require complex tools or deep knowledge of the automotive device, but has its own nuances specific to this particular model. Many owners encounter difficulties accessing the filter housing or the new element is not oriented correctly. Proper installation ensures maximum air flow and efficient carbon bed operation.
Why is timely replacement necessary and how often to do it?
Main task cabin filter — cleaning the air entering the cabin from solid particles and harmful impurities. In conditions of dusty roads or large amounts of urban dust, the resource of the element is reduced significantly. If you notice that the air flow from the deflectors has become weaker, and when you turn on the air conditioner, a specific smell of dampness appears, this is a direct signal to action.
The recommended replacement interval is 15,000 kilometers or once a year, whichever comes first. However for Nissan Murano Z51, operated in a metropolis, experts advise maintenance every 10,000 kilometers. This is due to the high dust content of the air and the active use of the recirculation system.
The use of low-quality analogues can lead to deformation of the filter housing and the entry of dirt into the air conditioner evaporator. Cleaning an evaporator is an expensive and time-consuming procedure, so prevention through filter replacement is a cost-effective strategy. You should not save on the health of passengers and the durability of the climate system.
- 🌿 Air quality improves and the risk of allergic reactions in passengers decreases.
- 💨 The efficiency of the air conditioner and stove increases, the interior warms up or cools faster.
- 🛡️ The formation of mold and mildew inside the air ducts is prevented.
Choosing a suitable filter: original or analogue
There are many options for filter elements for crossovers on the auto parts market. Murano. The official part number of the original filter often changes depending on the year of manufacture and configuration, so before purchasing, you must check the vehicle's VIN code. The original part is usually marked 27277-ZE00A or similar variations, but it is better to check with the dealer for the exact number.
Most owners choose carbon filters, as they have an additional layer of activated carbon, which traps not only dust, but also exhaust gases, as well as unpleasant odors from outside. Conventional paper filters only deal with particulate matter, so their efficiency in the urban cycle is lower. For a region with high gas pollution, coal is the only choice.
When choosing analogues, pay attention to the quality of the frame and the density of the filter material. Cheap knockoffs often have a weak frame that can break during installation, or a material that is too thick and blocks airflow. Trusted brands such as Cabin, Mahle or Sakura, offer decent quality at a price lower than the original.
| Manufacturer | Filter type | Approximate price | Features |
|---|---|---|---|
| Nissan (Original) | Coal | High | Perfect fit, guaranteed quality |
| Sakura | Coal | Average | Good value for money |
| Mahle | Coal | Average | High degree of filtration, durability |
| Big Filter | Paper | Low | Budget option, quick replacement |
⚠️ Attention: When purchasing a filter, be sure to check for the presence of a carbon layer on the cut. Some sellers, under the guise of a carbon filter, may offer a regular paper element that will not protect against odors.
- Original Nissan
- Coal analogue (Mahle/Sakura)
- Budget paper
- I only buy from the dealership
Tools and preparation for work
You do not need a lift or a specialized set of tools to complete the replacement procedure. All work is done in the engine compartment, and it is enough to have a flat-head screwdriver on hand and perhaps gloves to protect your hands from dirt. Before starting work, make sure the engine is turned off and the hood is securely in the open position.
Clear the area around the filter location of leaves, branches and dust. This is important so that when opening the housing cover, contamination does not get inside the ventilation system. If there is a lot of dirt on the hood, it is better to wipe it with a damp cloth before starting work. Cleanliness in the engine compartment is the key to preventing excess dust from getting into the cabin.
Some owners prefer to carry out the replacement in pairs, so that one person fixes the hood or lights, and the other performs the manipulations. However, an experienced car enthusiast will cope with this task alone in 10–15 minutes. The main thing is to act carefully so as not to damage the plastic latches.
☑️ Preparation for replacement
Step-by-step instructions for replacing the filter
Filter location on Nissan Murano Z51 located on the right side of the engine compartment (passenger side), behind the plastic protective cover. This cover is secured with several latches that must be carefully unfastened. Do not use excessive force as the plastic may crack if handled carelessly.
After removing the cover, you will see the old filter element, which may be very dirty and deformed. Pull it out by the edge and immediately inspect the cabinet for any foreign objects, such as leaves or insects, that may have gotten inside. If anything is found, carefully remove it with tweezers or compressed air.
Insert the new filter into the housing, observing the correct airflow direction. There is an arrow on the filter frame indicating the direction of air flow. The arrow should point towards the passenger compartment (down or back, depending on the specific body revision, but usually “down” towards the evaporator). An error in orientation drastically reduces the filtration efficiency.
What to do if the cover does not come off?
If the latches are stuck or dirty, try prying them slightly with a flat-head screwdriver wrapped in a rag. Do not press on the plastic, but try to snap out the latches one by one, starting with the top ones. Sometimes lightly tapping the lid body with your hand to loosen the clamps helps.
After installing the new element, return the plastic cover to its place and make sure that all the latches are locked until they click. Check the secure fit by lightly pulling the cover. If it is loose, you may not have inserted the filter all the way in or the latch may not work.
- 🔧 Use a flathead screwdriver to unclip the clips to avoid scratching the plastic.
- 🔄 Be sure to check the air flow direction arrow before final installation.
- 🧹 Wipe the inside of the filter housing from dust before inserting a new element.
⚠️ Attention: It is strictly not recommended to install a filter without a flow direction arrow or install it “the other way around”. This can cause the filter material to rupture under air pressure and allow dirt to enter the cabin.
The main task during installation is the correct direction of air flow. The arrow on the filter must point towards the cabin, otherwise the cleaning efficiency drops to zero.
Common mistakes and how to avoid them
One of the most common mistakes is installing the filter backwards. Filter manufacturers apply an arrow, but sometimes it is invisible or erased. If you are in doubt about the direction, look at the old filter: it should also have an arrow that showed the correct direction. If there is no arrow, focus on the direction of air movement in the system.
Another problem is damage to the rubber seal on the filter housing or the filter itself. When removing an old element, the edges often tear if it is heavily clogged. The new filter should fit tightly into the housing without distortion. If the filter is loose, air will flow past it, making replacement pointless.
Sometimes car owners forget to clean the body of debris. Leaves and branches left inside can clog the air conditioner evaporator, causing it to overheat and fail. This is especially true for Murano, where the filter housing is located in an area exposed to falling leaves.
Before purchasing a new filter, take a look at the old one. If you see that it is severely deformed or torn, check the case for sharp edges or burrs that could damage the material.
Some drivers try to save money by using a filter that has been removed, washed and dried. This is unacceptable! The filter material has a structure that, when wet, is destroyed, and dirt eats into the fibers. A washed filter loses its properties and can become a source of bacteria.
Diagnosis of problems after replacement
After installing the new filter, turn on the ventilation system and check the operation of the air conditioner. Pay attention to the force of air flow from the deflectors. If the flow has become significantly stronger, it means that the replacement was successful and the blockage was eliminated. Also check that there is no extraneous noise when the fan is operating.
If you notice an unpleasant odor immediately after replacement, the air conditioner evaporator may already be dirty and require dry cleaning. A new filter will not eliminate the odor if the source is deeper in the system. In this case, professional disinfection of the air conditioning system will be required.
In rare cases, whistling or noise may occur in the air ducts after replacement. This may be due to improper installation of the filter, which blocks part of the passage, or damage to the fan impeller. Carefully inspect the filter for distortions.
How to check if the installation is correct?
Turn on the air conditioner to maximum and place your palm near all the vents. If there is no air on one side, but a strong flow on the other, the filter may be installed unevenly and block the channel.
⚠️ Attention: If after replacing the filter the air flow does not increase, do not try to disassemble the ventilation system yourself. There may be a problem with the fan motor or dampers and requires diagnostics at a service station.
FAQ: Frequently asked questions from Murano Z51 owners
Do I need to change the filter in winter?
Yes, the filter works all year round, trapping dust and exhaust gases even in the cold season. In winter, it also prevents reagents and road dirt from entering the cabin. It is recommended to change it at least once a year, regardless of the season.
Is it possible to install a filter without a carbon layer?
Technically it is possible, but it is not recommended for the city. A carbon-free filter does not retain exhaust odors or ozone, so the smell can be unpleasant in traffic jams. For Murano Z51 It is better to choose coal options.
Is it difficult to get to the filter yourself?
No, this is one of the simplest maintenance procedures. Access is from the engine compartment and does not require removing the bumper or other components. Just unfasten the plastic cover.
What happens if you don't change the filter on time?
The air flow decreases, the load on the fan increases, and a smell of dampness and mold may appear. In the long term, this can lead to a clogged air conditioner evaporator, which requires costly repairs.
What is the article number of the original filter?
The most common article 27277-ZE00A, but before purchasing, be sure to check the VIN number of your car, as changes are possible depending on the year of manufacture and configuration.
Regularly replacing the cabin filter is the key to clean air and the health of all passengers. For Nissan Murano Z51 This procedure is simple and does not require a service visit. By following simple recommendations and choosing high-quality consumables, you will ensure comfortable operation of the climate system for many years. Correct orientation of the filter along the flow arrow is a critical factor in its effectiveness.