Radiator in Nissan Note - a critical element of the cooling system, on which stable engine operation depends. Even minor damage or blockage of the honeycomb can lead to overheating, accelerated engine wear and expensive repairs. Owners of this model often encounter radiator problems after 100–150 thousand kilometers, especially when operating in city traffic jams or aggressive climates.

In this article we will analyze all the nuances: from choosing an original or non-original radiator to step-by-step instructions for replacement. We analyzed reviews from car owners, technical data, and typical mistakes during repairs so that you can make an informed decision - to entrust the work to a service center or to handle it yourself. We will pay special attention hidden defects that are not visible during visual inspection, but lead to leaks 1–2 months after installation.

Signs of a radiator malfunction on a Nissan Note

The first symptoms of radiator problems are often ignored until the engine begins to overheat. Experienced mechanics recommend paying attention to the following signals:

  • 🔥 Engine overheating: The temperature gauge on the instrument panel rises above the middle of the scale, especially in traffic or when idling. On Nissan Note with motors HR15DE And HR16DE critical temperature - 105–110°C.
  • 💧 Antifreeze leak: puddles under the car (usually a sweetish smell and bright color), rapid consumption of coolant for no apparent reason. Often the leak appears only when the engine is warm.
  • 🚗 Cold air from the stove when the engine is running - a sign of an air lock or clogging of the heater radiator (on Note it is connected to the main radiator by a circuit).
  • 🔍 External damage: bent honeycombs, corrosion on aluminum parts, traces of oil in antifreeze (a sign of destruction of the gasket between the radiator and the oil cooler).

One of the most insidious signs is periodic overheating, which only appears under certain conditions (for example, when driving uphill or with the air conditioning on). This may indicate partially clogged tubes radiator or thermostat malfunction. You can check the system status using diagnostic scanner, which will show errors in the temperature sensor (for example, P0115 — sensor circuit malfunction).

⚠️ Attention: If, after stopping the engine, a hissing sound is heard from under the hood, this is a sign depressurization of the system. Never open the expansion tank cap until the engine has cooled down to 40–50°C: the pressure in the system may exceed 1.5 atmwhich will lead to burns!
📊 How often do you check the antifreeze level in your Nissan Note?
  • Once a month
  • Just before winter
  • When the light comes on
  • Never checked

Original and similar radiators: articles and prices

For Nissan Note (including restyled versions E11 And E12) original radiators are supplied by the company Calsonic Kansei - the same manufacturer as for Micra And Juke. Original art. numbers depend on the year of manufacture and engine type:

Model and year Original article number Manufacturer Approximate price, ₽ Notes
Note E11 (2006–2010), HR15DE 21460-4M000 Calsonic Kansei 12 000–15 000 With oil cooler
Note E12 (2010–2016), HR16DE 21460-4M00A Calsonic Kansei 14 000–17 000 Without oil cooler
Note e-Power (2017–present) 21460-4M010 Nissan (OEM) 18 000–22 000 Reinforced design for the hybrid

Analogs from trusted brands will cost 30–50% less, but here it is important to pay attention to material of manufacture:

  • 🔹 Denso (DRC0104) - aluminum, complete analogue of the original, price ~9,000 ₽.
  • 🔹 Nissens (64151) - copper-brass, dissipates heat better, but is 1.5 kg heavier. Price ~11,000 ₽.
  • 🔹 Behr Hella (8DK 355 125-031) - aluminum with plastic tanks, suitable for HR15DE. Price ~8,500 ₽.
  • 🔹 Sasic (3021460) is a budget option (~6,000 ₽), but there are often complaints about leaks after 1–2 years.

When choosing an analogue, be sure to check dimensions (original: 580×380×25 mm) and the presence of fan mounts. For example, on Note E12 The radiator is attached to the frame using 4 M6 bolts, and on E11 - using latches. Also check the package: the original set includes new ones O-rings And fastening clips, which are often absent from cheap analogues.

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When purchasing a radiator, be sure to check the integrity of the packaging. Damaged honeycombs (even microcracks) can lead to leakage after 500–1000 km. This is especially true for aluminum models, which are sensitive to mechanical stress during transportation.

Step-by-step DIY radiator replacement

Replacing the radiator with Nissan Note takes 2–3 hours if you have the tools. The main difficulty is antifreeze drain and access to the lower fastenings. You will need:

  • 🔧 Set of sockets and keys (10, 12, 14 mm).
  • 🔧 Screwdriver with a Phillips bit.
  • 🔧 Pliers for clamps.
  • 🔧 Container for draining antifreeze (minimum 5 l).
  • 🔧 New antifreeze (Nissan Coolant L248 or equivalent CoolStream A-110).
  • 🔧 Sealant for the cooling system (Loctite 577 or ABRO 11-AB).

Sequence of work:

  1. Antifreeze drain:

    Unscrew the expansion tank cap (on Note E11 it is located on the right under the hood). Then place a container under the drain valve on the radiator (lower left corner) and unscrew it counterclockwise. On Note E12 The faucet is plastic - be careful not to break it.

  2. Fan removal:

    Disconnect the fan power connector (3-wire connector). Then unscrew the 4 bolts securing the fan housing to the radiator (10 mm head). On hybrid versions e-Power Additionally, you will have to remove the battery.

  3. Removing the radiator:

    Loosen the clamps on the upper and lower pipes and remove them. Unscrew the 2 bolts securing the radiator to the frame (12 mm head) and carefully lift it up. Be careful - on some versions it is installed on the right temperature sensor, which is easy to damage.

Rinse the cooling system with distilled water | Check the condition of the pipes (cracks, softening) | Clean the mounting holes from dirt | Apply sealant to the rubber seals | Make sure the fan rotates freely-->

When installing a new radiator, pay attention to:

  • 🔹 Direction of pipes: the top one should be on the thermostat side, the bottom one on the pump side.
  • 🔹 Tightening the clamps: use worm clamps (article Nissan 14047-4M000), since standard plastic ones often burst.
  • 🔹 Checking for leaks: after adding antifreeze, start the engine and warm it up to operating temperature (90–95°C), then inspect all connections.
⚠️ Attention: On Nissan Note with air conditioning, when replacing the radiator, it is necessary to remove the condenser (air conditioning radiator). This requires vacuuming the system after reassembly - this cannot be done without special equipment. If you have no experience, it is better to entrust this part of the work to the service.

Typical replacement mistakes and how to avoid them

Even experienced car owners make mistakes that lead to repeated leaks or overheating. Here are the most common:

  1. Using old antifreeze:

    Antifreeze loses its properties after 5 years or 100 thousand km. If you refill the drained fluid, the risk of radiator corrosion increases by 40%. Always use new antifreeze with permission Nissan L248/L250.

  2. Incorrect bleeding of the system:

    After replacing the radiator, air remains in the system, which leads to local overheating. To avoid this, after adding antifreeze:

    • 🔹 Start the engine and let it idle for 5 minutes.
    • 🔹 Rev up to 3000 rpm 2-3 times - this will help expel the air.
    • 🔹 Squeeze the upper radiator pipe with your hand (wearing gloves!).
  • Savings on pipes:

    Connections on Note wear out at the same time as the radiator. If you leave the old ones, they may burst in 1-2 months. The cost of a set of pipes (Nissan 21510-4M000) - about 3,000 ₽.

    • Another common problem is re-upholstery of fastenings. Aluminum radiators (for example, from Denso) are sensitive to deformation. When tightening bolts, use a torque wrench with force 8–10 Nm. Plastic tanks (like Behr Hella) can crack with a force of more than 12 Nm.

    What happens if you don't replace the radiator on time?

    If the leak is ignored, the antifreeze mixes with the oil, forming an emulsion that clogs the oil passages. This leads to oil starvation And scoring on the cylinder walls. In 70% of cases, such repairs cost 80,000–120,000 rubles (boring the block, replacing piston rings, liners). On Nissan Note with motor HR16DE especially vulnerable turbocharging (if installed) - its resource is reduced by 2–3 times.

    Flushing the radiator without removing it: when possible

    If the radiator is clogged but has no mechanical damage, it can be washed without dismantling. This method is suitable for Note with mileage up to 150 thousand km, if:

    • 🔹 The engine temperature increases gradually (not sharply).
    • 🔹 Antifreeze is cloudy, but without rust particles.
    • 🔹 There are no visible leaks or damage to the cells.

    For rinsing use special compounds:

    • 🧪 Liqui Moly Kuhler-Reiniger — removes lime deposits.
    • 🧪 Hi-Gear Radiator Flush — breaks down oil contaminants.
    • 🧪 LAVR Radiator Flush Classic — budget option (~300 ₽).

    Washing instructions:

    1. Drain the old antifreeze (as described in the replacement section).
    2. Fill in the washing liquid diluted with distilled water (the proportions are indicated on the packaging).
    3. Start the engine and let it idle for 15–20 minutes.
    4. Drain the rinse and repeat the procedure with clean water 2-3 times.
    5. Refill with new antifreeze.

    The effectiveness of washing can be assessed by color of the drained liquid:

    • 🟢 Green/blue — the system is clean.
    • 🟤 Brown — rust residues (re-washing required).
    • ⚫ Black — oil deposits (you need to check the cylinder head gasket).
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    Flushing the radiator without removing it is a temporary solution. If the blockage is severe (for example, the honeycomb is clogged with dirt by 50% or more), the cooling efficiency will decrease by 30–40%, and the radiator will still have to be replaced.

    Choosing antifreeze for Nissan Note: what to fill after replacement

    Cooling system Nissan Note sensitive to the type of antifreeze. The manufacturer recommends using carboxylate coolants with permission Nissan L248 (green) or L250 (blue). These antifreezes are compatible with aluminum radiators and do not form gel deposits.

    Comparison of popular antifreezes:

    Brand Article Type Service life Price for 5 l, ₽ Notes
    Nissan Coolant KE902-99932 Carboxylate (L248) 5 years 2 500–3 000 Original, green
    CoolStream A-110 CS010-005 Carboxylate 5 years 1 200–1 500 The best analogue of the original
    Sintec Unlimited G12++ Lobridny No limit 1 800–2 200 Suitable for Note e-Power
    Felix Carbox G12+ Carboxylate 5 years 900–1 200 Budget option

    Important details:

    • 🔹 Don't mix antifreezes of different types (for example, G11 And G12+). This will lead to the formation of flakes that will clog the radiator.
    • 🔹 On Note E12 (2010–2016) cooling system volume — 5.3 l, but when replacing the radiator, 4–4.5 liters are enough (part of the antifreeze remains in the engine block).
    • 🔹 If you use concentrate, dilute it distilled water in a 1:1 ratio (for climates with temperatures down to -35°C).
    ⚠️ Attention: Antifreeze CoolStream A-110 incompatible with pump gaskets Nissan Note before 2010 release. If you have a model E11, use only the original KE902-99932 or Felix Carbox.

    Frequently asked questions about radiators on Nissan Note

    Is it possible to drive with a cracked radiator if you add antifreeze?

    No. Even a small crack expands over time due to vibrations and temperature changes. In addition, air enters the system, which leads to local overheating (for example, in the 4th cylinder), which is not visible from the temperature sensor. On Note with motor HR16DE This can lead to deformation of the block head.

    How to check the radiator for clogging without removing it?

    Warm up the engine to operating temperature (90–95°C) and compare the temperature of the upper and lower radiator pipes. If the lower pipe is cold and the upper pipe is hot, the radiator is clogged. Also pay attention to the operation of the fan: if it turns on too often (every 1-2 minutes), this is a sign of poor heat transfer.

    What radiators fit other Nissan models?

    On Nissan Note E11 (2006–2010) fits radiator from Micra K12 (article 21460-4M000) and Juke F15 (until 2014). For Note E12 (2010–2016) - radiator from Almera N16 (21460-4M00A), but the fan mounts will need to be modified. Before purchasing, check the dimensions and location of the pipes!

    How long does a radiator last on a Nissan Note?

    Service life depends on operating conditions:

    • 🔹 Original radiator (Calsonic Kansei) - 150–200 thousand km.
    • 🔹 High-quality analogues (Denso, Nissens) - 100–150 thousand km.
    • 🔹 Budget radiators (Sasic, Febi) - 50–80 thousand km.

    In regions with hard water or frequent temperature changes (for example, Siberia), the resource is reduced by 30–40%.

    Do I need to change the thermostat along with the radiator?

    Required if:

    • 🔹 The engine takes a long time to warm up (more than 10 minutes to 90°C).
    • 🔹 The temperature fluctuates (either 80°C or 105°C).
    • 🔹 The thermostat does not open when heating (you can check by putting it in boiling water).

    On Nissan Note thermostat (Nissan 21200-4M000) costs ~2,500 ₽, but replacing it will save you engine repairs.