Nissan Terrano - a popular crossover, which in Russian realities is used all year round, which means the air conditioning system experiences serious loads. One of the key parameters for maintaining climate control performance is correct amount of freon. A lack or excess of refrigerant leads to decreased cooling efficiency, increased compressor wear, and even system failure.
In this article we will look at the official standards for refilling freon for Nissan Terrano different generations (including restyled versions), we’ll tell you how to check the refrigerant level yourself, and give step-by-step instructions for refilling. You will also find out what signs indicate a freon leak, and how to avoid mistakes when servicing a car air conditioner.
Official data: how much freon is in Nissan Terrano by year
Freon volume in the air conditioning system Nissan Terrano depends on the year of manufacture, engine type and modification. The manufacturer indicates these parameters in the service manuals, but the information is often scattered. We have systematized the data for the most common versions of the crossover in Russia:
| Model and year | Engine type | Freon volume (g) | Refrigerant type | Notes |
|---|---|---|---|---|
| Nissan Terrano I (R20, 2014–2017) | 1.6 l (HR16DE) | 450 ± 25 | R-134a | No climate control |
| Nissan Terrano I (restyling, 2018–2020) | 1.6 l (HR16DE) | 500 ± 25 | R-134a | With climate control |
| Nissan Terrano II (2021–present) | 1.5 l (HRA0) | 420 ± 20 | R-1234yf | European version |
| Nissan Terrano (for Indian market) | 1.5 l diesel (K9K) | 550 ± 30 | R-134a | Enlarged radiator |
Important: 2021 and newer models use R-1234yf freon, which cannot be mixed with R-134a. Attempting to charge the system with an incompatible refrigerant will result in compressor failure and costly repairs.
If your version Terrano is not listed in the table, check the VIN code information with an authorized dealer or in the service manual. The volume of freon may vary even within the same modification due to configuration features (for example, the presence of an additional heat exchanger).
- R-134a
- R-1234yf
- I don't know
- Other
Signs of a lack or excess of freon in the system
Determine what's in the air conditioner Nissan Terrano Incorrect amount of freon, based on several characteristic symptoms. It is important to consider that some symptoms (for example, poor cooling) may also indicate other problems - a clogged filter drier or a faulty fan.
- ❄️ Poor cooling: The air from the deflectors blows barely cool, even at maximum power. This is the most obvious sign lack of freon.
- 🔥 Compressor overheating: If you hear a loud hum or whistle when you turn on the air conditioner, and then the compressor turns off, this may indicate excess refrigerant or the wrong type.
- 💧 Freezing of pipes: Frost or ice appears on the aluminum lines of the air conditioner. Most often this happens due to Freon leaks or system clogging.
- 🚨 Protection triggered: The climate control fault indicator lights up on the instrument panel (for example, error
U1000orP0530).
⚠️ Attention: if after refilling freon the air conditioner works normally, but after 1-2 weeks the efficiency drops again - in the system 100% there is a leak. In this case, diagnostics using an ultraviolet dye or an electronic leak detector is required.
For an accurate diagnosis, it is recommended to check system pressure using a manifold. Normal indicators for Nissan Terrano with freon R-134a:
- Low pressure (suction):
1.5–2.5 barat +20°C. - High pressure (discharge):
12–18 barat +20°C.
Step-by-step instructions: how to recharge the air conditioner in a Nissan Terrano
Refilling freon yourself is possible, but requires care and compliance with safety precautions. You will need:
- 🔧 Refilling kit (gauge manifold with hoses).
- 🧊 Freon cylinder (type R-134a or R-1234yf depending on the model).
- 🔍 Ultraviolet lamp and glasses (to check for leaks).
- 🛠️ Key for the service port (usually on
10 mmor12 mm).
Sequence of actions:
- Preparation: Stop the engine, open the hood and locate the A/C service ports. B Nissan Terrano they are located near the battery (low pressure port) and near the radiator (high pressure port).
- Equipment connection: Connect the pressure gauge hose to the low pressure port (usually marked with a blue cap). Connect the second hose to the freon cylinder.
- Pressure check: start the engine and turn on the air conditioner to maximum mode. Compare the pressure gauge readings with the standard ones (see section above).
- Refueling: slowly open the cylinder valve and monitor the pressure. Refill freon in portions according to
50–100 g, controlling the air temperature from the deflectors (optimally5–8°C). - Check: After refueling, close the valve, disconnect the equipment and check the operation of the system. If cold air comes from the deflectors and the tubes do not freeze, the refueling was successful.
Clear the service ports of dirt|Check the hoses for leaks|Make sure the compressor is working|Use only the specified type of freon|Wear safety glasses and gloves-->
⚠️ Attention: if, when connecting a pressure gauge to the low pressure port, the arrow shows0 bar- in the system complete absence of freon. In this case, refueling without preliminary vacuumization will lead to moisture ingress and failure of the compressor. Be sure to pump out the air with a vacuum pump within15–20 minutes.
If after refueling the air conditioner operates jerkily or makes strange sounds, check the oil level in the compressor. For Nissan Terrano oil is used with R-134a freon PAG 46, for R-1234yf - POE 46.
Where are the service ports located on the Nissan Terrano?
Owners Nissan Terrano often face the problem of finding service ports for refilling freon. Their location depends on the year of manufacture and configuration, but there are general patterns:
- 🔵 Low pressure port (refill): located on a thick aluminum tube running from the compressor to the evaporator. Usually closed with a blue or black cap with the inscription
L(Low). - 🔴 High pressure port (diagnostics): located on a thin tube leading to the condenser. Red cap with inscription
H(High).
The photo below shows a typical port layout for Nissan Terrano I (2014–2020):
Photo of service ports (clickable)
On most versions, the low pressure port is located to the right of the battery, next to the brake booster. The high pressure port is to the left of the radiator, closer to the front bumper.
If the ports cannot be found, use service manual or refer to the vehicle's wiring diagram. On some modifications (for example, with a diesel engine K9K) ports can be hidden under plastic covers.
Common mistakes when refilling freon and how to avoid them
Improper refilling of the air conditioner can lead to serious damage. Let's look at common mistakes and ways to prevent them:
| Error | Consequences | How to avoid |
|---|---|---|
| Using the wrong freon (for example, R-134a instead of R-1234yf) | Compressor failure, refrigerant leakage through incompatible seals | Check the sticker under the hood or VIN data |
| Refilling without vacuuming after a leak | Moisture entering the system, tube corrosion, compressor jamming | Always evacuate the air with a vacuum pump for at least 15 minutes |
| Refilling (excess freon) | Increased pressure, compressor overload, frozen pipes | Monitor the pressure with a pressure gauge and refill in portions |
| Ignoring the leak | Constant loss of freon, damage to the ozone layer (for R-134a) | Use UV dye or electronic leak detector |
One of the most dangerous mistakes is refilling freon with the engine running at high speeds. This can lead to water hammer in the compressor. Always charge the air conditioner at idle speed (approx. 1000 rpm) with air recirculation mode turned on.
If after refueling the air conditioner runs for less than 5 minutes and turns off, check the pressure sensor. B Nissan Terrano it often breaks down and requires replacement (part number: 39280-4M000 for R-134a).
How to check the system for freon leaks
Freon leakage is the most common cause of air conditioner malfunction in Nissan Terrano. You can detect it in several ways:
- Visual inspection: Inspect the aluminum tubes, air conditioner radiator and connections for oil stains. Freon circulates along with oil, so a leak is always accompanied by traces of lubricant.
- Ultraviolet method: add a UV dye to the system (for example,
UV Dye), and after 1-2 days check the system with an ultraviolet lamp. Leak points will glow bright yellow. - Electronic leak detector: The device senses refrigerant and beeps when a leak is detected. Suitable for searching for microcracks.
- Soap solution: Apply soap suds to suspicious areas. Bubbles will appear where there is a leak.
Typical leak locations in Nissan Terrano:
- 🔧 Connections of tubes with compressor and condenser.
- 🚗 Air conditioner radiator (often damaged by stones).
- ⚙️ O-rings for service ports.
- 🔄 Tee or receiver-dryer (on models up to 2017).
⚠️ Attention: If a leak is found in the air conditioner radiator, do not attempt to repair it. Aluminum radiator honeycombs cannot be soldered; the assembly assembly must be replaced (original article number: 27800-JM00A for Terrano I).
Cost of refilling freon at a service center vs doing it yourself
Air conditioner refill price in Nissan Terrano depends on the type of freon, region and level of service center. Consider the average prices for 2026:
| Service | Cost in service (₽) | Cost yourself (₽) |
|---|---|---|
| System diagnostics (pressure check) | 500–1000 | 0 (if there is a pressure gauge) |
| Refilling freon R-134a (up to 500 g) | 1500–2500 | 800–1200 (cylinder price) |
| Refilling freon R-1234yf (up to 420 g) | 3000–4500 | 2000–2500 (cylinder price) |
| Evacuation of the system | 1000–1500 | 0 (if there is a pump) |
| Leak detection (with UV dye) | 1500–3000 | 500–800 (dye price + lamp) |
Self-refueling is cheaper, but requires the purchase or rental of equipment (gauge manifold, vacuum pump). If you plan to service your air conditioner regularly, purchasing a set will pay for itself in 2-3 uses. For a one-time refill, it is cheaper to contact a service center.
Cost of original spare parts for air conditioning system repair:
- Compressor:
25 000–40 000 ₽. - Air conditioner radiator:
8 000–15 000 ₽. - Receiver-dryer:
3 000–5 000 ₽. - High/low pressure pipes:
4 000–7 000 ₽per set.
FAQ: Frequently asked questions about freon in Nissan Terrano
Is it possible to recharge the air conditioner in Terrano in winter?
Yes, but the verification efficiency will be lower. The optimal temperature for refueling is from +15°C. At low temperatures, freon does not circulate well, and the pressure gauge may show incorrect values. If refueling is urgently needed, use garage heating or do the work on a warm day.
How often does the Terrano need to be recharged?
Under normal conditions, freon leakage is up to 15% per year. It is recommended to check the refrigerant level every 2 years or when there is a noticeable deterioration in cooling. If the system is sealed, refueling may not be required for 3-4 years.
What happens if you mix R-134a and R-1234yf?
Mixing these refrigerants strictly prohibited. R-1234yf has a different chemical composition and requires special oils (POE). When mixing:
- A chemical reaction will occur to form acids that will corrode the seals.
- The compressor will fail within a few days.
- The system will require a complete flush and replacement of all rubber elements.
If you made a mistake with the type of freon, you must completely drain the refrigerant, flush the system and change the oil.
Why does the air conditioner blow warm air after refueling?
There are several reasons:
- Defective compressor (the clutch does not engage).
- clogged filter drier or expansion valve.
- Remained in the system air (poor vacuumization).
- Doesn't work condenser fan.
Check that the compressor is turned on (when the air conditioner is running, its pulley should rotate). If the clutch does not engage, check the fuse F32 (10A) in the block under the steering wheel.
Is it possible to charge the air conditioner in Terrano without a pressure gauge?
Technically possible, but highly not recommended. Without blood pressure control, you risk:
- Recharge the system, which will lead to tube rupture.
- Undercharge, which will cause the air conditioner to work ineffectively.
- Damage the compressor due to water hammer (if there is air left in the system).
The minimum set for safe refueling is a pressure manifold with a cylinder. It can be rented or purchased for 1 500–3 000 ₽.