Air conditioning in Nissan Terrano - this is not a luxury, but a necessity, especially in hot climates. However, over time, the efficiency of the cooling system decreases, and the lack of refrigerant is often to blame. But how do you know how much freon should be in the system? And why can’t you just add it “by eye”?
In this article we will look at exact refrigerant charging rates for different generations Terrano (including R20, J10 And J11), we’ll tell you how to check the freon level without equipment, and explain why an excess of refrigerant is just as dangerous as a lack of it. You will also find out what signs of leakage cannot be ignored and how to properly maintain your air conditioner so that it lasts longer.
Refrigerant standards for Nissan Terrano: official data
The amount of refrigerant in the air conditioning system Nissan Terrano depends on the generation of the car, engine type and even configuration. The manufacturer indicates these standards in the service manuals, but the information is often scattered. We have collected the data in one table for convenience.
Important: modern models Terrano (For example, J11 from 2020) use refrigerant R-1234yf, while older versions (R20, J10) are refueling R-134a. Mixing these types of freons is strictly prohibited - this will lead to compressor failure and oil leakage.
| Model and generation | Refrigerant type | Filling volume (g) | Oil volume (cm³) |
|---|---|---|---|
| Nissan Terrano R20 (1986–2006, petrol) | R-134a | 550–600 | 120–150 |
| Nissan Terrano R20 (diesel) | R-134a | 600–650 | 150–180 |
| Nissan Terrano J10 (2013–2020, 1.6/2.0) | R-134a | 450–500 | 100–120 |
| Nissan Terrano J11 (2020–present, 1.3 DIG-T) | R-1234yf | 400–450 | 80–100 |
Please note: the values in the table are for full refueling (for example, after repair or replacement of system components). If you simply add refrigerant, the amount will be less - usually 10-15% of normal.
⚠️ Attention: In models Terrano J11 with a hybrid system (eg e-Power) refrigerant volume may vary. Check the details at the service center Nissan by VIN code.
How to Check Refrigerant Levels Without Equipment
Not every car owner has access to a pressure gauge station or test manifold. However, there are indirect signs that indicate a lack of freon:
- 🌡️ The air temperature from the deflectors is above +10°C even at maximum airflow.
- 🔊 Extraneous noises (hissing, gurgling) when the air conditioner is turned on.
- 💧 Condensation on the air conditioner pipes (especially on the return line).
- 🚨 Frequent operation of the compressor protection (the climate control turns off spontaneously).
A more accurate way is visual inspection. peephole (if your model has it). Normally, a clear liquid without bubbles should be visible through it. If bubbles or foam are observed, this is a sign lack of refrigerant or air entering the system.
- Once a year before summer
- Only when the cold stops blowing
- Never checked
- I add freon myself
For accurate diagnostics, you will need to connect pressure gauges. System pressure Nissan Terrano normally it should be:
- On the low pressure side:
1.5–2.5 bar(at +20°C). - On the high pressure side:
12–18 bar(depending on ambient temperature).
⚠️ Attention: If the pressure on the high pressure side exceeds 20 bar, this may indicate condenser clogged or excess refrigerant. In both cases, urgent intervention is required!
Signs of a refrigerant leak: when to urgently call for service
Freon leakage is the most common problem with air conditioners. Nissan Terrano. It may occur due to:
- 🔧 Cracks in aluminum tubes or rubber hoses.
- 🔩 Loose connections (for example, on a compressor or condenser).
- 🛠️ Damage to O-rings (especially after winter downtime).
- 🚗 Corrosion of the air conditioner radiator (typical for models older than 10 years).
How to understand that freon is leaving?
- 🕳️ Cold air blows only for the first 5-10 minutes, then the temperature rises.
- 🛢️ Oily spots under the car (refrigerant washes oil out of the system).
- 🔍 Visible damage to tubes or condenser (for example, after an accident or careless repair).
- 💨 Constant operation of the cooling fan at maximum speed.
If you find at least one of these signs, do not delay your visit to the service. Long-term operation of an air conditioner with a leak leads to:
- Compressor breakdown (repair will cost
20 000–50 000 ₽). - Clogged receiver-dryer (replacement required, cost
5 000–12 000 ₽). - Moisture enters the system, causing corrosion and acid formation.
If the leak is small (up to 10% per year), you can temporarily add refrigerant with UV dye. This will help you accurately find the location of the damage during the next maintenance.
Step-by-step instructions: how to charge the air conditioner in Terrano yourself
If you decide to charge the air conditioner yourself, follow these instructions. Remember: for work you will need gauge manifold, refrigerant bottle (the right type!) and vacuum pump (if the system has been opened).
Turn off the engine, open the hood|Put on safety glasses and gloves|Connect pressure gauges to the service ports|Check the tightness of the connections with a soap solution|Make sure that the freon cylinder was stored vertically-->
Next, follow the algorithm:
- Checking residual pressure. Connect pressure gauges to the high and low pressure ports. If the arrow on the low pressure side shows
0 bar, the system is completely empty - vacuuming will be required. - Vacuuming (if necessary). Connect a vacuum pump to the system and evacuate the air for
15–20 minutes. Then close the valves and watch the pressure gauge: if the pressure does not rise, the system is sealed. - Refrigerant charging. Connect the freon bottle to the manifold (turned upside down!). Open the low pressure valve and fill slowly, monitoring the temperature of the air from the baffles (optimally
+5…+8°C). - Functionality check. Start the engine, turn on the air conditioning to maximum. The pressure on the low pressure side should stabilize at
1.8–2.2 bar.
Important: do not fill by eye! Excess refrigerant is just as harmful as its lack: it leads to increased load on the compressor and the risk of water hammer.
What happens if you recharge the air conditioner?
Excess freon does not have time to evaporate in the evaporator, and the liquid enters the compressor. This leads to water hammer - one of the most expensive breakdowns (repairing or replacing the compressor will cost 30 000–80 000 ₽). In addition, the pressure in the system increases, which can lead to rupture of hoses or the radiator.
What oil to use when refilling the Terrano air conditioner
The refrigerant in the air conditioning system circulates along with compressor oil, which lubricates moving parts and prevents corrosion. For Nissan Terrano The manufacturer recommends the following types of oils:
| Refrigerant type | Oil type | Recommended Brand | Volume per topping (cm³) |
|---|---|---|---|
| R-134a | PAG 46 | Nissan KE902-99932, Idemitsu PAG 46 | 30–50 |
| R-1234yf | POE (PAG 46 not compatible!) | Nissan KE902-99933, Castrol Icematic SW 32 | 20–40 |
Important: Do not mix different types of oils! For example, if you go from R-134a on R-1234yf, the system must be completely flushed and the oil replaced with a compatible one.
When adding refrigerant, add 10–20 cm³ oil for every 500 g freon. This compensates for the oil losses that inevitably occur during leaks.
Using the wrong oil will cause the compressor to seize and the high pressure valve to fail. Always check the compatibility of the oil with the type of refrigerant!
Terrano air conditioner maintenance: how to extend the life of the system
To have the air conditioner in your Nissan Terrano worked without problems, follow these recommendations:
- ❄️ Turn on the air conditioner once every 2 weeks even in winter (for 5–10 minutes). This prevents the seals from drying out.
- 🧹 Regularly clean the condenser (air conditioner radiator) from dirt and insects. Clogging leads to increased pressure and overheating.
- 🔄 Change cabin filter every
15,000 kmor once a year. A clogged filter impairs airflow and increases the load on the system. - 🛠️ Once every
2–3 yearscarry out full diagnostics air conditioner, checking for leaks and replacing the receiver-dryer.
Also note refrigerant quality. Cheap freon cylinders often contain impurities that clog the system. Buy refrigerant only from reputable suppliers (for example, Nissan Original Parts, DuPont, Honeywell).
If you live in a hot climate, consider installing additional fan to the condenser. This will reduce the risk of overheating and extend the life of the compressor.
Common mistakes when refilling an air conditioner and how to avoid them
Even experienced car owners sometimes make mistakes when servicing their air conditioning. Here are the most common of them:
- 🔄 Refueling without vacuum. If the system has been opened (for example, when replacing a compressor), air and moisture enter it. Without evacuation, this will lead to corrosion and reduced efficiency.
- 🌡️ Ignoring ambient temperature. Freon pressure depends on temperature. Recharge the air conditioner when
+18…+25°C, otherwise the pressure gauge readings will be inaccurate. - 🛢️ Using the wrong oil. For example, fill PAG 46 into the system with R-1234yf will lead to compressor failure.
- 🔧 Pulling service ports. Excessive force when connecting pressure gauges can damage the valves, causing leakage.
Another common mistake is adding freon without checking for leaks. If the refrigerant is lost, refilling without eliminating the cause will lead to a repeated loss of freon and additional costs.
If after refueling the air conditioner is unstable (for example, cold air comes out in jerks), most likely there is air left in the system. Repeat the vacuum procedure!
FAQ: Answers to frequently asked questions about coolant in Nissan Terrano
Is it possible to charge the air conditioner in Terrano R20 with R-1234yf freon instead of R-134a?
No, this is not possible without completely replacing system components. R-1234yf has different thermodynamic properties and requires a special compressor, receiver-dryer and seals. Attempting to refill will result in damage to the air conditioner.
How much does it cost to refill the air conditioner in a Terrano at a service center?
The cost depends on the region and type of refrigerant:
- R-134a:
1 500–3 000 ₽(without eliminating leaks). - R-1234yf:
3 000–5 000 ₽(due to the high price of freon).
If repairs are required (replacement of pipes, compressor), the price may rise to 10 000–30 000 ₽.
How often does the Terrano need to be recharged?
Under normal conditions, the refrigerant does not evaporate - its losses occur only through leaks. If the system is sealed, refilling is required once every 2–3 years (natural losses are 5–10% per year). If the air conditioner weakens more often, look for a leak!
What should I do if after refueling the air conditioner blows warm air?
Possible reasons:
- Insufficient amount of freon (check the pressure with a pressure gauge).
- Clogged expansion valve or receiver-dryer.
- Compressor malfunction (check if the clutch engages).
- Air entering the system (re-evacuation required).
If you cannot find the reason on your own, contact the service.
Is it possible to charge the air conditioner in the Terrano J11 with regular R-134a instead of R-1234yf?
Technically this is possible, but not recommended. R-134a has a higher global warming potential (GWP) and its use in new vehicles is prohibited by environmental regulations. In addition, the oil and some seals may need to be replaced.