There’s 4 airflow speed on the car switch. They aren’t affected by whether Air conditioning is enabled or not.
However, even by setting air temperature to the lowest, there’s almost no difference between the case Air conditioning is enabled or it’s disabled. It’s so much that I can’t feel the difference of temperature at air flow speed 3 and 4 (so while there’s a difference which is hard to notice opening the windows is definitely more efficient under a sunny weather without clouds).
I’m talking about this because the problem persists even after leaving the air conditioner at full speed and lowest temperature after 1 hour while driving on the motorway.
Radiator fans’ start almost always immediately when I enable air conditioning even straight after starting the engine and the cold engine is still on (so radiator fans’s is always on when air conditioning is enabled). In that case Radiator fans’ stop after pushing the air conditioner button for switching it off.
Engine ʀᴘᴍ runs a little faster (which sounds normals) and enabling air conditioning works very fast at removing mist (so while the air is almost not cooler it’s definitely dryer).
There’s no ᴏʙᴅ error codes about the air conditionner system.
As I never traveled inside a Toyota during summer I don’t know if it’s not normal or Toyota designed their cars so that drivers or passengers can’t get sick/cold by putting the temperature of their air conditioner temperature’s too low (I bought the car at the beginning of last winter so I could only ensure that heating the car works and can put the temperature inside the car to 15℃ in 3 minutes when outside temperature is 0℃ or below so heating definitely works far better than cooling).
If it’s not normal, then where does the problem can come from ? And, how to confirm the supposed root cause of the issue ?
It was simply the matter of replacing the old gas.