The low speed should start at approx. 92 °C and the high speed should start at approx. 98°C.
If the car has AC, the low speed will also start when the condenser needs cooling.
In the low speed a resistor is put in series with the fan to slow down the speed
To me it sounds like the low speed don't work in your car.
I assume your car has two fans right?
It has seperate circuit for the too fans (relays and resistors). Maybe both of your resistors have failed.
Have you used MES (MultiECUscan) to check if both fan speeds work?
Yaaah I did, both first speed and high speed works with the MES, i changed the engine temp sensor and it solved the issue for me, but when i drive the car aggressively the temp raises to 97 or even 100 and i have to slow down so the temp goes back to 92,
another thing, what i understood about the fans circuit that it is for high speed and low speed not for the first fan and the second fan,