HELP PLEASE IM leaving in florida and rain every day , a/c is full charge to expec,
As soon the FRONT windshield defrost is pushed
blows hot air .
​​​​super annoying with 100*F ,
please can anyone give me some advice

 

Check heater valve at operating temp by feeling the hoses going towards the firewall if hot then it needs to be changed.

 

Thank you , is not hot
one thing to be clear,
The hot air only only blowing hot fron the front windshield , no the other vents,
a/c is fighting to compensate for the heat from the defrost,
and they said all BMW , do not have a option , to change the hot air
I find that wrong , my others cars , all blows cold air if the a/c is on , NOT HOT FROM THE DEFROST , is so anointing

 

The only things it can be is:

1. Low on Freon (leak in system)
2. Defrost actuator not working correctly
3. IDrive is not set all the way to cold
4. Heater valve (highly likely if it's original)

Your a/c should be blowing cold. The only time my a/c did what you're describing was due to the heater valve. Once I replaced it everything worked as it should. I knew mine was bad because the hoses coming out of it was not cool at all

 

WELL i just fill the a/c to expects by bmw,
now i do a leak in the shafts of the a/c , very small , for that i evacuated all freon and vacuun , fill to espec ,
do you think that is why the houses from the heater valve are not hot , and why blows super hot air from the from windshield ?

 

Just change the heater valve anyway. It is old, there are diaphragm seals inside. If it isn't bad now, it will be. It is pretty easy to change and when I did mine, not much coolant even leaked out. Hardest part are the clamps and if you have the tool, they are easy -- $15 Amazon.