BMW 523i SE - Climate Control Query

[avirao]

Hi All

I own a BMW 523i SE (1999 year). I have noticed the following:

The temp gauge in the display console below the speedo always shows -40c and on odd occasion goes switches to -50c and then goes back to -40c.

Secondly the climate control temp setting lowest point is always 16c is this correct?

Lastly the car is always blowing hot air. Even when i switch the air con on!!

Help! Any ideas what may be wrong?

Thanks

Avi

[avirao]

Thanks guys - what about the -40C - is that the ambient temp sensor not functioning properly? Could that hence be the reason why I am not getting any cold air?