[Liew How Hui]

I just bought FiST (ST1 2015, European version) for a month and a very annoying thing occurred with my aircon: In the hot evening (the temperature indicator is 36-38 degree Celsius), after driving for awhile with the aircon on, the cold air would suddenly become normal fan. I had to turn OFF the aircon button and the turn ON again so that cold air will come on. This is extremely annoying when I am driving. I should be focusing on the road condition but I had to turn the aircon button off and then on again just to get back the cold air. How should I notify my dealer with this issue? The aircon works, it just doesn't work properly.

 

[arcyallen]

Several times now my "Auto" function has shut off on it's own. Either that or I'm bumping it, which I'm pretty sure I'm not. That, and: The trip computer changes modes on it's own while I'm out of the vehicle, AND on cold (30> degree days) the radio/SYNC starts to act as if I'm hitting menu buttons. I know THAT'S not normal, but I'm trying to monitor my entrance/exit from the vehicle to make sure I'm not hitting anything. Once I'm 100% sure I'll call Ford. They did a reset for the SYNC problem but it didn't help.

 

[Liew How Hui]

I seemed to be able to reproduce the weird situation with my aircon:

1. I turn off fresh air input (the max. button)
2. the temperature reach 37-38 degree Celsius

the aircon will automatically shut down and only the fan is blowing, which after awhile will be very hot because Malaysia is a hot country. I will need to turn off the aircon and on again to turn on the aircon. So I believe this is a software issue.

What I discover is that if I allow fresh air to come in, then, even at 38 degree Celsius, the aircon still functions properly. How did Ford design their software to create such a weird situation?

 

[Liew How Hui]

To my surprise this morning, I had ventilation on (I did not turn off the fresh air intake), and it was 27 degree Celsius, and suddenly hot air blow in. So I believe this is some electronic control problem and not just software issue. But now I can see this problem is actually random rather than faulty software control.