Ford Fiesta ST Forum banner

A/C completely and thoroughly died, and then……..

2592 Views 13 Replies 8 Participants Last post by  reddog99
I brought my car to the dealer to have my Mountune Quick Shift installed. Nice!!
When I drove it home, I noticed the A/C was completely dead and blowing hot air. It was colder outside!.

Went back to the dealer: "Your tech knocked out my AC." Anyway, they checked all the connections and the tech did not make any mistake, except it just wasn't working :(. Made an appointment to have the problem diagnosed. Next morning I thought I was going to drive around in a hot car. I start the car and it worked all of a sudden, A/C was refrigerator cold as if nothing happened. Called the service writer and cancelled the appointment.

We fiddled with the switches to now avail. Checked the coolant and it was fine. Should I have used the voice commands to turn it on and off?

Does anyone any idea what may have happened?
1 - 3 of 14 Posts
My ac died temporarily after a reflash. No physical changes to the car. The "fix" was putting it in defrost mode. Hasn't happened since.
I'll have to look out for this. I just installed a quick shift and removed my battery. But the only thing I noticed not working was the one touch window up and down.
You probably just need to retrain the limits.
I believe you need to manually roll the window down all the way and back up all the way a few times. Then it will do the auto down and up again.
  • Like
Reactions: 1
1 - 3 of 14 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.