AC went from cooling really well to barely cooling from one day to the next...

What is your question?

No noticeable sounds and no indicators on dashboard or console, very sudden change; one day it could freeze you out of the car, the next it barely cools at all... I already tried the EC button... with EC activated, the air from the vents is slightly warmer...

What makes this problem better or worse?

When it’s hotter outside

How long has your 2003 Mercedes-Benz CLK430 had this problem?

Two days