Questo vale sulla classe C prova a vedere se va anche sulla A
You may have to resync the Climate Control stepper motors.
Press the defrost button and recirc. button at the same time... The flappers should cycle for up to 30 seconds then stop. if they keep flashing for an extended period of time it means they cant all normalize due to a faulty stepper motor or linkage (usually the latter). Pressing the button will usually work if you just replaced the battery or something yourself and dont have access to a SDS (and all your motors/linkages are fine).