Information Source: https://smartacsolutions.com/how-do-i... To reset your Mercedes air conditioning, follow these steps: Start your car and turn on the ignition. Press the "AC" button to activate the air conditioning. Hold down the "Defrost" and "Recirculate" buttons simultaneously for about 5 seconds. Release the buttons when you hear a beep, and the AC system will reset. #MercedesACReset #CoolCar #CarACFix #MercedesAirConditioning #ACResetTutorial #DIYCarRepair #BeatTheHeat #MercedesHacks #CarCooling #ACMaintenance