How do you replace 2004 Mercedes C240 ac compressor?

To replace the AC compressor in a 2004 Mercedes C240, first, ensure the vehicle is off and the battery is disconnected. Remove the drive belt by loosening the tensioner, then detach the compressor by unbolting it from its mounting and disconnecting the refrigerant lines, ensuring to recover any refrigerant properly. Install the new compressor by reversing the disassembly steps, making sure to replace any O-rings and refill the system with the correct amount of refrigerant. Finally, reconnect the battery and test the AC system for proper operation.